基于解析灵敏度的不平衡配电系统分布式发电出力优化  

Optimization of Distributed Generation Output in Unbalanced Distribution System Based on Analytical Sensitivity

作　　者：屈尹鹏 孙元章[1] 徐箭[1] 柯德平[1] QU Yinpeng;SUN Yuanzhang;XU Jian;KE Deping(School of Electrical Engineering and Automation,Wuhan University,Wuhan 430072,China)

机构地区：[1]武汉大学电气与自动化学院,湖北省武汉市430072

出　　处：《电力系统自动化》2021年第19期117-125,共9页Automation of Electric Power Systems

基　　金：国家重点研发计划资助项目(2017YFB0902900);国家自然科学基金资助项目(U2066601)。

摘　　要：分布式能源的渗透率不断提升,使得主动配电系统的不平衡性远远高于传统配电网。文中研究了以网损最小化和分布式发电(DG)出力最大化为目标函数的不平衡配电系统DG出力优化模型。首先,基于不动点定理的不平衡线性潮流模型,推导了以电压为决策变量的网损对于DG出力的灵敏度解析表达式,将其引入不平衡配电系统DG出力的一般单目标优化数学模型。然后,提出了考虑DG出力最大化的多目标优化模型并给出了比例系数的调制方式。最后,通过算例仿真验证了所提方法的有效性。The increasing penetration of distributed energy sources makes the imbalance of the active distribution system much higher than that of the traditional distribution network.This paper investigates an optimization model for distributed generation(DG)output of the unbalanced distribution system with the minimization of network loss and the maximization of DG output as the objective functions.First,an analytical expression for the sensitivity of network loss to DG output with voltage as the decision variable is derived based on the unbalanced linear tidal model of the immovable point theorem,which is introduced into the general single-objective optimization mathematical model of DG output in the unbalanced distribution systems.Then,a multi-objective optimization model considering the maximization of DG output is proposed and the modulation of the scaling factor is given.Finally,the effectiveness of the proposed method is verified by the simulation of arithmetic cases.

关 键 词：主动配电系统 分布式发电出力优化 解析灵敏度 不平衡系统 多目标优化 

分 类 号：TM73[电气工程—电力系统及自动化]