CN113507169B - Method and system for improving identification accuracy of user transformer in station area based on frequency offset data - Google Patents
Method and system for improving identification accuracy of user transformer in station area based on frequency offset data Download PDFInfo
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- CN113507169B CN113507169B CN202110901588.8A CN202110901588A CN113507169B CN 113507169 B CN113507169 B CN 113507169B CN 202110901588 A CN202110901588 A CN 202110901588A CN 113507169 B CN113507169 B CN 113507169B
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
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Abstract
The invention discloses a method and a system for improving the identification accuracy of a station area user transformer based on frequency offset data, which comprises the following steps: obtaining frequency offset data of electric equipment and a concentrator; calculating the distance between the frequency offset data and the characteristic value of the frequency offset data; judging whether the distance is smaller than a preset distance, and when the distance is smaller than the preset distance, the electric equipment belongs to the current platform area. The invention aims to provide a method and a system for improving the accuracy of the identification of the user transformer in a platform area based on frequency offset data, which improve the accuracy of the identification of the user transformer on the basis of no installation of equipment and no addition of an algorithm, thereby realizing the intelligent identification of the relationship of the user transformer.
Description
Technical Field
The invention relates to the technical field of electric power system detection, in particular to a method and a system for improving the identification accuracy of a station area user transformer based on frequency offset data.
Background
In the field of low voltage distribution networks, electricity management departments need to build subscriber profiles to ensure that marketing management can properly manage subscribers. Therefore, the electricity management department needs to define the information such as the attribution of the user file, the network topology identification relationship and the like. However, as the power grid is built and developed, the number of users is increased and changed, the user-to-user relationship of the transformer area is changed frequently, lines are crossed, and the underground lines make the changed user-to-user relationship difficult to identify in time, so that the acquisition success rate, automatic meter reading, line loss management and other businesses are affected.
The traditional mode of carrying out the user and becoming discernment at present is for the manual work combines district recognition appearance, and not only inefficiency is wasted time and energy moreover, and the effect is not good.
The current user-change identification scheme comprises the following three methods:
method 1 power supply range analysis method: according to the specification of the power supply radius of the transformer and the user position analysis of the user-variable relation, manual field analysis is needed, and the efficiency is low.
Method 2 Power failure event analysis method: and (3) carrying out power failure measures on specific areas, determining a user-to-user relationship, and influencing normal life of power consumers in the transformer area.
Method 3 carrier meter reading communication network analysis method: and the user-to-user relationship identification is carried out according to the communication characteristics of the carrier meter reading communication network, additional equipment is required to be added, and the complexity is high.
Disclosure of Invention
The invention aims to provide a method and a system for improving the accuracy of the identification of the user transformer in a platform area based on frequency offset data, which improve the accuracy of the identification of the user transformer on the basis of no installation of equipment and no addition of an algorithm, thereby realizing the intelligent identification of the relationship of the user transformer.
The invention is realized by the following technical scheme:
a method for improving the identification accuracy of a user transformer in a station area based on frequency offset data comprises the following steps:
s1: obtaining frequency offset data of electric equipment and a concentrator;
s2: calculating the distance between the frequency offset data and the characteristic value of the frequency offset data;
s3: judging whether the distance is smaller than a preset distance, and when the distance is smaller than the preset distance, the electric equipment belongs to the current platform area.
Preferably, the preset distance is 5.00ppm.
Preferably, the generation of the characteristic value of the frequency offset data comprises the following steps:
step 1: acquiring first frequency offset data of the electric equipment and the concentrator, wherein the first frequency offset data is acquired when the electric equipment is installed;
step 2: grouping the electric equipment according to the first frequency offset data;
step 3: and calculating an average value of the first frequency offset data of the electric equipment in each group, wherein the average value is used as the characteristic value of the frequency offset data.
Preferably, the step 2 includes the following substeps:
selecting one electric equipment at will, and sequentially calculating the difference value of the first frequency offset data corresponding to the electric equipment and the first frequency offset data corresponding to the rest electric equipment;
judging whether the difference value is smaller than a preset difference value, and dividing the electric equipment corresponding to the difference value into a group when the difference value is smaller than the preset difference value.
Preferably, the preset difference is 1.00ppm.
A system for improving the identification accuracy of a station area user transformer based on frequency offset data comprises a first acquisition module, a second acquisition module, a calculation module and a judgment module;
the first acquisition module is used for acquiring frequency offset data of the electric equipment and the concentrator;
the second acquisition module is used for acquiring the characteristic value of the frequency deviation data;
the calculation module is used for calculating the distance between the frequency offset data and the characteristic value of the frequency offset data;
the judging module is used for judging whether the distance is smaller than a preset distance, and when the distance is smaller than the preset distance, the electric equipment belongs to the current area.
