CN112986721A - Method and device for identifying relation between power grid ammeter and transformer in transformer area - Google Patents
Method and device for identifying relation between power grid ammeter and transformer in transformer area Download PDFInfo
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Abstract
The application provides a method and a device for identifying the relation between a power grid ammeter and a transformer in a transformer area, wherein the method comprises the following steps: s1, regularly reading power failure event recording files of a transformer and a user ammeter in a transformer area; s2, acquiring power failure time and power-on time from the power failure event record file; s3, judging whether the power failure time difference and the power-on time difference of the transformer area and the user electric meter are both within an allowable error range, if so, calibrating the transformer of the transformer area to be pre-corresponding to the user electric meter; s4, counting the number of times of pre-corresponding of the transformer area and the user ammeter in a certain time period; and S5, comparing the pre-corresponding times with a preset value, and obtaining a final judgment result whether the transformer of the transformer area corresponds to the user ammeter or not according to the comparison result. The relation between the transformer and the user ammeter is judged based on the objective power failure event, the passive interference adding mode is achieved, the additional installation of an interference device is not needed, the system structure is simplified, and meanwhile the development and maintenance cost is saved.
Description
Technical Field
The application belongs to the technical field of power monitoring, and particularly relates to a method and a device for identifying a relation between a power grid ammeter and a transformer in a transformer area.
Background
In recent years, due to frequent changes (such as migration, capacity expansion, cutover and distribution) caused by the construction and development of a power grid, the increase of the number of power consumers, the change of power consumption addresses of power consumption customers and the like, the change of the user change relationship of the power consumption customer station area occurs. Due to condition limitation, such as line crossing, buried lines and the like, the membership information of the electricity consumption customer meter and the household change is difficult to update in time, and the accuracy of the basic data of the power grid is influenced. In addition, with the continuous progress of urbanization development, residential areas are continuously increased, the power consumption load is increased, the number of newly-added transformer areas is large, and many problems are exposed in the aspect of management, such as illegal power consumption of some low-voltage users and private line overlapping, so that not only can a meter reader not accurately judge which transformer the electric energy meter of the user belongs to supply power in the meter reading process, and the completion of the line loss index of the transformer areas is influenced (in an electric power system, the transformer areas refer to the power supply range or the power supply area of one transformer). Meanwhile, due to the fuzzy attribution of the client files, metering and debt disputes among clients are caused, the image of a power supply enterprise is influenced, the operation risk of the power supply enterprise is increased, and meanwhile, the enterprise benefit of the power supply enterprise is also influenced to a certain degree.
The existing method for identifying the relationship between the grid electric meter and the transformer in the transformer area generally installs an electric quantity perturbator on the power supply side of the grid transformer, and determines that a corresponding user is supplied with power by a specific transformer by actively adding interference, for example, the patent application with the publication number "CN 110048511A" and the patent name "system and method for dynamically monitoring the relationship between the grid electric meter and the transformer in the transformer area on line based on perturbation on the power supply side" is disclosed. However, this method requires an additional perturbator, which not only increases the cost, but also makes the structure of the supervision system more complex and difficult to maintain. Therefore, a new method capable of more conveniently, effectively and accurately identifying the membership of the grid ammeter and the transformer in the transformer area needs to be developed.
The invention content is as follows:
in view of this, the application provides a method and a device for identifying a relationship between a power grid ammeter and a transformer in a transformer area, so that the relationship between a power grid user and the transformer can be accurately and conveniently identified without additionally installing any equipment. In order to achieve the purpose, the technical scheme adopted by the application is as follows:
in a first aspect, the application provides a method for identifying a relationship between a grid ammeter and a transformer in a transformer area, including:
s1, regularly reading a power failure event recording file of a transformer area and a power failure event recording file of a user ammeter, wherein the power failure event recording file records power failure time and power-on time corresponding to a power failure event;
s2, acquiring the power failure time and the power-on time of the transformer in the transformer area from the transformer power failure event record file, and acquiring the power failure time and the power-on time of the user ammeter from the user ammeter power failure event record file;
s3, judging whether the power failure time difference and the power-on time difference of the transformer area and the user electric meter are both within an allowable error range, if so, calibrating the transformer of the transformer area to be pre-corresponding to the user electric meter;
s4, counting the number of times of pre-corresponding of the transformer area and the user ammeter in a certain time period;
and S5, comparing the pre-corresponding times with a preset value, and obtaining a final judgment result whether the transformer of the transformer area corresponds to the user ammeter or not according to the comparison result.
