Improving sensitivity of residual current transformers to high frequency earth fault currents

• Autorzy: Czapp S. , Dobrzyński K. , Klucznik J. , Lubosny Z. , Kowalak R.

Identyfikatory

DOI

10.1515/aee-2017-0036

• Języki publikacji: EN

Abstrakty

EN

For protection against electric shock in low voltage systems residual current devices are commonly used. However, their proper operation can be interfered when high frequency earth fault current occurs. Serious hazard of electrocution exists then. In order to detect such a current, it is necessary to modify parameters of residual current devices, especially the operating point of their current transformer. The authors proposed the modification in the structure of residual current devices. This modification improves sensitivity of residual current devices when high frequency earth fault current occurs. The test of the modified residual current device proved that the authors’ proposition is appropriate.

Słowa kluczowe

EN

current transformers; earth fault currents; electric devices; electromagnetic coupling; high frequency

• Wydawca: Polish Academy of Sciences, Committee on Electrical Engineering
• Czasopismo: Archives of Electrical Engineering
• Rocznik: 2017
• Tom: Vol. 66, nr 3
• Strony: 485--494
• Opis fizyczny: Bibliogr. 17 poz., rys., wz.

Twórcy

autor

Czapp S.

• Faculty of Electrical and Control Engineering, Gdańsk University of Technology Narutowicza 11/12, 80-233 Gdańsk, Poland

autor

Dobrzyński K.

• Faculty of Electrical and Control Engineering, Gdańsk University of Technology Narutowicza 11/12, 80-233 Gdańsk, Poland

autor

Klucznik J.

• Faculty of Electrical and Control Engineering, Gdańsk University of Technology Narutowicza 11/12, 80-233 Gdańsk, Poland

autor

Lubosny Z.

• Faculty of Electrical and Control Engineering, Gdańsk University of Technology Narutowicza 11/12, 80-233 Gdańsk, Poland

autor

Kowalak R.

• Faculty of Electrical and Control Engineering, Gdańsk University of Technology Narutowicza 11/12, 80-233 Gdańsk, Poland

Bibliografia

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).