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Energies
Volume 15
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10.3390/en15082791
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Article

Ferro-Resonance Analysis of Capacitor Voltage Transformer with Fast Saturation Damper

by
Xinzhi Ding
1,2,
Kai Yang
1,*,
Weiyu Wang
1,*,
Bin Liu
3,
Xuejin Wang
3,
Jie Zhang
3 and
Dayi Li
1
1
School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
2
Yunnan Electric Power Test and Research Institute (Group) Co., Ltd., Kunming 650217, China
3
Bureau of Yunnan Power Grid Co., Ltd., Kunming 650217, China
*
Authors to whom correspondence should be addressed.
Energies 2022, 15(8), 2791; https://doi.org/10.3390/en15082791
Submission received: 22 February 2022 / Revised: 16 March 2022 / Accepted: 5 April 2022 / Published: 11 April 2022
(This article belongs to the Special Issue Advanced Technologies in Power Quality and Solutions)
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Abstract

With the increase in capacitor voltage transformer (CVT) operation life, CVT impedance changes, and the short-time switching of overhead lines, it is very easy to cause a transient oscillation accident in which a CVT participates, reduce the insulation level of a CVT, and even induce regional power grid oscillation and easily cause capacitor breakdown, after long-term operation with defects. In this paper, the whole power network, including the generator, power grid, and consumer, is modeled, and the theoretical model of the CVT ferro-resonance connected grid is built. The frequency spectrum analysis, and the measurements of resonance bus voltage and line voltage, were carried out to find the design method of a fast saturation damper (FSD) and its voltage–current characteristics that affect the vibration, based on theory and practice; this paper puts forward effective measures to reduce the resonance effect of a CVT in operation, and avoid the oscillation of the line and even the regional power grid system.
Keywords: fast saturation damper; ferromagnetic resonance; capacitor voltage transformer; mechanism; harmonic fast saturation damper; ferromagnetic resonance; capacitor voltage transformer; mechanism; harmonic

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MDPI and ACS Style

Ding, X.; Yang, K.; Wang, W.; Liu, B.; Wang, X.; Zhang, J.; Li, D. Ferro-Resonance Analysis of Capacitor Voltage Transformer with Fast Saturation Damper. Energies 2022, 15, 2791. https://doi.org/10.3390/en15082791

AMA Style

Ding X, Yang K, Wang W, Liu B, Wang X, Zhang J, Li D. Ferro-Resonance Analysis of Capacitor Voltage Transformer with Fast Saturation Damper. Energies. 2022; 15(8):2791. https://doi.org/10.3390/en15082791

Chicago/Turabian Style

Ding, Xinzhi, Kai Yang, Weiyu Wang, Bin Liu, Xuejin Wang, Jie Zhang, and Dayi Li. 2022. "Ferro-Resonance Analysis of Capacitor Voltage Transformer with Fast Saturation Damper" Energies 15, no. 8: 2791. https://doi.org/10.3390/en15082791

APA Style

Ding, X., Yang, K., Wang, W., Liu, B., Wang, X., Zhang, J., & Li, D. (2022). Ferro-Resonance Analysis of Capacitor Voltage Transformer with Fast Saturation Damper. Energies, 15(8), 2791. https://doi.org/10.3390/en15082791

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