输电线路动态增容载流量计算模型的研究  

Study on Calculation Model of the Dynamic Compatibilization Carrying Capacity of Transmission Lines

作　　者：张钰宁[1] 程养春[1,2] 陈凯[1] 田野[1] 孔建良 

机构地区：[1]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 [2]华北电力大学新能源电力系统国家重点实验室,北京102206

出　　处：《现代电力》2013年第6期88-91,共4页Modern Electric Power

摘　　要：针对现有输电线路温度-载流量计算模型依赖环境气象数据的不足,提出一种载流量计算方法——实况比拟法,即在输电导线附近设置一定长度的温度可控的受热导体,使其温度达到载流导线的最大允许温度,通过对受热导体的温度及其加热功率的监测,计算出导线的最大载流量。为降低受热导体的运行温度,提出实况比拟模型的低温运行模式,即于输电导线附近再设置一段参考导体,通过监测参考导体温度、受热导体温度及其加热功率,计算出导线的最大载流量。最后,通过实验验证了实况比拟法计算载流量的可行性并基于此原理设计了一种输电线路动态增容装置。For the existing temperature-carrying capacity calculation models of transmission lines depending on the environment meteorological data,a kind of carrying capacity calculation method,live analogy,is proposed.A conductor whose temperature can be controlled is set near the transmission conductor,and it is heated until the temperature reaches the maximum allowable temperature.The maximum carrying capacity can be calculated by measuring the temperature of the heated conductor and the heating power.In order to reduce the operation temperature of the heated conductor,a low-temperature operation mode of live analogy model is put forward,by using of which the maximum carrying capacity can be calculated by measuring the temperature of reference conductor and heated conductor and its heating power through setting a reference conductor near the transmission lines again.In the end,the feasibility of carrying capacity calculation by using of the live analogy method is verified through experiments and a dynamic compatibilization device of transmission line is designed based on proposed principle.

关 键 词：输电线路 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]