输电线路动态增容载流量计算模型综述  

Review of Ampacity Computation Model of Transmission Line's Dynamic Capacity-Increase

作　　者：戴沅[1] 聂耸[2] 程养春[2,3] 王伟然[4] 

机构地区：[1]广东电网公司电力科学研究院,广东广州510080 [2]华北电力大学高电压与电磁兼容北京市重点实验室,北京102206 [3]华北电力大学新能源电力系统国家重点实验室,北京102206 [4]广东电网公司东莞供电局,广东东莞523008

出　　处：《广东电力》2012年第11期51-56,共6页Guangdong Electric Power

基　　金：广东电网公司重点科技项目(K-GD2011-431)

摘　　要：动态增容技术可提高输电线路输送能力,而导线载流量计算的准确度影响了动态增容的效果,载流量计算模型的优化是关键。根据架空导线的边界条件和气象条件,计算增容线路载流量常用的模型有:气候模型、导线温度模型及张力模型,对各模型的优缺点进行分析比较。在此基础上,介绍了一种改进的导线温度模型,对其计算原理、温度传感器特性进行了分析。对于不同的地理位置和气候条件选择准确的计算模型可提高计算导线输送容量的精确度,有效提高输电线路传输容量。Dynamic capacity increase technology can improve transmission capacity of transmission lines while accuracy rating of current carrying capacity calculation may affect its effectiveness and optimization for current carrying capacity calculation model is a key point. Therefore, this paper analyzes and compares merits and demerits of common calculation models inclu- ding climate model, wire temperature model and tension modes according to boundary conditions and weather conditions of overhead conductors. On the basis of above analysis, it introduces one improved wire temperature model and analyzes its cal- culation principles and characteristics of temperature transmitter. The result shows that correct choose for calculation model due to different geographical location and weather conditions may improve calculation accuracy of transmission capacity of wires and increase transmission capacity of electric transmission lines.

关 键 词：动态增容 载流量 热平衡方程 导线温度 

分 类 号：TM751[电气工程—电力系统及自动化]