CAJ | 학술논문

330kV输电线路所采用的FR-3型防振锤结构复杂，其锤头形似音又，两端面的曲率半径较小，导致其场强较高，在实际运行中可能会发生电晕放电，从而对周围的电磁环境造成污染。采用有限元方法建立FR．3型防振锤的三维模型进行电场仿真计算，得出了防振锤的电场分布规律，据此优化了其锤头的音叉结构，将锤头端部的最高场强由3000kV／m降至2170kV／m。根据优化结果制造试品后，进行不同海拔下的电晕试验和功率特性试验，结果表明优化后的防振锤在海拔低于3500m时可有效防止电晕放电，且谐振频率和功率消耗满足要求，峰谷值之比优于旧结构，具备良好的防振性能。
330kV수전선로소채용적FR-3형방진추결구복잡，기추두형사음우，량단면적곡솔반경교소，도치기장강교고，재실제운행중가능회발생전훈방전，종이대주위적전자배경조성오염。채용유한원방법건립FR．3형방진추적삼유모형진행전장방진계산，득출료방진추적전장분포규률，거차우화료기추두적음차결구，장추두단부적최고장강유3000kV／m강지2170kV／m。근거우화결과제조시품후，진행불동해발하적전훈시험화공솔특성시험，결과표명우화후적방진추재해발저우3500m시가유효방지전훈방전，차해진빈솔화공솔소모만족요구，봉곡치지비우우구결구，구비량호적방진성능。
The FR-3 type damper used in 330 kV transmission lines is of complex structure, e.g., the damper head is similar to the form of tuning fork and the radius of curvature at both its ends is too small, and these structural features lead to higher electric field strength, so corona discharge during actual operation may occur due to such a structure and electromagnetic pollution of ambient environment may take place. A three-dimensional model of FR-3 type damper is built by finite element method （FEM） to perform simulation of electric field, and the distribution regularity of electric field of the damper is achieved and on this basis the structure of tuning fork of the damper head is optimized, thus the maximum electric field strength is from 3 000 kV/m reduced to 2 170 kV/m. Manufacturing prototypes according to the optimized structure of the damper, the corona tests and power characteristic tests are performed under different altitudes, and testing results show that adopting the optimized damper the corona discharge can be effectively prevented at the altitude lower than 3 500 meters, meanwhile its resonant frequency and power consumption can meet the requirement. The peak resonant power to valley resonant power ratio of the optimized structure under different resonant frequencies is better than that of the not optimized structure, therefore the optimized structure of the damper possesses better vibration-preventing performance.