Development of main transformer winding deformation detection instrument based on sweeping impedance method

Guannan Zhao; Jiyao Chen; Xinzhen Li; Zhanning Zhi

doi:10.1117/12.3004312

25 September 2023 Development of main transformer winding deformation detection instrument based on sweeping impedance method

Guannan Zhao, Jiyao Chen, Xinzhen Li, Zhanning Zhi

Author Affiliations +

Proceedings Volume 12788, Second International Conference on Energy, Power, and Electrical Technology (ICEPET 2023); 127882X (2023) https://doi.org/10.1117/12.3004312
Event: Second International Conference on Energy, Power, and Electrical Technology (ICEPET 2023), 2023, Kuala Lumpur, Malaysia

Abstract

Due to the lack of effective analysis of the short-circuit impedance curve in the main transformer winding deformation detection, the detection results are poor. Therefore, a method for developing a main transformer winding deformation detector based on swept frequency impedance method is proposed. Firstly, by combining power electronics and pulse power technology, a novel nanosecond pulse generator capable of outputting high voltage and stable repetition rate is proposed. Optoelectronic signals are selected as transmission signals to improve response speed and anti-interference ability, and the hardware circuit of the instrument is designed and optimized; Then, the frequency sweep impedance method is used to obtain and analyze the frequency sweep impedance curve and short-circuit impedance value of the transformer, reducing the detection error. The winding deformation detection is completed by comparing the changes before and after the transformer has a short-circuit fault. The results show that the standard deviation of the sweep impedance value of the main transformer winding deformation detector developed using this method is small and the detection accuracy is high.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Guannan Zhao, Jiyao Chen, Xinzhen Li, and Zhanning Zhi "Development of main transformer winding deformation detection instrument based on sweeping impedance method", Proc. SPIE 12788, Second International Conference on Energy, Power, and Electrical Technology (ICEPET 2023), 127882X (25 September 2023); https://doi.org/10.1117/12.3004312

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