Stator temperature rise of synchronous condenser affected by temperature variation at rotor airflow outlet

IF 5 2区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Electrical Power & Energy Systems Pub Date : 2025-05-21 DOI:10.1016/j.ijepes.2025.110772

Guorui Xu , Yin Wang , Zhiqiang Li , Yang Xiao

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引用次数: 0

Abstract

The fluid and temperature distributions of the large air-cooled Synchronous Condenser (SC) are very complex, thereby the interaction of the stator and rotor airflows is often neglected in the previous study of the temperature field. In order to calculate the precise temperature rise of the SC under different operating conditions, this paper studies the effect of the temperature variation at the rotor airflow outlet on the stator temperature distribution. The loss, fluid and temperature distributions of a 300-MVar air-cooled SC are calculated based on the electromagnetic, fluid and heat transfer models. The temperature variation at the rotor airflow outlet along with the operating condition is revealed, and its effect on the stator temperature rise is analyzed. Further, it is studied that the variation laws of the stator and rotor maximum temperatures along with the air volume allocation, and the optimal air volume allocation is determined. The results can provide the reference for the accurate temperature calculation and the optimization design of the cooling systems for the large air-cooled SCs.

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同步冷凝器定子温升受转子气流出口温度变化的影响

大型风冷同步冷凝器（SC）的流体和温度分布非常复杂，因此在以往的温度场研究中往往忽略了定子和转子气流的相互作用。为了精确计算出SC在不同工况下的温升，本文研究了转子气流出口温度变化对定子温度分布的影响。基于电磁、流体和传热模型，计算了300 mvar风冷SC的损耗、流体和温度分布。揭示了转子气流出口温度随运行工况的变化规律，分析了其对定子温升的影响。进一步研究了定子、转子最高温度随风量分配的变化规律，确定了最优风量分配。研究结果可为大型风冷式燃气轮机的精确温度计算和冷却系统的优化设计提供参考。

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

International Journal of Electrical Power & Energy Systems 工程技术-工程：电子与电气

CiteScore

12.10

自引率

17.30%

发文量

1022

审稿时长

51 days

期刊介绍： The journal covers theoretical developments in electrical power and energy systems and their applications. The coverage embraces: generation and network planning; reliability; long and short term operation; expert systems; neural networks; object oriented systems; system control centres; database and information systems; stock and parameter estimation; system security and adequacy; network theory, modelling and computation; small and large system dynamics; dynamic model identification; on-line control including load and switching control; protection; distribution systems; energy economics; impact of non-conventional systems; and man-machine interfaces. As well as original research papers, the journal publishes short contributions, book reviews and conference reports. All papers are peer-reviewed by at least two referees.