中国电机工程学报2017，Vol.37Issue(22)：6500-6515,16.DOI:10.13334/j.0258-8013.pcsee.171912
变流器并网系统振荡与原-对偶复电路分析
Primal-dual Complex Circuit of Grid-connected Converters for Oscillation Analysis
摘要
Abstract
Generalized-impedance method transforms the oscillation analysis of grid-connected converter system (GCS)into the resonance between the generalized-impedances of converter and grid,without ignoring coupling terms.To reveal the oscillation mechanism and physical meaning of the generalized-impedances,a primal-dual complex circuit representing the GCS was proposed.Firstly,this paper illustrated that generalized-impedances can be obtained either by the system impedance matrixes or by the Jacobian transfer matrix.Secondly,the concepts of primal-dual component were put forward such that the coupled-frequency oscillation components can be described exactly.Finally,the primal-dual complex circuit,which contains the coupling of the primal complex circuit and the dual complex circuit,was proposed for analyzing small signal stability analysis of the GCS.It is shown that the small-signal instability of the GCS is equivalent to the resonance of the primal-dual circuit.The simulation demonstrates the rationality and effectiveness of the proposed primal-dual complex circuit.关键词
复电路/变流器并网系统/广义阻抗/原-对偶分量Key words
complex circuit/grid-connected converters system (GCS)/generalized-impedance/primal-dual component分类
信息技术与安全科学引用本文复制引用
董炜,辛焕海,李子恒,甘德强,袁小明,黄伟,王康..变流器并网系统振荡与原-对偶复电路分析[J].中国电机工程学报,2017,37(22):6500-6515,16.基金项目
国家重点研发计划项目(2017YFB0902000) （2017YFB0902000）
国家自然科学基金项目(51577168) （51577168）
云南电网科技项目资助((2016)000303DD00124).National Key Research and Development Program of China (2017YFB0902000) （(2016）
Project Supported by National Natural Science Foundation of China (51177168) （51177168）
Yunnan Electric Power Company ((2016)000303DD00124). （(2016）
