Partial discharge detection using acoustic camera

Pihera, Josef; Hornak, Jaroslav; Trnka, Pavel; Tureček, Oldřich; Zuzjak, Ladislav; Saksela, Kai; Nyberg, Jonas; Albrecht, R.W.

doi:10.1109/icd46958.2020.9341902

Cited by 4 publications

(2 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, an accurate sensitivity comparison that is based on the PD inception voltage value was not performed. In [ 36 ] it was shown that the sonic camera is also capable of detecting discharges with dc supply.…”

Section: Introductionmentioning

confidence: 99%

Use of DSLR and Sonic Cameras to Detect and Locate High-Voltage Corona Discharges

Ruiz

Bas-Calopa²

2022

Sensors

View full text Add to dashboard Cite

Corona discharges are a concern in high-voltage applications. It is of utmost importance to detect and locate the discharges at an early stage using simple methods for this purpose. This paper evaluates and compares the sensitivity of two methods for detecting and locating the source of discharges, which are based on a digital single-lens reflex (DSLR) camera and a portable wideband sonic camera incorporating a matrix of micro-electromechanical systems (MEMS) microphones. Both cameras can generate an image of the studied area where the discharge sites are identified. The study is carried out with different electrode geometries, 50 Hz alternating current (ac) and positive and negative direct current (dc) supplies, and the effect of the distance between the sensor and the discharge sites is also analyzed. The presented results show that the sonic camera enables fast, simple, and sensitive detection and localization of the source of corona discharges even at a very early stage in daylight conditions, regardless of the type of power supply, that is, ac or positive/negative dc, and at distance of several meters from the discharge source.

show abstract

Section: Introductionmentioning

confidence: 99%

Use of DSLR and Sonic Cameras to Detect and Locate High-Voltage Corona Discharges

Ruiz

Bas-Calopa²

2022

Sensors

View full text Add to dashboard Cite

show abstract

“…Em Hausmann (2019) medições acústicas foram realizadas, tendo como base um sistema ponta-plano para obtenção de DPs e sendo avaliado sob diferentes potenciais elétricos (em regime de corrente contínua), espaçamentos e condições ambientais (limpo, poluído com solução salina e poluído com camada sólida condutiva). Pihera et al (2020) e Suwanasri et al (2021) analisaram as emissões acústicas provocadas por DPs em arranjos de menor complexidade, comparando os resultados obtidos com o método elétrico de detecção de DPs.…”

Section: Introductionunclassified

Medição de Emissões Acústicas Provenientes de Descargas Parciais em Sistema Ponta-Plano e Correlação com o Método Elétrico

Morais

Assis

Nunes

et al. 2022

Proceedings IX Simpósio Brasileiro De Sistemas Elétricos

View full text Add to dashboard Cite

The evaluation of the operating condition of medium and high voltage equipment based on diagnosis of Partial Discharges (PDs), obtained from the measurement of ultrasonic acoustic emissions, has been the object of analysis of many works available in the technical literature. In this sense, this work presents a practical investigation of the occurrence of PDs, detected through acoustic and electrical methods, in a point-flat system subjected to different voltage levels, gaps and environmental conditions. This methodology is adopted to correlate the measured data with the acoustic (unconventional) and electrical (conventional) methods, in order to demonstrate the effectiveness of the former and contribute to obtaining diagnoses with high precision and reliability. The occurrence of PDs signatures, in the time domain for the acoustic and electrical methods, were obtained for the scenarios under analysis, both indicating, with good approximation, the incidence of the phenomenon. The analysis in the frequency domain of the results acquired with the acoustic method also corroborated the diagnosis of PDs in the evaluated scenarios.Resumo: A avaliação da condição de operação de equipamentos de média e alta tensão com base no diagnóstico de Descargas Parciais (DPs), obtidos a partir da medição de emissões acústicas ultrassônicas, vem sendo objeto de pesquisa no Brasil e no exterior. Nesse sentido, este trabalho apresenta os resultados de uma investigação, em laboratório, de DPs detectadas por meio dos métodos acústico e elétrico, em um sistema ponta-plano submetido a diferentes níveis de tensão, espaçamento e condições ambientais. A metodologia apresentada neste artigo foi adotada de modo a favorecer a o estabelecimento de uma correlação entre os dados medidos com os métodos acústico (não convencional) e elétrico (convencional), a fim de demonstrar a efetividade do primeiro e contribuir para a obtenção de diagnósticos com elevada precisão e confiabilidade. As formas de onda de DPs, no domínio do tempo para os métodos acústico e elétrico, foram obtidas para os cenários sob análise, ambos indicando a existência do fenômeno com boa aproximação. Uma análise no domínio da frequência dos sinais aquisitados com o método acústico corroboraram também com os diagnósticos de DPs, para os cenários avaliados.

show abstract

Partial Discharge Measurement for Low- Voltage Motor Insulation Systems at Square Wave Voltage with Variable Slew Rate

Zajadatz,

Wöhr,

Suriyah

et al. 2023

2023 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)

View full text Add to dashboard Cite

Partial discharge detection using acoustic camera

Cited by 4 publications

References 18 publications

Use of DSLR and Sonic Cameras to Detect and Locate High-Voltage Corona Discharges

Use of DSLR and Sonic Cameras to Detect and Locate High-Voltage Corona Discharges

Medição de Emissões Acústicas Provenientes de Descargas Parciais em Sistema Ponta-Plano e Correlação com o Método Elétrico

Partial Discharge Measurement for Low- Voltage Motor Insulation Systems at Square Wave Voltage with Variable Slew Rate

Contact Info

Product

Resources

About