±660 kV 宁东—山东直流输电示范工程一般线路使用1 000 mm2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5~50 Hz。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。

On ±660kV Ningdong-Shandong DC power transmission demonstration project general line, it uses JL/G3A-1000/45 large section ACSR and installs dampers to reduce aeolian vibration. According to the characteristics of the project and the conductor, the vibration frequency of 5Hz～45Hz shall be prevented with the damper for JL/G3A-1000/45. The author designed reasonable damper head through massive calculations and selected stranded galvanized steel wires that are suitable to the head, in order to make the measured resonance frequency dovetail into the theoretical calculated value basically. Frequency 1 of FDY-8 type damper is about 8.5Hz, while frequency 2 is 36Hz, and when the energy consumption is high, it may realize large protection span for JL/G3A-1000/45.