摘要
为考虑可靠性参数的不确定性对可靠性评估结果的影响,先将可靠性参数通过区间估计表示成联系数形式。提出了一种新的实现配电网分区的方法,此法在对原始网络节点进行一定方式处理后,通过矩阵分析及运算便能获得分区后区域节点的可靠性参数及其邻接矩阵。采用可达性分析法判断配电网故障后果类型,用warshall算法来求取可达性矩阵,并分析了馈线容量约束对故障后负荷区域节点转供的影响,再结合联系数的运算法则对配电网进行可靠性评估,从而获得联系数形式的可靠性指标。算例结果验证了该方法的正确性和有效性。
In order to consider the influence of the uncertainty of reliability parameters on reliability evaluation, the reliability parameters are expressed as a form of connection number through interval estimation. A new method is proposed to achieve distribution network partitioning, in which both the zone node reliability parameters and adjacency matrix can be acquired through matrix analysis and operations after dealing the original net node in a certain way. The reachability analysis method is used in judging the failure result type. Warshall algorithm is used to obtain the regional node teachability matrix. On the basis of reachability analysis, the influence of capacity constraint on load point is further analyzed. Combining the rule of connection number and the method aforementioned, the reliability indexes in the form of connection numbers are obtained. The application of the proposed method to a calculation example verifies its correctness and effectiveness.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2012年第21期74-79,155,共7页
Power System Protection and Control
基金
西华大学研究生创新基金(Ycjj201163)
西华大学省级重点实验室开放研究基金(SZJJ2009-015)
"流体及动力机械"省部共建教育部重点实验室项目(SBZDPY-11-13
14)
关键词
联系数
配电网分区
可达性分析
WARSHALL算法
不确定性
容量约束
connection number
distribution network partitioning
reachability analysis
Warshall algorithm
uncertainty
capacity constraint
