Effect of different types of damping winding structures on the no-load magnetic field of a tubular hydro-generator

• Autorzy: Zheng Qiao-yun , Fan Zhen-nan , Zhou Zhi-ting

Identyfikatory

DOI

10.24425/aee.2025.155959

• Języki publikacji: EN

Abstrakty

EN

The no-load magnetic field of a hydro-generator significantly impacts the quality of its no-load voltage waveform and the grid power quality and power system stability. As a vital element for ensuring the safe and steady operation of hydro-generators, the damping winding structure directly affects the state of the no-load magnetic field. Particularly, horizontal hydro-generators, such as tubular turbine units, feature confined and irregular internal spaces that lead to more intricate and intense distributions of the magnetic field. Therefore, to improve the quality of no-load voltage waveforms, grid power quality, and overall power system stability, it is essential to examine how variations in damping winding structure types affect the no-load magnetic field in these generators. This paper considers a specific 34-MW large tubular turbine generator as an example. A 2D transient electromagnetic field model was developed to investigate the effects of four damping winding structures – fully damped, semi-damped, isolated damping bar, and solid-steel pole – on the magnitude and distribution of the no-load magnetic field, the quality of the no-load voltage waveforms, and the eddy-current losses within the damping system. The research directly supports the design and manufacturing processes of tubular hydro-generators and ensures the safety and stability of generator and power system operations.

Słowa kluczowe

EN

damping winding structure; no-load magnetic field; power quality; tubular hydro-generator

• Wydawca: Polish Academy of Sciences, Committee on Electrical Engineering
• Czasopismo: Archives of Electrical Engineering
• Rocznik: 2025
• Tom: Vol. 74, nr 4
• Strony: 849--868
• Opis fizyczny: Bibliogr. 22 poz., rys., tab., wykr., wz.

Twórcy

autor

Zheng Qiao-yun

• The Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University Chengdu, 610039, China

• https://orcid.org/0009-0000-8013-9528

autor

Fan Zhen-nan

• The Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu, 610039, China
• State Key Laboratory of Power Transmission Equipment & System Security and New Technology Chongqing University, Chongqing, 400030, China

• https://orcid.org/0000-0001-6862-5996

autor

Zhou Zhi-ting

• State Key Laboratory of Power Transmission Equipment & System Security and New Technology Chongqing University, Chongqing, 400030, China

• https://orcid.org/0000-0002-3208-8954

Bibliografia

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