CN116454908B - Capacitor bank switching frequency counting method and device - Google Patents
Capacitor bank switching frequency counting method and device Download PDFInfo
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- 239000003990 capacitor Substances 0.000 title claims abstract description 152
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000005070 sampling Methods 0.000 claims description 110
- 238000013524 data verification Methods 0.000 claims description 2
- 230000009471 action Effects 0.000 description 13
- 238000011217 control strategy Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000003631 expected effect Effects 0.000 description 3
- 230000003449 preventive effect Effects 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
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- 238000012545 processing Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
- H02J3/1835—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control
- H02J3/1864—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein the stepless control of reactive power is obtained by at least one reactive element connected in series with a semiconductor switch
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/10—Power transmission or distribution systems management focussing at grid-level, e.g. load flow analysis, node profile computation, meshed network optimisation, active network management or spinning reserve management
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The application discloses a capacitor bank switching frequency counting method and device, and relates to the technical field of electric power automation.
Description
Technical Field
The application relates to the technical field of power automation, in particular to a capacitor bank switching frequency counting method and device.
Background
Along with the continuous expansion of the power grid construction scale, the system operation mode is complex and changeable, the reactive power distribution in the power grid is more complex, the main means of reactive power compensation of the transformer substation at present is still to switch capacitors, and the switching strategy of the capacitors is mainly a voltage reactive power control (voltage and reactive power control, VQC) technology. And taking a capacitor bank and a main transformer tap of a regional transformer substation as control objects, calculating an optimal regulation strategy by comprehensively considering the voltage reactive power conditions of the transformer substations with different voltage levels in the same region, and then performing unified control. However, in the actual working and production process, reactive compensation of the transformer substation based on the VQC control strategy at present often cannot achieve the expected effect, and the technical problem of low control accuracy exists.
Disclosure of Invention
The application provides a capacitor bank switching frequency counting method and device, which are used for solving the technical problems that reactive compensation of a transformer substation based on a VQC control strategy at present often cannot reach an expected effect and control accuracy is low.
In order to solve the above technical problems, a first aspect of the present application provides a method for counting switching times of a capacitor bank, including:
acquiring capacitor bank current data;
comparing the sampling point current data with a preset current threshold according to sampling point current data in the capacitor bank current data, and determining first current data and second current data according to a comparison result, wherein the first current data is sampling point current data with a current value larger than or equal to the current threshold, and the second current data is sampling point current data with a current value smaller than the current threshold;
traversing the sampling point current data according to the sampling point current data and the time sequence of the sampling points, and determining a target data section in the capacitor bank current data, wherein the starting point of the target data section is first current data, and the end point of the target data section is second current data;
and determining the statistical data of the switching times of the capacitor bank according to the number of the target data sections.
Preferably, when the capacitor bank current data is discrete data, traversing the sampling point current data according to the sampling point current data and the time sequence of the sampling points, and determining the target data section in the capacitor bank current data specifically includes:
according to the sampling point current data, traversing the sampling point current data according to the time sequence of the sampling points, determining the starting point of a target data section when a plurality of first current data are detected to continuously appear, then continuing traversing until a plurality of second current data are detected to continuously appear, determining the end point of the target data section to obtain a target data section, and determining all target data sections in the capacitor bank current data when all sampling point current data are traversed.
Preferably, when the capacitor bank current data is continuous data, traversing the sampling point current data according to the sampling point current data and the time sequence of the sampling points, and determining the target data section in the capacitor bank current data specifically includes:
according to the sampling point current data, traversing the sampling point current data according to the time sequence of the sampling points, determining the starting point of a target data section when the first current data is detected and the duration time of the first current data reaches a preset time threshold value, then continuing traversing until the second current data is detected and the duration time of the second current data reaches the preset time threshold value, determining the end point of the target data section to obtain a target data section, and determining all the target data sections in the capacitor bank current data when all the sampling point current data traversing is completed.
Preferably, the determining the statistics of the switching times of the capacitor bank further comprises:
and comparing the statistical data with reference statistical data, and triggering strategy error warning if the deviation is larger than a preset deviation threshold, wherein the reference statistical data is capacitor switching frequency statistical data obtained through a VQC strategy.
Preferably, the capacitor bank current data is specifically phase a current data of the capacitor bank.
