适用于广州地区的10kV配电电缆载流量计算系数法  

Correction Factor Method of Calculation on Ampacity of 10kV Distribution Cable Adapting to Guangdong Area

作　　者：周庆辉 王晓兵 周凡珂 张煌 郑文坚[3] 牛海清[3] 

机构地区：[1]广州供电局有限公司白云区供电局,广东广州510310 [2]广州电力工程监理有限公司,广东广州510620 [3]华南理工大学电力学院,广东广州510640

出　　处：《广东电力》2018年第2期125-129,共5页Guangdong Electric Power

基　　金：广州供电局有限公司科技项目(082300KK52150004)

摘　　要：10 kV配电电缆载流量计算大多采用系数法,但IEC标准、GB标准乃至各供电局对于10 kV配电电缆载流量计算系数法都不同。为合理安全调度电缆负荷,有必要研究载流量计算的系数法。通过对当地土壤温度的监测、土壤热阻系数的测试,确定广州地区载流量计算的基准条件为空气温度40℃、土壤温度30℃、土壤热阻1.0 K·m/W、电缆埋深1.0 m。通过对比各标准值和软件计算值确定系数法的基准载流量和修正系数的种类及值。研究结果表明,IEC标准的基准载流量和修正系数对广州地区仍然适用,仅需重新选择基准条件。The correction factor method is mostly adopted to calculate ampacity of 10 kV distribution cable , but correction factor method in IEC standard , GB standard and used by power supply bureaus for ampacity calculation are differenl. In or-der to reasonably and safely dispatch cable toad , it is necessary to study the correction tion. By monitoring local soil temperature and testing soil thermal resistance factor , referenperature , soil temperature and soil thermal resistance for ampacity calculation in Guangzhou area were determined respec-tively as 40℃, 30℃ and 1. 0 K·m/W. Reference ampacity , types and values of correction factor method were determined by comparing each standard values and software calculation values. Research results indicate reference ampacity and correc-tion factors in IEC standard are still adapting to Guangzhou area but reference conditions

关 键 词：配电电缆 载流量 系数法 基准条件 修正系数 

分 类 号：TM855[电气工程—高电压与绝缘技术]