CN116148677B - Elevator emergency power supply electric quantity monitoring system - Google Patents
Elevator emergency power supply electric quantity monitoring system Download PDFInfo
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- CN116148677B CN116148677B CN202310404765.0A CN202310404765A CN116148677B CN 116148677 B CN116148677 B CN 116148677B CN 202310404765 A CN202310404765 A CN 202310404765A CN 116148677 B CN116148677 B CN 116148677B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/367—Software therefor, e.g. for battery testing using modelling or look-up tables
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
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Abstract
The invention relates to the technical field of emergency power supply electric quantity monitoring, and particularly discloses an elevator emergency power supply electric quantity monitoring system which comprises a time section dividing module, an elevator commercial power use parameter extracting module, a monitoring period dividing module, an elevator emergency use parameter collecting module, a reference time section identifying module, a power consumption estimating module, an actual power consumption collecting module, an emergency power consumption trend error analyzing module and an emergency power supply duration interval predicting module.
Description
Technical Field
The invention relates to the technical field of emergency power supply electric quantity monitoring, in particular to an elevator emergency power supply electric quantity monitoring technology, and particularly discloses an elevator emergency power supply electric quantity monitoring system.
Background
With the rapid development of urban construction, high-rise buildings with different purposes are continuously developed, the holding quantity of elevators in cities is increased year by year, the elevators become necessary transportation means for people to come in and go out of the high-rise buildings, and as the elevators can run only by means of electric energy at any time, the elevator is affected by interruption faults of a mains supply line, and power failure accidents of the elevators occur at any time, so that the elevator emergency power supply is generated for ensuring the normal running of the elevators under the condition.
The elevator emergency power supply is used as an important guarantee for maintaining the safe and stable operation of the elevator in emergency, and has an extremely important function in the whole elevator power supply system. However, the emergency power supply has the problem of emergency power supply electric quantity maintainability in the implementation process, because the electric quantity provided by the emergency power supply is limited, and the operation of the elevator needs uninterrupted power supply, in order to continuously ensure the normal operation of the elevator after the emergency power supply is finished, a power supply scheme needs to be reasonably planned, and the realization of the aim depends on the accurate prediction of the power supply duration of the emergency power supply of the elevator.
In view of the fact that the running condition (running time, running direction and load) of the elevator directly determines the electricity consumption of the elevator, the running condition of the elevator is related to time sequence, so that the current electricity supply time prediction of the emergency power supply is mostly not considered to be the running condition of the elevator, analysis of the running condition of the elevator is omitted, the current electricity quantity of the emergency power supply is monitored directly according to the time-dependent distribution trend of the electricity consumption of the elevator in a mains supply state, the current electricity quantity of the emergency power supply is combined, the elevator emergency power supply time prediction is realized by combining the current electricity quantity of the emergency power supply and the elevator electricity consumption distribution trend, the prediction can be effectively ensured under the condition that the running condition of the elevator is consistent in the same time period according to the requirement, however, the situation that the running condition of the elevator is inconsistent in the same time period actually exists is caused, the prediction of the elevator emergency power supply time according to implementation is separated from the actual possibility, the prediction result error is large, and the accuracy of the prediction result is further influenced.
Disclosure of Invention
In view of the above, the present invention aims to provide an elevator emergency power supply electric quantity monitoring system, which sets monitoring time periods after an elevator is powered off, monitors elevator emergency power consumption of each monitoring time period, and compares the elevator running state of each monitoring time period with the running state of each time section of the elevator in a mains supply state, so as to analyze the guarantee degree by taking the distribution trend of the elevator power consumption along with time as a prediction basis, and finally reflects the accurate prediction of the elevator emergency power supply duration by combining the elevator emergency power consumption of each monitoring time period, thereby effectively solving the problems related to the background art.
The aim of the invention can be achieved by the following technical scheme: an elevator emergency power supply electric quantity monitoring system comprises the following modules: the time zone dividing module is used for dividing the single day duration into a plurality of time zones according to a set time interval, arranging the time zones according to a time sequence, and dividing all the use days existing in a preset use period according to the dividing mode to obtain a plurality of time zones corresponding to each use day.
And the elevator commercial power operation parameter extraction module is used for extracting elevator main body operation parameters and elevator power consumption corresponding to each time zone in each use day in a commercial power state.
The monitoring time interval demarcation module is used for recording the power-off time point of the elevator, and demarcating a plurality of monitoring time intervals based on the power-off time point of the elevator.
And the elevator emergency operation parameter acquisition module is used for extracting elevator main body operation parameters corresponding to each monitoring period in an emergency state.
And the reference time section identification module is used for identifying the reference time section corresponding to each monitoring period.
The power consumption estimating module is used for analyzing the estimated emergency power consumption of the elevator in each monitoring period based on the reference time section corresponding to each monitoring period.