Preferably, the preset distance is 5.00ppm.
Preferably, the second acquisition module comprises an acquisition unit, a grouping unit and a calculation unit;
the acquisition unit is used for acquiring first frequency offset data of the electric equipment and the concentrator, and the first frequency offset data is acquired when the electric equipment is installed;
the grouping unit is used for grouping the electric equipment according to the first frequency offset data;
the computing unit is used for computing the average value of the first frequency offset data of the electric equipment in each group, and the average value is used as the characteristic value of the frequency offset data.
Preferably, the grouping unit comprises a calculating subunit and a judging subunit;
the calculating subunit is used for arbitrarily selecting one electric equipment, and sequentially calculating the difference value of the first frequency offset data corresponding to the electric equipment and the first frequency offset data corresponding to the rest electric equipment;
the judging subunit is configured to judge whether the difference is smaller than a preset difference, and divide the electric devices corresponding to the difference into a group when the difference is smaller than the preset difference.
Preferably, the preset difference is 1.00ppm.
Compared with the prior art, the invention has the following advantages and beneficial effects:
under the condition of not increasing the workload of equipment and personnel, the user-to-user relationship is identified through the frequency deviation data, so that manpower and material resources are saved, and the accuracy of identifying the user-to-user relationship in the platform area is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention. In the drawings:
FIG. 1 is a flow chart diagram of a user change identification method of the present invention;
FIG. 2 is a diagram of a user variable identification application scenario of the present invention.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present invention and the descriptions thereof are for illustrating the present invention only and are not to be construed as limiting the present invention.
Example 1
The embodiment provides a method for improving the identification accuracy of a station area user transformer based on frequency offset data, which is shown in fig. 1 and comprises the following steps:
step 1: when a user installs electric equipment, normally communicating and obtaining frequency offset data from a physical layer;
it will be appreciated that the powered device may be in communication with the concentrator when installed, and that frequency offset data for the device and the concentrator may be obtained from the physical layer during the communication. After the electric equipment is successfully installed, the position relation and the connection relation between the electric equipment and the concentrator are relatively stable, so that certain stability exists in frequency offset data between the electric equipment and the concentrator, and the data has reference significance in household change relation identification.
Step 2: establishing a file of the frequency offset data packet, and recording the characteristic value of the frequency offset data of each group of electric equipment;
specifically, the frequency offset data calculated in the step 1 are recorded in the frequency offset grouping file of the platform in a grouping mode, and if the frequency offset data of a plurality of electric devices are consistent or similar (the difference value of the frequency offset data of the equipment is less than or equal to 1.00 ppm), the electric devices are combined into a group, and the characteristic value of the frequency offset data of the group is the average value of the frequency offset data of the group. In the scenario shown in fig. 2, a frequency offset packet profile that may be established is shown in table 1 below:
TABLE 1 frequency offset grouping archive
Step 3: periodically checking frequency offset data during subsequent communication; the method specifically comprises the following steps:
when the electric equipment is communicated with the concentrator, the physical layer calculates the frequency offset data of the electric equipment, compares the frequency offset data calculated at this time with the stored characteristic values of each group of frequency offset data, and judges that the distance meets the judgment condition (the judgment condition is that the distance between the frequency offset data and the characteristic values of a certain group of frequency offset data in the file is within 5.00 ppm), the electric equipment can be considered to belong to the local area, and otherwise, the electric equipment does not belong to the local area.
Example 2
The embodiment provides a system for improving the identification accuracy of a station area user transformer based on frequency offset data, which comprises a first acquisition module, a second acquisition module, a calculation module and a judgment module;
the first acquisition module is used for acquiring frequency offset data of the electric equipment and the concentrator;
the second acquisition module is used for acquiring the characteristic value of the frequency offset data;
specifically, the second acquisition module in the present embodiment includes an acquisition unit, a grouping unit, and a calculation unit;
the acquisition unit is used for acquiring first frequency offset data of the electric equipment and the concentrator, and the first frequency offset data is acquired when the electric equipment is installed;
the grouping unit is used for grouping the electric equipment according to the first frequency offset data;
the computing unit is used for computing the average value of the first frequency deviation data of the electric equipment in each group, and the average value is used as the characteristic value of the frequency deviation data.
The grouping unit comprises a calculating subunit and a judging subunit;
the computing subunit is used for arbitrarily selecting one electric device and sequentially computing the difference value of the first frequency offset data corresponding to the electric device and the first frequency offset data corresponding to the other electric devices;
and the judging subunit is used for judging whether the difference value is smaller than a preset difference value, and dividing the electric equipment corresponding to the difference value into a group when the difference value is smaller than the preset difference value, wherein the preset difference value is 1.00ppm in the embodiment. Namely: if the difference value of the first frequency offset data of the devices is less than or equal to 1.00ppm, the devices are combined into a group.
