基于电缆暂态载流量的新能源电站电力电缆截面优化

Optimization of Power Cable Section of New Energy Power Station Based on Cable Transient Current Carrying Capacity

实际工程中,一般把最大负载电流作为持续电流来进行电力电缆截面选择。但对于风电、光伏等新能源电站,负载存在周期性波动,电力电缆按照最大负载电流选择存在很大的浪费。本文提出了一种基于电缆暂态载流量的任意形状波动负载电缆载流量迭代计算方法,输入参数少,计算过程简单,有利于优化风电、光伏等新能源电站电缆截面从而避免资源的浪费。

In practical engineering,the maximum load current is generally taken as the continuous current to select the section of power cable.However,for wind farm,photovoltaic power station and other new energy power stations with the load fluctuates periodically,there is a great waste in selecting the power cable according to the maximum load current.This paper presents an iterative calculation method of cable ampacity of variant shape fluctuating load based on cable transient ampacity.It has few input parameters and simple calculation process,which is conducive to optimizing the cable section of new energy power stations,so as to avoid the waste of resources.