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电网技术  2010 

适用于微网孤岛运行的低频减载方法

, PP. 16-20

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Abstract:

提出了一种微网频率控制新策略。该策略由PID控制器构成频率的闭环控制回路,根据系统的功率缺额,调整PID控制算法,并分别采用粗调轮与细调轮低频减载(under-frequencyloadshedding,UFLS)、紧急启动轮UFLS等策略进行频率控制。紧急启动轮UFLS控制策略可以提高微网的系统稳定性和可靠性;粗调轮与细调轮UFLS控制策略可以适应不同的功率缺额,使控制的负荷量尽可能细化。仿真结果验证了方法的有效性。

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