Optionally, the step S5, obtaining a final determination result of whether the transformer of the transformer area corresponds to the user electric meter according to the comparison result specifically includes:
and judging whether the pre-corresponding times are larger than the preset value or not, if so, judging that the transformer of the transformer area corresponds to the user ammeter.
Optionally, after the step S5, the method further includes:
generating a judgment file according to the final judgment result and storing the judgment file;
and sending the judgment file to the user mobile terminal and the user management center at the same time.
Optionally, the timing reading is specifically a weekly reading or a biweekly reading, and the certain time period is within a half year or a quarter.
Optionally, the step S1 further includes:
and reading the transformer clock and the user electric meter clock so as to calibrate the transformer clock and the user electric meter clock according to the standard GPS clock.
In a second aspect, the present application provides a grid ammeter and transformer relation identification device, including:
the timing reading module is used for regularly reading a power failure event record file of the transformer area and a power failure event record file of the user ammeter, and the power failure event record file records power failure time and power-on time corresponding to the power failure event;
the acquisition module is used for acquiring the power failure time and the power-on time of the transformer in the transformer area from the transformer power failure event record file and acquiring the power failure time and the power-on time of the user ammeter from the user ammeter power failure event record file;
the judging and calibrating module is used for judging whether the power failure time difference value and the power-on time difference value of the transformer area and the user electric meter are both within an allowable error range, and if so, calibrating the transformer of the transformer area and the user electric meter to be pre-corresponding;
the counting module is used for counting the number of times of pre-corresponding of the transformer area and the user electric meter in a certain time period;
and the judging module is used for comparing the pre-corresponding times with a preset value and obtaining a final judgment result whether the transformer of the transformer area corresponds to the user electric meter or not according to the comparison result.
Optionally, the apparatus further comprises:
the generating module is used for generating and storing a judgment file according to the final judgment result;
and the sending module is used for sending the judgment file to the user mobile terminal and the user management center at the same time.
Optionally, the timing reading module is configured to read once every week or once every two weeks; the counting module is set to count the number of times of pre-corresponding of the transformer area and the user electric meter in half a year or one quarter.
Optionally, the apparatus further comprises:
and the calibration module is used for reading the transformer clock and the user electric meter clock and calibrating the transformer clock and the user electric meter clock according to the standard GPS clock.
Compared with the prior art, the method has the following beneficial technical effects:
(1) the relation between the transformer of the transformer area and the user ammeter is judged based on the objectively existing power failure event, the passive interference adding mode is adopted, an additional interference device is not needed, the system structure is simplified, and meanwhile the development and maintenance cost is saved;
(2) calibrating a transformer clock and a user electric meter clock at regular time, so that the judgment result of the relation between the transformer in the transformer area and the user electric meter is more accurate;
(3) the relationship between the transformer of the transformer area and the user electric meter is finally judged based on the multiple pre-corresponding results in a certain time period, and the identification of the household variable relationship is more accurate than that based on a single matching result.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a flow chart of a method for identifying a relationship between a power grid electric meter and a transformer in a transformer area according to the present application;
fig. 2 is a block diagram of a structure of the power grid electric meter and transformer relation identification device of the transformer area.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments.
Fig. 1 is a flowchart of a method for identifying a relationship between a grid electricity meter and a transformer in a distribution area according to the present application, and as shown in fig. 1, the present application provides a method for identifying a relationship between a grid electricity meter and a transformer in a distribution area, including:
s1, regularly reading a power failure event recording file of a transformer area and a power failure event recording file of a user ammeter, wherein the power failure event recording file records power failure time and power-on time corresponding to a power failure event;
generally, all current user electric meters are smart electric meters, and the current user electric meters can provide an electric meter clock and record the power failure condition of a user side to form an electric meter power failure event record file. Similarly, each transformer in each area can provide a clock and record the power failure condition of the transformer side to form a power failure event record file of the transformer side.
