基于分布式电源的微电网建模与仿真

摘要

Micro-grid can achieve the flexible access of the distributed power and power system by kneading mul-tiple distributed generation unit. In order to study the operating characteristics of micro-grid deeply, it is necessary to construct the simulation model of micro-grid. In this paper, based on the PSCAD/EMTDA simulation environment, each link of mathematical formula was derived to design the control strategy of each unit and to establish the simula-tion model of wind power, photovoltaic array and energy storage system. The accomplished model of each power source was used to construct the simulation platform of a typical micro-grid. The simulation results show that in the variation of the wind speed and the light intensity, each part of the control strategy can complete its control objectives very well and make the micro-grid operate normally.%在建立可靠电网供电系统问题的研究中，微电网通过揉合多种分布式发电单元，能够实现分布式电源与电力系统的灵活接入。根据微电网的运行特性，构建微电网的仿真模型，利用PSCAD/EMTDC仿真环境，在推导出各个环节数学模型的基础上，设计了每一部分的控制策略并建立了风力发电，光伏系统，储能系统的仿真模型，用已经构建的各个微电源模型搭建了典型微电网的仿真平台，并进行了仿真。仿真结果表明，在风速和光照强度的变化下各部分的控制策略能够很好地完成其控制目标，使微电网正常运行。