Effects of harmonics in distribution systems on temperature rise and life of XLPE power cables

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI:10.1109/ICPES.2011.6156680

K. Patil, W. Gandhare

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引用次数: 25

Abstract

In the recent years due to the increased use of nonlinear loads, harmonic pollution level in distribution systems has been increased beyond the tolerable limits. This has caused many problems for distribution system components, such as additional losses and hence additional heating. Also, now, due to number of technical, environmental and social issues, the use of power cables; especially cross linked polyethylene (XLPE) power cables, is increasing at very rapid rate. Thus, power system harmonics problem and the use of XLPE power cables in distribution systems are growing simultaneously. Harmonics present in the distribution systems causes additional temperature rise and hence loss of useful life of XLPE power cables. The aim of this paper is to evaluate the effects of harmonics in distribution systems on the temperature rise and useful life of XLPE power cables. A mathematical model of XLPE power cable is developed for evaluation of effects of harmonics on temperature rise and Arrhenius equation is used to evaluate the effects of harmonics on useful life of XLPE power cables. MATLAB program is developed to implement mathematical model and to solve Arrhenius equation for real life XLPE power cables having aluminium and copper conductors. The results are presented and conclusions are drawn.

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配电系统谐波对交联聚乙烯电缆温升和寿命的影响

近年来，由于非线性负荷的使用越来越多，配电系统中的谐波污染水平已经超出了可容忍的范围。这给配电系统组件带来了许多问题，例如额外的损耗和额外的加热。此外，现在，由于一些技术，环境和社会问题，电力电缆的使用;特别是交联聚乙烯(XLPE)电力电缆，正以非常快的速度增长。因此，电力系统的谐波问题和交联聚乙烯电力电缆在配电系统中的应用同时增长。配电系统中的谐波会引起额外的温升，从而降低交联聚乙烯电缆的使用寿命。本文的目的是评估配电系统中谐波对交联聚乙烯电力电缆温升和使用寿命的影响。建立了评价谐波对XLPE电力电缆温升影响的数学模型，并利用Arrhenius方程评价了谐波对XLPE电力电缆使用寿命的影响。开发了MATLAB程序，实现了实际铝、铜导体交联聚乙烯电力电缆的数学模型和Arrhenius方程的求解。给出了研究结果并得出了结论。

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2011 International Conference on Power and Energy Systems

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