摘要
架空输电线路载流量可以采用不同的方法来计算,这些方法计算过程繁简程度不同,需要考虑的因素不同,结果也不同。给出了图表法、国标法和IEEE法的详细计算过程,比较了各种计算方法的优劣和适用场合。对于线路长期运行载流量可采用IEEE738标准方法可以计算出一段时间导线的过负荷电流大小,在紧急情况下能充分发挥导线的载流潜力。
There are different methods to calculate the current carrying capacity of overhead lines.Some of these methods should be considered many factors and it＇s difficult to calculate currents.This paper gives the detailed calculating processes of the chart method,national standard method and IEEE method.By comparing these methods,the scope of application of these methods can be obtained.The chart method isn＇t recommended for its result has the large margin and poor economy.The current carrying capacity for long-running lines can be calculated by national standard method.The IEEE method can be used to calculate the over-current for some time,which can bring lines potential into full play to transmit power.
出处
《电力学报》
2011年第5期383-387,共5页
Journal of Electric Power
关键词
超高压输电
架空导线
IEEE738标准
载流量
气象条件
ultra high voltage transmission
overhead lines
IEEE Std.738
current carrying capacity
meteorological condition