The actual power consumption acquisition module is used for acquiring the actual emergency power consumption of the elevator in each monitoring period.
The emergency power consumption trend error analysis module is used for comparing the estimated emergency power consumption of the elevator in each monitoring period with the actual emergency power consumption and analyzing the elevator emergency power consumption estimated error.
The emergency power supply duration interval prediction module is used for predicting the emergency power supply duration interval of the emergency power supply to the elevator based on the elevator emergency power consumption prediction error.
As a preferable technical scheme, the elevator main body operation parameters comprise an elevator main body operation time length, an elevator main body operation direction and an elevator main body load.
As an preferable technical scheme, the specific implementation process of defining a plurality of monitoring time periods based on the power-off time point of the elevator is as follows: and comparing the power-off time point of the elevator with a plurality of time sections divided by the single day duration, screening out the time section which is fallen into by the power-off time point, and recording the time section as a specific time section.
And starting the monitoring time period by taking the specific time period from a plurality of time periods divided by the single day duration, and carrying out time duration according to the set monitoring time period number to obtain a plurality of monitoring time periods.
As a preferred technical solution, the identifying process for identifying the reference time segment corresponding to each monitoring period is as follows: comparing the elevator main body operation parameters corresponding to the monitoring time periods in the emergency state with the elevator main body operation parameters corresponding to the time sections in the use days in the commercial power state, and calculating the similarity of the elevator operation states of the monitoring time periods and the time sections in the use days
The calculation expression is +.>
Wherein i is denoted as the number of day of use, < >>
J is denoted as the number of the time segment, +.>
K is denoted as the number of the monitoring period, +.>
，/>
、/>
、/>
Respectively expressed as the running time of the elevator main body, the running direction representation value of the elevator main body, the load of the elevator main body and the load of the elevator main body corresponding to the jth time zone in the ith use day in the commercial power state>
、/>
、/>
Respectively expressed as the running time of the elevator main body, the running direction representation value of the elevator main body, the loading of the elevator main body and the load of the elevator main body corresponding to the kth monitoring period in the emergency state>
、/>
、/>
The running time of the elevator main body, the running direction of the elevator main body, the representation value of the running direction of the elevator main body and the load of the elevator main body are respectively indicated as a preset running time allowed difference of the elevator main body, a preset running direction representation value allowed difference of the elevator main body and a preset load allowed difference of the elevator main body.
And comparing the similarity of the elevator running states of each monitoring period and each time section in each use day with a predefined similarity threshold value, and screening time sections larger than the predefined similarity threshold value from all time sections in all use days to serve as reference time sections corresponding to each monitoring period.
As a preferable technical scheme, the analyzing the estimated emergency power consumption of the elevator in each monitoring period comprises the following steps: and extracting the elevator power consumption corresponding to the corresponding reference time section in the mains supply state from the elevator power consumption corresponding to each time section in each use in the mains supply state based on the reference time section corresponding to each monitoring time section, and recording the elevator power consumption as the elevator mains supply power consumption of the reference time section.
Comparing the elevator commercial power consumption of each monitoring period corresponding to each reference time zone, and calculating the power consumption differentiation index of each reference time zone corresponding to each monitoring period
Wherein->
The elevator commercial power consumption amount of the reference time zone b corresponding to the kth monitoring period is represented, b is represented as the reference time zone number corresponding to each monitoring period,
。
the power consumption differentiation index of the reference time zone corresponding to each monitoring period and the preset limit differentiation index are combined
And comparing, if the electricity consumption differentiation index of the reference time section corresponding to a certain monitoring period is not greater than a preset limiting differentiation index, taking the median of the elevator commercial electricity consumption of each reference time section corresponding to the monitoring period as the estimated emergency electricity consumption of the elevator in the monitoring period, otherwise, analyzing the normal electricity consumption of the reference time section corresponding to the monitoring period as the estimated emergency electricity consumption of the elevator in the monitoring period.
As an optimal technical scheme, the specific acquisition mode for acquiring the actual emergency power consumption of the elevator in each monitoring period is as follows: the method comprises the steps of obtaining original electric quantity of an emergency power supply before the emergency power supply makes an emergency on the elevator.
And collecting the residual electric quantity of the emergency power supply in each monitoring period.
And (3) making a difference between the original electric quantity of the emergency power supply and the residual electric quantity of the emergency power supply in each monitoring period, wherein the difference result is the actual emergency power consumption of the elevator in each monitoring period.
As a preferable technical scheme, the elevator emergency power consumption prediction errorIs of the analytical formula of (2)
Wherein->
、/>
The estimated emergency power consumption and the actual emergency power consumption of the elevator in the kth monitoring period are respectively represented, and z is the set monitoring period number.
