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电网技术  2014 

多落点HVDC附加阻尼控制的最优控制点研究

DOI: 10.13335/j.1000-3673.pst.2014.07.005, PP. 1746-1752

Keywords: 最优控制点,控制敏感因子,低频振荡,多落点高压直流输电系统,直流附加控制

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Abstract:

四川电网是典型直流多落点系统,如何选择最适合的直流线路来阻尼区域间振荡需要研究。在对系统线性化处理的基础上,通过理论推导得出了可以衡量直流阻尼控制器安装地点优劣的指标——控制敏感因子。该指标综合考虑了直流阻尼控制器对目标振荡模式的阻尼效果和对其余振荡模式的影响,其值越大表明控制点对区域间振荡模式可控性越好,且对其余振荡模式的影响越小。进一步给出了控制敏感因子的实用化计算步骤。通过对四川实际电网多种运行方式下的BPA数据模型仿真计算,验证了所提指标的正确性,为直流附加阻尼控制器最优安装地点的选择提供了实用化计算指标和一定程度的理论解释。

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