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Metering point operation error monitoring method and system suitable for 10KV wiring line

A technology of wiring lines and metering points, applied in measurement devices, measuring electrical variables, instruments, etc., can solve the problems of time-consuming and labor-intensive, low detection efficiency, high labor cost, etc., to avoid a lot of labor and material costs, The effect of improving work efficiency and precise positioning

Active Publication Date: 2021-11-16
STATE GRID ZHEJIANG ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The measurement and testing of public transformers (referred to as public transformers) and dedicated transformers (referred to as special transformers) on 10KV wiring lines (referred to as medium voltage lines) is carried out by testers with testing equipment Going to the site, due to the wide distribution of medium-voltage lines, and the large number of public and special variables, it will be time-consuming and labor-intensive to perform regular and comprehensive inspections; if random inspections are performed, the detection efficiency of measurement abnormalities will be low
[0003] At present, the manual periodic verification scheme is still adopted for the verification of the metering points on the medium-voltage line, that is, the comprehensive verification of the metering points of the medium-voltage line is carried out regularly. This verification method is time-consuming Energy-intensive, and check efficiency is low
In addition, medium-voltage lines are widely distributed, and there are many metering points for public and special variables. The existing verification method is periodic comprehensive inspection. This method cannot detect abnormalities in time, and comprehensive verification requires a lot of labor costs.
[0004]There are great difficulties in judging the type of abnormality of the metering point of the medium-voltage line, locating the location of the abnormality, and identifying the cause, which requires a lot of labor costs to investigate, which is not conducive to power supply companies Therefore, it is necessary to provide a system that can detect and accurately locate abnormalities in time

Method used

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  • Metering point operation error monitoring method and system suitable for 10KV wiring line
  • Metering point operation error monitoring method and system suitable for 10KV wiring line
  • Metering point operation error monitoring method and system suitable for 10KV wiring line

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Embodiment 1

[0038] This embodiment provides a measurement point operation error monitoring method suitable for 10KV wiring lines, the process is as follows figure 2 shown.

[0039] Such as figure 1 As shown, the typical topology of the medium voltage line is as follows:

[0040] Each medium-voltage line has a gateway meter located at the outlet side of the substation to supply power to the line (called measuring point and metering point), and the line will be connected to multiple transformers for power consumption, including public transformers and special transformers (public and private transformers) Change users can also supply power to the line). At the same time, there will be multiple section switches on the line, and multiple tie switches between medium-voltage lines.

[0041] In the medium voltage scenario, the basic unit of analysis is the line, and the calculation unit includes all the measurement points on the line, that is, the measurement points on the outlet side of the...

Embodiment 2

[0072] This embodiment provides a metering point operation error monitoring system suitable for 10KV wiring lines, which includes a power acquisition unit, a data merging unit, an energy conservation equation unit, a physical quantity calculation unit, an equation solution unit, and a metering point positive and abnormal determination unit.

[0073] Power acquisition unit: obtain the power of all metering points on the 10KV distribution line in a certain area in the past n metering cycles;

[0074] Data merging unit: regard the measuring point gateway table on the line and the metering points of public and special transformers as a set, and perform data merging according to whether the contents of the set are consistent;

[0075] Energy conservation equation unit: establish the energy conservation equations between each metering point according to the topological structure of the wiring line and the law of energy conservation, and transform and organize the energy conservation...

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Abstract

The invention discloses a metering point operation error monitoring method and system suitable for a 10KV wiring line. According to the technical scheme adopted by the invention, the method comprises the steps: obtaining the electric quantity of all metering points on a 10KV wiring line in a certain region in n metering periods in the past; measuring point gateway meters and public and special transformer metering points on a line are regarded as a set, and carrying out data merging according to whether the content of the set is consistent or not; establishing an energy conservation equation set among the metering points according to a distribution line topological structure and an energy conservation law, and converting and arranging the energy conservation equation set; calculating each corresponding physical quantity in the equation set according to the electric quantity data; substituting each physical quantity into the equation set for solving to obtain a comprehensive error of the metering points; and determining whether the metering point is abnormal. The method only depends on data, the law of conservation of energy serves as the theoretical basis, the requirement for the data volume is not high during calculation, and the abnormal metering point can be positioned timely and accurately.

Description

technical field [0001] The invention relates to the field of measurement equipment operation error monitoring, in particular to a measurement point operation error monitoring method and system suitable for 10KV wiring lines. Background technique [0002] The measurement and testing of public transformers (referred to as public transformers) and special transformers (referred to as special transformers) on 10KV wiring lines (referred to as medium-voltage lines) is carried out by testers carrying testing equipment to the site. Due to the wide distribution of medium-voltage lines, public, The number of special variables is large, and it will be time-consuming and labor-intensive if it is regularly and comprehensively detected; if it is randomly detected, the detection efficiency of measurement anomalies will be low. [0003] At present, the manual periodic verification scheme is still adopted for the verification of the metering points on the medium-voltage line, that is, the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/00G01R35/04
CPCG01R35/00G01R35/04
Inventor 张宏达胡瑛俊袁健王佳颖李熊姚力
Owner STATE GRID ZHEJIANG ELECTRIC POWER
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