As a preferable technical scheme, the emergency power supply duration interval of the emergency power supply to the elevator is predicted based on the elevator emergency power consumption estimated error by the emergency power supply, and the following steps are seen: counting the total number of the reference time sections corresponding to each monitoring period, comparing the starting time point and the ending time point of each monitoring period with the starting time point and the ending time point of each reference time section corresponding to the monitoring period respectively, and obtaining the number of the reference time sections consistent with each monitoring period from the comparison result, thereby utilizing a formula
Calculating a guarantee index taking the elevator power consumption of the historical use time section as a prediction basis, and simply marking the guarantee index as the prediction basis>
Wherein->
Expressed as the number of reference time segments corresponding to the kth monitoring time segment, which corresponds to the monitoring time segment,/->
Expressed as the total number of reference time segments corresponding to the kth monitoring period.
And extracting the last monitoring period from each monitoring period, and carrying out forward extension on the last monitoring period according to the time sections divided by the single day duration to obtain a plurality of target time sections.
When using each internal target in the state of commercial powerAverage value processing is carried out on the power consumption of the elevator corresponding to the inter-zone to obtain the average power consumption of the elevator in the target time zone
。
Using an evaluation formula
Obtaining the upper limit emergency power consumption of the elevator in the target time zone
And lower limit emergency power consumption->
。
The obtained target time zones are numbered according to the time sequence, the upper limit emergency power consumption of the elevator in each target time zone is accumulated in sequence, and the accumulated result is combined with the elevator
And comparing, namely identifying an upper limit cut-off target time section, and counting the duration from the power-off time point to the ending time point in the upper limit cut-off target time section at the moment to serve as the first emergency power supply duration.
Sequentially accumulating the lower limit emergency power consumption of the elevator in each target time zone according to the arrangement sequence of the target time zones, and combining the accumulated result with the lower limit emergency power consumption of the elevator
In contrast, a lower limit cut-off target time section is identified from the comparison, and the time length from the power-off time point to the ending time point in the lower limit cut-off target time section is counted as a second emergency power supply time length.
The first emergency power supply duration and the second emergency power supply duration form an emergency power supply duration interval of the emergency power supply to the elevator.
As a preferred technical scheme, the
，/>
Represented as the original charge of the emergency power supply.
Compared with the prior art, the embodiment of the invention has at least the following advantages or beneficial effects: 1. according to the invention, the monitoring time periods are set after the elevator is powered off, so that the running state of the elevator in each monitoring time period is compared with the running state of the elevator in each time zone in the mains supply state, the guarantee degree analysis by taking the time distribution trend of the power consumption of the elevator as a prediction basis is realized, the occurrence rate of the prediction and actual detachment of the elevator emergency power supply duration implemented according to the prediction basis is greatly reduced, and an effective prediction basis guarantee is provided for the prediction of the elevator emergency power supply duration.
2. According to the invention, after the monitoring time periods are set, the actual emergency power consumption of the elevator in each monitoring time period is acquired and compared with the power consumption of the elevator in the reference time zone in the mains supply state, so that the practical comparison of the emergency power consumption of the elevator and the mains supply power consumption is realized, reliable practical data support is provided for the prediction of the emergency power supply duration of the elevator, the prediction error is reduced, and the prediction accuracy of the emergency power supply duration of the elevator is improved to the greatest extent.
3. The prediction of the elevator emergency power supply duration is displayed in a duration interval mode, the elevator emergency power supply duration range is reflected, compared with a single duration value, the duration range can provide a referent planning duration interval for a power supply scheme, planning delay is avoided to the maximum extent, and the practical value is better.
Drawings
The invention will be further described with reference to the accompanying drawings, in which embodiments do not constitute any limitation of the invention, and other drawings can be obtained by one of ordinary skill in the art without inventive effort from the following drawings.
Fig. 1 is a schematic diagram of a system module connection according to the present invention.
Fig. 2 is a flow chart of the present invention for analyzing the estimated emergency power consumption of an elevator during each monitoring period.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides an elevator emergency power supply electric quantity monitoring system which comprises a time section dividing module, an elevator commercial power operation parameter extracting module, a monitoring period demarcating module, an elevator emergency operation parameter collecting module, a reference time section identifying module, a power consumption estimating module, an actual power consumption collecting module, an emergency power consumption trend error analyzing module and an emergency power supply duration section predicting module.
Referring to fig. 1, the connection relationship between each module is that a time section dividing module is connected with an elevator commercial power operation parameter extraction module, the time section dividing module is connected with a monitoring time section dividing module, the monitoring time section dividing module is connected with an elevator emergency operation parameter acquisition module, the elevator emergency operation parameter acquisition module and the elevator commercial power operation parameter extraction module are both connected with a reference time section identification module, the reference time section identification module and the elevator commercial power operation parameter extraction module are both connected with a power consumption estimation module, the power consumption estimation module and an actual power consumption acquisition module are both connected with an emergency power consumption trend error analysis module, and the emergency power consumption trend error analysis module is connected with an emergency power supply duration interval prediction module.
