Method for judging and processing operation state of secondary protection equipment of transformer substation

A technology for equipment operation and status judgment, applied in electrical components, circuit devices, instruments, etc., can solve the problems of large workload of manual judgment and large inspection volume, and achieve the effect of reducing manual judgment.

Pending Publication Date: 2022-04-29
YICHANG POWER SUPPLY CO OF STATE GRID HUBEI ELECTRIC POWER CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method replaces people to inspect designated places and solves some problems, but the amount of inspections is large, and the workload of manual judgment is still very large.

Method used

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  • Method for judging and processing operation state of secondary protection equipment of transformer substation
  • Method for judging and processing operation state of secondary protection equipment of transformer substation
  • Method for judging and processing operation state of secondary protection equipment of transformer substation

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Experimental program
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Embodiment Construction

[0035] The method for judging and processing the operating state of secondary protection equipment in a substation includes the following steps:

[0036] Step 1: Establish classifiers for indicator lights, pressure plates, and air switches, collect and mark classifier data samples, and calculate and extract feature values ​​for each classifier.

[0037] Step 1 includes the following steps:

[0038] S1.1. Establish a classifier:

[0039] According to the research of mainstream substation protection devices in the market, eight types of classifiers are established: square pressure plate retreat, square pressure plate throw, circular pressure plate retreat, circular pressure plate throw, indicator light on, indicator light off, open open, open open and close.

[0040] Identifying the states of indicator lights, pressure plates, and air switches requires the establishment of classifiers for each state. The circular and square appearances of the pressure plates are quite different...

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Abstract

The invention relates to a substation secondary protection equipment operation state judgment and processing method, which comprises the following steps of: establishing classifiers related to an indicator lamp, a pressing plate and an air switch, collecting and marking data samples of the classifiers, and calculating and extracting characteristic values of the classifiers; obtaining a fixed-point picture of the transformer substation protection device, intercepting a candidate recognition region, extracting a feature value of the candidate region through calculation, obtaining the confidence coefficient of the candidate recognition region, removing the region with the low confidence coefficient, and outputting the results of an indicator lamp, a pressing plate and an air switch on the transformer substation protection device. And judging a line operation mode according to the output indicating lamp, pressing plate and air switch results so as to judge whether the pressing plate is normally switched on or off, and outputting the results and uploading the results to a main station. According to the method, the inspection result can be automatically generated after inspection, the abnormal information of the protection device is extracted, the labor intensity of inspection is effectively reduced, the error rate is reduced, and intelligent monitoring of the transformer substation protection device is realized.

Description

technical field [0001] The invention relates to the technical field of substation protection, in particular to a method for judging and processing the operating state of secondary protection equipment in a substation. Background technique [0002] The monitoring and management of substation protection devices is related to whether the function and operation of the protection devices can work normally. When the operation mode of the power system changes, it often involves various operations of the protection device. If there is any improper operation, it will directly affect the realization of the relay protection function, and in severe cases, it will affect the safe operation of the power grid. [0003] With the promotion of the "integrated control" operation mode, substations are designed as unattended, and centralized data transmission and unified management have become an inevitable trend. As important secondary equipment, substation protection devices are still at a re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J13/00G06V30/18G06N3/04
CPCH02J13/00006H02J13/00034G06N3/049
Inventor 熊威刘庆国连升龚康陈泽华倪呈祥施微王雅铭黄禹范李平吴喜春陈灏泽
Owner YICHANG POWER SUPPLY CO OF STATE GRID HUBEI ELECTRIC POWER CO LTD
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