摘要
研究投入紧急控制后阻止系统失稳的有效性和经济性,为控制方案的制定、实施提供依据。总结了影响紧急控制有效性和经济性的3个要素:控制施加时间、控制量的大小和控制地点选择。以切机控制为例进行分析,结果表明:在超前失稳侧切机控制投入时间越早,控制效果越好;因闭环控制切机量无法一次精确计算,可以一次略微过量控制保障有效性或多次控制兼顾经济性;超前失稳侧切机的地点不同,阻止失稳的效果不同,需要寻找有效、经济的控制地点。
The effectiveness and economy of implementing the emergency control to restrain the system instability are researched for the establishment and implementation of control scheme. Three influencing elements of emergency control,i.e, moment,quantity and location,are summarized. The generator-shedding control is analyzed as an example and results show that,the earlier the instability-side control is carried out ,the better the control effect will be;since the accurate quantity of generator shedding for the closed-loop control can not be obtained by one calculation,its effectiveness can be guaranteed by an appreciably excessive control while its economy can be guaranteed by the multiple controls;the effect of instability restraint is different among different locations of instability-side generator shedding,an effective and economic control location should be searched.
出处
《电力自动化设备》
EI
CSCD
北大核心
2014年第11期1-6,共6页
Electric Power Automation Equipment
关键词
电力系统
暂态
稳定性
控制时间
控制地点
控制量
切机
electric power systems
transients
stability
control time
control location
control quantity
generator shedding