The time zone dividing module is used for dividing the single day duration into a plurality of time zones according to a set time interval, arranging the time zones according to time sequence, and dividing all the use days existing in a preset use period according to the dividing mode to obtain a plurality of time zones corresponding to each use day.
As an example of the invention, since the elevator is operated 24 hours a day, the above-mentioned single day duration is 24 hours, and the set time interval may be 1 hour, 30 minutes, 20 minutes, etc., the smaller the time interval is set, the more time zones are divided.
In addition, the preset use period can be 3 months, 6 months, 12 months and the like, and the longer the preset use period is, a large amount of elevator commercial power operation data can be provided for the identification of the reference time section, so that the identification accuracy of the reference time section is improved.
The elevator commercial power operation parameter extraction module is used for extracting elevator main body operation parameters and elevator power consumption corresponding to each time zone in each use day in a commercial power state, wherein the elevator main body operation parameters comprise elevator main body operation time length, elevator main body operation direction and elevator main body load.
In the specific embodiment of the invention, the specific acquisition process for extracting the elevator main body operation parameters corresponding to each time zone in each use under the state of the commercial power is as follows: and acquiring the type of the running direction of the elevator in the running process in each time zone corresponding to each using day, wherein the type of the running direction comprises uplink and downlink.
(1) If a single running direction exists in the running process of the elevator in a certain time zone corresponding to a certain using day, the running direction is the main body running direction of the elevator corresponding to the time zone, the running time of the elevator executing the running direction is the main body running time of the elevator corresponding to the time zone, and the average load of the elevator in the running process of the elevator in the time zone corresponding to the using day is taken as the main body load of the elevator corresponding to the time zone.
(2) If the elevator has two running directions of ascending and descending in the running process in a certain time zone corresponding to a certain using day.
(21) Acquiring the uplink operation time length and the downlink operation time length of the elevator, and passing the uplink operation time length and the downlink operation time length through a formula
Calculating the difference degree of the running time lengths of the elevators, wherein e is expressed as a natural constant, and the larger the difference between the uplink running time length and the downlink running time length is, the difference of the running time lengths of the elevators isThe greater the degree of dissimilarity.
(22) And comparing the running time difference degree of the elevator with a set critical value.
(221) If the running duration difference of the elevator is smaller than or equal to the set demarcation difference, taking the running directions of the elevator as main body running directions, taking the running duration of the elevator as main body running duration in an ascending state, taking the running duration of the elevator as main body running duration in a descending state, simultaneously acquiring the average load of the elevator in the ascending state, taking the average load of the elevator in the ascending state as the main body load of the elevator, and taking the average load of the elevator in the descending state as the main body load of the elevator in the descending state.
(222) If the running time difference degree of the elevator is greater than the set demarcation difference degree, using a model
And acquiring the main body running direction of the elevator, taking the running time of the elevator in the main body running direction as the main body running time at the moment, and taking the average load of the elevator in the main body running direction as the main body load.
It should be noted that, in the foregoing, when two main body running directions exist in the main body running parameters of the elevator, the calculation of the similarity of the subsequent running states of the elevator is inconvenient, in order to facilitate the calculation of the similarity of the running states of the elevator and improve the calculation efficiency, only one main body running direction in the main body running parameters of the elevator needs to be made as much as possible, in this case, the two reasons that the main body running directions of the elevator exist are considered to be that the time zone divided on a single day is long, so that the running time of the elevator is long, the elevator meets the requirement of the uplink running, and then the requirement of the downlink running is met, so that the two running directions are caused, at this moment, the time interval divided by the time zone can be set to be shorter, so that the elevator only needs to meet one running requirement in the running process, and the running direction of the elevator is relatively single, and only one running direction of the main body of the elevator can be met.
The monitoring time period demarcation module is used for recording the power-off time point of the elevator, and then demarcating a plurality of monitoring time periods based on the power-off time point of the elevator, and specifically, the specific implementation process of demarcating the plurality of monitoring time periods is as follows: comparing the power-off time point of the elevator with a plurality of time sections divided by a single day time length, screening out the time section falling into the power-off time point, and recording the time section as a specific time section;
and starting the monitoring time period by taking the specific time period from a plurality of time periods divided by the single day duration, and carrying out time duration according to the set monitoring time period number to obtain a plurality of monitoring time periods.
For example, assume that the elevator has a power outage time point of 7:10, assume that the time segments divided by the single day duration are 6:00-6:20,6:20-6:40,6:40-7:00,7:00-7:20,7:20-7:40,7:40-8:00,8:00-8:20,8:20-8:40,8:40-9:00.
At this time, the power-off time point of the elevator falls within 7:00-7:20, the initial monitoring period is 7:00-7:20, and the set monitoring period is 5, and the defined monitoring periods are 7:00-7:20,7:20-7:40,7:40-8:00,8:00-8:20, and 8:20-8:40.
