Effect of voltage reduction in minimising partial discharge activity in cables – experimental study

Wah Hoon Siew, Faisal Peer Mohamed, Bojie Sheng, Brian Stewart

Research output: Contribution to conferencePoster

Abstract

A common cause of insulation degradation in high voltage (HV) cables is due to partial discharges (PD). PD may be initiated through imperfections and contaminants present in the insulation. It can be hypothesized that a reduction in system voltage can potentially reduce PD, which will correspondingly extend the service life of the cable. Currently, industry voltage statutory requirements permit ±6% tolerance setting on nominal voltage on distribution networks. Such ±6% voltage reduction on may have little or adverse effect on PD magnitude which depends on the nature of defect. Hence, the accuracy and type of measuring PD while reducing system voltage is more critical for this application. Power cable as a low pass filter which attenuates and disperse the PD pulses. In this paper, effect of voltage reduction on PD is investigated using standard electrode geometries such as point-plane, point-point and point- rod using IEC60270 measurement system together with frequency domain measurements. It has been observed that PD frequency characteristics at different voltages varies in the wideband frequency spectrum.

Conference

Conference2017 IEEE Conference on Electrical Insulation & Dielectric Phenomenon
Abbreviated titleCEIDP
CountryUnited States
CityFort Worth
Period22/10/1725/10/17
Internet address

Fingerprint

Partial discharges
Cables
Electric potential
Insulation
Defects
Low pass filters
Electric power distribution
Service life
Impurities
Degradation
Electrodes
Geometry

Cite this

Siew, W. H., Peer Mohamed, F., Sheng, B., & Stewart, B. (2017). Effect of voltage reduction in minimising partial discharge activity in cables – experimental study. Poster session presented at 2017 IEEE Conference on Electrical Insulation & Dielectric Phenomenon , Fort Worth, United States.
Siew, Wah Hoon ; Peer Mohamed, Faisal ; Sheng, Bojie ; Stewart, Brian. / Effect of voltage reduction in minimising partial discharge activity in cables – experimental study. Poster session presented at 2017 IEEE Conference on Electrical Insulation & Dielectric Phenomenon , Fort Worth, United States.
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title = "Effect of voltage reduction in minimising partial discharge activity in cables – experimental study",
abstract = "A common cause of insulation degradation in high voltage (HV) cables is due to partial discharges (PD). PD may be initiated through imperfections and contaminants present in the insulation. It can be hypothesized that a reduction in system voltage can potentially reduce PD, which will correspondingly extend the service life of the cable. Currently, industry voltage statutory requirements permit ±6{\%} tolerance setting on nominal voltage on distribution networks. Such ±6{\%} voltage reduction on may have little or adverse effect on PD magnitude which depends on the nature of defect. Hence, the accuracy and type of measuring PD while reducing system voltage is more critical for this application. Power cable as a low pass filter which attenuates and disperse the PD pulses. In this paper, effect of voltage reduction on PD is investigated using standard electrode geometries such as point-plane, point-point and point- rod using IEC60270 measurement system together with frequency domain measurements. It has been observed that PD frequency characteristics at different voltages varies in the wideband frequency spectrum.",
author = "Siew, {Wah Hoon} and {Peer Mohamed}, Faisal and Bojie Sheng and Brian Stewart",
year = "2017",
month = "10",
day = "22",
language = "English",
note = "2017 IEEE Conference on Electrical Insulation & Dielectric Phenomenon , CEIDP ; Conference date: 22-10-2017 Through 25-10-2017",
url = "http://ceidp.org/",

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Siew, WH, Peer Mohamed, F, Sheng, B & Stewart, B 2017, 'Effect of voltage reduction in minimising partial discharge activity in cables – experimental study' 2017 IEEE Conference on Electrical Insulation & Dielectric Phenomenon , Fort Worth, United States, 22/10/17 - 25/10/17, .

Effect of voltage reduction in minimising partial discharge activity in cables – experimental study. / Siew, Wah Hoon; Peer Mohamed, Faisal; Sheng, Bojie; Stewart, Brian.

2017. Poster session presented at 2017 IEEE Conference on Electrical Insulation & Dielectric Phenomenon , Fort Worth, United States.

Research output: Contribution to conferencePoster

TY - CONF

T1 - Effect of voltage reduction in minimising partial discharge activity in cables – experimental study

AU - Siew, Wah Hoon

AU - Peer Mohamed, Faisal

AU - Sheng, Bojie

AU - Stewart, Brian

PY - 2017/10/22

Y1 - 2017/10/22

N2 - A common cause of insulation degradation in high voltage (HV) cables is due to partial discharges (PD). PD may be initiated through imperfections and contaminants present in the insulation. It can be hypothesized that a reduction in system voltage can potentially reduce PD, which will correspondingly extend the service life of the cable. Currently, industry voltage statutory requirements permit ±6% tolerance setting on nominal voltage on distribution networks. Such ±6% voltage reduction on may have little or adverse effect on PD magnitude which depends on the nature of defect. Hence, the accuracy and type of measuring PD while reducing system voltage is more critical for this application. Power cable as a low pass filter which attenuates and disperse the PD pulses. In this paper, effect of voltage reduction on PD is investigated using standard electrode geometries such as point-plane, point-point and point- rod using IEC60270 measurement system together with frequency domain measurements. It has been observed that PD frequency characteristics at different voltages varies in the wideband frequency spectrum.

AB - A common cause of insulation degradation in high voltage (HV) cables is due to partial discharges (PD). PD may be initiated through imperfections and contaminants present in the insulation. It can be hypothesized that a reduction in system voltage can potentially reduce PD, which will correspondingly extend the service life of the cable. Currently, industry voltage statutory requirements permit ±6% tolerance setting on nominal voltage on distribution networks. Such ±6% voltage reduction on may have little or adverse effect on PD magnitude which depends on the nature of defect. Hence, the accuracy and type of measuring PD while reducing system voltage is more critical for this application. Power cable as a low pass filter which attenuates and disperse the PD pulses. In this paper, effect of voltage reduction on PD is investigated using standard electrode geometries such as point-plane, point-point and point- rod using IEC60270 measurement system together with frequency domain measurements. It has been observed that PD frequency characteristics at different voltages varies in the wideband frequency spectrum.

UR - http://ceidp.org/

M3 - Poster

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Siew WH, Peer Mohamed F, Sheng B, Stewart B. Effect of voltage reduction in minimising partial discharge activity in cables – experimental study. 2017. Poster session presented at 2017 IEEE Conference on Electrical Insulation & Dielectric Phenomenon , Fort Worth, United States.