微电网无功补偿技术综述

Review of Reactive Power Compensation Technology in Microgrids

在基于可再生能源的分布式发电(Distributed Generation,DG)的微电网中,负载和发电设备相互靠近,以提供连续的电能。然而,与DG系统的电力电子接口导致了一些严重的电能质量问题,例如无功补偿和谐波。由于发电和配电紧密耦合,无功功率补偿在微电网中变得具有挑战性,难以维持可接受的电能质量水平,因此当前的研究旨在应对不断扩大的微电网系统并减轻相关问题。为此,对目前微电网无功补偿的各种控制方法、算法和设备进行总结回顾。

In a microgrid based on renewable energy sources,known as distributed generation(DG),loads and power generation devices are located in close proximity to provide continuous electrical power.However the power electronic interfaces of DG systems lead to some serious power quality issues,such as reactive power compensation and harmonics.Due to the tight coupling of power generation and distribution,reactive power compensation becomes challenging in microgrids,making it difficult to maintain an acceptable level of power quality.Therefore,current researches are aimed to address the expanding microgrid systems and alleviate these associated problems.This paper summarizes and reviews various control methods,algorithms,and devices for reactive power compensation in microgrids.