排灌机械工程学报2024，Vol.42Issue(8)：810-817,8.DOI:10.3969/j.issn.1674-8530.23.0281
改进VSG有功和无功双回路的协同反馈控制策略
Synergetic feedback control strategy of improving VSG active and reactive power dual loop
摘要
Abstract
In order to alleviate the power oscillation problem caused by the integration of renewable energy into the grid,an improved method for the control circuit of the virtual synchronous generator(VSG)was proposed.An analysis was conducted on the existing models,and detailed explanations were provided for the active and reactive power control loops.The synergetic control theory was intro-duced based on the traditional droop control,and a synergetic controller for the active and reactive parts was designed.The corresponding controller outputs were added to the two control loops in the form of negative feedback,completing the improvement of the original model.This method established parameter connections between active and reactive control loops through state variables in macro-varia-bles,achieving synergetic control of the two loops.Compared with the control results of the original model,the results show that adding a feedback loop can reduce the output power and frequency oscilla-tion of the virtual synchronous generator,proving the effectiveness of this strategy.Compared with single synergetic feedback control,the dual synergetic feedback control form can further reduce the output overshoot of the system in the case of a three-phase short-circuit fault,and the state variables can achieve stable control within 0.5 s.The analysis of the impact of synergetic control parameters pro-vides a reference for the selection of later parameters.关键词
虚拟同步发电机/控制回路/反馈环节/模型优化/协同控制Key words
virtual synchronous generator/control loop/feedback element/model optimization/synergetic control分类
信息技术与安全科学引用本文复制引用
王芳芳,曾云,钱晶..改进VSG有功和无功双回路的协同反馈控制策略[J].排灌机械工程学报,2024,42(8):810-817,8.基金项目
国家自然科学基金资助项目(52079059,52269020) （52079059,52269020）
