Journal of South China University of Technology(Natural Science Edition) ›› 2016, Vol. 44 ›› Issue (11): 140-146.doi: 10.3969/j.issn.1000-565X.2016.11.021

• Power & Electrical Engineering • Previous Articles    

A Real-Time Solar Radiation Intensity Calculation Model for Calculating Transmission Capacity of Overhead Conductor

LIU Gang HE Geng-sheng LI Yang HAO Jin-bao QI Kun-lun TANG Jian-lin   

  1. School of Electric Power,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2016-05-12 Revised:2016-07-06 Online:2016-11-25 Published:2016-10-04
  • Contact: 刘刚( 1969-) ，男，博士，副教授，主要从事电气设备在线监测与故障诊断、过电压及其防护、电力设备外绝缘研究． E-mail:liugang@scut.edu.cn
  • About author:刘刚( 1969-) ，男，博士，副教授，主要从事电气设备在线监测与故障诊断、过电压及其防护、电力设备外绝缘研究．
  • Supported by:

    Supported by the National High-Tech R&D Program of China( 2015AA050201)

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Abstract:

In order to explore the potential transmission capacity and overcome the defect that solar radiation intensity is regarded as a constant when the transmission capacity of overhead conductors is calculated,by adopting a solar radiation intensity gradient of 100W/m2,the influence of the solar radiation intensity on the transmission capacity of overhead conductors of different kinds of cross-sectional areas is discussed.Then,on the basis of the atmospheric attenuation law of solar radiation and by introducing an attenuation coefficient,a real-time solar radiation evaluation model is constructed.In the model,according to specific time and the longitudes and latitudes of different regions,the problem is converted into another problem of calculating the distance of the solar radiation getting through the atmosphere,thus realizing the purpose of evaluating the real-time solar radiation intensity of a region.Finally,by using the meteorological data of Datong,Shanxi Province in 2012 and the data calculated by the formulas of IEEE 738—2006,the accuracy of the constructed model is verified.It is found that the data calculated by this model can fit the meteorological data well,with a maximum error within 70W/m2,and the fit is better than the data calculated by the formulas of IEEE 738—2006,which means that this model can meet the requirements of calculating the transmission capacity of overhead conductors.

Key words: solar radiation intensity, overhead conductor, transmission capacity, atmospheric depth, radiation attenuation coefficient

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