METHOD FOR DETERMINING THE ACTUAL PRESSURE VALUE IN A MV VACUUM INTERRUPTER


Abstract

The paper describes the author's method for determining the actual pressure value in a vacuum interrupter of a MV disconnector during high-voltage laboratory tests. The need to develop such a method was due to the lack of possibility to measure the pressure directly in the vacuum interrupter during the tests. There was a risk of damaging the vacuum gauge as a result of an electrical jump. The proposed method consists in measuring, in de-energized conditions, the difference in pressure between a set of vacuum pumps and a prototype vacuum interrupter made for the purpose of implementing this method. Thus, knowing the pressure value at the pumps and having the scaling characteristics of the system determined, it will be possible to determine the actual pressure inside the tested MV disconnecting extinguishing interrupter during high-voltage tests. Measurements of pressure drop in the pumping channel were carried out for air and three electro-negative gases: helium, argon and neon, used in the study by the authors of this paper.


Keywords

vacuum switchgears; vacuum technology; vacuum systems; pressure measurement

Konarski M., Węgierek P.: The use of power restoration systems for automation of medium voltage distribution grid. Przegląd Elektrotechniczny 7/2018, 167–172. DOI: https://doi.org/10.15199/48.2018.07.42

Kyoto Protocol to the UN Framework Convention on Climate Change. Kyoto 1997.

Lech M.: Disassemblable vacuum interrupter as an innovative test stand designed for research on improving the operational parameters of power switching apparatus. Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska – IAPGOS 3/2020, 66–69. DOI: https://doi.org/10.35784/iapgos.1922

Leybold company data sheets.

Ordinance of the Minister of Economy of 4 May 2007 on detailed conditions of the power system operations.

Power engineering, distribution and transmission, Polish Power Transmission and Distribution Association’s Report, Poznań, 2020.

Quality Regulation 2018 – 2025 for Distribution System Operators.

Regulation (EU) No 517/2014 of the European Parliament and of the Council of 16 April 2014 on fluorinated greenhouse gases.

Slade P. G.: The Vacuum Interrupter Theory, Design, and Application, CRC Press 2007. DOI: https://doi.org/10.1201/9781420008593

Węgierek P., Lech M.: Test stand for testing and diagnostics of medium voltage vacuum interrupters. Przegląd Elektrotechniczny 2/2021, 176–179. DOI: https://doi.org/10.15199/48.2021.02.36

Węgierek P., Staszak S., Pastuszak J.: EKTOS – innovative medium voltage outdoor vacuum disconnector in a closed housing dedicated to the Network smart grids. Wiadomości Elektrotechniczne 11/2019, 21–25.

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Published : 2021-03-31


Lech, M., & Kostyła, D. (2021). METHOD FOR DETERMINING THE ACTUAL PRESSURE VALUE IN A MV VACUUM INTERRUPTER. Informatyka, Automatyka, Pomiary W Gospodarce I Ochronie Środowiska, 11(1), 28-31. https://doi.org/10.35784/iapgos.2581

Michał Lech  m.lech@pollub.pl
Lublin University of Technology, Faculty of Electrical Engineering and Computer Science  Poland
https://orcid.org/0000-0002-4732-2459
Damian Kostyła 
Lublin University of Technology, Faculty of Electrical Engineering and Computer Science  Poland
http://orcid.org/0000-0002-9012-0158