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电网技术  2012 

华中电网的直流紧急功率支援问题

, PP. 104-108

Keywords: 直流输电,紧急功率支援,特高压交流,电力系统稳定与安全

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Abstract:

研究了1000kV交流特高压试验示范线建成后,直流输电调制对华北—华中互联电网运行安全稳定的作用。分析了直流紧急功率支援的机制以及实现方法,并对华中电网内直流系统发生双极闭锁故障时,华北—华中互联电网和特高压交流输电通道承受故障冲击的能力及系统的安全稳定水平进行了仿真分析。通过一回直流双极闭锁故障时,华中电网中4回直流输电线路之间紧急功率支援的仿真研究结果表明,采用直流输电系统紧急功率支援对保持互联系统稳定性和供电可靠性具有良好的效果。

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