In addition, the timing reading may be specifically once per week or once per two weeks, and the reading frequency may also be modified according to actual needs, which is not limited in the present application.
S2, acquiring the power failure time and the power-on time of the transformer in the transformer area from the transformer power failure event record file, and acquiring the power failure time and the power-on time of the user ammeter from the user ammeter power failure event record file;
according to the clocks of the transformer and the user ammeter, the power failure event record file of the transformer records the time of each power failure event and the power-on time of the transformer side of the transformer area, and the power failure event record file of the user ammeter records the time of each power failure event and the power-on time of the user ammeter side. Therefore, the power failure time and the power-on time of the transformer in the transformer area and the power failure time and the power-on time of the user electric meter can be obtained according to the power failure event record file.
S3, judging whether the power failure time difference and the power-on time difference of the transformer area and the user electric meter are both within an allowable error range, if so, calibrating the transformer of the transformer area to be pre-corresponding to the user electric meter;
the allowable error range may be determined according to practical situations, for example, may be determined to be 0.0-0.2ms, and the like, and this is not particularly limited in this application.
S4, counting the number of times of pre-corresponding of the transformer area and the user ammeter in a certain time period;
including but not limited to within a half year or a quarter.
And S5, comparing the pre-corresponding times with a preset value, and obtaining a final judgment result whether the transformer of the transformer area corresponds to the user ammeter or not according to the comparison result.
Specifically, the final determination result of whether the transformer of the transformer area corresponds to the user electricity meter obtained according to the comparison result in step S5 is as follows:
and judging whether the pre-corresponding times are larger than the preset value or not, if so, judging that the transformer of the transformer area corresponds to the user ammeter.
In practical operation, the preset value may be determined according to the reading frequency in step S1, and the higher the reading frequency is, the larger the value of the preset value is.
As an optional implementation manner, after the step S5, the method further includes:
generating a judgment file according to the final judgment result and storing the judgment file;
and sending the judgment file to the user mobile terminal and the user management center at the same time.
The determination file can be specifically sent to a user mobile terminal and a user management center in a 3G, 4G, 5G mobile network or wireless local area network or other modes, the user mobile terminal includes but is not limited to a mobile phone or an IPAD, and the user management center is used for performing centralized and unified management on the use state of the user electric meter.
As an optional implementation manner, the step S1 further includes:
and reading the transformer clock and the user electric meter clock so as to calibrate the transformer clock and the user electric meter clock according to the standard GPS clock.
The calibration formula is: the corrected time is the time before correction + the clock offset value.
In addition, the power failure time and the power-on time of the transformer in the transformer area read previously and the power failure time and the power-on time of the user ammeter can be corrected according to the corrected clock, and the correction formula is
Corrected power failure time is equal to original power failure time plus clock deviation value
And the corrected power-on time is equal to the original power-on time plus the clock deviation value.
The method and the device calibrate the transformer clock and the user electric meter clock at regular time, so that the judgment result of the relation between the transformer and the user electric meter is more accurate; and finally judging the relation between the transformer and the user electric meter based on a plurality of times of pre-corresponding results within a certain time period, so that the user variable relation is more accurate than the user variable relation identified according to a single matching result.
Fig. 2 is a block diagram of a structure of a device for identifying a relationship between a grid electric meter and a transformer in a transformer area, where as shown in fig. 2, the device includes:
the timing reading module 210 is configured to read a power failure event record file of the transformer in the distribution room and a power failure event record file of the user electric meter at a timing, where the power failure event record file records power failure time and power-on time corresponding to a power failure event;
the timing reading may be specifically once per week or once per two weeks, and the reading frequency may also be modified according to actual needs, which is not limited in the present application.
The obtaining module 220 is configured to obtain the power failure time and the power up time of the transformer in the transformer area from the transformer power failure event record file, and obtain the power failure time and the power up time of the user electric meter from the user electric meter power failure event record file;
according to the clocks of the transformer and the user ammeter, the power failure event record file of the transformer records the time of each power failure event and the power-on time of the transformer side of the transformer area, and the power failure event record file of the user ammeter records the time of each power failure event and the power-on time of the user ammeter side. Therefore, the power failure time and the power-on time of the transformer in the transformer area and the power failure time and the power-on time of the user electric meter can be obtained according to the power failure event record file.
