中国电机工程学报2017，Vol.37Issue(7)：1918-1926,9.DOI:10.13334/j.0258-8013.pcsee.160205
基于超前滞后环节虚拟惯性的VSG控制策略
Virtual Synchronous Generator Control Strategy Based on Lead-lag Link Virtual Inertia
摘要
Abstract
When the existing virtual synchronous generator (VSG) based on first-order link virtual inertia is connected to utility grid and controlled as PQ mode, contradictions exist between the VSG output power adjustment of steady-state and dynamic characteristics, that is, the power overshoot reduction may cause the slow power response and increased steady-state error. To solve this problem, the VSG control strategy based on lead-lag link virtual inertia was proposed, in this strategy, a lead link was added to the original first-order link to form a lead-lag link virtual inertia. By adjusting the lead link coefficient, the zero and pole position of active power close loop transfer function can be designed, thus steady-state accuracy of power control is ensured, while the response speed of VSG power is sped up, the system damping is increased, thus power impact on the energy storage unit of VSG during dynamic process is reduced. Simulation and experiments validate the effectiveness of the proposed strategy.关键词
虚拟同步电机/虚拟惯性/微网/PQ控制/超前滞后环节Key words
virtual synchronous generator/virtual inertia/microgrid/PQ control/lead-lag link分类
信息技术与安全科学引用本文复制引用
徐海珍,张兴,刘芳,毛福斌,石荣亮,余畅舟,余勇..基于超前滞后环节虚拟惯性的VSG控制策略[J].中国电机工程学报,2017,37(7):1918-1926,9.基金项目
国家863高技术基金项目(2015AA050607). The National High Technology Research and Development of China 863 Program (2015AA050607). （2015AA050607）
