基于最优乘子潮流估计的故障筛选与排序  

Contingency Screening and Ranking Based on Optimal Multiplier Power Flow Evaluation

作　　者：张勇军[1] 蔡广林[1,2] 邱文锋 

机构地区：[1]华南理工大学电力学院,广州510640 [2]广东电力设计研究院,广州510600

出　　处：《电工技术学报》2010年第1期123-128,共6页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金重点项目(50337010);广东省自然科学基金(06025630)资助项目

摘　　要：提出了一种用于电压稳定安全评估的快速故障筛选和排序方法。该方法从故障前的临界点出发,通过最优乘子潮流法计算得到的故障后边界点来估计故障后临界点,当初始点接近临界点,通过一次迭代即可满足所需的计算精度,从而快速地识别出非严重故障。对于严重故障和某些特殊情况的故障进行了分析并提出了解决办法,保证了对严重故障的估计精度。通过某一实际703节点系统算例验证了该方法的有效性。A fast contingency screening and ranking method for voltage stability security assessment is proposed.The proposed method could trace from the pre-contingency critical point,using optimal multiplier power flow method to obtain the stability boundary point,the post-contingency critical point is estimated from it.The estimate precision is guaranteed by only one iteration step if the start point is close to the critical point,then the non-critical contingencies are quickly identified.To guarantee the computation precision of severe contingencies and some special case contingencies,this paper analyzes them in detail and solving method are also proposed.Numerical simulations on a practical China 703 bus system show that the proposed method is effective.

关 键 词：电压稳定 故障筛选与排序 最优乘子潮流 临界点 

分 类 号：TM712[电气工程—电力系统及自动化]