CN118011074A - Method, device, system and storage medium for monitoring voltage fluctuation of transformer area - Google Patents
Method, device, system and storage medium for monitoring voltage fluctuation of transformer area Download PDFInfo
- Publication number
- CN118011074A CN118011074A CN202410413967.6A CN202410413967A CN118011074A CN 118011074 A CN118011074 A CN 118011074A CN 202410413967 A CN202410413967 A CN 202410413967A CN 118011074 A CN118011074 A CN 118011074A
- Authority
- CN
- China
- Prior art keywords
- voltage
- sampling
- value
- median
- core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000012544 monitoring process Methods 0.000 title claims abstract description 42
- 238000005070 sampling Methods 0.000 claims abstract description 254
- 238000004590 computer program Methods 0.000 claims description 21
- 238000012545 processing Methods 0.000 claims description 8
- 238000004364 calculation method Methods 0.000 claims description 6
- 238000000638 solvent extraction Methods 0.000 claims description 5
- 238000012935 Averaging Methods 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000012163 sequencing technique Methods 0.000 claims description 3
- 238000012806 monitoring device Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Measurement Of Current Or Voltage (AREA)
Abstract
The application relates to the technical field of monitoring of voltage of a platform area, and provides a monitoring method, a device, a system and a storage medium for voltage fluctuation of the platform area, which can analyze the voltage fluctuation condition of the platform area under the condition of no need of newly added equipment. In the application, a voltage sampling value of a grid-connected point of a platform area at multi-period and multi-sampling moments is obtained; for each sampling moment, obtaining a voltage core value of the sampling moment based on a multi-period voltage sampling value of the sampling moment; based on the voltage core values of the multiple sampling moments, a voltage core curve is obtained, and a multi-step voltage distribution area taking the voltage core curve as the center is determined; the larger the step, the farther from the voltage core curve; obtaining the number of voltage sampling values in each step voltage distribution area based on the voltage distribution area where the voltage sampling value at each sampling time in the target period is located; and determining the voltage fluctuation condition of the grid-connected point of the platform region in the target period according to the duty ratio of the number of the voltage sampling values in each step voltage distribution region in the number of single-period sampling.
Description
Technical Field
The present application relates to the field of monitoring of a voltage in a transformer area, and in particular, to a method and an apparatus for monitoring voltage fluctuation in a transformer area, a system for monitoring voltage fluctuation in a transformer area, a storage medium, and a computer program product.
Background
The novel source storage equipment of the distributed power supply and the charging pile is connected, the voltage fluctuation of the platform area is gradually enhanced, and the novel source storage equipment has the characteristic of randomness, while the traditional voltage monitoring logic is mostly interval monitoring, and the monitoring on the voltage fluctuation is lacked, so that the novel source storage equipment is forced to be added to be hindered by a larger technology.
The voltage monitoring device aims at the users which are sensitive to the voltage fluctuation, the requirement on the fluctuation of the voltage of the grid-connected point is high, but the existing voltage monitoring logic is used for monitoring whether the voltage has out-of-limit behavior or not, the detection on the voltage fluctuation is ignored, and the voltage monitoring device of the existing transformer area is high in transformation difficulty, so that a system which is based on the existing voltage monitoring device and can effectively meet the voltage fluctuation monitoring is urgently needed.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a method, an apparatus, a system, a storage medium, and a computer program product for monitoring a voltage fluctuation of a cell.
The application provides a method for monitoring voltage fluctuation of a platform region, which comprises the following steps:
Acquiring voltage sampling values of grid-connected points of a platform area at multi-period and multi-sampling moments;
for each sampling moment, obtaining a voltage core value of the sampling moment based on a multi-period voltage sampling value of the sampling moment;
Based on the voltage core values of the multiple sampling moments, a voltage core curve is obtained, and a multi-step voltage distribution area taking the voltage core curve as the center is determined; the larger the step, the farther from the voltage core curve;
obtaining the number of voltage sampling values in each step voltage distribution area based on the voltage distribution area where the voltage sampling value at each sampling time in the target period is located;
and determining the voltage fluctuation condition of the grid-connected point of the platform region in the target period according to the duty ratio of the number of the voltage sampling values in each step voltage distribution region in the number of single-period sampling.
The application provides a monitoring device for voltage fluctuation of a transformer area, which comprises:
The voltage acquisition module is used for acquiring voltage sampling values of grid-connected points of the transformer area at multi-period and multi-sampling moments;
The core value calculation module is used for obtaining a voltage core value of each sampling moment based on the multicycle voltage sampling value of the sampling moment;
The curve acquisition and partitioning module is used for acquiring a voltage core curve based on the voltage core values of the multiple sampling moments and determining a multi-step voltage distribution area taking the voltage core curve as the center; the larger the step, the farther from the voltage core curve;
The intra-area quantity counting module is used for obtaining the quantity of the voltage sampling values in each step voltage distribution area based on the voltage distribution area where the voltage sampling value at each sampling moment in the target period is located;
and the fluctuation exception processing module is used for determining the voltage fluctuation condition of the grid-connected point of the platform area in the target period according to the duty ratio of the number of the voltage sampling values in each step voltage distribution area in the number of single-period sampling.
