金属箱式电缆母线中降容系数选择的探讨

分析了发电厂高压厂用电源回路采用金属箱式电缆母线载流量的计算方法,提出了影响电缆母线载流量的5个因素,即环境温度系数、不平衡系数、日照系数、金属箱壳系数、并行敷设系数,并根据这些影响因素确定最终的降容系数,进而明确实际所需的电缆根数.;The paper analyses how to calculate the capacity current on cable bus in high voltage supply system in power plants, presenting five factors which affect the capacity current in cable bus, namely temperature factor, unbalance factor, sunny factor, package factor and parallel factor.Based on these five factors, the final factor can be determined and the cable numbers can be calculated