A partial discharge detection method for SF6 insulated inverted current transformers adopting inner shield case as UHF sensor

Junhao Li; Xuanrui Zhang; Xutao Han; Xiu Yao

doi:10.1109/TPWRD.2018.2807982

A partial discharge detection method for SF₆ insulated inverted current transformers adopting inner shield case as UHF sensor

Junhao Li
, Xuanrui Zhang
, Xutao Han
, Xiu Yao

Department of Electrical Engineering

University at Buffalo

Xi'an Jiaotong University

Research output: Contribution to journal › Article › peer-review

39 Scopus citations

Abstract

A partial discharge (PD) detection method for SF₆ insulated inverted current transformers (SIICTs) adopting an inner shield case as an ultra-high frequency (UHF) sensor is proposed in this paper. The inner shield case is a component of the SIICT. Its structure is similar to that of an antenna and can be used as a UHF sensor to measure the PD UHF signal. A 110 kV current transformer is used as an experimental object and the voltage standing-wave ratio of the inner shield case is calculated. The validity and sensitivity of this method are proved by experiments with ac voltage. This PD detection method solves the problem that the UHF sensor is difficult to mount inside current transformers and provides a novel method for PD detection of SIICTs.

Original language	English
Article number	8295142
Pages (from-to)	3237-3239
Number of pages	3
Journal	IEEE Transactions on Power Delivery
Volume	33
Issue number	6
DOIs	https://doi.org/10.1109/TPWRD.2018.2807982
State	Published - Dec 2018

Keywords

Partial discharges
UHF
gas insulated inverted current transformers
live detection
shield case

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10.1109/TPWRD.2018.2807982

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title = "A partial discharge detection method for SF6 insulated inverted current transformers adopting inner shield case as UHF sensor",

abstract = "A partial discharge (PD) detection method for SF6 insulated inverted current transformers (SIICTs) adopting an inner shield case as an ultra-high frequency (UHF) sensor is proposed in this paper. The inner shield case is a component of the SIICT. Its structure is similar to that of an antenna and can be used as a UHF sensor to measure the PD UHF signal. A 110 kV current transformer is used as an experimental object and the voltage standing-wave ratio of the inner shield case is calculated. The validity and sensitivity of this method are proved by experiments with ac voltage. This PD detection method solves the problem that the UHF sensor is difficult to mount inside current transformers and provides a novel method for PD detection of SIICTs.",

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author = "Junhao Li and Xuanrui Zhang and Xutao Han and Xiu Yao",

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AU - Li, Junhao

AU - Zhang, Xuanrui

AU - Han, Xutao

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PY - 2018/12

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AB - A partial discharge (PD) detection method for SF6 insulated inverted current transformers (SIICTs) adopting an inner shield case as an ultra-high frequency (UHF) sensor is proposed in this paper. The inner shield case is a component of the SIICT. Its structure is similar to that of an antenna and can be used as a UHF sensor to measure the PD UHF signal. A 110 kV current transformer is used as an experimental object and the voltage standing-wave ratio of the inner shield case is calculated. The validity and sensitivity of this method are proved by experiments with ac voltage. This PD detection method solves the problem that the UHF sensor is difficult to mount inside current transformers and provides a novel method for PD detection of SIICTs.

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KW - UHF

KW - gas insulated inverted current transformers

KW - live detection

KW - shield case

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A partial discharge detection method for SF₆ insulated inverted current transformers adopting inner shield case as UHF sensor

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Keywords

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