防止电力系统频率崩溃的紧急控制  

Emergency control for preventing frequency collapse of power system

作　　者：袁季修[1] 

机构地区：[1]华北电力设计院,北京100011

出　　处：《电力自动化设备》2002年第4期1-4,共4页Electric Power Automation Equipment

摘　　要：防止电力系统频率崩溃是防止系统大面积停电的一项重要措施。系统频率崩溃往往是由于系统频率降低到超出发电机组承受能力 ,形成连锁反应所致。根据国内外大量研究成果 ,讨论了机组在频率异常时的运行能力 ,分析了系统在低频减负荷等紧急控制作用下的频率特性及其与机组特性协调的问题 。Perventing frequency collapse is an important prevention measure of widespread blackout.Frequency collapse is often caused by the cascade reactions due to the system frequency declined beyond the withstanding capability of turbo sets.The operation capability of turbo sets under off nominal frequency is commented based on a host of research results.The system frequency characteristic upon the effects of emergent under frequency load shedding and its coordination with the turbo set capability are analyzed.The applicable analytic and calculating method and example are illustrated.

关 键 词：紧急控制 低频减负荷 频率动态特性 频率崩溃 电力系统 

分 类 号：TM712[电气工程—电力系统及自动化]