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电网技术  2015 

基于遗传模拟退火算法的SEDC与SSDC控制参数的协调优化

DOI: 10.13335/j.1000-3673.pst.2015.07.033, PP. 1983-1988

Keywords: 次同步振荡,附加励磁阻尼控制器,次同步阻尼控制器,特征值,遗传模拟退火算法

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Abstract:

针对高压直流输电系统中出现的次同步振荡(sub-synchronousoscillation,SSO)问题,利用遗传模拟退火(generationsimulatedanneal,GASA)算法协调优化了附加励磁阻尼控制器(supplementaryexcitationdampingcontroller,SEDC)和直流次同步阻尼控制器(sub-synchronousoscillationdampingcontroller,SSDC)的控制参数。首先基于特征值分析法,将控制参数的协同优化抽象为一个非线性规划问题;然后针对所研究的系统,建立包含SEDC和SSDC的系统状态方程,进而运用GASA算法进行求解;最后通过系统特征值分析和PSCAD仿真验证了优化参数的有效性。研究表明协调优化后的SEDC和SSDC可以显著减小系统特征根的实部,有效抑制SSO,保证电网的安全稳定运行。

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