Influence of frequency-dependent characteristics of grounding and line models on transient overvoltages in overhead lines

• Autorzy: Alipio R. , De Miranda A.

Identyfikatory

DOI

10.15199/48.2018.02.01

Warianty tytułu

PL

Wpływ charakterystyk częstotliwościowych uziemienia i linii na przepięcia piorunowe w liniach napowietrznych

• Języki publikacji: EN

Abstrakty

EN

This paper assesses the influence of the frequency-dependent characteristics of line and grounding models, along with the effect of the frequency dependence of the electrical parameters of soil, on developed lightning overvoltages in overhead lines. It is shown that in most cases the frequency dependence of soil parameters can be disregarded in the line model. On the other hand, the frequency-dependent characteristics of grounding markedly impacts the developed transient voltages, and in accurate studies a grounding static model should be avoided.

PL

Oszacowano wpływ charakterystyk częstotliwościowych modelu linii i uziomu, włącznie z zależnością od częstotliwości parametrów gruntu, na przepięcia pochodzenia piorunowego w liniach napowietrznych. W większości przypadków w modelu linii zależność parametrów gruntu od częstotliwości może być pominięta. Charakterystyki częstotliwościowe uziomu mają natomiast znaczący wpływ na wyznaczane przepięcia, zatem w przypadku dokładnych analiz należy unikać stosowania statycznego modelu uziomu.

Słowa kluczowe

EN

frequency-dependent line model; frequency-dependent grounding model; overhead line; lightning transient

PL

model linii zależny od częstotliwości; model uziomu zależny od częstotliwości; linia napowietrzna; przepięcia pochodzenia piorunowego

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Przegląd Elektrotechniczny
• Rocznik: 2018
• Tom: R. 94, nr 2
• Strony: 1--4
• Opis fizyczny: Bibliogr. 23 poz., rys.

Twórcy

autor

Alipio R.

• Department of Electrical Engineering, Federal Center of Technological Education of Minas Gerais, Av Amazonas, 7675, postal code: 30510000, Belo Horizonte, Brazil

autor

De Miranda A.

• Department of Electrical Engineering, Federal Center of Technological Education of Minas Gerais, Av Amazonas, 7675, postal code: 30510000, Belo Horizonte, Brazil

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).