高电压技术2017，Vol.43Issue(4)：1168-1174,7.DOI:10.13336/j.1003-6520.hve.20170328014
基于广域测量系统的多馈入直流低压限流单元的协调控制方法
Coordinated Control Method of VDCOLs in MIDC System Based on the Wide-area Measurement System
摘要
Abstract
In order to improve the performances of failure recovery characteristic of the MIDC,we proposed a novel control method for coordinated VDCOLs after studying the influence of VDCOL on the voltage stability of HVDC system.Firstly,a sensitivity analysis method is used to study the effect of DC on AC/DC power system voltage stability;secondly,a control method for coordinated VDCOLs is designed based on the WAMS.According to the measurement resuits of phasor measurement unit,the effect of fault on the DC transmission subsystem is assessed,and it can adjust and control the output of the HVDC subsystems' VDCOL near by the fault point in order to improve the dynamic performance of MIDC system.Finally,a simulation is performed to verify the coordinated control method.From the simulation results,it can be verified that the coordinated control method of the VDCOLs based on the wide-area measurement system can avoid the continuous commutation failure and improve the voltage stability of the system,and thereby improve the recovery performance of the whole system.关键词
高压直流输电/多馈入直流输电/低压限流单元/广域测量系统/电压稳定性/换相失败Key words
HVDC/MIDC/VDCOL/WAMS/voltage stability/commutation failure引用本文复制引用
曾琦,李兴源,冯明,李保宏,曾雪洋..基于广域测量系统的多馈入直流低压限流单元的协调控制方法[J].高电压技术,2017,43(4):1168-1174,7.基金项目
国家重点基础研究发展计划(973计划)(2013CB228200) （973计划）
国家电网公司科技项目(522830140003).Project supported by National Basic Research Program of China(973 Program) (2013CB228200),Science and Technology Project of SGCC(522830140003). （522830140003）