The application provides a system for monitoring voltage fluctuation of a platform area, which comprises a memory and a processor, wherein the memory stores a computer program, and the processor executes the method.
The present application provides a computer readable storage medium having stored thereon a computer program for execution by a processor of the above method.
The present application provides a computer program product having a computer program stored thereon, the computer program being executed by a processor to perform the above method.
After obtaining a voltage sampling value of a grid-connected point of a platform area at multi-period and multi-sampling time, aiming at each sampling time, obtaining a voltage core value of the sampling time based on the multi-period voltage sampling value of the sampling time; based on the voltage core values of the multiple sampling moments, a voltage core curve is obtained, and a multi-step voltage distribution area taking the voltage core curve as the center is determined; the larger the step, the farther from the voltage core curve; obtaining the number of voltage sampling values in each step voltage distribution area based on the voltage distribution area where the voltage sampling value at each sampling time in the target period is located; according to the ratio of the number of the voltage sampling values in each step voltage distribution area in the single-period sampling number, the voltage fluctuation condition of the grid-connected point of the platform area in the target period is determined, and the voltage fluctuation condition of the grid-connected point of the platform area can be analyzed under the condition that new equipment is not needed.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.
FIG. 1 is a flow chart of a method for monitoring voltage fluctuation of a cell in one embodiment;
FIG. 2 is a schematic diagram of a voltage core curve and each step distribution region according to one embodiment;
FIG. 3 is a flow chart illustrating a method for determining voltage fluctuation of a cell in one embodiment;
FIG. 4 is a schematic diagram of a voltage core calculation flow in one embodiment;
FIG. 5 is a block diagram of a device for monitoring voltage fluctuation of a bay in one embodiment;
Fig. 6 is an internal structural diagram of a system for monitoring voltage fluctuation of a bay in one embodiment.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the described embodiments of the application may be combined with other embodiments.
The monitoring method of the voltage fluctuation of the platform area can be suitable for the platform area which is influenced by novel source storage equipment and has abnormal fluctuation of voltage, and the voltage fluctuation condition of the platform area can be obtained under the condition that new equipment is not needed; moreover, the application is also suitable for users sensitive to voltage fluctuation, can realize quantitative analysis of fluctuation degree after determining the running normalcy according to the historical voltage running data, provides data support for voltage regulation and control, and can continuously update the running normalcy by combining the actual running state.
The method provided by the application can be executed by a transformer area voltage fluctuation monitoring system, and comprises the steps shown in fig. 1:
Step S101, obtaining voltage sampling values of the grid-connected points of the platform area at multi-period and multi-sampling moments.
The application can obtain the appointed time period of the grid-connected point of the platform area in the past) In the inner partA single period of voltage sampling value and marks the firstWith a period ofWherein the number of voltage sampling values in a single period (also simply referred to as the number of single period sampling) is n, and the voltage sampling values in the single period are ordered according to the sampling time sequence, and the first is markedCycle numberThe voltage at each sampling time is。
Wherein, the single period is the time length which can be divided according to the change condition of the load characteristic, and is allowed to be manually set, and the default setting is 1 day; time period of%) Refers to the length of time that has one or more complete single cycles, allowing manual setting, default to 7 days.
Step S102, for each sampling time, obtaining a voltage core value of the sampling time based on the multicycle voltage sampling value of the sampling time.
In the first placeFor example, the sampling time can obtain the m-period of the grid-connected point of the platform regionVoltage sampling value at each sampling timeBased onObtain the firstVoltage core value at each sampling instant。
Step S103, based on the voltage core values of the multiple sampling moments, a voltage core curve is obtained and a multi-step voltage distribution area taking the voltage core curve as the center is determined.
After obtainingVoltage core value at each sampling instantAfter that, can be based onVoltage core value at each sampling instantObtaining a voltage core curve corresponding to a single period, as shown in fig. 2; and taking the voltage core curve as a center, determining a multi-step voltage distribution area, wherein the larger the step of the voltage distribution area is, the farther the voltage core curve is. Such as the primary distribution region (short for the first step voltage distribution region), the secondary distribution region (short for the second step voltage distribution region), and the tertiary distribution region (short for the third step voltage distribution region) shown in fig. 2.
Step S104, based on the voltage distribution area where the voltage sampling value is located at each sampling time in the target period, the number of the voltage sampling values in each step voltage distribution area is obtained.
