中国电机工程学报2017，Vol.37Issue(19)：5572-5582,11.DOI:10.13334/j.0258-8013.pcsee.161579
含恒功率负载的交直流混联配电系统稳定性分析
Stability Analysis of AC/DC Hybrid Distribution System With Constant Power Loads
摘要
Abstract
The stability analysis method of AC/DC hybrid distribution system is the key technology to evaluate whether the system can operate safely and stably.Traditional stability analysis methods are usually based on the DC cascade system and DC microgrid as the research object,and the stability analysis and evaluation of AC/DC hybrid distribution systems with constant power loads are rarely involved.Based on this problem,the stability analysis method based on impedance matching was proposed for AC/DC hybrid distribution system,state space small signal model of flexible interlinking device,photovoltaic power generation unit,constant power load and n line were established.Thevenin equivalent circuits of AC/DC hybrid distribution system were established when the master-slave control and droop control were used for multi-terminal flexible interlinking device.The negative impedance stability boundary was determined by the Nyquist stability criterion,and the detailed physical model was built by the Simulink simulation tools.Finally,the feasibility of the proposed stability analysis method was verified by comparison analysis of simulation results and the Nyquist curves.关键词
交直流混联配电系统/恒功率负载/小信号模型/稳定性分析/柔性互联装置Key words
AC/DC hybrid distribution system/constant power load/small signal model/stability analysis/flexible interlinking device分类
信息技术与安全科学引用本文复制引用
张学,裴玮,邓卫,于汀,范士雄,黄仁乐..含恒功率负载的交直流混联配电系统稳定性分析[J].中国电机工程学报,2017,37(19):5572-5582,11.基金项目
国家863高技术基金项目(2015AA050102) （2015AA050102）
国家自然科学基金项目(51407177) （51407177）
国家电网公司科技项目(DZ71-16-001).The National High Technology Research and Development of China 863 Program (863 Program)(2015AA050102) （DZ71-16-001）
Project Supported by National Natural Science Foundation of China (51407177) （51407177）
State Grid Corporation of China Research Program (DZ71-16-001). （DZ71-16-001）
