摘要
SH抽水蓄能电站的两台机组在水泵工况时,由于区外发生故障导致机组功率大幅度摇摆,最后由低功率保护将两台机跳开。在对现场录波图分析的基础上,对保护的动作进行了分析并进行了故障回放;对电力系统中抽水蓄能机组在水泵运行状态下,受到外界扰动后容易发生功率振荡的原理进行了分析,对该类预想故障进行了仿真计算,并指出其危害。
The power of pumped-storage power plant swung greatly at pumping mode and there was a large disturbance outside the plant. It was shed by lower-power protection finally. The power oscillation does harm not only to the plant but also to power system. The reason to cause the power oscillation of power plant at pumping mode is pointed out and the phenomena of the machine and the action of relay protections are introduced.
出处
《江苏电机工程》
2005年第5期9-11,共3页
Jiangsu Electrical Engineering
关键词
抽水蓄能
水泵运行
功率振荡
继电保护
pumped-storage power
pumping mode
power oscillation
relay protection
