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电网技术  2009 

含串补的交直流输电系统次同步谐振抑制

, PP. 20-23

Keywords: 次同步谐振(SSR),晶闸管控制的串联电容补偿器(TCSC),相位补偿法,次同步阻尼控制器(SSDC)

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Abstract:

以含串补的交直流混合输电系统为研究对象,通过在交流系统中采取有效措施削弱次同步谐振。首先用可控串联电容补偿器(thyristor-controlledseriescapacitor,TCSC)代替部分固定串补;然后进行TCSC主电路参数选择和基于相位补偿法的TCSC附加次同步阻尼控制器设计;最后用PSCAD/EMTDC软件进行仿真验证。结果表明,该策略可以提高系统阻尼,有效抑制系统的次同步谐振,改善系统的稳定性。

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