多微源独立微网中虚拟同步发电机的改进型转动惯量自适应控制

发布时间：2018-01-06 10:28

本文关键词：多微源独立微网中虚拟同步发电机的改进型转动惯量自适应控制　出处：《中国电机工程学报》2017年02期 　论文类型：期刊论文

【摘要】：多微源独立微网中,传统下垂控制的输出频率动态响应速度快,虚拟同步发电机(virtual synchronous generator,VSG)控制可改善频率响应特性,但无法兼顾功率和频率的动态调节性能。针对此问题,提出一种改进的转动惯量自适应控制(improved adaptive control of inertia,IACI)。首先,在同步旋转坐标系下建立VSG数学模型,并分析转动惯量对VSG输出特性的影响;其次,在VSG控制的基础上通过在转动惯量控制中引入频率变化量形成VSG转动惯量自适应控制,并给出频率跟踪系数、转动惯量和阻尼系数等参量的整定方法;最后利用Matlab/Simulink对比VSG控制和IACI控制在VSG并入微网和负载扰动条件下的有功和频率响应曲线,在由两台1k W的VSG组成的独立微网实验平台上进行实验验证,结果表明所提控制策略可避免VSG并入微网过程中的有功振荡,且可以有效优化频率响应曲线。
[Abstract]:Multiple micro sources independent micro grid, the traditional droop control dynamic frequency output response speed, virtual synchronous generator (virtual synchronous, generator, VSG) control can improve the frequency response, but can not take into account the dynamic power and frequency regulation performance. To solve this problem, proposed an improved inertia adaptive control (improved adaptive control of inertia, IACI). First of all, to establish VSG mathematical model in synchronous rotating coordinate system, and analyze the inertia effect on VSG output characteristics; secondly, on the basis of VSG control by introducing the frequency change in the rotational inertia control in formation of VSG inertia adaptive control, and gives the frequency tracking coefficient setting method of moment of inertia and damping coefficient; finally the use of Matlab/Simulink compared with VSG control and IACI control of micro grid and load disturbance conditions of active power and frequency are incorporated in the VSG The response curve is verified by experiments on an independent microgrid platform consisting of two 1K W VSG. The results show that the proposed control strategy can avoid active oscillation in the process of VSG incorporation into microgrid, and can effectively optimize the frequency response curve.

【作者单位】：西安理工大学自动化与信息工程学院;电力系统及发电设备安全控制和仿真国家重点实验室(清华大学);
【分类号】：TM71
【正文快照】： Science Foundation(51277150/51307140);Key Science and TechnologyProgram of Shaanxi Province(2013K07 05);Industrialization CultivationProject of Shaanxi Education Department(14JF020);Open-end Fund ofState Key Laboratory of Alternate Electrical Power Syst

【相似文献】