Quick-response protection system against electric shock in distributed generation systems

• Autorzy: Shkrabets Fedir , Plaksin Sergej , Ostapchuk Oleksandr , Kuznetsov Valeriy , Tymchenko Irina , Muntian Antonina

Identyfikatory

DOI

10.29354/diag/141231

• Języki publikacji: EN

Abstrakty

EN

The peculiarities of the operation of distributed generation systems lead to a change in the requirements for the reliability and safety of the power distribution systems in which they are integrated. To meet the increased requirements, continuous monitoring of the insulation parameters (active resistance and capacitance to ground) is often used with operating artificial non-industrial frequency operational signals introduced into the network. In the case of a sudden touch, such a system is not effective, since the response time of the protection device, which consists of the signal processing time and the operating of the actuator, is crucially important. For the used operational signals with a frequency of 100 and 200 Hz, the processing time using the Fourier transform is 10 ms for 100 Hz and 5 ms for 200 Hz. Considering that the response time of the fastest actuators (based on vacuum switches) is from 3 to 7 ms, this is a rather significant period of time. To develop an effective resolver system, the capabilities of the Matlab environment were used to determine the most successful design of an analog prototype (Butterworth, Bessel, Chebyshev and Cauer of 6th order) for an operational signal with a frequency of 200 Hz. As a result, the processing time was established, which varies widely from 3.5 to 19 ms. Taking into account the known indicators, namely the frequency and number of operational signals, a signal processing system was developed using the vector-matrix analysis method. As a result of modeling the processing characteristics of functional signals (at a sampling rate of 1 kHz), the system quick-response was 3 ms, with the possibility of its further decrease as its productiveness increases.

Słowa kluczowe

EN

electric networks; protection; reliability; ground fault current; electrical safety; protection against electric shock; signal processing system; analog filtering

PL

sieci elektryczne; ochrona; niezawodność; bezpieczeństwo elektryczne; ochrona przeciwporażeniowa; system przetwarzania sygnału; filtracja analogowa

• Wydawca: Polskie Towarzystwo Diagnostyki Technicznej
• Czasopismo: Diagnostyka
• Rocznik: 2021
• Tom: Vol. 22, No. 3
• Strony: 59--65
• Opis fizyczny: Bibliogr. 21 poz., rys.

Twórcy

autor

Shkrabets Fedir

• Department of Power Engineering, Ukrainian State University of Chemical Technology, Gagarina 8, Dnipro, Ukraine

autor

Plaksin Sergej

• Department of Control Systems, Institute of Transport Systems and Technologies of NAS of Ukraine, Pisarzhevsky str., 5, Dnipro, Ukraine

autor

Ostapchuk Oleksandr

• Department of Renewable Energy, Igor Sikorsky Kyiv Polytechnic Institute, Peremohy ave., 37, Kyiv, Ukraine, 03056

autor

Kuznetsov Valeriy

• Electric Power Department, Railway Research Institute_4, Chlopickiego str., 50, Warsaw, Poland

autor

Tymchenko Irina

• Department of Control Systems, Institute of Transport Systems and Technologies of NAS of Ukraine, Pisarzhevsky str., 5, Dnipro, Ukraine

autor

Muntian Antonina

• Foreign Language Department, Dnipro National University of Railway Transport, Lazariana 2, Dnipro, Ukraine

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).