Localization techniques of partial discharges at cable ends in off-line single-sided partial discharge cable measurements

Mor, Armando Rodrigo; Morshuis, P.H.F.; Llovera, P.; Fuster, Vicente Domingo Estruch; Quijano, Alfredo

doi:10.1109/tdei.2015.005395

Cited by 31 publications

(17 citation statements)

References 11 publications

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“…Para a localização de DPs nas pontas de cabos é possível utilizar sensores de DP capacitivamente acoplados, ao invés de HFCTs. A utilização de tais sensores, juntamente com o método TDR, permite uma localização precisa de DPs em testes realizados offline, como apresentado por Mor, et al (2016).…”

Section: Localização Das Descargas Parciaisunclassified

Diagnóstico e Monitoramento de Cabos Isolados através da Análise de Descargas Parciais: O Estado da Arte

Ribeiro

Paula

2020

Anais Do Congresso Brasileiro De Automática 2020

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Este trabalho apresenta uma ampla e minuciosa revisão bibliográfica sobre a avaliação de descargas parciais para o diagnóstico e monitoramento do estado da isolação de cabos de média e alta tensão. Todos os possíveis métodos de detecção da atividade de descargas parciais, com os respectivos sensores adequados para cada situação, são discutidos de forma a explicitar suas vantagens, limitações e aplicações. É apresentada também uma avaliação dos métodos e parâmetros utilizados no tratamento dos dados de medição e discutido como os mesmos influenciam na distinção entre os sinais associados a descargas parciais e ruídos externos do sistema. Por fim, de forma ilustrar a aplicação das técnicas discutidas, são apresentados relatos de casos encontrados na literatura nos quais foram empregadas metodologias de monitoramento baseadas no controle dos níveis de descargas parciais em cabos isolados e adotadas estratégias de manutenção baseadas nesse princípio.

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Section: Localização Das Descargas Parciaisunclassified

Diagnóstico e Monitoramento de Cabos Isolados através da Análise de Descargas Parciais: O Estado da Arte

Ribeiro

Paula

2020

Anais Do Congresso Brasileiro De Automática 2020

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“…Mostly used for transmission of electrical power, power cables are also used under variety of electrical, mechanical and environmental conditions [1]. Partial discharge (PD) analysis is important to assess and evaluate the insulation state of high voltage equipment under service in order to determine the severity of degradation [2][3][4][5]. PD is a phenomenon where a breakdown process of a small area of an insulation, which is subjected to high voltage occurs.…”

Section: Introductionmentioning

confidence: 99%

Partial discharge detection device using ultrasonic sensor on medium voltage XLPE cable

Radzi

Nik

Rameli

et al. 2020

IJEECS

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There are many methods that have been studied by earlier researchers in order to detect the acoustic properties of Partial Discharge (PD) emitted by PD sources. One of the methods known as ultrasonic sensing on medium voltage Cross-Linked Polyethylene (XLPE) cable was adopted to detect partial discharges on commercial applications, usually by using Acoustic Emission (AE) sensors. This paper presents the processes of designing a PD sensor to detect the acoustic properties of the partial discharges on medium voltage XLPE cable. This PD sensor method works by detecting the partial discharges occurred at the joint of the cable which can act as an early warning device to help minimize the repair and maintenance costs of degrading cable. Result of the experiment shows the complete design of the prototype device, the device after fabrication and the functionality of the device. This design of the prototype can be beneficial for future uses in designing cost efficient and smaller sized PD detection devices. By positioning the sensor in horizontal position directly to the source of PD on the cable, the sensor will be able to detect acoustic properties of PD, by picking up the frequencies beyond 40 kHz. By varying the voltage applied values, a design of experiment (DOE) is carried out accordingly. Result of the experiment shows that the prototype device is functioning as expected, and hence this finding will be very useful to the consumers of power industries as the sensor device can serve as an alternative device to the commercialized PD sensing devices which are bulky and expensive.

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“…One notable limitation of this system is that the PD localisation algorithm used is mainly based on the time difference of the electromagnetic wave signal, i.e. the time difference‐of‐arrival (TDOA), which requires a high‐sampling rate (GSa/s) and high time synchronisation accuracy (ns) [11–13]. Correspondingly, the high cost and large size of commercial systems limit its field application.…”

Section: Introductionmentioning

confidence: 99%

Partial discharge direction‐of‐arrival estimation in air‐insulated substation by UHF wireless array and RSSI maximum likelihood estimator

Han

Luo

Sheng

et al. 2020

IET Generation, Transmission & Distribution

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The quick detection and localization of partial discharge (PD) in an air-insulated substation (AIS) based on ultrahigh-frequency (UHF) sensor arrays are efficient for power equipment monitoring. The adopted UHF PD time difference of arrival (TDOA) methods mainly use the time difference of electromagnetic wave signals. Thus, the system requires both a high sampling rate and time synchronization accuracy, leading to a high cost and large size. In this study, the feasibility and accuracy of PD DOA in an AIS were investigated using a UHF wireless sensor array and the received signal strength indicator. First, the power pattern of the designed UHF wireless sensor array was obtained via an offline experiment. Then, a statistical approach to the PD DOA method based on the maximum likelihood estimator was employed to obtain the preliminary DOA result. Finally, interpolation and clustering algorithms were used to improve the accuracy of the DOA. A laboratory test was conducted. The average error of the PD DOA was less than 6°, and the cost-effectiveness and portability were clearly improved.

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Localization techniques of partial discharges at cable ends in off-line single-sided partial discharge cable measurements

Cited by 31 publications

References 11 publications

Diagnóstico e Monitoramento de Cabos Isolados através da Análise de Descargas Parciais: O Estado da Arte

Diagnóstico e Monitoramento de Cabos Isolados através da Análise de Descargas Parciais: O Estado da Arte

Partial discharge detection device using ultrasonic sensor on medium voltage XLPE cable

Partial discharge direction‐of‐arrival estimation in air‐insulated substation by UHF wireless array and RSSI maximum likelihood estimator

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