A determining and calibrating module 230, configured to determine whether a power failure time difference and a power up time difference between the transformer and the user electric meter are both within an allowable error range, and if so, calibrate the transformer and the user electric meter in advance;
the allowable error range may be determined according to practical situations, for example, may be determined to be 0.0-0.2ms, and the like, and this is not particularly limited in this application.
The counting module 240 is used for counting the number of times that the transformer of the transformer area and the user electric meter are pre-corresponding within a certain time period;
including but not limited to within a half year or a quarter.
And the judging module 250 is configured to compare the pre-corresponding times with a preset value, and obtain a final judgment result whether the transformer in the transformer area corresponds to the user electric meter according to the comparison result.
In practical operation, the preset value may be determined according to the reading frequency in step S1, and the higher the reading frequency is, the larger the value of the preset value is.
As an optional implementation, the apparatus further comprises:
the generating module is used for generating and storing a judgment file according to the final judgment result;
and the sending module is used for sending the judgment file to the user mobile terminal and the user management center at the same time.
The determination file can be specifically sent to a user mobile terminal and a user management center in a 3G, 4G, 5G mobile network or wireless local area network or other modes, the user mobile terminal includes but is not limited to a mobile phone or an IPAD, and the user management center is used for performing centralized and unified management on the use state of the user electric meter.
As an optional implementation, the apparatus further comprises:
and the calibration module is used for reading the transformer clock and the user electric meter clock and calibrating the transformer clock and the user electric meter clock according to the standard GPS clock.
The calibration formula is: the corrected time is the time before correction + the clock offset value.
In addition, the power failure time and the power-on time of the transformer in the transformer area read previously and the power failure time and the power-on time of the user ammeter can be corrected according to the corrected clock, and the correction formula is
Corrected power failure time is equal to original power failure time plus clock deviation value
And the corrected power-on time is equal to the original power-on time plus the clock deviation value.
The relation between the transformer and the user ammeter is judged based on the objective power failure event, the passive interference adding mode is achieved, the additional installation of an interference device is not needed, the system structure is simplified, and meanwhile the development and maintenance cost is saved.
In the embodiments provided in the present application, it should be understood that the disclosed system and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the modules is only one logical functional division, and other divisions may be realized in practice, for example, multiple units or components may be combined or integrated into another device, or some features may be omitted, or not executed.
The modules described as separate parts may or may not be physically separate, and parts displayed 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 can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, each functional module in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (9)
1. The method for identifying the relation between the power grid ammeter and the transformer in the transformer area is characterized by comprising the following steps:
s1, regularly reading a power failure event recording file of a transformer area and a power failure event recording file of a user ammeter, wherein the power failure event recording file records power failure time and power-on time corresponding to a power failure event;
s2, acquiring the power failure time and the power-on time of the transformer in the transformer area from the transformer power failure event record file, and acquiring the power failure time and the power-on time of the user ammeter from the user ammeter power failure event record file;
s3, judging whether the power failure time difference and the power-on time difference of the transformer area and the user electric meter are both within an allowable error range, if so, calibrating the transformer of the transformer area to be pre-corresponding to the user electric meter;
s4, counting the number of times of pre-corresponding of the transformer area and the user ammeter in a certain time period;
and S5, comparing the pre-corresponding times with a preset value, and obtaining a final judgment result whether the transformer of the transformer area corresponds to the user ammeter or not according to the comparison result.
2. The method for identifying the relationship between the grid electricity meter and the transformer of the transformer area according to claim 1, wherein the step S5 for obtaining the final determination result of whether the transformer of the transformer area and the user electricity meter correspond to each other according to the comparison result specifically comprises:
and judging whether the pre-corresponding times are larger than the preset value or not, if so, judging that the transformer of the transformer area corresponds to the user ammeter.
3. The method for identifying the relationship between the grid electricity meter and the transformer in the transformer area according to claim 1 or 2, wherein the step S5 is followed by the steps of:
generating a judgment file according to the final judgment result and storing the judgment file;
and sending the judgment file to the user mobile terminal and the user management center at the same time.
4. The method for identifying the relationship between grid meters and transformer areas according to claim 1 or 2, wherein the timing reading is a weekly reading or a biweekly reading, and the certain period of time is within a half year or a quarter.
