Flexible Measures to Depress Switching Overvoltage in UHV Transmission System

摘要：

Concept of flexible measures was put forward to depress the switching over-voltage, on the basis of insistent demand of the UHV transmission system to depress switching over-voltage deeply and shortcomings of the existing measures on both economics and operation reliabilities. Working mechanism of the controlled metal oxide arrester (CMOA, shortly) was mainly discussed. Effect of CMOA on depressing the switching over-voltage could be demonstrated by the pilot UHV AC experimental project being built in China. The results indicated that CMOA was very useful. It could depress the maximum phase-to-ground switching over-voltage to 1.6 p.u., even with circuit breakers without closing resistors. Study on the flexible measures to depress the switching over-voltage has both academic and engineering values in the UHV transmission system, needing lots of extremely careful and diligent work.

关键词： absorbing and enduring transient energy characteristic closing resistor CMOA controlled strategy flexible depressing measures phase controlled circuit breakers switching over-voltage test measures the UHV transmission system voltage-current charac

作者: Xiujuan Chen Weijiang Chen Haibin Shen Zhiming He Chao Xia

会议类型: 国际会议

会议名称: The International Conference on Electrical Engineering 2009(2009 电机工程国际会议)

会议地点: 沈阳

会议语种:英文

页码: 1-5

在线出版日期: 2009-07-05（万方平台首次上网日期，不代表论文的发表时间）