高电压技术2017，Vol.43Issue(7)：2131-2139,9.DOI:10.13336/j.1003-6520.hve.20170628005
直流换相失败及恢复过程暂态无功特性及控制参数影响
HVDC Transient Reactive Power Characteristics and Impact of Control System Parameters During Commutation Failure and Recovery
摘要
Abstract
During HVDC commutation failure,the reactive power exchanged between HVDC and the sending-side/receiving-side system will change remarkably,behaving as the characteristic of unfavorable reactive impact load.Therefore,it is quite necessary to further study the HVDC sending-side and receiving-side transient reactive power characteristic during commutation failure.Firstly,we put forward the HVDC sending-side and receiving-side reactive power equations during steady-state and transients.Then,we analyzed the HVDC sending-side and receiving-side reactive power characteristics during commutation failure and recovery,respectively.Finally,we studied the impact of the HVDC control system parameters on transient reactive power characteristic.All the contents were verified by simulation of the HVDC equivalent case system.The study shows that,during commutation failure,HVDC will absorb some reactive power from the receiving-side system,and will first absorb large reactive power then send large reactive power to the sending-side system.During recovery of commutation failure,HVDC will normally first send large reactive power then absorb some reactive power from the receiving-side system,and absorb some reactive power from the sending-side system.The maximum reactive power exchanged between HVDC and the sending-side/receiving-side system during commutation failure can be decreased by optimizing some significant control parameters of voltage-dependent current order limit,commutation failure prediction,and current control amplifier,etc.关键词
换相失败及恢复过程/送受端系统/暂态无功特性/电压失稳/过电压/控制系统参数Key words
commutation failure and recovery/sending-side and receiving-side system/transient reactive power characteristics/voltage instability/overvoltage/control system parameters引用本文复制引用
屠竞哲,张健,曾兵,刘明松,易俊,卜广全..直流换相失败及恢复过程暂态无功特性及控制参数影响[J].高电压技术,2017,43(7):2131-2139,9.基金项目
国家电网公司科技项目(XT71-16-046) （XT71-16-046）
国家重点研发计划(2016YFB0900805).Project supported by Science and Technology Project of SGCC (XT71-16-046),National Key Research and Development Program of China (2016YFB0900805). （2016YFB0900805）
