Research on On-Line Detection Method of Transformer Winding Deformation Based on VFTO

At present, the detection of transformer winding deformation faults is carried out in an offline state, which requires the transformer to cooperate with the implementation of planned power outages, or it takes place after the sudden failure of the transformer when it is out of operation. It is diffi...

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Autores principales:	Yanyun Wang, Guoqiong Zhou, Chunping Zeng, Wenbin Zhang, Yanan Ren, Yi Ke, Hequn Chu, Chunguang Suo
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	VFTO frequency response method winding deformation equivalent circuit model online testing Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/85dfeb6cb55349afb0bc89a3c42950ad
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spelling	oai:doaj.org-article:85dfeb6cb55349afb0bc89a3c42950ad2021-11-11T19:18:58ZResearch on On-Line Detection Method of Transformer Winding Deformation Based on VFTO10.3390/s212173861424-8220https://doaj.org/article/85dfeb6cb55349afb0bc89a3c42950ad2021-11-01T00:00:00Zhttps://www.mdpi.com/1424-8220/21/21/7386https://doaj.org/toc/1424-8220At present, the detection of transformer winding deformation faults is carried out in an offline state, which requires the transformer to cooperate with the implementation of planned power outages, or it takes place after the sudden failure of the transformer when it is out of operation. It is difficult to obtain the status information of the windings online in time. Since the transformer will suffer very fast transient overvoltage (VFTO) impact during operation, combined with the principle of the frequency response method, an online detection method of transformer winding deformation based on VFTO is proposed. In order to study the frequency response characteristics of transformer winding under the impact of VFTO, the generation process of VFTO is simulated by simulation software, and the equivalent circuit model of transformer winding before and after deformation is established. The VFTO signal is injected into the transformer circuit model as an excitation source, and the changes of resonant frequencies of frequency response curve under different deformation types and different deformation degrees of winding are analyzed. The simulation results show that the frequency response curves of different winding deformation types are different. Different deformation degrees are simulated by increasing the radial capacitance by 4%, 13%, and 23%, series inductance by 2%, 4%, and 6%, and longitudinal capacitance by 3%, 6%, and 9%, and the change of resonance frequencies can comprehensively reflect the deformation information of winding. At the same time, the tests of different deformation types and deformation degrees of the simulated winding are carried out. The results show that with the deepening of the change degree of the simulated fault inductance value, the frequency response curve shifts to the low-frequency direction, confirming the feasibility of the online detection method of transformer winding deformation based on VFTO.Yanyun WangGuoqiong ZhouChunping ZengWenbin ZhangYanan RenYi KeHequn ChuChunguang SuoMDPI AGarticleVFTOfrequency response methodwinding deformationequivalent circuit modelonline testingChemical technologyTP1-1185ENSensors, Vol 21, Iss 7386, p 7386 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	VFTO frequency response method winding deformation equivalent circuit model online testing Chemical technology TP1-1185
spellingShingle	VFTO frequency response method winding deformation equivalent circuit model online testing Chemical technology TP1-1185 Yanyun Wang Guoqiong Zhou Chunping Zeng Wenbin Zhang Yanan Ren Yi Ke Hequn Chu Chunguang Suo Research on On-Line Detection Method of Transformer Winding Deformation Based on VFTO
description	At present, the detection of transformer winding deformation faults is carried out in an offline state, which requires the transformer to cooperate with the implementation of planned power outages, or it takes place after the sudden failure of the transformer when it is out of operation. It is difficult to obtain the status information of the windings online in time. Since the transformer will suffer very fast transient overvoltage (VFTO) impact during operation, combined with the principle of the frequency response method, an online detection method of transformer winding deformation based on VFTO is proposed. In order to study the frequency response characteristics of transformer winding under the impact of VFTO, the generation process of VFTO is simulated by simulation software, and the equivalent circuit model of transformer winding before and after deformation is established. The VFTO signal is injected into the transformer circuit model as an excitation source, and the changes of resonant frequencies of frequency response curve under different deformation types and different deformation degrees of winding are analyzed. The simulation results show that the frequency response curves of different winding deformation types are different. Different deformation degrees are simulated by increasing the radial capacitance by 4%, 13%, and 23%, series inductance by 2%, 4%, and 6%, and longitudinal capacitance by 3%, 6%, and 9%, and the change of resonance frequencies can comprehensively reflect the deformation information of winding. At the same time, the tests of different deformation types and deformation degrees of the simulated winding are carried out. The results show that with the deepening of the change degree of the simulated fault inductance value, the frequency response curve shifts to the low-frequency direction, confirming the feasibility of the online detection method of transformer winding deformation based on VFTO.
format	article
author	Yanyun Wang Guoqiong Zhou Chunping Zeng Wenbin Zhang Yanan Ren Yi Ke Hequn Chu Chunguang Suo
author_facet	Yanyun Wang Guoqiong Zhou Chunping Zeng Wenbin Zhang Yanan Ren Yi Ke Hequn Chu Chunguang Suo
author_sort	Yanyun Wang
title	Research on On-Line Detection Method of Transformer Winding Deformation Based on VFTO
title_short	Research on On-Line Detection Method of Transformer Winding Deformation Based on VFTO
title_full	Research on On-Line Detection Method of Transformer Winding Deformation Based on VFTO
title_fullStr	Research on On-Line Detection Method of Transformer Winding Deformation Based on VFTO
title_full_unstemmed	Research on On-Line Detection Method of Transformer Winding Deformation Based on VFTO
title_sort	research on on-line detection method of transformer winding deformation based on vfto
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/85dfeb6cb55349afb0bc89a3c42950ad
work_keys_str_mv	AT yanyunwang researchononlinedetectionmethodoftransformerwindingdeformationbasedonvfto AT guoqiongzhou researchononlinedetectionmethodoftransformerwindingdeformationbasedonvfto AT chunpingzeng researchononlinedetectionmethodoftransformerwindingdeformationbasedonvfto AT wenbinzhang researchononlinedetectionmethodoftransformerwindingdeformationbasedonvfto AT yananren researchononlinedetectionmethodoftransformerwindingdeformationbasedonvfto AT yike researchononlinedetectionmethodoftransformerwindingdeformationbasedonvfto AT hequnchu researchononlinedetectionmethodoftransformerwindingdeformationbasedonvfto AT chunguangsuo researchononlinedetectionmethodoftransformerwindingdeformationbasedonvfto
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Research on On-Line Detection Method of Transformer Winding Deformation Based on VFTO

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