The second aspect of the present application provides a device for counting the switching times of a capacitor bank, comprising:
a current data acquisition unit for acquiring capacitor bank current data;
the current data characteristic classification unit is used for comparing the sampling point current data with a preset current threshold according to sampling point current data in the capacitor bank current data to determine first current data and second current data according to a comparison result, wherein the first current data is sampling point current data with a current value larger than or equal to the current threshold, and the second current data is sampling point current data with a current value smaller than the current threshold;
the current data traversing unit is used for traversing the sampling point current data according to the sampling point current data and the time sequence of the sampling point, and determining a target data section in the capacitor bank current data, wherein the starting point of the target data section is first current data, and the end point of the target data section is second current data;
and the capacitor switching statistical unit is used for determining statistical data of the switching times of the capacitor bank according to the number of the target data sections.
Preferably, when the capacitor bank current data is discrete data, the current data traversing unit is specifically configured to:
according to the sampling point current data, traversing the sampling point current data according to the time sequence of the sampling points, determining the starting point of a target data section when a plurality of first current data are detected to continuously appear, then continuing traversing until a plurality of second current data are detected to continuously appear, determining the end point of the target data section to obtain a target data section, and determining all target data sections in the capacitor bank current data when all sampling point current data are traversed.
Preferably, when the capacitor bank current data is continuous data, the current data traversing unit is specifically configured to:
according to the sampling point current data, traversing the sampling point current data according to the time sequence of the sampling points, determining the starting point of a target data section when the first current data is detected and the duration time of the first current data reaches a preset time threshold value, then continuing traversing until the second current data is detected and the duration time of the second current data reaches the preset time threshold value, determining the end point of the target data section to obtain a target data section, and determining all the target data sections in the capacitor bank current data when all the sampling point current data traversing is completed.
Preferably, the method further comprises:
and the switching statistical data verification unit is used for comparing the statistical data with reference statistical data, and triggering strategy error warning if the deviation is larger than a preset deviation threshold value, wherein the reference statistical data is capacitor switching times statistical data obtained through a VQC strategy.
Preferably, the capacitor bank current data is specifically phase a current data of the capacitor bank.
From the above technical solutions, the embodiment of the present application has the following advantages:
according to the capacitor bank switching frequency counting method, the characteristic that corresponding fluctuation phenomenon occurs in current data of a capacitor bank during switching action is utilized, the current data of a transformer substation capacitor bank is obtained, the current data of sampling points in the current data of the capacitor bank are compared with a preset current threshold value, first current data higher than the threshold value and second current data lower than the threshold value are determined according to comparison results, then the sampling points are traversed according to the time sequence of sampling points according to the two current data, target data sections in the current data of the capacitor bank are determined, each time a section representing that the capacitor bank completes one switching action appears, and finally the counting data of the capacitor bank switching frequency can be determined according to the number of the target data sections. The method can distinguish the extra action times generated by the preventive test of the circuit breaker in the power failure state, avoids false detection caused by the statistics of the action of the circuit breaker, and improves the accuracy of the statistics of the switching times of the capacitor bank, thereby improving the accuracy of the execution of the VQC strategy and further improving the reactive compensation effect of the transformer substation.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the application, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a flowchart of a first embodiment of a method for counting the number of switching times of a capacitor bank according to the present application.
Fig. 2 is a flowchart of a second embodiment of a method for counting the number of switching times of a capacitor bank according to the present application.
Fig. 3 is a schematic structural diagram of an embodiment of a device for counting the switching times of a capacitor bank according to the present application.
Detailed Description
Aiming at the phenomenon that the current voltage reactive power control often cannot reach the expected reactive power compensation effect of the transformer substation in the actual working production process, researches find that the reason for the poor reactive power compensation effect of the transformer substation in the current VQC control strategy is related to inaccurate statistics of the switching times of the capacitor in the prior art.
In the prior art, the switching times of the capacitor are counted through the corresponding breaker action times of the capacitor, and the capacitor is checked with the VQC manually, and the specific method is to count the breaker action times by manually checking meter on site or installing breaker on-line monitoring equipment. The most important is that the extra action times generated by the preventive test of the circuit breaker in the power failure state are not distinguished, at this time, the capacitor is in the grounding state, and the switching action of the capacitor does not represent that the capacitor is switched, so that the conventional method for counting the switching times of the capacitor according to the action times of the circuit breaker is easy to generate misjudgment. Because the main means of reactive compensation of the transformer substation is still switching capacitors, the switching times of the capacitors are one of the important judgment bases for executing a VQC control strategy, if the actual switching times of a certain capacitor bank in a power system are too much and are not counted correctly, because the VQC is alternately switching each capacitor under a single bus, if the counted times of the certain capacitor bank are more, the VQC strategy cannot be switched on the capacitor bank next time, other capacitors with smaller switching times can be selected, in actual application, the capacitor bank with data counting errors due to the defects of the existing switching times counting mechanism often is more than one group, the residual capacitors are always switched on due to inaccurate switching times, the capacitor bank is easier to fail, even is damaged in advance, reactive compensation stability is reduced, and finally the reactive compensation effect of the whole transformer substation is affected, so that the current situation of poor reactive compensation effect of the transformer substation is caused.