For example, if 15 minutes is taken as one period, then the grid-connected point of the area can be obtained within a certain 15 minutes in the past 1 dayVoltage samples at each sampling instant.
Taking the example of determining the voltage distribution area where the voltage sampling value at the 1 st sampling time is located:
based on fig. 2, it can be seen that the end value of each step distribution area changes along with the sampling time, the end values of the first-level distribution area, the second-level distribution area and the third-level distribution area at the 1 st sampling time can be determined, so as to determine which voltage distribution area the voltage sampling value at the 1 st sampling time is located.
In this way, the voltage distribution area where other sampling moments are located can be determined, and the number of voltage sampling values of the first-level distribution area can be countedNumber of voltage samples of the secondary distribution areaAnd the number of voltage sample values of the three-level distribution area。
Step S105, according to the ratio of the number of voltage sampling values in each step voltage distribution area in the number of single-period sampling, determining the voltage fluctuation condition of the grid-connected point of the platform area in the target period.
The method specifically comprises the following steps: acquiring the number of single-period samples; acquiring the duty ratio of the number of voltage sampling values in each step voltage distribution area in the number of single-period sampling; and determining the voltage fluctuation condition of the grid-connected point of the platform region in the target period according to the corresponding duty ratio of each step voltage distribution region.
Further, determining the voltage fluctuation condition of the grid-connected point of the platform area in the target period according to the corresponding duty ratio of each step voltage distribution area may include the following steps: in the ratio of the number of voltage sampling values in each step voltage distribution area in the single-period sampling number, if the ratio corresponding to the voltage distribution area with the smallest step is larger than or equal to a set value, determining that the voltage fluctuation condition of the grid-connected point of the platform area in the target period is stable; if the duty ratio corresponding to the voltage distribution area with the largest step is larger than or equal to a set value, determining that the voltage fluctuation condition of the grid-connected point of the platform area in the target period belongs to fluctuation.
Illustratively, in the above example, the number of single-period samples isFrom this, can obtain the corresponding duty ratio of one-level distribution district, second grade distribution district and tertiary distribution district respectively as:、 And 。
Among the first-level distribution area, the second-level distribution area and the third-level distribution area, the voltage distribution area with the smallest step is the first-level distribution area, the voltage distribution area with the largest step is the third-level distribution area, and the voltage distribution area with the middle step is the second-level distribution area; if the first-level distribution area corresponds to the duty ratioIf the voltage fluctuation condition of the grid-connected point of the platform area in the target period is more stable, if the voltage fluctuation condition is more than or equal to the set value; if the corresponding duty ratio of the three-level distribution areaIf the voltage fluctuation condition of the grid-connected point of the platform area in the target period is more fluctuation can be determined if the voltage fluctuation condition is more than or equal to the set value; if the corresponding duty ratio of the secondary distribution areaIf the voltage fluctuation condition of the grid-connected point of the platform area in the target period is more than or equal to the set value, the voltage fluctuation condition of the grid-connected point of the platform area in the target period can be determined to be generally stable, and the qualified requirement is met. The set value may be set to 0.9, and at this time, the determination flow is as shown in fig. 3.
After the voltage sampling values of the grid-connected points of the grid-connected region at the multi-period multi-sampling time are obtained, according to each sampling time, the voltage core value of the sampling time is obtained based on the multi-period voltage sampling values of the sampling time; based on the voltage core values of the multiple sampling moments, a voltage core curve is obtained, and a multi-step voltage distribution area taking the voltage core curve as the center is determined; the larger the step, the farther from the voltage core curve; obtaining the number of voltage sampling values in each step voltage distribution area based on the voltage distribution area where the voltage sampling value at each sampling time in the target period is located; according to the ratio of the number of the voltage sampling values in each step voltage distribution area in the single-period sampling number, the voltage fluctuation condition of the grid-connected point of the platform area in the target period is determined, and the voltage fluctuation condition of the grid-connected point of the platform area can be analyzed under the condition that new equipment is not needed.
In one embodiment, for each sampling time, based on the multicycle voltage sampling value at the sampling time, obtaining the voltage core value at the sampling time includes: for each sampling moment, obtaining a maximum voltage sampling value, a minimum voltage sampling value and a voltage median value of the sampling moment based on the multicycle voltage sampling value of the sampling moment; based on unit movement step length, carrying out a plurality of times of adjustment on the voltage median value, and based on each adjustment result, obtaining corresponding voltage median value upper difference and voltage median value lower difference; after each adjustment, the following steps are executed before the next adjustment: acquiring the voltage median upper difference and the voltage median lower difference corresponding to the adjustment, respectively acquiring a first value corresponding to the voltage median, a second value corresponding to the voltage median upper difference and a third value corresponding to the voltage median lower difference based on arithmetic average values of the multicycle voltage sampling values at the sampling time and the absolute values of the voltage median, the voltage median upper difference and the dispersion of the voltage median lower difference, and determining the minimum value among the first value, the second value and the third value; if the minimum value corresponds to the voltage median upper difference and the voltage median upper difference is larger than the maximum voltage sampling value, taking the voltage median upper difference as a voltage core value of the sampling moment, and stopping the next adjustment; if the minimum value corresponds to the voltage median difference and the voltage median difference is smaller than the minimum voltage sampling value, taking the voltage median difference as a voltage core value of the sampling moment and stopping the next adjustment; if the minimum value corresponds to the median voltage, the median voltage is taken as the core voltage value of the sampling moment, and the next adjustment is stopped.