The elevator emergency operation parameter acquisition module is used for extracting elevator main body operation parameters corresponding to each monitoring period in an emergency state.
It is to be understood that the elevator main body operation parameter collection mode corresponding to each monitoring period in the medium emergency state is executed according to the elevator main body operation parameter collection mode corresponding to each time zone in each use in the mains supply state.
The reference time zone identification module is used for identifying the reference time zone corresponding to each monitoring period, and the specific identification process is as follows: comparing the elevator main body operation parameters corresponding to the monitoring time periods in the emergency state with the elevator main body operation parameters corresponding to the time sections in the use days in the commercial power state, and calculating the similarity of the elevator operation states of the monitoring time periods and the time sections in the use days
The expression is calculated as
Wherein i is denoted as the number of the day of use,
j is denoted as the number of the time segment, +.>
K is denoted as the number of the monitoring period, +.>
，
、/>
、/>
Respectively expressed as the running time of the elevator main body, the running direction representation value of the elevator main body, the load of the elevator main body and the load of the elevator main body corresponding to the jth time zone in the ith use day in the commercial power state>
、/>
、/>
Respectively expressed as the running time of the elevator main body, the running direction representation value of the elevator main body, the loading of the elevator main body and the load of the elevator main body corresponding to the kth monitoring period in the emergency state>
、/>
、/>
Respectively expressed as a preset elevator main body operation time length allowable difference, an elevator main body operation direction representation value allowable difference and an elevator main bodyThe body load is allowed to be poor.
In a preferred scheme, the elevator main body running direction representation value is obtained by matching the elevator main body running direction corresponding to each time zone in each use day in a commercial power state and the elevator main body running direction corresponding to each monitoring period in an emergency state with the representation value corresponding to each predefined elevator running direction, so that the elevator main body running direction representation value corresponding to each time zone in each use day in the commercial power state and the elevator main body running direction representation value corresponding to each monitoring period in the emergency state are matched.
And comparing the similarity of the elevator running states of each monitoring period and each time section in each use day with a predefined similarity threshold value, and screening time sections larger than the predefined similarity threshold value from all time sections in all use days to serve as reference time sections corresponding to each monitoring period.
The power consumption estimation module is configured to analyze the estimated emergency power consumption of the elevator in each monitoring period based on the reference time segment corresponding to each monitoring period, as shown in fig. 2, and specifically includes the following steps: and extracting the elevator power consumption corresponding to the corresponding reference time section in the mains supply state from the elevator power consumption corresponding to each time section in each use in the mains supply state based on the reference time section corresponding to each monitoring time section, and recording the elevator power consumption as the elevator mains supply power consumption of the reference time section.
Comparing the elevator commercial power consumption of each monitoring period corresponding to each reference time zone, and calculating the power consumption differentiation index of each reference time zone corresponding to each monitoring period
Wherein->
Elevator mains electricity consumption, denoted as kth monitoring period corresponding to the b-th reference time zone, b denoted as reference time zone number corresponding to each monitoring period +.>
。
Will eachThe power consumption differentiation index of the reference time zone corresponding to the monitoring period and the preset limit differentiation index
And comparing, if the electricity consumption differentiation index of the reference time section corresponding to a certain monitoring period is not greater than a preset limiting differentiation index, taking the median of the elevator commercial electricity consumption of each reference time section corresponding to the monitoring period as the estimated emergency electricity consumption of the elevator in the monitoring period, otherwise, analyzing the normal electricity consumption of the reference time section corresponding to the monitoring period as the estimated emergency electricity consumption of the elevator in the monitoring period.
Based on the above scheme, the normal power consumption analysis mode of the reference time section corresponding to the monitoring period sequentially takes the elevator commercial power consumption of each reference time section corresponding to the monitoring period as a reference, calculates the elevator commercial power consumption distance of the monitoring period under the condition of taking each reference time section as a reference, and the calculation expression is that
Wherein->
The elevator commercial power consumption amount expressed as the reference time section except the b-th reference time section in the reference time section corresponding to the monitoring period, and b is expressed as the reference time section number except the b-th reference time section in the reference time section corresponding to the monitoring period>
And the elevator commercial power consumption quantity corresponding to the b reference time zone in the monitoring period is represented.
And comparing the elevator commercial power consumption distancing degree of the monitoring time period under the condition that each reference time period is taken as a reference, and selecting a reference time period corresponding to the minimum elevator commercial power consumption distancing degree from the reference time periods, so that the elevator commercial power consumption of the reference time period is taken as the normal power consumption of the corresponding reference time period of the monitoring time period.
The actual power consumption acquisition module is used for acquiring the actual emergency power consumption of the elevator in each monitoring period.
In a further embodiment of the invention, the specific acquisition mode of the actual emergency power consumption of the elevator is as follows: the method comprises the steps of obtaining original electric quantity of an emergency power supply before the emergency power supply makes an emergency on the elevator.
