摘要
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jec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线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jec=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 presents a formula for calculating the economic current density j∞ derived from the composition of the calculated yearly costs of overhead conductors and the method to calculate them. The authors thought that the conductor price a and the electricity unit price β are two main factors affecting the economic current density j∞ and analyzed the relationship among the three parameters. They have demonstrated that the original economic current density specified by the State authority is unreasonable in present days and given the updated recommended value of the economic current density and an easy and practical equation j∞ = f（α/β） to calculate the economic current density of overhead conductors under dynamic mode.
出处
《电线电缆》
2007年第3期31-33,共3页
Wire & Cable
关键词
动态模式
架空导线
年计算费
电流密度
dynamic mode
overhead conductor
calculated yearly costs
current density
