中国电机工程学报2017，Vol.37Issue(16)：4577-4590,14.DOI:10.13334/j.0258-8013.pcsee.161937
弱交流电网条件下VSC-HVDC改进矢量控制方法
Improved Vector Control for VSC-HVDC Connected to Weak AC Grids
摘要
Abstract
When voltage source converter (VSC) based high voltage direct current (HVDC) transmission is connected to weak grids,the standard vector control of VSC can not ensure stability of the system with high power demand.This paper analyzed the steady state power flow characteristics of a weak grid connected VSC system.The characteristics of typical vector control was studied and validated through pole map analysis based on the small signal model of the VSC system.The mechanism of the instability of the VSC system with high power demand was explained.An improved outer loop with a feed forward branch was proposed to improve the transient reactive power response speed and increase the stability of the VSC system in front of high power demand.The proposed scheme was verified by pole map analysis and time-domain simulation results.关键词
电压源换流器/直流输电/弱交流电网/改进矢量控制Key words
voltage source converter/high voltage direct current/weak AC grids/improved vector control分类
信息技术与安全科学引用本文复制引用
吴广禄,周孝信,李亚楼,梁军,Agusti Egea-Alvarez,彭红英,张星..弱交流电网条件下VSC-HVDC改进矢量控制方法[J].中国电机工程学报,2017,37(16):4577-4590,14.基金项目
国家电网公司科学技术项目(FX71-16-006).Key Technology Project of State Grid Corporation of China(FX71-16-006). （FX71-16-006）
