基于有功-相角下垂控制的分布式电源逆变器并网控制方法  

Grid-connected Control of Distributed Generation Inverter Based on Angle Droop Control

作　　者：吴翔宇 韦楚钒 王思家 许寅 魏新迟 WU Xiangyu;WEI Chufan;WANG Sijia;XU Yin;WEI Xinchi(School of Electrical Engineering,Beijing Jiaotong University,Haidian District,Beijing 100044,China;State Grid Shanghai Electric Power Research Institute,Hongkou District,Shanghai 200437,China)

机构地区：[1]北京交通大学电气工程学院,北京市海淀区100044 [2]国网上海市电力公司电力科学研究院,上海市虹口区200437

出　　处：《电网技术》2024年第5期2113-2121,I0085,I0087-I0094,共18页Power System Technology

基　　金：国家重点研发计划项目(2022YFB2405500)。

摘　　要：有功-频率下垂控制是微电网离网运行时的常用控制方法,然而存在频率偏差等问题。基于同步定频的有功-相角下垂控制具有众多优势,但尚未研究有功-相角下垂控制如何在并网工况下使用的问题。针对微电网场景,提出了基于有功-相角下垂控制的分布式电源逆变器并网控制方法,设计了比例控制和比例积分控制2种控制器,用以补偿同步相位。此外,还提出了有功-相角下垂控制下微电网并网转离网的切换控制方法。再者,建立了所提并网控制方法下微电网的小信号动态模型,通过粒子群算法优化了并网控制参数。最后,通过基于Simulink平台的时域仿真和RT-Lab半实物平台的硬件在环实验验证了所提方法的有效性。Frequency droop control is a common control method for the microgrid off-grid operation,but there are problems such as frequency deviation.The angle droop control based on the fixed frequency has many advantages,but how to use it under the grid-connected conditions has scarcely been studied.This paper proposes a grid-connected control method for distributed generation inverters based on the angle droop control for microgrid operation.Two controllers,the proportional controller and the proportional integral controller,are designed to compensate for the synchronous phase.In addition,a switching method of the microgrid grid-connected control to the off-grid control under the angle droop control is proposed.Furthermore,the small signal dynamic model of the microgrid under the proposed grid-connected control is established,and the grid-connected control parameters are optimized by the particle swarm optimization.Finally,the effectiveness of the proposed method is verified by the time domain simulation based on the Simulink platform and the hardware-in-the-loop experiment based on the RT-Lab semi-physical platform.

关 键 词：微电网 分布式电源 下垂控制 有功-相角 参数优化 

分 类 号：TM721[电气工程—电力系统及自动化]