基于ADMM算法的中低压配电网多目标分布式协调优化运行策略  

Multi-Objective Distributed Optimal Scheduling of Distribution Network with High-Permeability Distributed Photovoltaic Resource Access

作　　者：刘辉[1] 杨坤[2] 王枭枭 王基吁 邵尹池 刘佳林 朱星旭[2] 李翠萍[2] 李军徽 LIU Hui;YANG Kun;WANG Xiaoxiao;WANG Jiyu;SHAO Yinchi;LIU Jialin;ZHU Xingxu;LI Cuiping;LI Junhui(North China Electric Power Research Institution Co.,Ltd.,Beijing 100045,China;Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology,Ministry of Education(Northeast Electric Power University),Jilin 132012,Jilin Province,China)

机构地区：[1]华北电力科学研究院有限责任公司,北京市100045 [2]现代电力系统仿真控制与绿色电能新技术教育部重点实验室(东北电力大学),吉林省吉林市132012

出　　处：《电力建设》2024年第9期100-112,共13页Electric Power Construction

基　　金：国家自然科学基金重点项目(52337004);华北电科院自有资金科技项目“面向整县光伏推进的分布式储能优化配置及运行控制技术研究”(KJZ2022049)。

摘　　要：低压用户侧大量分布式光伏和储能接入有利于可再生能源发电就地消纳,然而,低压用户与中压配电网分属不同利益主体,其相互之间的运行优化指标往往存在冲突。为此,提出一种高渗透率分布式光伏和储能接入的中低压配电网多目标分布式协调优化运行策略,考虑中低压配电网潮流约束,分别以配电网总成本及多台区负载率差异最小、低压配电网储能运行成本最小和光伏消纳率最大为目标,构建中、低压配电网优化模型,并采用熵权法对中低压配电网优化目标进行加权,建立中低压配电网协调优化模型;基于交替方向乘子法(alternating direction method of multipliers, ADMM),推导了求解协调优化模型的中、低压配电网迭代优化目标函数形式,设计了中、低压配电网协调优化策略,中压配电网通过影子价格迭代不断引导低压配电网用户调整分布式电源出力,仅通过少量边界信息交换实现中低压配电网多目标协调优化运行。最后,选取IEEE 33-7节点标准算例系统进行测试,证明了所提中低压配电网多目标分布式优化运行策略的有效性及可行性。The access to substantial distributed photovoltaic and energy storage resources on the low-voltage user side is conducive to the local consumption of renewable energy power generation.However,low-voltage users and medium-voltage distribution networks are different stakeholders,and their operation optimization indicators often conflict with each other.Therefore,a multi-objective distributed coordinated optimization operation strategy for medium-and low-voltage distribution networks with high-permeability distributed photovoltaic and energy storage resource access is proposed.Considering the power flow constraints of the medium-and low-voltage distribution networks,an optimization model of the medium-and low-voltage distribution networks is established with the objectives of minimizing the total cost of the distribution network,load rate difference among multiple stations,and energy storage operation cost of the low-voltage distribution network and maximizing the photovoltaic absorption rate.The optimization objectives of the medium-and low-voltage distribution networks are weighted by the entropy weight method.Based on the alternating direction method of multipliers(ADMM),the objective function form of iterative optimization for medium-and low-voltage distribution networks is derived to solve the coordinated optimization model,and a coordinated optimization strategy for medium-and low-voltage distribution networks is designed.The medium-voltage distribution network continuously guides the users of low-voltage distribution networks to adjust the output of distributed power sources through shadow price iterations and realizes the multi-objective coordinated optimization operation of medium-and low-voltage distribution networks through a minimal exchange of boundary information.Finally,the effectiveness and feasibility of the proposed multi-objective distributed optimization operation strategy for medium-and low-voltage distribution networks is verified using the IEEE 33-7 node standard example system.

关 键 词：中低压配电网 交替方向乘子法(ADMM) 分布式优化 多目标加权 

分 类 号：TM734[电气工程—电力系统及自动化]