基于自适应无功功率补偿的虚拟同步机功率解耦策略  

Power Decoupling Strategy in Virtual Synchronous Generator Based on Adaptive Reactive Power Compensation

作　　者：姜静雅 王玮[1] 吴学智[1] 唐芬[1] 李金科 Jiang Jingya;Wang Wei;Wu Xuezhi;Tang Fen;Li Jinke(National Active Distribution Network Technology Research Center Beijing Jiaotong University,Beijing 100044 China;China Energy Engineering Group Jiangsu Power Design Institute Co.Ltd,Nanjing 211102 China)

机构地区：[1]国家能源主动配电网技术研发中心(北京交通大学),北京100044 [2]中国能源建设集团江苏省电力设计院有限公司,南京211102

出　　处：《电工技术学报》2020年第13期2747-2756,共10页Transactions of China Electrotechnical Society

基　　金：中国博士后科学基金资助项目(2019M652028)。

摘　　要：针对虚拟同步机(VSG)的输出功率在中低压线路传输过程中存在耦合而引起功率控制产生稳态误差的问题,在对功率耦合机理分析的基础上,提出一种基于自适应无功功率补偿的虚拟同步机功率解耦策略。文中重构了有功功率控制环路和无功功率控制环路,在用d、q轴电流表征VSG功角和内电动势的基础上,提出仅用d轴电流表征功率耦合问题,进而从抑制电流稳态变化的角度提出了基于自适应无功功率补偿的解耦策略。最后通过仿真和实验验证了所提解耦策略的有效性。The virtual synchronous generator(VSG)may produce output power error due to the power coupling.To tackle this issue,a novel power decoupling strategy based on the adaptive reactive power compensation was proposed.The active-power loop and reactive-power loop were reconstructed in this paper.It is proposed that the power angle and inner electric potential of VSG could be characterized by the output current and the coupling problem could be characterized only by the d axis current.Furthermore,the decoupling strategy based on the reactive power compensation is proposed from the respective of suppressing the current error.Finally,the effectiveness of the strategy was verified by simulation and experiment results.

关 键 词：虚拟同步机 功率解耦 d轴电流 自适应无功功率补偿 

分 类 号：TM464[电气工程—电器]