线间负荷等效为三相负荷的计算探讨

A Research on the Calculation of Line-to-line Load Equivalent to Three-phase Load

现行有关教科书中及工程上对线间负荷等效为三相负荷的计算均按部颁《技术规程》规定,即:单台时取线间负荷的3^(1/2)倍,多台时取最大线间负荷的3倍。本文从理论上计算,分析,证明这一规定存在不完整性,并提出了等效计算公式。

In the current textbooks anb engineering concerned, the calculation of line -to-line load equivalent to three-phase load is according to the stipulation in Technical Regulations which is issued by the department. That is,3^(1/3) times of line-to -line is nsed when there is only one machime,bnt when there are more than one machine, 3 times of the maximum lime -to-lime load is used. Through the calculation and anlysis of this stipulation theoretically, this article proves its imperfection and then puts forward the calculating formula of e-quivalence.