And collecting the residual electric quantity of the emergency power supply in each monitoring period.
And (3) making a difference between the original electric quantity of the emergency power supply and the residual electric quantity of the emergency power supply in each monitoring period, wherein the difference result is the actual emergency power consumption of the elevator in each monitoring period.
The emergency power consumption trend error analysis module is used for comparing the estimated emergency power consumption of the elevator in each monitoring period with the actual emergency power consumption, analyzing the elevator emergency power consumption estimated error, and the analysis formula is as follows
Wherein->
、/>
The estimated emergency power consumption and the actual emergency power consumption of the elevator in the kth monitoring period are respectively represented, and z is the set monitoring period number.
According to the invention, after the monitoring time periods are set, the actual emergency power consumption of the elevator in each monitoring time period is acquired and compared with the power consumption of the elevator in the reference time zone in the mains supply state, so that the practical comparison of the emergency power consumption of the elevator and the mains supply power consumption is realized, reliable practical data support is provided for the prediction of the emergency power supply duration of the elevator, the prediction error is reduced, and the prediction accuracy of the emergency power supply duration of the elevator is improved to the greatest extent.
The emergency power supply duration interval prediction module is used for predicting an emergency power supply duration interval of an emergency power supply to an elevator based on an elevator emergency power consumption prediction error, and specifically comprises the following prediction steps:
counting the total number of the reference time sections corresponding to each monitoring period, and further carrying out each monitoring periodThe starting time point and the ending time point of the monitoring time period are respectively compared with the starting time point and the ending time point of each reference time section corresponding to the monitoring time period, and the number of the reference time sections consistent with each monitoring time period is obtained from the comparison, so that a formula is utilized
Calculating a guarantee index taking the elevator power consumption of the historical use time section as a prediction basis, and simply marking the guarantee index as the prediction basis>
Wherein->
Expressed as the number of reference time segments corresponding to the kth monitoring time segment, which corresponds to the monitoring time segment,/->
The total number of the reference time sections corresponding to the kth monitoring time period is expressed, wherein the larger the number of the reference time sections which are consistent with the monitoring time period in the reference time sections corresponding to the monitoring time periods is, the larger the prediction basis guarantee index is, and the higher the guarantee degree taking the distribution trend of the elevator power consumption along with time as the prediction basis is indicated.
According to the invention, the monitoring time periods are set after the elevator is powered off, so that the running state of the elevator in each monitoring time period is compared with the running state of the elevator in each time zone in the mains supply state, the guarantee degree analysis by taking the time distribution trend of the power consumption of the elevator as a prediction basis is realized, the occurrence rate of the prediction and actual detachment of the elevator emergency power supply duration implemented according to the prediction basis is greatly reduced, and an effective prediction basis guarantee is provided for the prediction of the elevator emergency power supply duration.
And extracting the last monitoring period from each monitoring period, and carrying out forward extension on the last monitoring period according to the time sections divided by the single day duration to obtain a plurality of target time sections.
As one example of the present invention, the last monitoring period is 8:20-8:40, and several target time zones obtained by downstream of the last monitoring period in time zones divided by a single day duration are 8:40-9:00,9:00-9:20,9:20-9:40,9:40-10:00.
Average value processing is carried out on the elevator power consumption corresponding to the target time zone in each use under the state of the commercial power to obtain the elevator average power consumption of the target time zone
。
Using an evaluation formula
Obtaining the upper limit emergency power consumption of the elevator in the target time zone
And lower limit emergency power consumption->
。
The obtained multiple target time zones are numbered according to the time sequence, the upper limit emergency power consumption of the elevator in each target time zone is accumulated sequentially according to the arrangement sequence of the target time zones, and the accumulated result is combined with the upper limit emergency power consumption of the elevator
The comparison is made, from which an upper cutoff target time segment is identified.
As a specific embodiment of the scheme, the specific identification process of the upper limit cut-off target time zone is to accumulate the upper limit emergency power consumption of the elevator in each target time zone with the accumulated result
Comparing, if the upper limit emergency power consumption accumulation result of the elevator in the first five target time sections is less than or equal to +.>
And the upper limit emergency power consumption accumulation result of the elevator in the first six target time sections is greater than +.>
At this time, the fifth target time zone is the upper limit cut-off target time zone.
And counting the duration from the power-off time point to the ending time point in the upper limit cut-off target time section as the first emergency power supply duration.
The above mentioned middle part
，/>
Represented as the original charge of the emergency power supply.
Sequentially accumulating the lower limit emergency power consumption of the elevator in each target time zone according to the arrangement sequence of the target time zones, and combining the accumulated result with the lower limit emergency power consumption of the elevator
In contrast, a lower limit cut-off target time section is identified from the comparison, and the time length from the power-off time point to the ending time point in the lower limit cut-off target time section is counted as a second emergency power supply time length.
The above-described specific identification process of the middle-lower limit cutoff target time zone refers to the identification process of the upper limit cutoff target time zone.
The first emergency power supply duration and the second emergency power supply duration form an emergency power supply duration interval of the emergency power supply to the elevator.
The prediction of the elevator emergency power supply duration is displayed in a duration interval mode, the elevator emergency power supply duration range is reflected, compared with a single duration value, the duration range can provide a referent planning duration interval for a power supply scheme, planning delay is avoided to the maximum extent, and the practical value is better.
According to the invention, the residual electric quantity of the elevator emergency power supply is monitored in real time in the set monitoring period, the power consumption of each time section of the elevator in the mains supply state is taken as a prediction basis, the accurate prediction of the elevator emergency power supply time is realized, a reliable and practical reference basis is provided for planning a power supply scheme according to the mains supply maintenance time later, particularly, the elevator emergency power supply time is smaller than the mains supply maintenance time, the mains supply is continuously taken as the power supply, the power supply is re-planned when the elevator emergency power supply time is longer than the mains supply maintenance time, the elevator emergency power supply time prediction is more accurate, the more reasonable the planning of the subsequent power supply is realized, the mains supply can be used as the subsequent power supply, compared with the re-planning of the power supply, the power supply cost can be saved to the maximum extent by using the mains supply, and the power saving requirement is favorable for meeting the power saving requirement.
The foregoing is merely illustrative of the structures of this invention and various modifications, additions and substitutions for those skilled in the art of describing particular embodiments without departing from the structures of the invention or exceeding the scope of the invention as defined by the claims.
Claims (8)
1. An elevator emergency power supply electric quantity monitoring system is characterized by comprising the following modules:
the time zone dividing module is used for dividing the single day duration into a plurality of time zones according to a set time interval, arranging the time zones according to a time sequence, and dividing all the use days existing in a preset use period according to the dividing mode to obtain a plurality of time zones corresponding to each use day;
the elevator commercial power operation parameter extraction module is used for extracting elevator main body operation parameters and elevator power consumption corresponding to each time zone in each use day in a commercial power state;
the monitoring time period demarcation module is used for recording the power-off time point of the elevator, and demarcating a plurality of monitoring time periods based on the power-off time point of the elevator;
the specific implementation process of defining a plurality of monitoring time periods based on the power-off time point of the elevator is as follows:
comparing the power-off time point of the elevator with a plurality of time sections divided by a single day time length, screening out the time section falling into the power-off time point, and recording the time section as a specific time section;
taking a specific time section as an initial monitoring period from a plurality of time sections divided by the single day duration, and carrying out time duration according to the set monitoring period number to obtain a plurality of monitoring periods;
the elevator emergency operation parameter acquisition module is used for extracting elevator main body operation parameters corresponding to each monitoring period in an emergency state;
the reference time zone identification module is used for identifying a reference time zone corresponding to each monitoring period;
the power consumption estimating module is used for analyzing the estimated emergency power consumption of the elevator in each monitoring period based on the reference time section corresponding to each monitoring period;
the actual power consumption acquisition module is used for acquiring the actual emergency power consumption of the elevator in each monitoring period;
the emergency power consumption trend error analysis module is used for comparing the estimated emergency power consumption of the elevator in each monitoring period with the actual emergency power consumption and analyzing the elevator emergency power consumption estimated error;
the emergency power supply duration interval prediction module is used for predicting the emergency power supply duration interval of the emergency power supply to the elevator based on the elevator emergency power consumption prediction error.
2. The elevator emergency power supply charge monitoring system of claim 1, wherein: the elevator main body operation parameters comprise elevator main body operation time length, elevator main body operation direction and elevator main body load.
3. The elevator emergency power supply charge monitoring system of claim 2, wherein: the identification process for identifying the reference time section corresponding to each monitoring period is as follows:
comparing the elevator main body operation parameters corresponding to the monitoring time periods in the emergency state with the elevator main body operation parameters corresponding to the time sections in the use days in the commercial power state, and calculating the similarity of the elevator operation states of the monitoring time periods and the time sections in the use days
The calculation expression is +.>
Wherein i is denoted as the number of day of use, < >>
J is denoted as the number of the time segment, +.>
K is denoted as the number of the monitoring period, +.>
，/>
、/>
、/>
Respectively expressed as the running time of the elevator main body, the running direction representation value of the elevator main body, the load of the elevator main body and the load of the elevator main body corresponding to the jth time zone in the ith use day in the commercial power state>
、/>
、/>
Respectively expressed as the running time of the elevator main body, the running direction representation value of the elevator main body, the loading of the elevator main body and the load of the elevator main body corresponding to the kth monitoring period in the emergency state>
、/>
、/>
Respectively representing a preset elevator main body operation time allowable difference, an elevator main body operation direction characterization value allowable difference and an elevator main body load allowable difference;
and comparing the similarity of the elevator running states of each monitoring period and each time section in each use day with a predefined similarity threshold value, and screening time sections larger than the predefined similarity threshold value from all time sections in all use days to serve as reference time sections corresponding to each monitoring period.