5. The method for identifying the relationship between the grid electricity meter and the transformer in the transformer area according to claim 1 or 2, wherein the step S1 further comprises:
and reading the transformer clock and the user electric meter clock so as to calibrate the transformer clock and the user electric meter clock according to the standard GPS clock.
6. Grid ammeter and platform district transformer relation recognition device, its characterized in that includes:
the timing reading module is used for regularly reading a power failure event record file of the transformer area and a power failure event record file of the user ammeter, and the power failure event record file records power failure time and power-on time corresponding to the power failure event;
the acquisition module is used for acquiring the power failure time and the power-on time of the transformer in the transformer area from the transformer power failure event record file and acquiring the power failure time and the power-on time of the user ammeter from the user ammeter power failure event record file;
the judging and calibrating module is used for judging whether the power failure time difference value and the power-on time difference value of the transformer area and the user electric meter are both within an allowable error range, and if so, calibrating the transformer of the transformer area and the user electric meter to be pre-corresponding;
the counting module is used for counting the number of times of pre-corresponding of the transformer area and the user electric meter in a certain time period;
and the judging module is used for comparing the pre-corresponding times with a preset value and obtaining a final judgment result whether the transformer of the transformer area corresponds to the user electric meter or not according to the comparison result.
7. A grid meter to bay transformer relationship identification arrangement as recited in claim 6, wherein said arrangement further comprises:
the generating module is used for generating and storing a judgment file according to the final judgment result;
and the sending module is used for sending the judgment file to the user mobile terminal and the user management center at the same time.
8. The grid meter and transformer relationship identification device of claim 6 or 7, wherein the timing reading module is configured to read once per week or once per two weeks; the counting module is set to count the number of times of pre-corresponding of the transformer area and the user electric meter in half a year or one quarter.
9. The grid meter and area transformer relationship identification arrangement according to claim 8, further comprising:
and the calibration module is used for reading the transformer clock and the user electric meter clock and calibrating the transformer clock and the user electric meter clock according to the standard GPS clock.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110126652.XA CN112986721A (en) | 2021-01-29 | 2021-01-29 | Method and device for identifying relation between power grid ammeter and transformer in transformer area |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110126652.XA CN112986721A (en) | 2021-01-29 | 2021-01-29 | Method and device for identifying relation between power grid ammeter and transformer in transformer area |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05157795A (en) * | 1991-12-02 | 1993-06-25 | Yokogawa Hewlett Packard Ltd | Apparatus and method for measuring transformer parameter |
| CN202204851U (en) * | 2011-07-28 | 2012-04-25 | 陕西银河电力仪表股份有限公司 | Integrated meter-reading multifunctional ammeter box |
| CN107831355A (en) * | 2017-10-26 | 2018-03-23 | 国网重庆市电力公司检修分公司 | Transformer overvoltage method for early warning based on a large amount of overvoltage number data |
| CN110456206A (en) * | 2019-09-09 | 2019-11-15 | 广东电网有限责任公司 | A kind of family becomes the judgment method of relationship and judges system |
| CN111856167A (en) * | 2019-04-19 | 2020-10-30 | 宁波奥克斯高科技有限公司 | Detection method of box-type transformer and transformer |
-
2021
- 2021-01-29 CN CN202110126652.XA patent/CN112986721A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05157795A (en) * | 1991-12-02 | 1993-06-25 | Yokogawa Hewlett Packard Ltd | Apparatus and method for measuring transformer parameter |
| CN202204851U (en) * | 2011-07-28 | 2012-04-25 | 陕西银河电力仪表股份有限公司 | Integrated meter-reading multifunctional ammeter box |
| CN107831355A (en) * | 2017-10-26 | 2018-03-23 | 国网重庆市电力公司检修分公司 | Transformer overvoltage method for early warning based on a large amount of overvoltage number data |
| CN111856167A (en) * | 2019-04-19 | 2020-10-30 | 宁波奥克斯高科技有限公司 | Detection method of box-type transformer and transformer |
| CN110456206A (en) * | 2019-09-09 | 2019-11-15 | 广东电网有限责任公司 | A kind of family becomes the judgment method of relationship and judges system |
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