摘要
针对大型城市配电网结构复杂、负荷密集、不均衡、功率损耗高等特点,提出了一种基于灵敏度与支路交换法相结合的配电网络重构算法。第一步用线路损耗对支路导纳的灵敏度来近似计算打开开关引起的网络有功损耗增量,以此确定应打开的环路上的支路开关;结合第一步的计算结果,第二步运用启发式规则进行支路交换,从而减少单独运用一种方法的不足,提高优化效果。算法兼顾了计算量与优化效果。算例表明:基于灵敏度和支路交换相结合的配电网重构算法正确有效,且计算量少、速度快,易于实时运用。
Considering the characteristics of large city distribution network,such as network complexity,concentrate load,asymmetric,high power loss,this paper proposes a reconfiguration algorithm of distribution system based on the combination of sensitivity and branch exchange.First step,it uses the real power loss sensitivity with respect to the conductance of candidate branches to decide the real power loss which decides which loop switch should be opened.Second,combining with the result of first step,it carries out branch exchange by using heuristic rule to reduce the defect due to using a method independently and improve the optimization effect.The algorithm takes both methods into consideration and it has given dual attention to the amount of computation and the optimized results.The example indicates that the distribution network reconfiguration algorithm based on the sensitivity and branch-exchange with fewer calculated amount and greater speed is correct,effective and easy real-time application.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2010年第10期62-65,70,共5页
Power System Protection and Control
基金
国家自然科学基金(50677046)~~
关键词
配电网重构
网损最小
灵敏度
支路交换
network reconfiguration
loss minimization
sensitivity
branch exchange
