500 kV线路用抗舞间隔棒的研制与性能测试

Development and Performance Test of Anti-galloping Spacers for 500kV Line

针对线路舞动造成间隔棒受损问题,依托河南尖山真型舞动试验线路,对舞动状态下间隔棒的动态承载特性进行测试分析,并结合试验线路间隔棒的舞动受损特征统计及原因分析,寻找间隔棒舞动承载薄弱部位。在此基础上,从间隔棒的一般技术要求和舞动区的特殊要求出发,通过蝶形阻尼关节橡胶垫限位连接、扣合式双框板设计及铝合金材料选型等优化,研制开发了舞动区500 k V线路用新型抗舞间隔棒。极限承载试验表明,相比传统的双框板间隔棒,新型抗舞间隔棒顺线握力提升28%,拉压载荷提升114%,向心力载荷提升44%以上,整体承载强度提升24%,机械性能大幅度提升,现已在河南省500 k V输电线路中得到应用。

Galloping is the main factor affecting the safety operation of transmission lines in winter. Aiming at the seriousdamage problems caused by conductor galloping,a series of researches were carried out on the full-scale galloping test line inHenan Jianshan,with consideration of damage characteristics and the cause of the damage,to find the bearing weakness partsof the spacers. On the basis of this,this research initially starting from the general technical requirements of the spacers and thespecial requirements of the galloping area,optimized the connection pad limit of the butterfly damping rubber,the design ofdouble-frame plate and the selection of aluminum alloy materials. A new type of anti - galloping spacer utilized in 500kVtransmission lines was developed. The ultimate bearing test of the spacers has showed that,comparing with current double-frame type spacers,the new type spacers grip strength increased by 28%,the pull pressure load increased by 114%,thecentripetal load increased over 44% and the overall bearing ability increased by 22%, as such the overall mechanicalperformance has been greatly improved,and the special spacer is widely used in 500kV lines in Henan,and has a goodapplication effect.