Heat Transfer Characteristics of Novel Resin Impregnated Paper Converter Transformer Valve-Side Bushing With Two-Phase Closed Thermosyphon

IF 4.4 2区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

High Voltage Pub Date : 2025-05-07 DOI:10.1049/hve2.70011

Qingyu Wang, Zishi Yang, Wei Hu, Zuoming Xu, Peng Liu, Zongren Peng

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Abstract

Resin impregnated paper (RIP) converter transformer valve-side bushings are the key equipment in converter stations. Local overheating of the RIP core not only reduces the transmission efficiency but also causes insulation failure of converter transformers. In this paper, a new heat dissipation structure is proposed to improve the temperature distribution homogeneity of the bushing using two-phase closed thermosyphon (TPCT). A test model is developed to determine the optimal working fluid inventory. Then, the temperature distribution of a ± 400-kV RIP converter transformer valve-side bushing with an optimised heat dissipation structure is obtained using the coupled three-dimensional electromagnetic-fluid-thermal numerical simulation method considering multiphase flow and phase change processes. The influence of the new structure on the electric field is analysed. The simulation result is verified by the temperature rise test. The results show that two-phase closed thermosyphon can reduce the maximum temperature of the RIP valve-side bushings and significantly improve the temperature distribution homogeneity.

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新型树脂浸渍纸换流变压器阀侧两相闭式热虹吸套管的传热特性

树脂浸渍纸（RIP）换流变压器阀侧套管是换流站的关键设备。RIP铁芯局部过热不仅会降低传输效率，还会导致换流变压器绝缘失效。本文提出了一种采用两相闭式热虹吸（TPCT）的新型散热结构，以改善套管温度分布的均匀性。建立了一个测试模型，以确定最佳工作液库存。然后，采用考虑多相流和相变过程的三维电磁-流-热耦合数值模拟方法，得到了优化散热结构下±400 kv RIP换流变压器阀侧套管的温度分布。分析了新结构对电场的影响。通过温升试验验证了仿真结果。结果表明：两相闭式热虹吸管可降低阀侧衬套最高温度，显著改善阀侧衬套温度分布均匀性；

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

High Voltage Energy-Energy Engineering and Power Technology

CiteScore

9.60

自引率

27.30%

发文量

审稿时长

21 weeks

期刊介绍： High Voltage aims to attract original research papers and review articles. The scope covers high-voltage power engineering and high voltage applications, including experimental, computational (including simulation and modelling) and theoretical studies, which include: Electrical Insulation ● Outdoor, indoor, solid, liquid and gas insulation ● Transient voltages and overvoltage protection ● Nano-dielectrics and new insulation materials ● Condition monitoring and maintenance Discharge and plasmas, pulsed power ● Electrical discharge, plasma generation and applications ● Interactions of plasma with surfaces ● Pulsed power science and technology High-field effects ● Computation, measurements of Intensive Electromagnetic Field ● Electromagnetic compatibility ● Biomedical effects ● Environmental effects and protection High Voltage Engineering ● Design problems, testing and measuring techniques ● Equipment development and asset management ● Smart Grid, live line working ● AC/DC power electronics ● UHV power transmission Special Issues. Call for papers: Interface Charging Phenomena for Dielectric Materials - https://digital-library.theiet.org/files/HVE_CFP_ICP.pdf Emerging Materials For High Voltage Applications - https://digital-library.theiet.org/files/HVE_CFP_EMHVA.pdf