电测与仪表Issue(9)：67-72,6.
轻型直流输电的不平衡故障控制策略研究
Control Strategy Analysis on VSC-HVDC under Unbalanced Grid Conditions
王林川 1李学良 1尚莹 2李明 1万晶1
作者信息
- 1. 东北电力大学 电气工程学院，吉林 吉林132012
- 2. 朝阳供电公司，辽宁 朝阳122000
- 折叠
摘要
Abstract
Grid voltage imbalance is an inevitable problem for voltage source converter based high voltage direct cur-rent transmission (VSC-HVDC) system. Due to the voltage source converter in conventional control would spread the second order fluctuation in DC voltage from one station to the other via the DC cables and further affect the system operation stability when the AC voltage unbalance appears, This paper takes both the VSC power and system side pow-er into account, and adopts the adaptive variable structure sliding-mode controller whose model is derived inαβrefer-ence frame based on the study of unbalanced control strategy of VSC. Finally, the detailed model of VSC-HVDC is set up in the environment of PSCAD/EMTDC, and the effectiveness of the proposed control strategy is verified by sim-ulation results.关键词
电网电压不平衡/高压直流输电/电压源型换流器/自适应变结构滑模控制Key words
unbalanced grid condition/HVDC/voltage source converter/adaptive variable structure sliding-mode control分类
信息技术与安全科学引用本文复制引用
王林川,李学良,尚莹,李明,万晶..轻型直流输电的不平衡故障控制策略研究[J].电测与仪表,2014,(9):67-72,6.
