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
王辉 1王勇 1张晓滨 2严欢 1张艳3
作者信息
- 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
- 折叠
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.
Abstract
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of distributed generators(DG)in microgrids(MG),the traditional power flow calculation and optimization methods are no longer applicable.Based on the mathematical model of droop control,the traditional Newton Raphson method is modified.The droop control is improved by virtual impedance to relax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Key words
grid-forming distributed generator/microgrid/power flow calculation/optimized control引用本文复制引用
基金项目
国家电网陕西省电力公司科学技术项目(SGSNJY00GPJS2200015)
陕西省自然科学基础研究计划(2022JM-288)
出版年
2024
NETL
NSTL
万方数据