摘要
为避免重合失败对风电场及接入系统造成二次冲击,针对风电送出线路受风电运行特征影响重合成功率低的问题,提出基于风电送出线路分相跳闸方式的自适应重合闸策略。采用保留单侧健全相的重合闸动作方式,有效避免风电运行特征的影响并保证了故障耦合效果。分析不同故障情况下故障相电压的变化特性,提出基于电压幅值-角频率变化量的自适应重合闸判据,并据此确定重合策略。在PSCAD/EMTDC仿真平台搭建仿真模型进行仿真验证,仿真分析表明所提策略能准确判定故障性质并确定熄弧时间,确保风电场与并网系统的安全可靠运行。
In order to avoid the secondary impact of wind farm and access system resulted from reclosing failure,aiming at low coincidence success rate of wind power transmission lines affected by wind power operation characteristics,the wind power transmission line split-phase tripping adaptive reclosing strategy is proposed.The reclosing action mode of retaining one-sided healthy phase can effectively avoid the influence of wind power operation characteristics and ensure the fault coupling effect.The characteristics of fault phase voltage change under different fault conditions are analyzed,and the adaptive reclosing criterion based on voltage amplitude-angular frequency change is proposed,and the reclosing strategy is determined accordingly;A simulation model is constructed on the PSCAD/EMTDC simulation platform for the simulation verification.The simulation analysis shows that the proposed strategy can accurately determine the nature of fault and arc quenching time,which ensures the safe and reliable operation of wind farm and grid-connected system.
作者
赵杰祺
解超
尹纯亚
李浩
ZHAO Jieqi;XIE Chao;YIN Chunya;LI Hao(College of Electrical Engineering,Xinjiang University,Urumqi 830047,China;State Grid Chizhou Power Supply Company,Chizhou 247100,China)
出处
《智慧电力》
北大核心
2024年第9期112-118,127,共8页
Smart Power
基金
国家自然科学基金资助项目(5236070148)。
关键词
自适应重合闸策略
故障识别
电弧
送出线路
跳闸方式
adaptive reclosing strategy
fault recognition
electric arc
transmission line
trip mode
