基于改进型直流潮流算法的主动配电网分布式电源规划模型及其线性化方法  

Distributed Generation Planning Model of Active Distribution Network and Linearization Method Based on Improved DC Power Flow Algorithm

作　　者：范志成 朱俊澎 袁越[1] 吴涵[1] FAN Zhicheng;ZHU Junpeng;YUAN Yue;WU Han(College of Energy and Electrical Engineering,Hohai University,Nanjing 211100,Jiangsu Province,China)

机构地区：[1]河海大学能源与电气学院,江苏省南京市211100

出　　处：《电网技术》2019年第2期504-513,共10页Power System Technology

基　　金：国家重点研发计划项目(2016YFB0900100)~~

摘　　要：以分布式电源(distributed generation,DG)运营商净收益最大为优化目标,建立多场景多时段耦合的主动配电网分布式电源规划模型。首先针对传统分布式电源规划求解方法的不足,提出一种计及电压和无功功率的改进型直流潮流模型,实现支路潮流方程中电压幅值与相角的解耦,并基于此建立了考虑储能系统和多种主动管理(activemanagement,AM)措施协调优化的分布式电源规划模型。其次,在保证模型精度和系统运行物理意义的前提下,引入网损因子法、圆形约束线性化法、McCormick凸包络线法、辅助变量等方法,将原始模型转换为混合整数线性优化模型。最后,提出了一种基于热启动(warm start)的迭代求解流程以保证模型精度。以江苏省某市经济开发区的15节点系统为测试算例,调用GAMS-MOSEK求解器对规划模型进行求解,验证了模型及算法的有效性。Aiming for maximizing net profit of system operator, a distributed generation planning model of active distribution network is established in multiple scenes. In view of the shortcomings of traditional methods, an improved DC power flow model considering voltage and reactive power is proposed to realize decoupling of voltage amplitude and phase angle in branch flow equations and, based on this model, a planning model is built, considering energy storage system and some active management measures. Then, on premise of ensuring accuracy and physical meaning of the system, linearization of the model is realized by means of network loss factor method, circular constraint linearization, McCormick convex envelope method and auxiliary variable method, transforming the original model into a mixed integer linear optimization model. Finally, an iterative solution process based on warm start is proposed to ensure accuracy of the model. Taking a 15-node system of an economic development zone in Jiangsu Province as a study case, the GAMS-MOSEK solver is called to solve the problem, verifying validity of the model and algorithm.

关 键 词：分布式电源规划 改进型直流潮流 模型线性化 主动管理 储能系统 

分 类 号：TM721[电气工程—电力系统及自动化]