摘要
提出一种计及分布式电源并网安全约束的配电网改接优化模型。首先,对分布式电源并网后改善区域型负荷平衡和确保上级电源事故备用不超限问题进行了分析,将分布式电源的返送电流和上级电源备用容量统称为分布式电源并网安全约束。在此基础上,提出了区域电源总变电容量和10 kV馈线网络结构这两项配电网改接方案评价指标。随后建立了计及分布式电源并网安全约束的10 kV配电网改接优化模型,并且对10 kV馈线网结构指标不合格、区域电源总变电容量指标合格的配电网,采用免疫遗传算法对所建模型进行求解。最后,通过对某片区实际10 kV配电网改接优化问题的仿真分析,验证了所提方法的有效性。
This paper proposes an optimization model for restructuring distribution network in consideration of grid-connected security constraints of DGs.First,the problems of improving regional load balance and ensuring emergency reserve of the upper-level power supply not exceeded after distributed generation connection are analyzed,and the distributed generations’return current and the upper-level power reserve capacity are collectively called distributed generation grid-connected safety constraints.And then,two evaluation indexes of regional power total substation capacity and 10 kV feeders’network structure are proposed.Subsequently,this paper proposes an optimization model for restructuring 10 kV distribution network in considering grid-connected security constraints of DGs.Immune genetic algorithm is used to solve the model that regional power total substation capacity is qualified but 10 kV feeders’network structure is not.Finally,the effectiveness of the proposed method is verified by simulation analysis of a practical 10 kV distribution network’s restructuring and optimization problem.
作者
王波
虞殷树
贺旭
王晴
周念成
吴佳芳
WANG Bo;YU Yinshu;HE Xu;WANG Qing;ZHOU Niancheng;WU Jiafang(Ningbo Power Supply Company,State Grid Zhejiang Electric Power Co.,Ltd.,Ningbo 315000,China;State Key Laboratory of Power Transmission Equipment&System Security and New Technology(Chongqing University),Chongqing 400044,China)
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2019年第22期67-77,共11页
Power System Protection and Control
基金
国家自然科学基金项目资助(51577018)~~
关键词
分布式电源
配电网络改接
并网安全约束
免疫遗传算法
distributed power sources
restructuring distribution network
grid-connected security constraints
immune genetic algorithm
作者简介
王波(1985—),男,硕士,研究方向为电力系统及其自动化,E-mail:247622018@qq.com;虞殷树(1987—),男,学士,研究方向为电力系统及其自动化,E-mail:393577460@qq.com;贺旭(1989—),男,硕士,研究方向为电力系统及其自动化。E-mail:810492523@qq.com。