The computing module is used for computing the distance between the frequency offset data and the characteristic value of the frequency offset data;
and the judging module is used for judging whether the distance is smaller than a preset distance, and when the distance is smaller than the preset distance, the electric equipment belongs to the current platform area. In this example, the preset distance is 5.00ppm. Namely: the frequency deviation data and a certain group of frequency deviation data characteristic value are within 5.00ppm, the electric equipment can be considered to belong to the local area, otherwise, the electric equipment does not belong to the local area.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (2)
1. The method for improving the identification accuracy of the user transformer of the station area based on the frequency offset data is characterized by comprising the following steps:
s1: obtaining frequency offset data of electric equipment and a concentrator;
s2: calculating the distance between the frequency offset data and the characteristic value of the frequency offset data;
s3: judging whether the distance is smaller than a preset distance or not, and when the distance is smaller than the preset distance, the electric equipment belongs to a current platform area;
wherein the preset distance is 5.00ppm;
the generation of the characteristic value of the frequency offset data comprises the following steps:
step 1: acquiring first frequency offset data of the electric equipment and the concentrator, wherein the first frequency offset data is acquired when the electric equipment is installed;
step 2: grouping the electric equipment according to the first frequency offset data;
step 3: calculating an average value of first frequency offset data of the electric equipment in each group, wherein the average value is used as a characteristic value of the frequency offset data;
wherein, the step 2 comprises the following substeps:
selecting one electric equipment at will, and sequentially calculating the difference value of the first frequency offset data corresponding to the electric equipment and the first frequency offset data corresponding to the rest electric equipment;
judging whether the difference value is smaller than a preset difference value, and dividing the electric equipment corresponding to the difference value into a group when the difference value is smaller than the preset difference value;
wherein the preset difference is 1.00ppm.
2. The system for improving the identification accuracy of the station area user transformer based on the frequency offset data is characterized by comprising a first acquisition module, a second acquisition module, a calculation module and a judgment module;
the first acquisition module is used for acquiring frequency offset data of the electric equipment and the concentrator;
the second acquisition module is used for acquiring the characteristic value of the frequency deviation data;
the calculation module is used for calculating the distance between the frequency offset data and the characteristic value of the frequency offset data;
the judging module is used for judging whether the distance is smaller than a preset distance, and when the distance is smaller than the preset distance, the electric equipment belongs to the current area;
wherein the preset distance is 5.00ppm;
the second acquisition module comprises an acquisition unit, a grouping unit and a calculation unit;
the acquisition unit is used for acquiring first frequency offset data of the electric equipment and the concentrator, and the first frequency offset data is acquired when the electric equipment is installed;
the grouping unit is used for grouping the electric equipment according to the first frequency offset data;
the computing unit is used for computing the average value of the first frequency offset data of the electric equipment in each group, and the average value is used as the characteristic value of the frequency offset data;
the grouping unit comprises a calculating subunit and a judging subunit;
the calculating subunit is used for arbitrarily selecting one electric equipment, and sequentially calculating the difference value of the first frequency offset data corresponding to the electric equipment and the first frequency offset data corresponding to the rest electric equipment;
the judging subunit is used for judging whether the difference value is smaller than a preset difference value, and dividing the electric equipment corresponding to the difference value into a group when the difference value is smaller than the preset difference value;
wherein the preset difference is 1.00ppm.
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| CN202110901588.8A CN113507169B (en) | 2021-08-06 | 2021-08-06 | Method and system for improving identification accuracy of user transformer in station area based on frequency offset data |
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| CN113507169B true CN113507169B (en) | 2024-01-26 |
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| CN114867018A (en) * | 2022-06-06 | 2022-08-05 | 西安交通大学 | Device identification authentication method, system and storage medium using carrier frequency offset |
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| CN110084718A (en) * | 2019-04-25 | 2019-08-02 | 国网湖南省电力有限公司 | A kind of family Tai Qu becomes the accurate method of calibration of relationship and device |
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| CN112883998A (en) * | 2021-01-12 | 2021-06-01 | 珠海中慧微电子有限公司 | Power distribution area household transformation relation identification method |
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| CN104918268A (en) * | 2014-03-10 | 2015-09-16 | 国基电子（上海）有限公司 | Home base station and frequency correcting method thereof |
| KR101815904B1 (en) * | 2017-01-13 | 2018-01-08 | (주)이젝스 | Identification system for electronic apparatus and identification method therefor |
| CN108318759A (en) * | 2018-01-25 | 2018-07-24 | 国网浙江海宁市供电有限公司 | A kind of various dimensions taiwan area family becomes relation recognition method |
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