In view of the above, the embodiment of the application provides a method and a device for counting the switching times of a capacitor bank, which are used for solving the technical problems that the reactive compensation of a transformer substation based on a VQC control strategy at present often cannot reach the expected effect and the control accuracy is low.
In order to make the objects, features and advantages of the present application more comprehensible, the technical solutions in the embodiments of the present application are described in detail below with reference to the accompanying drawings, and it is apparent that the embodiments described below are only some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Firstly, the application provides a detailed description of an embodiment of a method for counting the switching times of a capacitor bank, which comprises the following steps:
referring to fig. 1, a method for counting switching times of a capacitor bank according to the present embodiment includes:
and 101, acquiring capacitor bank current data.
More specifically, the capacitor bank current data mentioned in the present embodiment may preferably take the a-phase current data of the capacitor bank.
Step 102, comparing the sampling point current data with a preset current threshold according to the sampling point current data in the capacitor bank current data, so as to determine first current data and second current data according to a comparison result.
The first current data is sampling point current data with a current value larger than or equal to a current threshold value, and the second current data is sampling point current data with a current value smaller than the current threshold value.
It should be noted that, first, the capacitor bank with the switching times counted is obtained according to the requirement, the current data of the capacitor bank is obtained, the obtaining mode can be read from a data acquisition and monitoring control System (SCADA), then the capacitor bank can be defaulted to 10A according to a preset current threshold value, but the capacitor bank can also be adjusted according to the actual parameter level of the actual capacitor bank, the current data of the sampling point in the current data of the capacitor bank is compared with the current threshold value, and the current data of the capacitor bank is divided into the first current data and the second current data.
And 103, traversing the sampling point current data according to the time sequence of the sampling points and determining a target data section in the capacitor bank current data.
The target data section starts with the first current data and ends with the second current data.
Step 104, determining statistical data of the switching times of the capacitor bank according to the number of the target data sections.
It should be noted that, by using the classification result of the current data of the sampling point obtained in step 102, the current data of the sampling point is traversed according to the time sequence of the sampling point, and when the current data greater than or equal to the current threshold is detected, the capacitor bank is indicated to perform actual switching, and if the current data is smaller than the current threshold, the capacitor bank can be regarded as not switching or maintenance test state, therefore, when one target data section is detected, the capacitor bank is indicated to perform a complete switching operation, and accumulation is performed, and finally, when the traversing is completed, the switching times of the capacitor bank can be calculated according to the number of the target data sections.
The method provided by the application utilizes the characteristic that the current data of the capacitor bank can generate corresponding fluctuation phenomenon during switching action, the current data of the capacitor bank of the transformer substation is obtained, the current data of the sampling point in the current data of the capacitor bank is compared with a preset current threshold value according to the current data of the sampling point, the first current data higher than the threshold value and the second current data lower than the threshold value are determined according to the comparison result, then the current data of the sampling point are traversed according to the time sequence of the sampling point according to the two current data, the target data section in the current data of the capacitor bank is determined, the capacitor bank switching action is completed every time a section appears, and finally the statistical data of the switching times of the capacitor bank can be determined according to the number of the target data sections. The method can distinguish the extra action times generated by the preventive test of the circuit breaker in the power failure state, avoids false detection caused by the statistics of the action of the circuit breaker, and improves the accuracy of the statistics of the switching times of the capacitor bank, thereby improving the accuracy of the execution of the VQC strategy and further improving the reactive compensation effect of the transformer substation.
On the basis of the embodiment, the application also provides a detailed description of a further embodiment of the method for counting the switching times of the capacitor bank, which is specifically as follows:
further, when the capacitor bank current data is discrete data, the step flow of step 103 may specifically include:
according to the sampling point current data, traversing the sampling point current data according to the time sequence of the sampling points, determining the starting point of a target data section when a plurality of first current data are detected to continuously appear, then continuing traversing until a plurality of second current data are detected to continuously appear, determining the end point of the target data section to obtain a target data section, and determining all target data sections in the capacitor bank current data when all the sampling point current data are traversed.
