地区天气实况数据用于架空导线动态增容的方法

架空导线载流量与气象条件相关,实现架空导线载流量的动态评价对充分利用导线载荷能力、提高电网安全经济运行水平具有重要意义.利用部分气象要素的地区一致性特点,基于架空导线微气象数据及逐小时地区天气的实况数据,分析两者在气温和日照强度上的相关性及偏差的分布规律,提出将地区天气实况数据用于地区电网架空导线动态增容的方法.算例结果表明,所提方法可得到偏保守的载流量分布及分位数,在一定程度上改善了传统静态热定值的保守性.

Dynamic capacity increase method of overhead line using practical regional weather data

The ampacity of overhead line is related to meteorological conditions, and it is of great significance to realize dynamic evaluation of the ampacity of overhead line for fully using the line transfer capability and improving the security and economic performance of power system. On the basis of regional consistency characteristic of partial meteorological factors, with the micrometeorological data of overhead line and the live hourly regional weather data, the correlation and deviation distribution between these two datasets in air temperature and solar radiation are analyzed, and a dynamic capacity increase method for overhead line in regional power system using the live regional weather data is proposed. Case results show that the proposed method can obtain conservative ampacity and quantile, which improves the conversation of traditional static thermal rating in a certain extent.