摘要
输变电工程在进行投资分析时,通常需要估算实际运行时的年均输送电量和对应的线路电阻损耗。通过理论推导和实际数据分析,研究并得出了交、直流输电损耗小时τ与利用小时te关系,交流输电系统为τ≈te2/T0,直流输电系统则为τ≈te-1 000。进而探讨其在工程技术经济分析中的作用,并针对不同边界条件下的输变电工程建设提出建议。
In order to obtain the investments of power transmission and transformation projects,it is normally needed to estimate the annual mean transmission capacity and the relating line resistance loss in operation.In this paper,the relationship between the the loss hourt and the utilization hour τ in both AC and DC transmission systems was analyzed and obtained through theoretical derivation and actual data analysis.For the AC transmission systems,τ ≈ t2e/T0 and for the DC transmission systems,τ ≈ te-1 000.The contributions on the technique economy analysis was discussed.Finally,advices were provided in constructing the power transmission and transformation projects in different boundary conditions.
出处
《中国电力》
CSCD
北大核心
2014年第3期140-145,共6页
Electric Power
关键词
利用小时
损耗小时
利用率
损耗比率
经济电流密度
工程造价
Available hours
Lossing hours
Utilization rate
Loss rate
Economical current density
Construction cost
