Analysis and Improvement of Refusal-to-Move Fault in Three-Position GIS Disconnector

doi:10.3969/j.issn.1008-0198.2024.02.020

Hunan Electric Power ›› 2024, Vol. 44 ›› Issue (2): 148-154.doi: 10.3969/j.issn.1008-0198.2024.02.020

• Faults and Analysis • Previous Articles

Analysis and Improvement of Refusal-to-Move Fault in Three-Position GIS Disconnector

LIU Yufei¹, LIU Guofeng¹, YANG Rihui¹, HUANG Zhicong¹, LIU Jiawei¹, CHEN Jiahao¹, LUO Rui²

1. Guangdong Power Grid Co., Ltd., Guangzhou Power Supply Bureau, Guangzhou 510620, China;
2. Wuhan Dawei Digital Technology Co., Ltd., Wuhan 430205, China

Received:2023-12-14 Revised:2024-01-07 Online:2024-04-25 Published:2024-05-14

Abstract

Abstract: Based on the operating principle of the operating mechanism,secondary circuit design,and the experience of field operation and maintenance,the failure of the three-station GIS isolation switch is analyzed and investigated,and an improved scheme is proposed to replace the original travel switch with contactor node to realize the locking function and replace the slow motor to facilitate the braking.Through the comparison of motor current curve and cycle operation,the effectiveness of the scheme is verified, and the hidden danger of the device′s rejection is eliminated.

Key words: gas insulated switchgear disconnector, refusal-to-move fault, secondary ircuit, motor current

CLC Number:

TM564.1

LIU Yufei, LIU Guofeng, YANG Rihui, HUANG Zhicong, LIU Jiawei, CHEN Jiahao, LUO Rui. Analysis and Improvement of Refusal-to-Move Fault in Three-Position GIS Disconnector[J]. Hunan Electric Power, 2024, 44(2): 148-154.

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Analysis and Improvement of Refusal-to-Move Fault in Three-Position GIS Disconnector

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