Thermal Effect of Different Laying Modes on Cross-Linked Polyethylene (XLPE) Insulation and a New Estimation on Cable Ampacity

WenWei Zhu, YiFeng Zhao, ZhuoZhan Han, XiangBing Wang, YanFeng Wang, Gang Liu, Yue Xie and NingXi Zhu
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WenWei Zhu: School of Electric Power, South China University of Technology, Guangzhou 510640, China
YiFeng Zhao: School of Electric Power, South China University of Technology, Guangzhou 510640, China
ZhuoZhan Han: School of Electric Power, South China University of Technology, Guangzhou 510640, China
XiangBing Wang: Grid Planning Research Center, Guangdong Power Grid Co., Ltd., Guangzhou 510000, China
YanFeng Wang: Grid Planning Research Center, Guangdong Power Grid Co., Ltd., Guangzhou 510000, China
Gang Liu: School of Electric Power, South China University of Technology, Guangzhou 510640, China
Yue Xie: School of Electric Power, South China University of Technology, Guangzhou 510640, China
NingXi Zhu: School of Electric Power, South China University of Technology, Guangzhou 510640, China

Energies, 2019, vol. 12, issue 15, 1-22

Abstract: This paper verifies the fluctuation on thermal parameters and ampacity of the high-voltage cross-linked polyethylene (XLPE) cables with different insulation conditions and describes the results of a thermal aging experiment on the XLPE insulation with different operating years in different laying modes guided by Comsol Multiphysics modeling software. The thermal parameters of the cables applied on the models are detected by thermal parameter detection control platform and differential scanning calorimetry (DSC) measurement to assure the effectivity of the simulation. Several diagnostic measurements including Fourier infrared spectroscopy (FTIR), DSC, X-ray diffraction (XRD), and breakdown field strength were conducted on the treated and untreated specimens in order to reveal the changes of properties and the relationship between the thermal effect and the cable ampacity. Moreover, a new estimation on cable ampacity from the perspective on XLPE insulation itself has been proposed in this paper, which is also a possible way to judge the insulation condition of the cable with specific aging degree in specific laying mode for a period of time.

Keywords: thermal effect; cable; XLPE; laying modes; Comsol Multiphysics; thermal parameters; cable ampacity (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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