Effect of selected parameters on the electrical strength of a high-voltage vacuum insulation system

• Autorzy: Lech Michał , Węgierek Paweł

Identyfikatory

DOI

10.24425/aee.2023.146039

• Języki publikacji: EN

Abstrakty

EN

The article presents the results of laboratory measurements of 𝑈𝑑 breakdown voltages in a high-voltage vacuum insulating system for different pressures, contact gaps, type of electrode contacts and type of residual gas inside the discharge chamber. First of all, the electrical strength of the discharge chamber with a contact system terminated with contact pads made of W₇₀Cu₃₀ and Cu₇₅Cr₂₅ material was compared for selected values of contact gaps. It was found that below a pressure of 𝑝 = 3.0×10^-1 Pa the electrical strength reaches an approximately constant value for each of the set contact gaps 𝑑. Analytical relationships were determined to calculate this value for each of the contact pads used. Above a pressure of 𝑝 = 3.0×10^-1 Pa, the measured values of 𝑈_d breakdown voltages decrease sharply. The values of breakdown voltages in the discharge chamber with residual gases in the form of air, argon, neon and helium were also determined for selected values of contact gaps 𝑑. Depending on the residual gases used, significant differences were noted in the values of pressure 𝑝 at which the loss of insulating properties in the discharge chamber occurred. These values were 3.3 × 10^-1 Pa for argon, 4.1 × 10^-1 Pa for air, 6.4 × 10^-1 Pa for neon, and 2.55 × 10⁰ Pa for helium, respectively.

Słowa kluczowe

EN

electrical breakdown; electrical contacts; electrical strength; switchgear; vacuum insulation

• Wydawca: Polish Academy of Sciences, Committee on Electrical Engineering
• Czasopismo: Archives of Electrical Engineering
• Rocznik: 2023
• Tom: Vol. 72, nr 3
• Strony: 597--611
• Opis fizyczny: Bibliogr. 30 poz., fot., rys, tab.

Twórcy

autor

Lech Michał

• Faculty of Electrical Engineering and Computer Science, Lublin University of Technology Nadbystrzycka 38A str., 20-618 Lublin, Poland

• https://orcid.org/0000-0002-4732-2459

autor

Węgierek Paweł

• Faculty of Electrical Engineering and Computer Science, Lublin University of Technology Nadbystrzycka 38A str., 20-618 Lublin, Poland

• https://orcid.org/0000-0002-0812-3414

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).