Hydraulic operating mechanisms for high voltage circuit breakers: Progress evolution and future trends  

作　　者：LIU Wei XU Bing YANG HuaYong ZHAO HongFei WU JunHui 

机构地区：[1]State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China [2]Henan Pinggao Electric Co., Ltd, Pingdingshan 467001, China

出　　处：《Science China(Technological Sciences)》2011年第1期116-125,共10页中国科学（技术科学英文版）

基　　金：This work was supported by the National High Technology Research and Development Program of China (Grant No.2007AA041803);Doctoral.Programs Foundation of Ministry of Education of China (Grant No.20090101110041);Program for New Century Excellent Talents in University

摘　　要：High voltage circuit breakers are the most important protection and control apparatus in power system. As a core part of circuit breakers, the operating mechanisms have a trend to be hydraulic-style in high voltage power grid. Compared with other hydranlic systems, the hydraulic operating mechanisms have the characteristics of high hydraulic pressure, high speed, high power and long-term waiting etc., and it is because of the characteristics that the hydraulic operating mechanisms become dif- ficult to be developed and have been arousing significant study interest from more and more researchers as well as their promising applications. Therefore, it is significant to summarize the hydraulic operating mechanisms on their development, characteristics, and key technologies etc. In this review, the evolution process and recent studies of hydraulic operating mechanisms at home and abroad are viewed. The review then focuses on the characteristics and key technologies of hydraulic operating mechanisms, especially on time and velocity characteristics, high-speed cylinder cushioning, fast response and great flow rate control valve, temperature compensation, system monitoring and fault diagnosis, intelligent operation, energy storage module, etc. In the end, the future trends of this field are presented.

关 键 词：hydraulic operating mechanism high voltage circuit breaker control valve opening and closing motion cushioning 

分 类 号：TM561.3[电气工程—电器] TM561