摘要
针对换相开关调节低压配电网中存在的三相不平衡问题,提出一种多目标优化的三相不平衡调节策略。该策略基于全局优化算法,根据负载情况,同时考虑开关故障情况、开关换相频率、开关寿命等多目标优化控制,避免了大电流换相、某一开关频繁换相等关键技术,并对无法调节平衡或开关全部故障的极端情况提出了解决方案;该策略分析了优化算法与常规算法的互补性,同时兼顾运行速度与硬件设备存储空间的配合问题,提出相应的解决方案,为进一步完善三相不平衡调节策略提出改进方案;经过仿真验证,该策略可对多种复杂工况做出反应,并可针对相应情况及时提出解决方案,明显缓解三相不平衡现象。
Aiming at the problem of three-phase unbalance in the phase-change switch adjustment of the low voltage distribution network, this paper presents a multi-objective optimization strategy for regulating three-phase unbalance. The strategy is based on the global optimization algorithm. According to the load condition, multi-objective optimal control such as the switch fault condition, the switching frequency and switch life are considered. The strategy can solve the extreme cases that can not be adjusted and balanced or fault of all the switches, at the same time, it also avoids large current commutation and the frequent switching of a certain switch, etc. It also analyzes the complementarity between the optimization algorithm and the conventional algorithm. And by taking into account the the coordination problem between the operation speed and hardware storage space, the strategy puts forward the corresponding solutions which can improve the three-phase unbalance regulation. Through simulation verification, the strategy can respond to a variety of complex conditions and present solutions for corresponding situation and can obviously alleviate the three-phase unbalance phenomenon.
作者
缪伟
任思源
庞英俊
张国庆
李艳军
MIAO Wei REN Siyuan PANG Yingjun ZHANG Guoqing LI Yanjun(State Grid Wuhu Electric Power Supply Company, Wuhu 241002, Anhui Province, China Baoji University of Arts and Sciences, Baoji 721013, Shaanxi Province, China China EPRI Science ＆ Technology Co., Ltd, Changping District, Beijing 102209, China)
出处
《智能电网》
2017年第1期69-74,共6页
Smart Grid
关键词
三相不平衡调节
优化算法
多目标优化
regulation of three-phase unbalance
optimization algorithm
multi-obj ective optimization