The method for obtaining the voltage median value at the sampling moment based on the multicycle voltage sampling value at the sampling moment comprises the following steps: carrying out average processing on the multicycle voltage sampling value at the sampling moment; the result of the averaging process is taken as the median voltage value at the sampling time.
The current adjustment of the median voltage based on the unit movement step length may specifically include: adding 1 to the adjusted times to obtain an addition result; multiplying the addition result with the unit movement step length to obtain a multiplication result; adding the multiplication result to the voltage median to obtain the voltage median upper difference corresponding to the current adjustment; and subtracting the multiplication result from the voltage median value to obtain the voltage median value lower difference corresponding to the current adjustment.
To calculate the firstVoltage core value at each sampling instantFor example, in the following description, the unit movement step is written asThe adjusted number is noted as k. The unit movement step length is an artificial set value, and the default value can be 0.5.
Referring to fig. 4, in step S401, a selection is made ofIs marked as the minimum value ofSelectingThe maximum value of (2), marked asCalculating a median voltage: And order 。
Let k=0, go to steps S402 and S403, let k=k+1, and then calculate the median difference in voltageMedian voltage drop。
Step S404, calculatingRespectively with median value of voltageMedian upper difference of voltageMedian voltage dropArithmetic mean of the absolute values of the deviations of (a) to obtain a first value corresponding to the median value of the voltageSecond value corresponding to the upper difference in voltageThird value corresponding to the median pressure difference。
Step S405, judgingAndWhether the following relationship is satisfied:
if yes, go to step S406, if not, go to step S408.
Steps S406 and S407, letJudgingAndWhether the following relationship is satisfied: If yes, returning to the step S402, otherwise, going to the step S412; in step S412, let the first step Voltage core value at each sampling instantAnd ending the flow.
Step S408, judgingAndWhether the following relationship is satisfied:
if yes, go to step S409, if not, go to step S411.
Steps S409 and S410, letJudgingAndWhether the following relationship is satisfied: if yes, returning to step S402, otherwise, going to step S412, letting the third step Voltage core value at each sampling instantAnd ending the flow.
Step S411, let the voltage core valueAnd ending the flow.
In one embodiment, determining a multi-step voltage distribution region centered on a voltage core curve includes: for each sampling moment, taking a voltage core value of the sampling moment as a center, and determining an end value of the sampling moment; and obtaining a multi-step voltage distribution area according to the end value of each sampling moment.
Further, for each sampling time, determining an end value of the sampling time with a voltage core value of the sampling time as a center includes: sequencing the multicycle voltage sampling values and the voltage core values at the sampling time according to the sequence from small to large to obtain a voltage value sequence; obtaining the end value of the voltage distribution area corresponding to the first step at the sampling moment according to the b-th voltage value before the voltage core value and the b-th voltage value after the voltage core value in the voltage value sequence; according to the b+c voltage values before the voltage core value and the b voltage values before the voltage core value in the voltage value sequence, and the b voltage values after the voltage core value and the b+c voltage values after the voltage core value, the end values of the voltage distribution area corresponding to the second step at the sampling moment are obtained; and obtaining the end value of the voltage distribution area corresponding to the third step at the sampling moment according to the (b+c) th voltage value before the voltage core value and the (b+c) th voltage value after the voltage core value in the voltage value sequence.
In the first placeThe following description is given by way of example of the sampling times:
(1) Will be the first M period voltage sampling values at each sampling momentCore value of voltageOrdering in order of decreasing size, re-labeling asSetting a voltage core valueIs that。
(2) First-order distribution area) Comprising the number of voltage valuesSecond-level distribution area) Comprising the number of voltage values。
(3) If it isIf the number is odd, the step (4) is carried out, and if the number is not odd, the step (5) is carried out.
(4) Order theFirst, theThe end values of the first-level distribution areas corresponding to the sampling moments are respectively as follows: Thus, the first level distribution area is at the first level Interval of each sampling time) The method comprises the following steps: To step (6).
