摘要
传统定值参数的虚拟同步发电机(VSG)控制策略在面对电网频率扰动和有功出力参考值扰动情况时,难以保持长期稳定运行。针对这个问题,本文提出了一种优化VSG多参数的自适应控制策略。该策略通过构建VSG数学模型及其自适应控制模型,采用指数型函数优化VSG的惯量和阻尼系数,并在此基础上引入双曲正弦(tanh)函数优化有功下垂系数控制,将其与角频率振荡过程进行综合考虑,实现了VSG多参数自适应优化控制。最后通过仿真分析与硬件在环仿真(HIL)实验证明本文所提策略能够提高对电网频率的支撑作用,增强系统稳定运行的能力。
The traditional fixed⁃parameter virtual synchronous generator(VSG)control strategy is difficult to main⁃tain when it comes to ensuring long⁃term stable operation in the face of grid frequency disturbance and active output reference value disturbance.This strategy facilitates the multi⁃parameter adaptive optimal control of VSG by con⁃structing a mathematical model of VSG and its adaptive control model.The exponential function is adopted to opti⁃mize the inertia and damping coefficients of VSG,and the tanh function is introduced to optimize the control of ac⁃tive sag coefficients.On the basis of these functions,and considering the process of angular frequency oscillation,the multi⁃parameter adaptive optimal control of VSG is realized.In conclusion,the simulation analysis and hard⁃ware in the Loop(HIL)experiment demonstrate the efficacy of the strategy proposed in this paper in enhancing the support of the grid frequency and ensuring the stable operation of the system.
作者
马劭宇
夏向阳
巩宇
赵晓悦
李贞容
罗贤良
MA Shaoyu;XIA Xiangyang;GONG Yu;ZHAO Xiaoyue;LI Zhenrong;LUO Xianliang(School of Electrical and Information Engineering,Changsha University of Science and Technology,Changsha 410114,China;State Grid Jibei Electric Co.,Ltd.,Beijing 100032,China)
出处
《电工电能新技术》
北大核心
2025年第11期85-96,共12页
Advanced Technology of Electrical Engineering and Energy
基金
国家自然科学基金项目(51977014)
湖南省自然科学基金项目(2025JJ50231)
湖南省教育厅重点科研项目(22A0230)。
关键词
虚拟惯量
阻尼系数
有功下垂系数
多参数自适应控制
协同控制
virtual inertia
damping coefficient
active droop coefficient
multi⁃parameter adaptive control
co⁃control
