摘要
通过对内蒙古地区500 kV汗旗Ⅰ线44号塔A相由于风偏致使导线对铁塔放电造成故障跳闸原因的分析,并对当时工况条件下的风偏角进行验算,发现风偏角过大导致导线对铁塔的电气间距太小进而短路器跳闸。在目前的技术条件下,增加重锤质量,增加垂直档距等可以有效防止风偏故障发生。
We analyzed the tripping of phase A on tower 44 of 500 kV Han-Qi line Ⅰ which was caused by tower discharge and windage yaw link in lnner Mongolia region.Calculation of windage yaw angle at accident condition was made showing that the windage yaw angle was too big,thus the clearance of line to tower was small which caused circuit breaker trip.In the present technical condition,some preventive measures are available such as increasing heavy hammer quality,widening the vertical distance etc.
出处
《华北电力技术》
CAS
2011年第4期5-8,17,共5页
North China Electric Power
关键词
输电线路
风偏
防治对策
transmission lines
windage yaw
preventive countermeasures
