Vibration Characteristics of GIS Isolating Switch Under Different Operating Conditions

被引：0
|
作者：
Feng J. [1 ]
Sun L. [1 ]
Chen W. [2 ]
Su Y. [1 ]
Shu Y. [1 ]
Zhao L. [2 ]
机构：
[1] Baoshan Power Supply Bureau, Yunnan Power Grid Co., Ltd., Baoshan
[2] School of Electrical Engineering, Sichuan University, Chengdu
来源：
Gaodianya Jishu/High Voltage Engineering | 2021年 / 47卷 / 12期
基金：
国家重点研发计划;
关键词：
Box dimension; Frequency spectrum; GIS operating status; Isolating switch; Similarity of separation matrix; Vibration characteristics;
D O I：
10.13336/j.1003-6520.hve.20201325
中图分类号：
学科分类号：
摘要：
The vibration signal is effective information reflecting the operating state of the isolating switch. In order to study the vibration characteristics of the gas insulated switchgear (GIS) under different operating conditions, a test platform with a 110 kV single-phase sub-box GIS as the main body was built. In the experiment, a variety of actual GIS operating states are simulated, and the GIS vibration signals under different currents, different filling gases, different air pressures and different contact states of the disconnector contacts are studied. The research results show that the vibration signal amplitude of the isolating switch is proportional to the square of the current. The vibration signal propagates in different filling gases, and it will be attenuated to different degrees due to the viscous absorption of the gas, moreover, the increase of the gas pressure will cause the increase of intermolecular collisions and decrease the vibration signal amplitude. After the isolation switch contacts the defect, the vibration signal amplitude decreases and the fundamental frequency increases. Based on the vibration characteristics of the GIS isolation switch under different operating conditions, the matrix similarity and the fractal box dimension are the characteristic quantities, which can well identify the contact state of the isolation switch. The research can provide a theoretical basis for the state diagnosis of GIS isolating switch based on vibration signal. © 2021, High Voltage Engineering Editorial Department of CEPRI. All right reserved.
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页码：4314 / 4322
页数：8
相关论文
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