(5) Order theFirst, theThe end values of the first-level distribution areas corresponding to the sampling moments are respectively as follows: Thus, the first level distribution area is at the first level Interval of each sampling time) The method comprises the following steps: To step (6).
(6) If it isIf the number is odd, the step (7) is carried out, and if the number is not odd, the step (8) is carried out.
(7) Order theFirst, theThe end values of the secondary distribution areas corresponding to the sampling moments are as follows:
thus, the second level distribution area is at the first level Interval of each sampling time) The method comprises the following steps: And To step (9).
(8) Order theFirst, theThe end values of the secondary distribution areas corresponding to the sampling moments are as follows:
thus, the second level distribution area is at the first level Interval of each sampling time) The method comprises the following steps: And To step (9).
(9) First, theThe end values of the three-level distribution areas corresponding to the sampling moments comprise: And Thus, the third level distribution area is at the first levelInterval of each sampling time) The method comprises the following steps: And 。
The end values of the distribution areas corresponding to the other sampling moments can be obtained in the mode, so that the intervals of the distribution areas at the corresponding sampling moments are obtained, and the distribution areas at the levels, of which the intervals change along with the sampling moments, are formed.
In order to better understand the above method, an application example of the method for monitoring the voltage fluctuation of the cell of the present application is described in detail below.
The voltage sampling value of a certain area grid-connected point is acquired at intervals of 15 minutes in the past 7 days on the 5 th month and 30 th month of 2023, and the total number of the voltage sampling values of 7 single periods is 96. Based on 96 voltage sampling values in each day, by the method provided by the application, a corresponding single-period voltage core curve and each step voltage distribution area can be calculated, as shown in fig. 2.
Acquiring voltage sampling values of the grid-connected point of the platform area at 15 minutes intervals in the past 1 day, wherein the number of the voltage sampling values in the primary distribution area=56, Voltage sample value in the second level distribution region=20, Voltage sample value in three-level distribution regionNumber of voltage samples in single period =20=96, Thereby calculate=0.58<0.9，=0.2 <0.9, So the voltage fluctuation degree of the grid-connected point of the station area is "qualified".
It should be understood that, although the steps in the flowcharts related to the embodiments described above are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described in the above embodiments may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily performed sequentially, but may be performed alternately or alternately with at least some of the other steps or stages.
Based on the same inventive concept, the embodiment of the application also provides a monitoring device for monitoring the voltage fluctuation of the transformer area, which is used for realizing the above-mentioned monitoring method for the voltage fluctuation of the transformer area. The implementation of the solution provided by the device is similar to the implementation described in the above method, so the specific limitation in the embodiments of the monitoring device for the voltage fluctuation of one or more areas provided below may be referred to the limitation of the monitoring method for the voltage fluctuation of the area hereinabove, and will not be repeated herein.
In one embodiment, as shown in fig. 5, there is provided a monitoring apparatus for voltage fluctuation of a station, including:
The voltage acquisition module 501 is configured to acquire a voltage sampling value of a grid-connected point of a platform area at multiple sampling moments in multiple periods;
The core value calculating module 502 is configured to obtain, for each sampling time, a voltage core value at the sampling time based on a multicycle voltage sampling value at the sampling time;
A curve acquisition and partitioning module 503, configured to obtain a voltage core curve based on the voltage core values at multiple sampling moments and determine a multi-step voltage distribution area centered on the voltage core curve; the larger the step, the farther from the voltage core curve;
The intra-area number statistics module 504 is configured to obtain the number of voltage sampling values in each step voltage distribution area based on the voltage distribution area where the voltage sampling value at each sampling time in the target period is located;
The fluctuation exception processing module 505 is configured to determine a voltage fluctuation condition of the grid-connected point of the platform area in the target period according to a ratio of the number of voltage sampling values in each step voltage distribution area to the number of single-period sampling values.
In one embodiment, the core value calculation module 502 is further configured to: for each sampling moment, obtaining a maximum voltage sampling value, a minimum voltage sampling value and a voltage median value of the sampling moment based on the multicycle voltage sampling value of the sampling moment; based on unit movement step length, carrying out a plurality of times of adjustment on the voltage median value, and based on each adjustment result, obtaining corresponding voltage median value upper difference and voltage median value lower difference; after each adjustment, the following steps are executed before the next adjustment: acquiring the voltage median upper difference and the voltage median lower difference corresponding to the adjustment, respectively acquiring a first value corresponding to the voltage median, a second value corresponding to the voltage median upper difference and a third value corresponding to the voltage median lower difference based on arithmetic average values of the multicycle voltage sampling values at the sampling time and the absolute values of the voltage median, the voltage median upper difference and the dispersion of the voltage median lower difference, and determining the minimum value among the first value, the second value and the third value; if the minimum value corresponds to the voltage median upper difference and the voltage median upper difference is larger than the maximum voltage sampling value, taking the voltage median upper difference as a voltage core value of the sampling moment, and stopping the next adjustment; if the minimum value corresponds to the voltage median difference and the voltage median difference is smaller than the minimum voltage sampling value, taking the voltage median difference as a voltage core value of the sampling moment and stopping the next adjustment; if the minimum value corresponds to the median voltage, the median voltage is taken as the core voltage value of the sampling moment, and the next adjustment is stopped.
