用于架空线路载流量计算的实时太阳辐射强度计算模型

发布时间：2018-01-20 02:51

本文关键词： 太阳辐射强度架空线载流量大气厚度辐射衰减系数　出处：《华南理工大学学报(自然科学版)》2016年11期 　论文类型：期刊论文

【摘要】：为了克服架空线路载流量计算时将太阳辐射强度视为定值的缺陷,充分挖掘导线潜在的输送能力,首先以100 W/m~2的太阳辐射强度为梯度,讨论了太阳辐射强度取值对不同截面导线载流量计算的影响;然后,基于大气对太阳辐射的衰减规律,引入辐射衰减系数,建立太阳辐射强度的实时计算模型,该模型可根据不同地区的经纬度以及具体时刻,将太阳辐射强度的计算转化为太阳射线穿过大气层厚度的计算,达到评估某地区实时太阳辐射强度的目的;最后,结合山西大同地区2012年的气象监测数据和IEEE 738—2006提供的方法,对所提模型的准确性进行了检验,发现模型计算的太阳辐射强度与实际测量值基本吻合,最大误差在70 W/m~2以内,且文中方法比IEEE方法更接近监测数据,更能满足架空线路载流量计算的要求.
[Abstract]:In order to overcome the defect that the solar radiation intensity is regarded as a fixed value in the calculation of overhead line load, the potential transmission capacity of the wire is fully excavated. Firstly, the solar radiation intensity of 100 W / m ~ 2 is taken as the gradient. The influence of the solar radiation intensity on the calculation of the carrying capacity of different cross-section conductors is discussed. Then, based on the attenuation law of atmospheric radiation to the sun, the radiation attenuation coefficient is introduced, and the real-time calculation model of solar radiation intensity is established. The model can be calculated according to the latitude and longitude of different regions and the specific time. The calculation of solar radiation intensity is transformed into the calculation of the thickness of solar radiation through the atmosphere to evaluate the real time solar radiation intensity in a certain area. Finally, combined with the meteorological monitoring data of 2012 in Datong area of Shanxi Province and the method provided by IEEE 738-2006, the accuracy of the proposed model is verified. It is found that the solar radiation intensity calculated by the model basically coincides with the actual measured value, and the maximum error is less than 70 W / mm2, and the method in this paper is closer to the monitoring data than the IEEE method. More can meet the overhead line load capacity calculation requirements.
【作者单位】：华南理工大学电力学院;
【分类号】：TM726.3;;TM732
【正文快照】： 国家电网公司在“十三五”期间继续稳步推进不利于架空线路长期载流量的确定和实时载流量的智能电网的建设,构建更安全、高效的电网,并将评估.“分析、预测未来电力需求”作为主要研究内容之长期以来,国内外学者对太阳辐射强度的计算一.作为电网大动脉的架空线输电线路,其动态

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