摘要
从电力系统脆弱性方面,对风电并网前后节点的脆弱性进行了比较分析。文中主要考虑电力系统脆弱性的两个方面:状态脆弱性方面主要利用改进的非线性保留算法求取节点临界电压,进而计算节点状态脆弱性指标;结构脆弱性方面是基于复杂网络理论对节点重要度进行评估;结合这两个方面构造综合脆弱度函数;本文对风电并网的潮流计算做了简单的分析介绍。最后以IEEE14节点系统为例,利用本文所提的方法,以某条线路断线作为扰动,计算了风电并网前后、不同的风电并网点以及同一并网点不同风速下的节点脆弱度,并对结果进行了分析。
In this paper,the node vulnerability of system with and without the wind farm is compared and analyzed.Two aspects of the vulnerability are mainly considered,one is to solve node critical voltage by using of improved nonlinear flow algorithm,then to calculate the state vulnerability of bus; another one is to calculate the structure vulnerability by assessing the node importance based on the complex network theory.Then a comprehensive vulnerability function is built by combing above two aspects and the power flow of power grid with wind farm is introduced simply.In the end,by taking IEEE14-bus system as example,the node vulnerability under different conditions is calculated by proposed method with the disturbance of line tripping.
出处
《现代电力》
北大核心
2013年第6期1-5,共5页
Modern Electric Power
基金
国家高技术研究发展计划(863计划)(2012AA050201)
关键词
状态脆弱性
结构脆弱性
综合脆弱度
风电并网
潮流
state vulnerability
structure vulnerability
integrated vulnerability
wind power integration
power flow
