电力系统及其自动化学报2025，Vol.37Issue(10)：85-92,158,9.DOI:10.19635/j.cnki.csu-epsa.001507
含异构微源孤岛微电网功频振荡抑制VSG预同步控制策略
Power-frequency Oscillation Suppression and VSG Pre-synchronization Control Strategy for Islanded Microgrid with Heterogeneous Distributed Generators
刘澳 1张哲 1王卓1
作者信息
- 1. 河北工业大学电气工程学院,天津 300401
- 折叠
摘要
Abstract
A pre-synchronization control strategy is proposed to address the problem that the voltage needs to be syn-chronized before the grid-connection of a virtual synchronous generator(VSG)to an islanded microgrid with heteroge-neous distributed generators(HDG-MG)and the resulting power-frequency oscillations may arise.First,a control strat-egy based on improved virtual power is designed,under which the voltage information is collected from both sides of the grid-connection point to calculate the virtual power,and the grid-connection pre-synchronization process is realized without the need of phase-locked loop by controlling the virtual power to be zero,thus omitting the coordinate transfor-mation link and reducing the regulation time of voltage synchronization process.Second,aimed at the power-frequency oscillations of VSG in the process of grid-connection to the HDG-MG,the introduction of adaptive inertia and damping control can effectively suppress the degree of power-frequency oscillations in the grid-connection process,thereby real-izing a smooth VSG grid-connection.Finally,a simulation model is constructed on the MATLAB/Simulink platform,and the feasibility and advantage of the proposed method are verified through simulation tests.关键词
含异构微源孤岛微电网/虚拟同步发电机/预同步/虚拟功率/自适应惯量和阻尼控制Key words
islanded microgrid with heterogeneous distributed generators(HDG-MG)/virtual synchronous generator(VSG)/pre-synchronization/virtual power/adaptive inertia and damping control分类
动力与电气工程引用本文复制引用
刘澳,张哲,王卓..含异构微源孤岛微电网功频振荡抑制VSG预同步控制策略[J].电力系统及其自动化学报,2025,37(10):85-92,158,9.