Or alternatively;
when the capacitor bank current data is continuous data, the step flow of step 103 may specifically include:
according to the sampling point current data, traversing the sampling point current data according to the time sequence of the sampling points, determining the starting point of a target data section when the first current data is detected and the duration of the first current data reaches a preset time threshold, then continuing traversing until the second current data is detected and the duration of the second current data reaches the preset time threshold, determining the end point of the target data section to obtain a target data section, and determining all the target data sections in the capacitor bank current data when all the sampling point current data traversing is completed.
It should be noted that, in order to further optimize the detection accuracy of the target data segment, the present embodiment further provides a target data segment detection method for different types of capacitor bank current data, which specifically includes:
according to sampling point current data and time sequence of sampling points, traversing the sampling point current data, judging effective statistics when the capacitor bank current data is discrete data with lower sampling frequency, and continuously counting the A phase current which is more than or equal to 10A for more than N times until continuously counting the A phase current which is less than 10A for N times, wherein the number of switching times is +1, accumulating the current data, and converting the current data into the total switching times of the capacitor, and N is more than or equal to 2.
If the capacitor bank current data is continuous data, the effective statistics can be determined when the phase A current greater than or equal to 10A appears and the duration reaches a preset time threshold, and the statistics is completed once when the phase A current smaller than 10A appears and the duration reaches a preset time threshold, and the switching times +1 are accumulated and converted into the total switching times of the capacitor. In the present embodiment, the time threshold for determining the first current data may be the same as or different from the time threshold for determining the second current data.
As shown in fig. 2, further, after step 104, the method further includes:
and 105, comparing the statistical data with reference statistical data, and triggering strategy error warning if the deviation is larger than a preset deviation threshold, wherein the reference statistical data is capacitor switching frequency statistical data obtained through a VQC strategy.
It should be noted that, after the statistics data of the switching times of the capacitor bank are obtained through steps 101 to 104, the switching times of the capacitor may be read from a VQC (voltage reactive power comprehensive control strategy of the transformer substation), the switching times of the capacitor read from the VQC and the switching times of the capacitor counted by the method in this embodiment are checked, if the deviation exceeds 10%, an alarm is sent to the regulation center, so as to assist in decision VQC strategy adjustment according to the check result. If the number of switching times of the capacitors in the above two groups is less than 5, no processing is performed.
The above description is about the embodiment of the method for counting the number of switching times of the capacitor bank, and the following description is about the embodiment of the device for counting the number of switching times of the capacitor bank.
Referring to fig. 3, a device for counting switching times of a capacitor bank according to the present embodiment includes:
a current data acquisition unit 201 for acquiring capacitor bank current data;
the current data feature classification unit 202 is configured to compare the sampling point current data with a preset current threshold according to sampling point current data in the capacitor bank current data, so as to determine first current data and second current data according to a comparison result, where the first current data is sampling point current data with a current value greater than or equal to the current threshold, and the second current data is sampling point current data with a current value less than the current threshold;
a current data traversing unit 203, configured to traverse the sampling point current data according to the sampling point current data and the time sequence of the sampling point, and determine a target data section in the capacitor bank current data, where a start point of the target data section is first current data and an end point of the target data section is second current data;
the capacitor switching statistics unit 204 is configured to determine statistics of the switching times of the capacitor bank according to the number of the target data segments.
Further, when the capacitor bank current data is discrete data, the current data traversing unit 203 is specifically configured to:
according to the sampling point current data, traversing the sampling point current data according to the time sequence of the sampling points, determining the starting point of a target data section when a plurality of first current data are detected to continuously appear, then continuing traversing until a plurality of second current data are detected to continuously appear, determining the end point of the target data section to obtain a target data section, and determining all target data sections in the capacitor bank current data when all the sampling point current data are traversed.
Further, when the capacitor bank current data is continuous data, the current data traversing unit 203 is specifically configured to:
according to the sampling point current data, traversing the sampling point current data according to the time sequence of the sampling points, determining the starting point of a target data section when the first current data is detected and the duration of the first current data reaches a preset time threshold, then continuing traversing until the second current data is detected and the duration of the second current data reaches the preset time threshold, determining the end point of the target data section to obtain a target data section, and determining all the target data sections in the capacitor bank current data when all the sampling point current data traversing is completed.
Further, the method further comprises the following steps:
the switching statistic data checking unit 205 is configured to compare the statistic data with reference statistic data, and trigger a policy error alarm if the deviation is greater than a preset deviation threshold, where the reference statistic data is capacitor switching frequency statistic data obtained through a VQC policy.
