断续负载条件下中低压电力电缆载流特性研究

Investigation of the Ampacity Characteristics of LV/MV Power Cables under Intermittent Loads

在某些断续负载、大传输容量的应用中,为确保供给电能的中低压电力电缆安全可靠地工作,需要预测其载流特性。本文主要针对断续负载条件下中低压电缆的非稳态发热过程及相关问题,一方面从理论角度,解决电缆在特定负载条件下的发热特性问题;另一方面,结合具体载流试验,分析电缆的发热过程及规律。

For some cable applications with intermittent loads and large transmission capacity, it is necessary to predict the cable ampaeity characteristics in order to ensure safe and reliable operation of the LV/MV power cables which transmit electric power. In terms of the unsteady thermal process of LV/MV cables under intermittent loads and related problems, the authors of this paper attempted to solve the thermal process problem under specific load theoretically on one hand and analyze the thermal process and its law in combination with the practical load testing on the other.