In one embodiment, the core value calculation module 502 is further configured to: carrying out average processing on the multicycle voltage sampling value at the sampling moment; the result of the averaging process is taken as the median voltage value at the sampling time.
In one embodiment, the core value calculation module 502 is further configured to: adding 1 to the adjusted times to obtain an addition result; multiplying the addition result with a unit movement step length to obtain a multiplication result; adding the multiplication result to the voltage median to obtain the upper difference of the voltage median corresponding to the current adjustment; and subtracting the multiplication result from the voltage median value to obtain the voltage median value lower difference corresponding to the current adjustment.
In one embodiment, the curve acquisition and partitioning module 503 is further configured to: for each sampling moment, taking a voltage core value of the sampling moment as a center, and determining an end value of the sampling moment; and obtaining a multi-step voltage distribution area according to the end value of each sampling moment.
In one embodiment, the curve acquisition and partitioning module 503 is further configured to: sequencing the multicycle voltage sampling values and the voltage core values at the sampling time according to the sequence from small to large to obtain a voltage value sequence; obtaining the end value of the voltage distribution area corresponding to the first step at the sampling moment according to the b-th voltage value before the voltage core value and the b-th voltage value after the voltage core value in the voltage value sequence; according to the b+c voltage values before the voltage core value and the b voltage values before the voltage core value in the voltage value sequence, and the b voltage values after the voltage core value and the b+c voltage values after the voltage core value, the end values of the voltage distribution area corresponding to the second step at the sampling moment are obtained; and obtaining the end value of the voltage distribution area corresponding to the third step at the sampling moment according to the (b+c) th voltage value before the voltage core value and the (b+c) th voltage value after the voltage core value in the voltage value sequence.
In one embodiment, the surge exception handling module 505 is further configured to: in the ratio of the number of voltage sampling values in each step voltage distribution area in the single-period sampling number, if the ratio corresponding to the voltage distribution area with the smallest step is larger than or equal to a set value, determining that the voltage fluctuation condition of the grid-connected point of the platform area in the target period is stable; if the duty ratio corresponding to the voltage distribution area with the largest step is larger than or equal to a set value, determining that the voltage fluctuation condition of the grid-connected point of the platform area in the target period belongs to fluctuation.
The modules in the monitoring device for the voltage fluctuation of the platform area can be all or partially realized by software, hardware and a combination thereof. The modules can be embedded in or independent of a processor in the platform region voltage fluctuation monitoring system in a hardware mode, and can also be stored in a memory in the platform region voltage fluctuation monitoring system in a software mode, so that the processor can conveniently call and execute the operations corresponding to the modules.
In one exemplary embodiment, a bay voltage fluctuation monitoring system is provided, which may be a server, the internal structure of which may be as shown in fig. 6. The system for monitoring the voltage fluctuation of the platform area comprises a processor, a memory, an Input/Output interface (I/O) and a communication interface. The processor, the memory and the input/output interface are connected through a system bus, and the communication interface is connected to the system bus through the input/output interface. Wherein the processor of the bay voltage fluctuation monitoring system is configured to provide computing and control capabilities. The memory of the district voltage fluctuation monitoring system comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The database of the transformer area voltage fluctuation monitoring system is used for storing data related to the method. The input/output interface of the platform voltage fluctuation monitoring system is used for exchanging information between the processor and external equipment. The communication interface of the transformer area voltage fluctuation monitoring system is used for communicating with an external terminal through network connection. The computer program is executed by a processor to implement a method of monitoring a voltage fluctuation of a cell.
It will be appreciated by those skilled in the art that the structure shown in fig. 6 is merely a block diagram of a portion of the structure associated with the present inventive arrangements and is not limiting of the bay voltage fluctuation monitoring system to which the present inventive arrangements are applied, and that a particular bay voltage fluctuation monitoring system may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a system for monitoring voltage fluctuation of a platform is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps in the above method embodiments when executing the computer program.
In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored which, when executed by a processor, carries out the steps of the respective method embodiments described above.
In one embodiment, a computer program product is provided, on which a computer program is stored, which computer program is executed by a processor for performing the steps of the various method embodiments described above.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high density embedded nonvolatile Memory, resistive random access Memory (ReRAM), magneto-resistive random access Memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (PHASE CHANGE Memory, PCM), graphene Memory, and the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration, and not limitation, RAM can be in various forms such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), etc. The databases referred to in the embodiments provided herein may include at least one of a relational database and a non-relational database. The non-relational database may include, but is not limited to, a blockchain-based distributed database, and the like. The processor referred to in the embodiments provided in the present application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic unit, a data processing logic unit based on quantum computing, or the like, but is not limited thereto.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be assessed as that of the appended claims.
