高壓架空輸電線路分裂導線溫度場仿真分析
周象賢1,溫典1,王少華1,劉巖2,蔣愉寬1,李特1
(1 國網浙江省電力公司電力科學研究院,浙江 杭州 310014;2 國網浙江省電力公司,浙江 杭州 310007)
摘 要:為了增大載流量和控制電暈放電,高壓架空輸電線路普遍采用分裂導線結構。由于子導線鄰近架設,其溫度場間可能存在相互影響,導致導線載流量下降。建立了分裂導線的溫度場仿真模型,對子導線間溫度場的相互影響進行了計算,得到了子導線間溫度場相互影響對分裂導線載流量的影響規律,認為采用單根導體載流量乘以分裂數的方式獲得架空輸電線路載流量的方式是滿足工程實踐需要的。
關鍵詞:分裂導線;溫度場;載流量
中圖分類號:TM726.3 文獻標識碼:A 文章編號:1007-3175(2017)03-0020-03
Simulation Analysis of Bundle Conductors Thermal Field in High Voltage Overhead Transmission Lines
ZHOU Xiang-xian1, WEN Dian1, WANG Shao-hua1, LIU Yan2, JIANG Yu-kuan1, LI Te1
(1 State Grid Zhejiang Electric Power Research Institute, Hangzhou 310014, China;
2 State Grid Zhejiang Electric Power Company, Hangzhou 310007, China)
Abstract: To increase the ampacity and reduce corona discharge, bundle conductors are widely used in high voltage overhead transmission lines. Due to the close proximity of sub-conductors, the thermal fields might interfere with each other and led to decrease ampacity of the conductors. This paper established the simulation model of bundle conductors thermal fields and carried out calculation for the interaction effect between sub-conductors thermal fields to obtain the influence rule of bundle conductors ampacity from sub-conductors thermal fields. Adopting single conductor ampacity multiply by split number to get overhead transmission lines ampacity could meet the requirements for engineering practice.
Key words: bundle conductors; thermal field; ampacity
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