重庆大学学报2016，Vol.39Issue(6)：58-70,13.DOI:10.11835/j.issn.1000-582X.2016.06.008
含旋转电机接口和逆变器接口的微网小信号稳定性分析
Small-signal stability analysis of a micro-grid with a synchronous generator and an inverter-interfaced micro source
摘要
Abstract
An independent microgrid control strategy including voltage source inverter (VSI)and synchronous generator(SG)was proposed,and its small signal stability was analyzed.Both VSI interfaces and SG interfaces used droop control strategy,sharing the load power without real-time communication.A small-signal micro-grid model was developed,including a small-signal model of the synchronous generator and its controller,a small-signal model of the inverter-interfaced micro source and its controller,and a small-signal model of the power network and its load.The eigenvalues were calculated when the droop gains change.The root locus of the principal eigenvalues were obtained when the main parameters change.And the participation factor of different state variables to the eigenvalues was investigated by PSCAD time domain simulations.The results show that the frequency stability is improved greatly by the synchronous generator when all micro sources use droop control.PSCAD time domain simulation verified the correctness of the eigenvalue calculation.关键词
微网/小信号模型/稳定性分析/逆变器接口/同步发电机/下垂控制Key words
micro-grid/small signal model/stability analysis/inverter-interfaced/synchronous generator/droop control分类
信息技术与安全科学引用本文复制引用
肖朝霞,赵玉珠,赵倩宇,贾双..含旋转电机接口和逆变器接口的微网小信号稳定性分析[J].重庆大学学报,2016,39(6):58-70,13.基金项目
国家自然科学基金资助项目（51107088）；天津市应用基础与前沿技术研究计划重点项目（15JCZDJC32100）；天津市科技支撑计划项目（15ZCZDGX00980）。Supported by the National Natural Science Foundation of China （51107088），Tianjin Research Program of Application Foundation and Advanced Technology（15JCZDJC32100）and The key technologies R ＆ D program of Tianjin（15ZCZDGX00980）． （）
