中国电机工程学报2017，Vol.37Issue(15)：4344-4354,11.DOI:10.13334/j.0258-8013.pcsee.170105
基于频率同步控制的VSC-HVDC在弱交流系统下的动态特性研究
Dynamics Investigation of VSC-HVDC With Frequency Based Synchronization Control Under Weak AC Grid Condition
摘要
Abstract
This paper investigated the impact of frequency-based synchronization control (FSC) approach on Voltage Source Converter based HVDC (VSC-HVDC) under weak AC grid condition.The small-signal model of VSC-HVDC system under FSC was developed,and the dynamic performances comparisons between small-signal analysis and detailed electromagnetic transient simulation in PSCAD/EMTDC were conducted.The results validate the small-signal model.Then,based on this model,the paper analyzed the impact of power-synchronization and damping coefficients of FSC on small-signal stability of VSC-HVDC.Finally,the dynamic performances were investigated under three transient operating conditions,i.e.frequency variation,load step-change and three-phase to ground fault.The conclusions can be obtained that the adopted FSC approach enhances the small-signal stability,and presents favorable frequency-tracking response and over-current limiting ability.关键词
电压源型换流器/弱交流系统/频率同步控制/动态特性Key words
voltage source converter/weak AC grid/frequency based synchronization control/dynamic performance分类
信息技术与安全科学引用本文复制引用
郭春义,宁琳如,刘炜,赵成勇,刘栋..基于频率同步控制的VSC-HVDC在弱交流系统下的动态特性研究[J].中国电机工程学报,2017,37(15):4344-4354,11.基金项目
国家自然科学基金项目(51507060) （51507060）
先进输电技术国家重点实验室开放课题资助 （）
中央高校基本科研业务费专项资金资助(2016MS07).Project Supported by National Natural Science Foundation of China (51507060) （2016MS07）
The State Key Laboratory of Advanced Power Transmission Technology （）
The Fundamental Research Funds for the Central Universities (2016MS07). （2016MS07）
