快速开关技术应用现状与展望

Applications and Prospect of Fast Circuit Breakers

为了更好地利用快速开关解决限制短路电流、抑制电压暂降等电网问题,对实现首波开断的快速开关的关键技术,即快速涡流驱动技术和短路故障快速识别判据进行了论述,在此基础上,从利用快速分闸特性、利用快速合闸特性、利用一组快速开关相互配合等3个技术路线阐述了快速开关的应用现状,主要包括无损深度限流、串联补偿电容快速保护、快速解列和快速切机装置、电压暂降快速隔离装置、双电源快速切换装置等,最后对未来快速开关的新应用前景进行了展望。

The purpose of the paper is to help the application of fast circuit breakers to solve the problems of the electric power systems, such as, short circuit current limitation, voltage sag reduction, etc.. The key technologies of fast circuit breakers to realize the property of opening within one cycle are described, such as the fast eddy current drive mechanism and the fast identification criterion for short circuit. The applications of fast circuit breakers, such as current limitation without losses, fast protection of series compensator, fast splitting, fast isolation, and fast switching, are reviewed, which are classified into three technical lines of utilizing the fast opening property, utilizing the fast closing property and the coordination of several fast circuit breakers. The new application areas of fast circuit breakers in the future are also discussed.