摘要
用于电力系统暂态稳定分析的结构保持法可以分析输电网络结构对暂态稳定性的影响,但已有的结构保持分析法仅计及了输电网络本身的作用,未能有效地计及暂态稳定的故障相关性,即未能计及不同失稳模式的影响。由于缺乏对割集进行有效分类的方法,必须对网络中全部割集计算脆弱性指标,才能找到网络中的薄弱环节,这样计算量很大。本文提出的方法不仅计及了故障相关性,而且所定义的指标计算简捷,有明显的物理意义。运用本文方法可以定量评价输电网结构对暂态稳定性的影响。
The structure preserving model was proposed and developed to account for affects of transmission network to transient stability,but it doesn't account for the fault dependency of transient stability.The most vulnerable cutset would be found based upon evaluating of all possible cutsets in the network.It is of low efficiency.In the proposed method,fault dependency is accounted,and a new vulnerable cutset index is defined.The affect of transmission elements on transient stability can be quantitatively evaluated.
出处
《东北电力学院学报》
1997年第3期1-6,共6页
Journal of Northeast China Institute of Electric Power Engineering
基金
国家自然科学基金
关键词
电力系统
暂态稳定
结构保持法
技术分析
power system,transient stability,structure preserving,critical cutset,vulnerable index