Claims (10)
1. A method for monitoring voltage fluctuations in a cell, the method comprising:
Acquiring voltage sampling values of grid-connected points of a platform area at multi-period and multi-sampling moments;
for each sampling moment, obtaining a voltage core value of the sampling moment based on a multi-period voltage sampling value of the sampling moment;
Based on the voltage core values of the multiple sampling moments, a voltage core curve is obtained, and a multi-step voltage distribution area taking the voltage core curve as the center is determined; the larger the step, the farther from the voltage core curve;
obtaining the number of voltage sampling values in each step voltage distribution area based on the voltage distribution area where the voltage sampling value at each sampling time in the target period is located;
and determining the voltage fluctuation condition of the grid-connected point of the platform region in the target period according to the duty ratio of the number of the voltage sampling values in each step voltage distribution region in the number of single-period sampling.
2. The method of claim 1, wherein for each sampling instant, deriving the voltage core value for that sampling instant based on the multicycle voltage sample values for that sampling instant comprises:
For each sampling moment, obtaining a maximum voltage sampling value, a minimum voltage sampling value and a voltage median value of the sampling moment based on the multicycle voltage sampling value of the sampling moment;
based on unit movement step length, carrying out a plurality of times of adjustment on the voltage median value, and based on each adjustment result, obtaining corresponding voltage median value upper difference and voltage median value lower difference;
after each adjustment, the following steps are executed before the next adjustment:
acquiring the voltage median upper difference and the voltage median lower difference corresponding to the adjustment, respectively acquiring a first value corresponding to the voltage median, a second value corresponding to the voltage median upper difference and a third value corresponding to the voltage median lower difference based on arithmetic average values of the multicycle voltage sampling values at the sampling time and the absolute values of the voltage median, the voltage median upper difference and the dispersion of the voltage median lower difference, and determining the minimum value among the first value, the second value and the third value;
If the minimum value corresponds to the voltage median upper difference and the voltage median upper difference is larger than the maximum voltage sampling value, taking the voltage median upper difference as a voltage core value of the sampling moment, and stopping the next adjustment;
If the minimum value corresponds to the voltage median difference and the voltage median difference is smaller than the minimum voltage sampling value, taking the voltage median difference as a voltage core value of the sampling moment and stopping the next adjustment;
If the minimum value corresponds to the median voltage, the median voltage is taken as the core voltage value of the sampling moment, and the next adjustment is stopped.
3. The method of claim 2, wherein deriving the median voltage at the sampling instant based on the multicycle voltage samples at the sampling instant comprises:
carrying out average processing on the multicycle voltage sampling value at the sampling moment;
The result of the averaging process is taken as the median voltage value at the sampling time.
4. The method of claim 2, wherein the current adjustment of the median voltage value based on a unit movement step comprises:
Adding 1 to the adjusted times to obtain an addition result;
multiplying the addition result with a unit movement step length to obtain a multiplication result;
adding the multiplication result to the voltage median to obtain the upper difference of the voltage median corresponding to the current adjustment;
and subtracting the multiplication result from the voltage median value to obtain the voltage median value lower difference corresponding to the current adjustment.
5. The method of claim 1, wherein determining a multi-step voltage distribution region centered on a voltage core curve comprises:
For each sampling moment, taking a voltage core value of the sampling moment as a center, and determining an end value of the sampling moment;
and obtaining a multi-step voltage distribution area according to the end value of each sampling moment.
6. The method of claim 5, wherein for each sampling instant, determining the end value for that sampling instant centered on the voltage core value for that sampling instant comprises:
Sequencing the multicycle voltage sampling values and the voltage core values at the sampling time according to the sequence from small to large to obtain a voltage value sequence;
Obtaining the end value of the voltage distribution area corresponding to the first step at the sampling moment according to the b-th voltage value before the voltage core value and the b-th voltage value after the voltage core value in the voltage value sequence;
According to the b+c voltage values before the voltage core value and the b voltage values before the voltage core value in the voltage value sequence, and the b voltage values after the voltage core value and the b+c voltage values after the voltage core value, the end values of the voltage distribution area corresponding to the second step at the sampling moment are obtained;
and obtaining the end value of the voltage distribution area corresponding to the third step at the sampling moment according to the (b+c) th voltage value before the voltage core value and the (b+c) th voltage value after the voltage core value in the voltage value sequence.