Further, the capacitor bank current data is specifically phase a current data of the capacitor bank.
It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working procedures of the terminal, apparatus and unit described above may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The terms "first," "second," "third," "fourth," and the like in the description of the application and in the above figures, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented, for example, in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims (8)
1. The method for counting the switching times of the capacitor bank is characterized by comprising the following steps of:
acquiring capacitor bank current data;
comparing the sampling point current data with a preset current threshold according to sampling point current data in the capacitor bank current data, and determining first current data and second current data according to a comparison result, wherein the first current data is sampling point current data with a current value larger than or equal to the current threshold, and the second current data is sampling point current data with a current value smaller than the current threshold;
when the capacitor bank current data are discrete data, traversing the sampling point current data according to the sampling point current data and the time sequence of sampling points, determining the starting point of a target data section when a plurality of first current data are detected to continuously appear, then continuing traversing until a plurality of second current data are detected to continuously appear, determining the end point of the target data section to obtain a target data section, and determining all the target data sections in the capacitor bank current data when all the sampling point current data are traversed, wherein the starting point of the target data section is the first current data and the end point is the second current data;
and determining the statistical data of the switching times of the capacitor bank according to the number of the target data sections.
2. The method of claim 1, wherein when the capacitor bank current data is continuous data, traversing the sampling point current data according to the sampling point time sequence according to the sampling point current data, and determining the target data section in the capacitor bank current data specifically comprises:
according to the sampling point current data, traversing the sampling point current data according to the time sequence of the sampling points, determining the starting point of a target data section when the first current data is detected and the duration time of the first current data reaches a preset time threshold value, then continuing traversing until the second current data is detected and the duration time of the second current data reaches the preset time threshold value, determining the end point of the target data section to obtain a target data section, and determining all the target data sections in the capacitor bank current data when all the sampling point current data traversing is completed.
3. The method for counting the switching times of a capacitor bank according to claim 1, wherein the step of determining the counting result of the switching times of the capacitor bank further comprises:
and comparing the statistical data with reference statistical data, and triggering strategy error warning if the deviation is larger than a preset deviation threshold, wherein the reference statistical data is capacitor switching frequency statistical data obtained through a VQC strategy.
4. The method according to claim 1, wherein the capacitor bank current data is phase a current data of the capacitor bank.
5. The utility model provides a capacitor bank switching number of times counting assembly which characterized in that includes:
a current data acquisition unit for acquiring capacitor bank current data;
the current data characteristic classification unit is used for comparing the sampling point current data with a preset current threshold according to sampling point current data in the capacitor bank current data to determine first current data and second current data according to a comparison result, wherein the first current data is sampling point current data with a current value larger than or equal to the current threshold, and the second current data is sampling point current data with a current value smaller than the current threshold;
the current data traversing unit is used for traversing the sampling point current data according to the sampling point current data and the time sequence of the sampling point, and determining a target data section in the capacitor bank current data, wherein the starting point of the target data section is first current data, and the end point of the target data section is second current data;
the capacitor switching statistical unit is used for determining statistical data of the switching times of the capacitor bank according to the number of the target data sections;
when the capacitor bank current data is discrete data, the current data traversing unit is specifically configured to:
according to the sampling point current data, traversing the sampling point current data according to the time sequence of the sampling points, determining the starting point of a target data section when a plurality of first current data are detected to continuously appear, then continuing traversing until a plurality of second current data are detected to continuously appear, determining the end point of the target data section to obtain a target data section, and determining all target data sections in the capacitor bank current data when all sampling point current data are traversed.
6. The device for counting the switching times of a capacitor bank according to claim 5, wherein when the capacitor bank current data is continuous data, the current data traversing unit is specifically configured to:
according to the sampling point current data, traversing the sampling point current data according to the time sequence of the sampling points, determining the starting point of a target data section when the first current data is detected and the duration time of the first current data reaches a preset time threshold value, then continuing traversing until the second current data is detected and the duration time of the second current data reaches the preset time threshold value, determining the end point of the target data section to obtain a target data section, and determining all the target data sections in the capacitor bank current data when all the sampling point current data traversing is completed.
7. The device for counting the number of switching times of a capacitor bank according to claim 5, further comprising:
and the switching statistical data verification unit is used for comparing the statistical data with reference statistical data, and triggering strategy error warning if the deviation is larger than a preset deviation threshold value, wherein the reference statistical data is capacitor switching times statistical data obtained through a VQC strategy.
8. The device according to claim 5, wherein the capacitor bank current data is phase a current data of the capacitor bank.
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