电力系统自动化2017，Vol.41Issue(4)：125-130,6.DOI:10.7500/AEPS20160701006
基于最大调制比的LCC-MMC混合直流交流侧故障控制策略
Control Strategies of LCC-MMC Hybrid HVDC Transmission Under AC System Fault Based on Maximum Modulation Index
刘志超 1时伯年 1刘斌 1熊卿 2洪潮2
作者信息
- 1. 北京四方继保自动化股份有限公司,北京市100085
- 2. 南方电网科学研究院有限责任公司,广东省广州市510080
- 折叠
摘要
Abstract
Replacing the line commutated converter (LCC) with modular multilevel converter (MMC) at the inverter side is one of the most efficient paths to avoid commutation failure.Firstly,an account is given to the topological structure of LCC-MMC hybrid high voltage direct current (HVDC) system,the basic control scheme,and the power ramp-down problem under AC system fault.Secondly,control strategies of hybrid HVDC transmission system based on maximum modulation index are proposed to maintain direct current under AC system fault by adjusting the modulation index of MMC.Finally,a hybrid HVDC simulation system is built in PSCAD/EMTDC to verify the effectiveness of the proposed control strategies.关键词
混合高压直流系统/最大调制比/交流侧故障控制策略/电流裕度控制Key words
hybrid high voltage direct current system/maximum modulation index/fault control strategies at AC side/current margin control引用本文复制引用
刘志超,时伯年,刘斌,熊卿,洪潮..基于最大调制比的LCC-MMC混合直流交流侧故障控制策略[J].电力系统自动化,2017,41(4):125-130,6.
