摘要
提出了一种用于电压稳定性分析的支路型故障筛选和排序的快速算法,该方法分为4个阶段:①依据正常运行状态下的潮流解从所有预想事故中筛选出严重事故;②通过分析线路被置换后系统雅克比矩阵的最小奇异值,从所筛选出的事故中再次筛选出更严重的事故;③在指定的负荷水平下解潮流方程,从第二次筛选出的事故中再次筛选出最严重的事故;④对每个最严重的事故进行1次潮流计算,估计其最大负荷能力。通过New-England39节点系统和IEEE118节点系统算例表明,此算法计算量少,简单有效,易于实现。
A branch outage contingency screening and ranking method for voltage stability assessments is proposed. This method includes four phases. In the first phase, a critical contingency set is screened from all the potential contingencies according to the base case power flow results; in the second phase, the minimum singular value of the power flow jacobian matrix of substitution system is analyzed for filtering a more critical contingency set from the obtained critical contingency set; in the third phase, the most critical contingencies are screened from the critical contingency set obtained in the second phase by solving the power flow equations at the given load level; in the fourth phase, the maximum workload of the each most severe case is estimated by solving the power flow equations once for each case. The proposed approach is illustrated with the New-England 39-bus system and the IEEEI 18-bus system. The results show that the approach is very simple and efficient and is easy to be implemented.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2007年第1期44-48,共5页
Proceedings of the CSEE
基金
高等学校博士学科点专项科研基金项目(20050213006)
关键词
电力系统
电压稳定
支路故障
置换理论
故障筛选与排序
power system
voltage stability
branch outage
substitution theorem
contingency screening and ranking
