Journal of South China University of Technology(Natural Science) >

2016 , Vol. 44 >Issue 2: 81 - 88

DOI: https://doi.org/10.3969/j.issn.1000-565X.2016.02.013

Power & Electrical Engineering

Calculation Model and its Verification for Cable Emergency Time of 10 kV Three-Core Cable

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  • 1.School of Electric Power,South China University of Technology,Guangzhou 510640,Guangdong,China; 2.Guangzhou Power Supply Bureau Co.,Ltd.,Guangzhou 510620,Guangdong,China
刘刚(1969-) ，男，副教授，主要从事智能高压电网、过电压及其防护、电力设备外缘等的研究．

Received date: 2015-01-07

  Revised date: 2015-08-16

  Online published: 2016-01-04

Supported by

Supported by the National High-Tech R&D Program of China( 863 Program) ( 2015AA050201)

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Abstract

transient thermal circuit model of 10kV three-core cables directly laid in soil is established and simplified into an equivalent first-order RC thermal circuit.Then,the relationship between the emergency time and the core temperature is deduced by using the established model,and the temperature rising experiments of the cable are designed and carried out to measure the emergency time under different emergency loads.Finally,the measured values are compared with the calculated ones to verify the correctness of the theoretical calculation,discover the causes of error and reveal the variation of cable's emergency time under different emergency loads.The present study provides a theoretical foundation for the operation of power cables in power sectors.

Key words： three-core cable; direct burial laying; transient thermal circuit model; core temperature; emergency time; emergency load

Cite this article

LIU Gang WANG Peng LI Wen-xiang . Calculation Model and its Verification for Cable Emergency Time of 10 kV Three-Core Cable[J]. Journal of South China University of Technology(Natural Science), 2016 , 44(2) : 81 -88 . DOI: 10.3969/j.issn.1000-565X.2016.02.013

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