4. An elevator emergency power supply charge monitoring system as set forth in claim 3, wherein: the analysis of the estimated emergency power consumption of the elevator in each monitoring period comprises the following steps:
extracting elevator power consumption corresponding to a corresponding reference time zone in the mains supply state from elevator power consumption corresponding to each time zone in each use in the mains supply state based on the reference time zone corresponding to each monitoring time zone, and recording the elevator power consumption as elevator mains supply power consumption of the reference time zone;
comparing the elevator commercial power consumption of each monitoring period corresponding to each reference time zone, and calculating the power consumption differentiation index of each reference time zone corresponding to each monitoring period
Wherein->
Elevator mains electricity consumption, denoted as kth monitoring period corresponding to the b-th reference time zone, b denoted as reference time zone number corresponding to each monitoring period +.>
；
The reference time corresponding to each monitoring periodSegment power consumption differentiation index and pre-configured limiting differentiation index
And comparing, if the electricity consumption differentiation index of the reference time section corresponding to a certain monitoring period is not greater than a preset limiting differentiation index, taking the median of the elevator commercial electricity consumption of each reference time section corresponding to the monitoring period as the estimated emergency electricity consumption of the elevator in the monitoring period, otherwise, analyzing the normal electricity consumption of the reference time section corresponding to the monitoring period as the estimated emergency electricity consumption of the elevator in the monitoring period.
5. The elevator emergency power supply charge monitoring system of claim 1, wherein: the actual emergency power consumption of the elevator in each monitoring period is collected in the following specific mode:
acquiring the original electric quantity of the emergency power supply before the emergency power supply carries out emergency on the elevator;
collecting the residual electric quantity of the emergency power supply in each monitoring period;
and (3) making a difference between the original electric quantity of the emergency power supply and the residual electric quantity of the emergency power supply in each monitoring period, wherein the difference result is the actual emergency power consumption of the elevator in each monitoring period.
6. An elevator emergency power supply charge monitoring system as set forth in claim 3, wherein: analytical formula of elevator emergency power consumption estimated error
Wherein->
、/>
The estimated emergency power consumption and the actual emergency power consumption of the elevator in the kth monitoring period are respectively represented, and z is the set monitoring period number.
7. The elevator emergency power supply charge monitoring system of claim 6, wherein: the emergency power supply duration interval of the emergency power supply to the elevator is predicted based on the elevator emergency power consumption prediction error, and the following steps are seen:
counting the total number of the reference time sections corresponding to each monitoring period, comparing the starting time point and the ending time point of each monitoring period with the starting time point and the ending time point of each reference time section corresponding to the monitoring period respectively, and obtaining the number of the reference time sections consistent with each monitoring period from the comparison result, thereby utilizing a formula
Calculating a guarantee index taking the elevator power consumption of the historical use time section as a prediction basis, and simply marking the guarantee index as the prediction basis>
Wherein->
Expressed as the number of reference time segments corresponding to the kth monitoring time segment, which corresponds to the monitoring time segment,/->
The total number of reference time segments corresponding to the kth monitoring period is represented;
extracting a last monitoring period from each monitoring period, and carrying out forward extension on the last monitoring period according to time sections divided by single day duration to obtain a plurality of target time sections;
average value processing is carried out on the elevator power consumption corresponding to the target time zone in each use under the state of the commercial power to obtain the elevator average power consumption of the target time zone
；
Using an evaluation formula
Obtaining the upper limit emergency power consumption of the elevator in the target time zone +.>
And lower limit emergency power consumption->
；
The obtained multiple target time zones are numbered according to the time sequence, the upper limit emergency power consumption of the elevator in each target time zone is accumulated sequentially according to the arrangement sequence of the target time zones, and the accumulated result is combined with the upper limit emergency power consumption of the elevator
Comparing, namely identifying an upper limit cut-off target time section from the power-off time point to the ending time point in the upper limit cut-off target time section, and counting the duration from the power-off time point to the ending time point as a first emergency power supply duration;
sequentially accumulating the lower limit emergency power consumption of the elevator in each target time zone according to the arrangement sequence of the target time zones, and combining the accumulated result with the lower limit emergency power consumption of the elevator
Comparing, and identifying a lower limit cut-off target time section from the comparison result, thereby counting the duration from the power-off time point to the ending time point in the lower limit cut-off target time section as a second emergency power supply duration;
the first emergency power supply duration and the second emergency power supply duration form an emergency power supply duration interval of the emergency power supply to the elevator.
8. The elevator emergency power supply charge monitoring system of claim 7, wherein: the said
，/>
Represented as the original charge of the emergency power supply.
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