摘要
深入开展分裂导线温度分布特性研究,对提高输电线路导线的设计水平具有重要的工程意义。为此,基于空气动力学方程和热力学方程建立导线温度分布计算模型,计算模型与IEEE 738计算方法、CIGRE WG22.12计算方法以及试验数据是一致的,研究发现:LGJ-400/35型导线四分裂在海拔高度H=0m的情况下,导线之间的温度不平衡等效于单根导线载流量增加6%~7%,而六分裂时这个等效超过了10%。随着海拔高度的增加,分裂导线之间的温度不平衡程度进一步加剧。
To further research on the characteristics of a split conductor temperature distribution is of great signifcance for raise the level of the design of the transmission line. Therefore, based on the aerodynamics equation and the thermodynamic equation, the wire temperature distribution calculation model is established. Through the calculations and experiments analysis, it is found that conductor temperature distribution obtained in the present work agree well with those of IEEE 738 calculation method and CIGRE WG22.12 calculation method. The study found that: the temperature deviation ?T caused by different position in the four-split transmission wire with LGJ-400/35 wire and the six-split transmission wire with LGJ-400/35 wire is respectively equivalent to the increase of temperature caused by conductor carrying capacity increased about 6%~7% and more than 10% at H=0 m. The temperature deviation ?T of split-conductor increases with the increase of altitude.
作者
赵新宇
贾振宏
张瑞永
姚成
彭庆军
王晓静
周天春
ZHAO Xinyu;JIA Zhenhong;ZHANG ruiyong;YAO Cheng;PENG Qingjun;WANG Xiaojin;ZHOU Tianchun(CEEC Jiangsu Power Design Institute Co.,Ltd.,Nanjing 210000,China;Electric Power Research Institute of Yunnan Power Grid Corporation,Kunming 650217,China;State Key Laboratory of Power Transmission Equipment&System Security and New Technology,Chongqing University,Chongqing 400030,China;Electric Power Planning and Engineering Institute,Beijing 100120,China)
出处
《电气应用》
2020年第10期45-51,共7页
Electrotechnical Application
基金
中国电机工程学会青年人才托举工程(JLB-2017-288)
国家重点研发计划“重大科学仪器设备开发”重点专项高重复频率高压脉冲源研制与产业化项目(2017YFF0104300)
中国博士后科学基金资助(2014M552552XB)。
关键词
空气动力学
热力学
有限元
分裂导线温度分布
air dynamic equation
thermodynamic equation
fnite element method
the temperature distribution of split transmission wire
