智能软开关选址定容模型及其求解算法  

SNOP locating and sizing model and optimization algorithm

作　　者：张利 杨洁 仉志华[3] 曲泽奇 ZHANG Li;YANG Jie;ZHANG Zhi-hua;QU Ze-qi(Shengli Oil-Field Electric Power Branch,Dongying 257087,China;Weihai Power Supply Company of the State Grid Corporation of China,Weihai 264200,China;New Energy College of China University of Petroleum,Qingdao 266580,China;Hangzhou Power Supply Company of the State Grid Corporation of China,Hangzhou 310020,China)

机构地区：[1]胜利油田电力分公司,山东东营257087 [2]国网山东省电力公司威海供电公司,山东威海264200 [3]中国石油大学(华东)新能源学院,山东青岛266580 [4]国网浙江省电力有限公司杭州供电公司,浙江杭州310020

出　　处：《电工电能新技术》2021年第11期9-19,共11页Advanced Technology of Electrical Engineering and Energy

基　　金：国家自然科学基金(51977220)、山东省自然科学基金(ZR2019MEE057)、中央高校基本科研业务费专项资金资助项目(18CX05025A)。

摘　　要：基于现代电力电子技术的智能软开关能够实现同区甚至异区馈线互联,进而通过闭环运行提高供电可靠性及分布式电源接纳能力。智能软开关选址与定容策略是决定其潮流调节能力及应用经济性的关键因素。文中提出了一种基于有功潮流灵敏度的智能软开关选址策略;在此基础上,考虑投资和运行成本,建立了确定智能软开关容量的双层规划模型,上层以年综合费用最小为目标函数,下层以系统网络损耗、节点电压偏差以及智能软开关内部损耗综合最优为目标;采用改进的差分进化与二阶锥规划混合算法求解智能软开关优化定容模型。最后基于改进的33节点算例,仿真验证了文中提出的选址与定容策略及其优化求解方法的有效性。Soft Normally Open Points(SNOP)based on modern power electronics technology can realize the interconnection of feeders in the same area or even different areas,and then improve the reliability of power supply and the capacity of distributed power through closed loop operation.The locating and sizing strategy of SNOP is the key factors that determine its power flow adjustment ability and application economy.This paper proposes a strategy for the locating of SNOP based on active power flow sensitivity.Then,considering the investment and operating costs,a two-stage framework for the sizing of SNOP is presented,where the objective is to minimize the annual expense in the upper stage,and the objective is to minimize the sum of network loss,node voltage deviation,and SNOP internal loss in the lower stage.Then an improved differential evolution algorithm(DE)and a second-order cone programming(SOCP)hybrid algorithm are used to solve this problem.Finally,case studies on improved 33-node system verify the effectiveness of the proposed model for locating and sizing of SNOP and the hybrid optimization algorithm.

关 键 词：智能软开关 有功潮流灵敏度 选址定容 差分进化算法 

分 类 号：TM7[电气工程—电力系统及自动化]