混合输配电系统的分布式随机优化规划  

A Distributed Stochastic Optimization Method for Planning Transmission and Distribution Systems

作　　者：刘佳[1] 程浩忠[1] 姚良忠[2] 张建平 张啸虎 Liu Jia;Cheng Haozhong;Yao Liangzhong;Zhang Jianping;Zhang Xiaohu(Key Laboratory of Control of Power Transmission and Conversion Ministry of Education Shanghai Jiao Tong University Shanghai 200240 China;China Electric Power Research Institute Beijing 100192 China;State Grid Company East China Division Shanghai 200120 China)

机构地区：[1]上海交通大学电力传输与功率变换控制教育部重点实验室,上海200240 [2]中国电力科学研究院,北京100192 [3]国家电网公司华东分部,上海200120

出　　处：《电工技术学报》2019年第10期1987-1998,共12页Transactions of China Electrotechnical Society

基　　金：国家重点研发计划(2016YFB0900102);国家自然科学基金重点项目(51337005)资助

摘　　要：高比例可再生能源渗透是未来电力系统一大重要特征,其使得输配电系统间的电力电量流灵活双向、物理耦合性增强。提出一种输配电系统的分布式随机协调优化规划方法。考虑可再生能源出力和负荷波动不确定性,利用分解优化建模理论,在满足输配电系统间交互信息一致性的前提下,将输配电系统联合优化规划问题分解为一个输电系统规划子问题和一系列配电系统规划子问题。对于配电系统规划子问题,基于配电系统潮流方程和约束松弛技术,构建配电系统规划的二阶锥规划模型。采用双层循环迭代的分布式优化算法对所建模型加以求解。分别从输、配电系统层面,通过算例对比是否考虑输配电联合下的系统规划方案验证了所提方法的有效性。The high penetration of renewable energy sources is a main feature of future power systems, which causes the flexible bi-directional power and energy flows, and improves the coupled properties of physical connection between transmission and distribution systems. This paper presented a distributed stochastic optimal planning method for hybrid transmission and distribution systems. With the consideration of uncertainties related to renewable energy sources and load injection, the coordinated transmission and distribution optimal planning problem was decomposed into a transmission planning subproblem and a series of distribution planning subproblems using distributed optimization modelling methodology under the premise of the consistency of shared information between transmission and distribution systems. For distribution planning subproblem, the second-order cone programming model for distribution systems was formulated based on distflow equations and constraint relaxation. The proposed model was handled using the distributed optimization algorithm with bi-level loop iteration. Respectively from the perspectives of transmission and distribution level, simulation results demonstrate the effectiveness of the proposed method comparing the solutions of coordinated planning and independent planning.

关 键 词：输配电系统 优化规划 分布式优化 随机规划 二阶锥松弛 

分 类 号：TM715[电气工程—电力系统及自动化]