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电网技术  2012 

风电系统多参数霍普夫分岔分析

, PP. 53-57

Keywords: 风电系统,电压稳定性,霍普夫分岔,双参数分岔,静止无功补偿器

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Abstract:

应用多参数霍普夫(Hopf)分岔分析方法研究含异步发电机的风电系统电压稳定性。全面考虑了风电场的有功功率、无功功率和静止无功补偿器对电压稳定性的影响,进行了风电系统双参数Hopf分岔研究,求得有功功率和无功功率的两参数Hopf分岔边界,以及静止无功补偿器参数(参考电压和放大倍数)和有功功率的Hopf分岔边界。结果表明,风电场吸收的无功功率限制了有功功率的注入能力,较大的参考电压和放大倍数有助于提高风电场有功出力,避免了电压振荡失稳,而参考电压和放大倍数具有一定的互补性,其共同作用有利于延迟Hopf分岔,提高风电系统的电压稳定性。

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