输电线路动态热定额技术的应用

输电线路静态热定额计算, 采用特定的环境温度和风速, 比较保守。而输电线路动态热定额计算,采用实时的导线温度和气象数据, 实时反映了线路动态热容量的情况。同时在线路上配置实时监测装置和小气象站, 为调度运行人员控制线路负荷提供依据。采用动态热定额能提高线路输送容量10%～30%, 是一种廉价、有效、安全的线路增容技术。

Application of Transmission Line Dynamic Heat Rating Technology

Transmission line static heat calculation, which uses specific environment temperature and wind speed, is conservative. However, dynamic heat calculation, which uses real-time conductor temperature and weather data, reflects dynamic thermal capacity of the line. Coupled with real-time monitoring devices and mini weather station on the line, it provides basis for dispatching operators to control line load. Line capacity can be increased by 10%-30% using dynamic heat measurements, which is a cheap, effective, and safe line capacity enlarging technology.