Lightning overvoltages in electrical power system of a power plant

Deepak Subedi, Matti Lehtonen

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussaConference contributionScientificvertaisarvioitu

Abstrakti

This paper analyzes lightning overvoltage spikes in an internal network of a large power plant. The cases considered are direct stroke to the phase conductor of the connected power transmission line and back flashover resulting from the lightning stroke to the transmission tower or shield wire. To investigate the transmitted overvoltages through transformers, high frequency models of the transformers are used. The voltage rise at the secondary side of each connected transformer at different voltage levels in the house load network of the power generation plant is analyzed. Protective measures are compared in order the study how to mitigate the transferred overvoltage at the different house load power system levels and to ensure that the impulse voltage is within the basic insulation level (BIL) of the connected equipment. Simulations using different combinations of protective surge arrestors and protective capacitors are done and recommendations on overvoltage protection are presented.

AlkuperäiskieliEnglanti
OtsikkoProceedings of the 2019 20th International Scientific Conference on Electric Power Engineering, EPE 2019
ToimittajatStanislav Rusek, Radomir Gono
KustantajaIEEE
Sivumäärä4
ISBN (elektroninen)9781728113333
DOI - pysyväislinkit
TilaJulkaistu - 1 toukokuuta 2019
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisuussa
TapahtumaInternational Scientific Conference Electric Power Engineering - Kouty nad Desnou, Tshekki
Kesto: 17 toukokuuta 201719 toukokuuta 2017
Konferenssinumero: 18

Julkaisusarja

NimiInternational scientific conference electric power engineering

Conference

ConferenceInternational Scientific Conference Electric Power Engineering
LyhennettäEPE
MaaTshekki
KaupunkiKouty nad Desnou
Ajanjakso17/05/201719/05/2017

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