构网型分布式电源渗透率高的微电网潮流计算及优化控制  

Power Flow Calculation and Optimization Control of the Microgrid with High Penetration of Grid-Forming Distributed Generators

作　　者：王辉 王勇 张晓滨[2] 严欢 张艳 WANG Hui;WANG Yong;ZHANG Xiaobin;YAN Huan;ZHANG Yan(Economic&Technical Research Institute,State Grid Shaanxi Electric Power Company Limited,Xi’an 710065,Shaanxi,China;School of Electrical Engineering,Xi’an University of Technology,Xi’an 710048,Shaanxi,China;State Grid Yulin Electric Power Supply Company,Yulin 719000,Shaanxi,China)

机构地区：[1]国网陕西省电力有限公司经济技术研究院,陕西西安710065 [2]西安理工大学,陕西西安710048 [3]国网陕西省电力有限公司榆林供电公司,陕西榆林719000

出　　处：《电网与清洁能源》2024年第4期35-43,共9页Power System and Clean Energy

基　　金：国网陕西省电力有限公司科学技术项目(SGSNJY00GPJS2200015);陕西省自然科学基础研究计划资助项目(2022JM-288)。

摘　　要：随着微电网(microgrid,MG)中构网型分布式电源(distributed generator,DG)渗透率的提高,传统的潮流计算和优化方法不再适用。基于下垂控制的数学模型,改进传统牛顿拉夫逊法;应用虚拟阻抗松弛DG的无功与电压约束,改进下垂控制;应用改进粒子群优化算法,得到使网损最小的MG优化潮流;通过仿真和实验,验证了该方法的有效性。该文有助于指导构网型DG渗透率高的末端电网或MG的规划与控制。With increase of the penetration of distributed generators(DG)in microgrids(MG),the traditional power flow calculation and optimization methods are no longer applicable.Based on the mathematical model of droop control,the traditional Newton Raphson method is modified.The droop control is improved by virtual impedance to relax the constraints of DG reactive power voltage.In addition,the improved particle swarm optimization algorithm is applied to obtain the MG optimization power flow with the minimum network loss.Finally,the method is verified by simulation and experiment.This paper is helpful to guide the planning and control of terminal power grids or MG with high penetration of grid-forming DGs.

关 键 词：构网型分布式电源 微电网 潮流计算 优化控制 

分 类 号：TM744[电气工程—电力系统及自动化]