静止无功补偿器对电压稳定影响的局部分叉分析

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静止无功补偿器(static var compensator,SVC)自身动态特性对电压稳定有着重大的影响。提出了…种电压稳定动态分析方法,解决了分割法存在的交接误差问题,并具有满意的计算精度和速度。利用该方法,在不同的失稳模式下,分析了SVC问常数对电压稳定的影响。通过分析发现,当系统单调失稳时,时间常数越大,失稳速度越快;当系统振荡失稳时,时间常数越大,振荡幅度越大。利用双参数延拓法,求取了分又边界曲线,结果表明,SVC放大倍数越大,分叉边界值也越大。
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