7. The method of claim 1, wherein determining the voltage fluctuation of the grid-connected point of the grid-connected region in the target period according to the ratio of the number of voltage sampling values in each step voltage distribution region to the number of single-period sampling values comprises:
In the ratio of the number of voltage sampling values in each step voltage distribution area in the single-period sampling number, if the ratio corresponding to the voltage distribution area with the smallest step is larger than or equal to a set value, determining that the voltage fluctuation condition of the grid-connected point of the platform area in the target period is stable;
if the duty ratio corresponding to the voltage distribution area with the largest step is larger than or equal to a set value, determining that the voltage fluctuation condition of the grid-connected point of the platform area in the target period belongs to fluctuation.
8. A device for monitoring voltage fluctuations in a bay, the device comprising:
The voltage acquisition module is used for acquiring voltage sampling values of grid-connected points of the transformer area at multi-period and multi-sampling moments;
The core value calculation module is used for obtaining a voltage core value of each sampling moment based on the multicycle voltage sampling value of the sampling moment;
The curve acquisition and partitioning module is used for acquiring a voltage core curve based on the voltage core values of the multiple sampling moments and determining a multi-step voltage distribution area taking the voltage core curve as the center; the larger the step, the farther from the voltage core curve;
The intra-area quantity counting module is used for obtaining the quantity of the voltage sampling values in each step voltage distribution area based on the voltage distribution area where the voltage sampling value at each sampling moment in the target period is located;
and the fluctuation exception processing module is used for determining the voltage fluctuation condition of the grid-connected point of the platform area in the target period according to the duty ratio of the number of the voltage sampling values in each step voltage distribution area in the number of single-period sampling.
9. A system for monitoring voltage fluctuations in a cell, comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the method of any of claims 1 to 7 when executing the computer program.
10. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the method of any of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410413967.6A CN118011074A (en) | 2024-04-08 | 2024-04-08 | Method, device, system and storage medium for monitoring voltage fluctuation of transformer area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410413967.6A CN118011074A (en) | 2024-04-08 | 2024-04-08 | Method, device, system and storage medium for monitoring voltage fluctuation of transformer area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118011074A true CN118011074A (en) | 2024-05-10 |
Family
ID=90948741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410413967.6A Pending CN118011074A (en) | 2024-04-08 | 2024-04-08 | Method, device, system and storage medium for monitoring voltage fluctuation of transformer area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118011074A (en) |
-
2024
- 2024-04-08 CN CN202410413967.6A patent/CN118011074A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN116167289B (en) | Power grid operation scene generation method and device, computer equipment and storage medium | |
| CN115689018A (en) | Material demand prediction method, device, equipment, storage medium and program product | |
| CN114446019A (en) | Alarm information processing method, device, equipment, storage medium and product | |
| CN115907307B (en) | Power grid real-time data interaction-oriented online analysis method for carbon emission flow of power system | |
| CN118011074A (en) | Method, device, system and storage medium for monitoring voltage fluctuation of transformer area | |
| CN116933035A (en) | Data anomaly detection method, device, computer equipment and storage medium | |
| CN116467849A (en) | Quantification method, device, equipment and storage medium of indicating signal of nuclear instrument system | |
| CN116191398A (en) | Load prediction method, load prediction device, computer equipment and storage medium | |
| CN116401238A (en) | Deviation monitoring method, apparatus, device, storage medium and program product | |
| CN116306030A (en) | New energy prediction dynamic scene generation method considering prediction error and fluctuation distribution | |
| CN116305851A (en) | Method, device and computer equipment for determining critical heat flux density relation | |
| CN115481767A (en) | Operation data processing method and device for power distribution network maintenance and computer equipment | |
| CN114784795A (en) | Wind power prediction method and device, electronic equipment and storage medium | |
| CN103258144B (en) | Online static load modeling method based on data of fault recorder | |
| CN112488528A (en) | Data set processing method, device, equipment and storage medium | |
| CN113625074B (en) | Method and device for discriminating long-time flicker exceeding standard caused by transient electric energy quality disturbance | |
| CN116796926B (en) | Low-voltage side new energy resource aggregation capacity assessment method and device, medium and equipment | |
| CN117910214A (en) | Material performance optimization method, device, computer equipment and storage medium | |
| CN117233630B (en) | Method and device for predicting service life of lithium ion battery and computer equipment | |
| CN113077105B (en) | Long-false-day load prediction method and device | |
| CN116243168A (en) | Battery health determination method, device, equipment, medium and product | |
| CN117150796A (en) | Correction method and device for grid effect of fuel assembly and computer equipment | |
| CN115860377A (en) | Power consumption adjusting method, device, computer equipment, medium and program product | |
| CN116826773A (en) | Voltage sensitivity control device, voltage sensitivity control method and device | |
| CN115587677A (en) | Mutual information-based method and device for analyzing associated factors of power system load |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination |