电力系统自动化2018，Vol.42Issue(1)：23-31,9.DOI:10.7500/AEPS20170706008
含柔性软开关的有源配电网故障恢复策略
Service Restoration Strategy of Active Distribution Network with Soft Open Points
摘要
Abstract
With the development of smart distribution networks,the soft open point(SOP),as a sort of promising electronic device in place of traditional tie switch (TC),can improve the operating flexibility of a distribution network.This paper analyzes the SOP control modes of an active distribution network with SOPs under normal and fault conditions.For the special case that an arising serious fault prevents some regions from the contact with the grid through switches,each of the referred regions is called an unconnected subnetwork,the rest regions that can contact with the grid are called connected subnetworks. Then a service restoration strategy to restore the black-out loads by cooperating SOPs with distributed generators (DGs) is proposed.The power-transferring capability of the connected subnetwork is taken into account,which can provide the corresponding constraints for the restoration of the unconnected subnetwork.The SOP operates in a Vf mode during the service restoration.The objective function consists of the minimum weighted total loss of power load,the least DGs out of the grid and the minimum network loss.A service restoration model for the distribution network with SOPs is developed.The optimization variables are the output voltages of tie switch and SOP.Moreover,the ant colony optimization and chaos algorithm are combined to realize the restoration strategy.Finally,the case studies are conducted on a single IEEE 33-bus system with an SOP and a double IEEE 33-bus system,which show the effectiveness of the proposed service restoration strategy in both recovery schemes and load fluctuation adaptability.The simulation results show that the restoration strategy can not only realize the maximum restoration of the unconnected subnetwork,but also ensure the normal operation of the connected subnetwork.关键词
配电网/柔性软开关/故障恢复/分布式电源/蚁群算法/混沌算法Key words
distribution networks/soft open point (SOP)/service restoration/distributed generator (DG)/ant colony algorithm/chaos algorithm引用本文复制引用
娄铖伟,张筱慧,丛鹏伟,张博,唐巍,张璐..含柔性软开关的有源配电网故障恢复策略[J].电力系统自动化,2018,42(1):23-31,9.基金项目
国家自然科学基金资助项目(51377162).This work is supported by National Natural Science Foundation of China(No.51377162). （51377162）
