基于架空导线动态模式的经济电流密度

Economical Current Density Calculation Based on Overhead Transmission Line Dynamic Model

从架空线路年计算费用的构成和计算入手,导出了导线经济电流密度J_∞的计算式,提出了导线价格α和电能单价β两个动态参数是影响架空导绒经济电流密度的两大主要因素,并分析了三者间的相关关系;阐明了原国家颁布的经济电流密度在现阶段使用的不合理性,给出了现阶段经济电流密度推荐值及方便实用的J_β=f(α/β)曲线,为动态模式下架空导线经济电流密度的取值提供了方法和依据。

This paper started with the composing and calculation of overhead transmission line the annualized fees, then the wire economical current density formula.Jec was derived. The fact was put forward that traverse prices α and the price of electric overhead transmission line β are the two major economic factors affecting the current density. This paper analyzed the relationship among the three parameters. Irrationality of the former economic current density at this stage was illustrated. The current economic value of the current density and practical convenience curve Jec= f （α/β） were recommend. The method and the basis for the dynamic pattern overhead transmission line economical current density value were provided.