复合防风偏绝缘子在抑制输电线路风偏中的应用研究  

The Application of Composite Wind Offset Insulator in Restraining Wind Deviation of Transmission Lines

作　　者：屈子淇 郝锦琦 张有佳[2] QU Ziqi;HAO Jinqi;ZHANG Youjia(Guangdong Power Grid Co.Ltd.Foshan Power Supply Bureau,Foshan Guangdong 528000;Architecture Engineering College,Northeast Electric Power University,Jilin Jilin 132012)

机构地区：[1]广东电网有限责任公司佛山供电局,广东佛山528000 [2]东北电力大学建筑工程学院,吉林吉林132012

出　　处：《东北电力大学学报》2023年第5期93-100,共8页Journal of Northeast Electric Power University

基　　金：国网内蒙古东部电力有限公司建设分公司资助项目(SGTYHT/21-JS-223);国家自然科学基金项目(51508074)。

摘　　要：为了弥补目前输电线路防风偏方法的不足之处,寻求高效的输电线路防风偏装置。通过塔-线-绝缘子-防风偏装置耦合模型的风致反应分析,研究复合防风偏斜撑支柱式绝缘子的防风偏有效性以及影响其防风偏效果的相关因素。研究结果表明:所采用的复合防风偏斜撑支柱式绝缘子具有超强的防风偏效果,相比于未加装新装置,加装新装置后的输电线路防风偏降低幅度高达95.6%;其结构参数对抑制风偏的影响很大:风致引起的绝缘子串处的最大风偏角随磁流变液屈服强度增大而减小,减小幅度为0.022°风偏角/kPa;其随SMA螺旋弹簧等效刚度的增大也减小,减小幅度为0.073°风偏角/kN/m;其随着活塞有效长度增大而减小,减小幅度为0.021°风偏角/mm;其随着活塞间隙增加而增大,增大幅度为0.51°风偏角/mm。因此,在应用复合防风偏斜撑支柱式绝缘子进行输电线路抗风偏设计时,应选择磁流变液屈服强度大、SMA螺旋弹簧等效刚度大、活塞有效长度长、活塞间隙小的绝缘子,如此可使在不改变绝缘子外部尺寸的情况下达到更好的抑制风偏效果。In order to make up for the shortcomings of the current transmission line wind deflection prevention methods,an efficient transmission line wind deflection prevention device is sought.Based on the wind-induced reaction analysis of the coupling model of tower-wire-insulator and wind-deflecting device,the wind-deflecting effectiveness of the composite wind-deflecting strut insulator and the related factors affecting its wind-deflecting effect are studied.The results show that the composite windproof skew prop insulator has a strong windproof effect,and the windproof deviation of the transmission line after installing the new device is reduced by 95.6%compared with that without installing the new device.The structural parameters have great influence on the inhibition of wind deflection:the maximum wind deflection Angle at the insulator string induced by wind decreases with the increase of the yield strength of Mr Fluid,and the decrease is 0.022°wind deflection Angle/kPa;It also decreases with the increase of the equivalent stiffness of the SMA helical spring,and the decrease is 0.073°wind deflection Angle/kN/m.With the increase of the effective length of the piston,it decreases by 0.021°wind declination Angle/mm.It increases with the increase of piston clearance,and the increase is 0.51°wind declination Angle/mm.Therefore,in the design of transmission line anti-wind deflection with composite windproof skew prop insulators,the insulators with large yield strength of magneorheological fluid,large equivalent stiffness of SMA helical spring,long effective length of piston and small gap of piston should be selected,which can achieve better wind deflection inhibition effect without changing the external size of the insulator.

关 键 词：输电线路 复合阻尼器 结构参数 最大风偏角 

分 类 号：TM753[电气工程—电力系统及自动化]