1000mm^2大截面导线用防振锤设计  

Damper Design for 1000-mm^2 Conductor

作　　者：万建成[1] 周立宪[1] 刘臻[1] 齐翼[1] 展雪萍[1] 张立春[1] 曹道珍[1] 

机构地区：[1]中国电力科学研究院,北京市100055

出　　处：《电力建设》2011年第1期94-98,共5页Electric Power Construction

基　　金：国家电网公司科技项目(1000mm2导线绝缘子金具串研究)

摘　　要：±660kV宁东—山东直流输电示范工程一般线路使用1000mm2大截面钢芯铝绞线(型号JL/G3A-1000/45),需要采用加装防振锤来抑制此段线路微风振动。通过防振锤的保护频率的公式计算及导线自阻尼试验,最终确定JL/G3A-1000/45型导线需要用防振锤防护的频率为5～50Hz。经过计算分析设计出合理的锤头,选择了与之匹配的镀锌钢绞线,使实测谐振频率与理论计算值基本吻合。通过防振锤的样品试制及防振效果评估试验分析,设计的防振锤达到工程使用要求。The 1 000 mm2 aluminum conductor steel reinforced（ACSR）（JL/G3A-1000/45） is used for the general lines of ±660 kV Ningdong-Shandong DC power transmission demonstration project and dampers are used to reduce aeolian vibration.Based on the calculation with the protection frequency formula of dampers and the self-amortization test of conductors,the protection frequency of the dampers for the JL/G3A-1000/45 conductor is determined as 5～50 Hz.Reasonable damper head is designed through calculation and the stranded galvanized steel wires are selected that matches to the head.As a result,the measured resonance frequency basically matches to the theoretical calculation values.According to sample trial-produce of dampers and test analysis of their vibration-proof effects,the designed damper satisfies the project requirements..

关 键 词：±660kV直流输电 ±660kV宁东—山东直流输电示范工程 大截面钢芯铝绞线 微风振动 防振锤 谐振频率 

分 类 号：TM76[电气工程—电力系统及自动化]