Calculation of electric shock current caused by touch and step voltage in grounding grids including climatic conditions

• Autorzy: Sikora Roman , Markiewicz Przemysław , Korzeniewska Ewa , Nikitina Alyona

Identyfikatory

DOI

10.15199/48.2024.04.42

Warianty tytułu

PL

Obliczanie prądu porażenia prądem wywołanym napięciem dotykowym i krokowym w sieciach uziemiających z uwzględnieniem warunków klimatycznych

• Języki publikacji: EN

Abstrakty

EN

Appropriately designed grounding should provide such a distribution of electrical potential on the ground surface to ensure the values of electric shock currents are at an acceptable level. The potential distribution depends on the design and size of the grounding system and the resistivity of the soil. The value of the electric shock current depends on the distribution of electrical potential on the ground surface determining the values of step and touch voltages and the impedance of the human body. The impedance value of the human body is affected by factors such as the condition of the epidermis, and the path of shock, but also environmental factors such as humidity and temperature. The article presents the results of calculations of human body impedance and electric shock current for different environmental conditions and different design variants of the grounding system, determining the values of step and touch voltages.

PL

Odpowiednio zaprojektowane uziemienie powinno zapewniać taki rozkład potencjału elektrycznego na powierzchni gruntu, aby zapewnić wartości prądów rażeniowych na akceptowalnym poziomie. Rozkład potencjału zależy od konstrukcji i rozmiaru systemu uziemienia oraz rezystywności gruntu. Wartość prądu rażeniowego zależy od rozkładu potencjału elektrycznego na powierzchni ziemi, określającego wartości napięć krokowych i dotykowych oraz impedancji ludzkiego ciała. Na wartość impedancji ciała człowieka mają wpływ takie czynniki jak stan naskórka, droga rażenia, ale także czynniki środowiskowe takie jak wilgotność i temperatura. W artykule przedstawiono wyniki obliczeń impedancji ciała człowieka i prądu rażenia dla różnych warunków środowiskowych i dla różnych wariantów projektowych systemu uziemienia, determinującego wartości napięć krokowych i dotykowych.

Słowa kluczowe

EN

electric shock current; step voltage; touch voltage; human body impedance; grounding grid

PL

prąd rażeniowy; napięcie krokowe; napięcie dotykowe; impedancja ciała człowieka

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Przegląd Elektrotechniczny
• Rocznik: 2024
• Tom: R. 100, nr 4
• Strony: 217--220
• Opis fizyczny: Bibliogr. 30 poz., rys.

Twórcy

autor

Sikora Roman

• Lodz University of Technology, Institute of Electrical Power Engineering, 20 Stefanowski Str., 90 537 Lodz

• https://orcid.org/0000-0001-6882-7811

autor

Markiewicz Przemysław

• Lodz University of Technology, Institute of Electrical Power Engineering, 20 Stefanowski Str., 90-537 Lodz

• https://orcid.org/0000-0002-7602-0361

autor

Korzeniewska Ewa

• Lodz University of Technology, Institute of Electrical Engineering Systems, 18 Stefanowski Str., 90-537 Lodz

• https://orcid.org/0000-0002-0766-1376

autor

Nikitina Alyona

• Department of Systems of Automatic Control and Electric Drive of Kremenchuk Mykhailo Ostrohradskyi National University, vul. Pershotravneva, 20, 39600, Ukraine

• https://orcid.org/0000-0003-0495-0604

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki i promocja sportu (2025).