构网型变流器参与因子分析及参数优化  

Virtual Synchro Multi-machine System Participation Analysis and Parameter Optimization

作　　者：程爽 李强 李先允[1] 程煜 CHENG Shuang;LI Qiang;LI Xianyun;CHENG Yu(School of Electric Power Engineering,Nanjing Institute of Technology,Nanjing 211167,China;Electric Power Research Institute,State Grid Jiangsu Electric Power Co.,Ltd.,Nanjing 211103,China)

机构地区：[1]南京工程学院电力工程学院,江苏南京211167 [2]国网江苏省电力有限公司电力科学研究院,江苏南京211103

出　　处：《机械与电子》2024年第7期20-25,30,共7页Machinery & Electronics

基　　金：国网江苏电科院科技项目(SGTYHT/21-JS-223)。

摘　　要：针对虚拟同步机(VSG)多机并联系统动态特性分析困难、参数优化复杂等问题,提出了一种VSG多机并联系统稳定性分析和参数优化方法。该方法基于VSG状态空间模型,采用特征根轨迹、参与因子和时域仿真相结合的方式,分析特征根的变化情况及影响因素,给出VSG系统的稳定裕度,进而对需要改进的参数取不同值,并选择频率动态响应最佳的值作为优化后的参数值,最后通过dSPACE进行半实物仿真验证,进一步验证了该方法的优越性。Virtual synchronous generator(VSG)as an emerging converter control method,for the VSG multi-machine parallel system dynamic characteristic analysis is difficult and parameter optimization is complicated,a VSG multi-machine parallel system stability analysis and parameter optimization method is proposed.The method is based on the VSG state space model,and adopts the combination of characteristic root trajectory,participation factor and time-domain simulation to analyze the variation of characteristic root and its influencing factors,to give the stability margin of the VSG system,and then take different values for the parameters that need to be improved,and select the best value of frequency dynamic response as the optimized parameter value,and finally verify the method by semi-physical simulation through dSPACE to further verify the superiority of the method.

关 键 词：虚拟同步机 多机并联 参与因子 参数优化 

分 类 号：TM464[电气工程—电器]