Calculation and Numerical Fitting of Heat Transfer Coefficient for 110~500 kV Zinc Oxide Arrester

doi:10.3969/j.issn.1008-0198.2024.03.009

Hunan Electric Power ›› 2024, Vol. 44 ›› Issue (3): 64-69.doi: 10.3969/j.issn.1008-0198.2024.03.009

• Invited Column:Digital Operation and Inspection Technology for Power Transmission and Transformation Equipment • Previous Articles Next Articles

Calculation and Numerical Fitting of Heat Transfer Coefficient for 110~500 kV Zinc Oxide Arrester

LIU Bo¹, ZHANG Xiaojing², GONG Yong³, YANG Xinghong³, GUO Dongkai⁴, CAI Wei¹

1. NARI Group Liability CorporationState Grid Electric Power Research Institute Liability Corporation, Wuhan 430074, China;
2. Hubei University of Economic and Technical Training, Wuhan 430205, China;
3. Gansu Hongxing Construction Company Co.,Ltd.,Jiuquan 735000, China;
4. China National Petroleum Corporation Yumen Oilfield Branch, Jiuquan 735000, China

Received:2024-03-07 Revised:2024-04-24 Online:2024-06-25 Published:2024-07-10

Abstract

Abstract: :In view of the faults caused by aging, moisture or short circuit of zinc oxide arrester during long-term operation, a typical electrothermal coupling model is established based on the parameters of 110~500 kV arrester. The multi-physical field simulation modeling method of lightning arrester is introduced, and the calculation method of convective heat transfer coefficient on the outer wall of zinc oxide lightning arrester based on the outflow field is proposed. The change rule and function of convective heat transfer coefficient of porcelain and composite jacket zinc oxide lightning arrester are obtained. The validity of the calculation results of convective heat transfer coefficient is verified by comparing the electro-thermal coupling calculation with the three-dimensional fluid-thermal coupling temperature field calculation. It can provide numerical reference for multi-physical field simulation of arrester.

Key words: arrester, temperature rise, electro-thermal coupling, simulation model, heat transfer

CLC Number:

TM862.1

LIU Bo, ZHANG Xiaojing, GONG Yong, YANG Xinghong, GUO Dongkai, CAI Wei. Calculation and Numerical Fitting of Heat Transfer Coefficient for 110~500 kV Zinc Oxide Arrester[J]. Hunan Electric Power, 2024, 44(3): 64-69.

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Calculation and Numerical Fitting of Heat Transfer Coefficient for 110~500 kV Zinc Oxide Arrester

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