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Clustering method-based full-class voltage transformer operation performance evaluation method

A technology of voltage transformer and operating performance, applied in the field of electric power, can solve the problems of large collection parameters of voltage transformer, poor universality, and difficulty in popularizing the method, and achieve the effects of wide application range, improved reliability, and simple method

Active Publication Date: 2020-08-07
STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: the existing method for evaluating the operating performance of a voltage transformer needs additional components and analysis equipment or needs to collect many parameters, the method is difficult to popularize, and the universality is poor

Method used

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  • Clustering method-based full-class voltage transformer operation performance evaluation method
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  • Clustering method-based full-class voltage transformer operation performance evaluation method

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Embodiment Construction

[0033] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail in conjunction with the following examples. The schematic embodiments of the present invention and their descriptions are only used to explain the present invention, and are not intended as a guideline for the present invention. limit.

[0034] In this example, the original voltage data is the operation data of a 500kV substation in Sichuan Province, specifically including the voltage operation data of ten 500kV lines, two sections of 500kV busbars, and the A-phase voltage transformers on the high-voltage side of the two main transformers. The voltage transformers include Electromagnetic voltage transformers and capacitive voltage transformers, the voltage operation data collection time is from January 1, 2017 to September 17, 2018, one collection point per hour, a total of 15,000 collection points, the collected vol...

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Abstract

The invention discloses a clustering method-based full-class voltage transformer operation performance evaluation method, and solves the problems that an existing voltage transformer operation performance evaluation method needs to additionally add elements and analysis equipment or needs to acquire more parameters, and the method is high in popularization difficulty and poor in universality. Themethod comprises the following steps: actually measuring voltages of different voltage transformers at different time points to obtain a time sequence voltage vector of each voltage transformer; performing data cleaning, calculating the similarity SK-L between each time sequence voltage vector, and calculating the average similarity between each voltage vector and other voltage vectors to obtain asimilarity vector representing all voltage transformers. The method has the advantages of high evaluation reliability, wide application range, simple method and the like.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a method for evaluating the operating performance of all types of voltage transformers based on a clustering method. Background technique [0002] The operation status evaluation of voltage transformers in the power grid is mainly carried out in the form of regular off-line power outage maintenance, through on-site testing and manual analysis. This method has disadvantages such as large workload, low efficiency, and untimely detection of fault defects, which makes the identification and judgment of abnormal state of voltage transformer poor in timeliness, resulting in a large number of voltage transformers running in the state of super-inspection period, thus affecting the safety and reliability of the power grid. , economic operation has caused certain hidden dangers, and on the other hand, unplanned power outages, trade disputes and even safety accidents caused by the a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q10/00G06Q50/06G06K9/62G01R35/02
CPCG06Q10/0639G06Q10/20G06Q50/06G01R35/02G06F18/23
Inventor 刘鹍李金嵩史强艾兵何大可张翔罗睿希刘苏婕曾兰罗玛张鹏金鑫
Owner STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST