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电网技术  2015 

适用于双馈风电场的改进电流突变量选相元件

DOI: 10.13335/j.1000-3673.pst.2015.10.042, PP. 2959-2964

Keywords: 双馈风电场,电流突变量选相,电流分配系数,正序故障电流补偿

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Abstract:

应用于双馈风电场的电流突变量选相元件受风电场特殊的暂态特性影响,其动作性能受到了严峻的挑战。从双馈风电场故障前后等效电势和阻抗的变化特点出发,分析了电流突变量选相元件受风电场影响的详细机理;提出了一种基于正序故障电流补偿的改进电流突变量选相方案,该方案能够消除风电场暂态特性的变化对选相结果造成的影响;仿真实验结果表明所提方案显著改善了传统电流突变量选相元件的性能。

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