配电网合解环全过程综合优化调控  

Integrated optimal control strategy of loop-closing and loop-opening operation in distribution network

作　　者：杨志芳 李俊伟 何静 王勇 万子恒 彭芙 黄纯[2] YANG Zhifang;LI Junwei;HE Jing;WANG Yong;WAN Ziheng;PENG Fu;HUANG Chun(Kunming Power Supply Bureau,Yunnan Power Grid Co.,Ltd.,Kunming 650011,China;Colleage of Electrical and Information Engineering,Hunan University,Changsha 410082,China)

机构地区：[1]云南电网有限责任公司昆明供电局,云南昆明650011 [2]湖南大学电气与信息工程学院,湖南长沙410082

出　　处：《电力科学与技术学报》2022年第6期73-81,共9页Journal of Electric Power Science And Technology

基　　金：云南电网有限责任公司科技项目(YNKJXM20190028)。

摘　　要：配电网合解环操作能实现不停电转供电,提高供电可靠性。为了保障合环操作的安全性和解环后配电网运行的经济性及电能质量,提出统筹考虑合环、解环全过程的优化调控模型及算法。首先,以无功补偿电容器、变压器分接头以及功率可控的分布式电源为调控手段,以合环前和解环后调控的设备动作总次数最少、合环时环网馈线段的最大负载率最小及解环后网损及电压偏差最小为调控目标,建立合解环综合优化调控数学模型;然后,利用配变的历史负荷推算配电网负荷功率,提高合解环潮流计算的准确性;最后,采用多目标粒子群算法对调控优化模型求解,获得合解环的Pareto最优调控方案集。根据配电网在不同场景下的合解环仿真结果验证所提调控方法的有效性。The loop-opening and loop-closing operation can avoid outage when switching power supply,thereby improving the reliability of distribution network.In order to ensure the safety of loop-closing operation as well as the economy and power quality after loop-opening,an optimal control strategy is proposed by considering the whole process of loop-closing and loop-opening operation in this paper.Compensation capacitors,transformer taps and distributed generation are utilized as control means.Meanwhile,the control target is set to minimize the times of device regulation before loop-closing and after loop-opening,the maximum load rate during loop-closing,the network loss and voltage deviation after loop-opening.Secondly,the historical load of distribution transformer is adopted to calculate the load power of distribution network,which improves the accuracy and real-time of power flow calculation.In addition,the multi-objective particle swarm optimization algorithm is applied to obtain the Pareto optimal set of control schemes.Finally,a practical example in different scenarios are included to verify the effectiveness of the proposed control strategy.

关 键 词：配电网 合解环 多目标优化 粒子群算法 分布式电源 

分 类 号：TM743[电气工程—电力系统及自动化]