基于虚拟电阻补偿的柔性直流输电数模混合仿真-中国电机工程学报.PDFVIP

第38 卷 第18 期 中 国 电 机 工 程 学 报 Vol.38 No.18 Sep. 20, 2018 5352 2018 年9 月20 日 Proceedings of the CSEE ©2018 Chin.Soc.for Elec.Eng. DOI ：10.13334/j.0258-8013.pcsee.180011 文章编号：0258-8013 (2018) 18-5352-09 中图分类号：TM 74 基于虚拟电阻补偿的柔性直流输电数模 混合仿真系统的功率接口建模方法 乐健，张好，李星锐，周文俊，刘开培 (武汉大学电气工程学院，湖北省 武汉市 430072) A Power Interface Modeling Method of the Digital-physical Hybrid Simulation System of MMC-HVDC System Based on Virtual Resistance Compensation LE Jian, ZHANG Hao, LI Xingrui, ZHOU Wenjun, LIU Kaipei (School of Electrical Engineering, Wuhan University, Wuhan 430072, Hubei Province, China) ABSTRACT: To improve the stability of the digital-physical 模型的仿真系统的稳定性。综合考虑稳定性和仿真精度，对 hybrid simulation system of the modular multilevel 虚拟电阻取值进行优化设计。搭建含所提改进功率接口的双 converter-based high voltage direct current (MMC-HVDC) 端双极柔性直流输电系统的仿真模型，进行稳态及暂态运行 system, a novel power interface modeling method based on the 条件下的仿真结果对比。所提方法可有效提高混合仿真系统 virtual resistance compensation was proposed in this paper. By 的稳定性，同时具有仿真精度高、易于实现的特点。 analyzing the stability condition of the current hybrid 关键词：数字物理混合仿真系统；模块化多电平换流器；理 simulation system based on the voltage source ideal 想变压器法；系统稳定性；虚拟电阻补偿 transformer model, the current of a virtual resistance was introduced to compensate the control signal of the controlled 0 引言 current source in the digital simulation system, and the stability 随着输送容量的不断提高，柔性直流输电系统 of the hybrid simulation system with the improved power 对电网的影响越来越大，其结构也逐步由单极、至 interface model was analyzed. The value of virtual resistance