A new approach to predictive maintenance of high voltage switching devices

Lazarescu, Emil; Frigura-Iliasa, Flaviu Mihai; Frigura-Iliasa, Mihaela; Andea, Petru; Vatau, Doru

doi:10.1109/epe.2017.7967303

Cited by 3 publications

(2 citation statements)

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“…Most of the existing predictive maintenance activities are carried out using complex technologies such as thermography, vibration analysis, ultrasonic analysis etc. Since these measurements should be analysed using different software, the necessity of a device which indicates the condition of an electrical panel board was risen (Lazarescu & Andea, 2017). Some of the characteristics of this device include,…”

Section: Maintenance Of LV Switchgear and Controlgear Assembliesmentioning

confidence: 99%

Assessing the service condition of an electrical panel board

Surawimala¹,

Ekanayake²

2019

Ceylon J. Sci.

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Electrical panel boards are used to locate controlling, measuring and metering devices which are used in electrical power distribution. It is a customised product which is used for a specific purpose. The proper functioning of an electrical panel board can be ensured by properly maintaining it. Normally, it will be routine maintenance which will be performed once a year or half a year. But it is essential to know the service condition of an electrical panel board to avoid failures and perform the maintenance activity where it is necessary. This research presents a method to assess the service condition of an electrical panel board. Initially, the importance of the temperature, humidity and number of operations of a circuit breaker is highlighted by referring to the international standards such as IEC 61439-1 and IEC TR 60890. Field measurements of a selected sample space were used to evaluate the condition of panel boards against the above standards by considering the age of the electrical panel board and its maintenance status. These measurements were statistically analysed, and a device called Service Condition Analyser (SCA) was fabricated and tested under laboratory conditions. It was observed that under the stressed conditions, an upward trend of the service status was shown by the SCA.

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Section: Maintenance Of LV Switchgear and Controlgear Assembliesmentioning

confidence: 99%

Assessing the service condition of an electrical panel board

Surawimala¹,

Ekanayake²

2019

Ceylon J. Sci.

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“…The reliability of the electricity distribution system requires the proper functioning of voltage regulators to guarantee the operability of the system [2][3][4]. Thereafter, the voltage regulator requires the adoption of more efficient preventive maintenance measures to ensure better system performance and reliability and equipment life [5][6][7]. A voltage regulator is basically composed of: tap changer, transformer, insulating oil, control module, housing, and support hardware.…”

Section: Introductionmentioning

confidence: 99%

“In Situ” Evaluation of Mechanical Wear of Mobile Contacts of Electricity Voltage Regulator

et al. 2020

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This in situ study presents an analysis of the wear of mobile contacts of switching in an automatic line voltage regulator, regarding the surface wear of the contacts. It is interesting to analyze the contacts of this equipment due to the friction and wear generated during the contact change, in order to predict and contain mechanical operation failures. The contacts were evaluated for mass loss, profilometry, and analysis in a scanning electron microscope, after remaining in operation in the regulator for about one year and switching the contacts almost 2500 times. This study aims to evaluate the performance of the contacts, in terms of surface wear, correlating the number of switching and the effects generated on the contacts in terms of loss of mass and surface damage. With the results obtained, it is possible to conclude that with each switching maneuver the mobile contact loses about 0.002895% of its initial mass. In addition, there was a change in the topography of the sample, associated with its wear, suggesting that the wear is different along the surface of the regulator contacts studied.

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