Lightning overvoltages in electrical power system of a power plant

Deepak Subedi; Matti Lehtonen

doi:10.1109/EPE.2019.8777933

Lightning overvoltages in electrical power system of a power plant

Deepak Subedi
, Matti Lehtonen

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Abstract

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.

Original language	English
Title of host publication	Proceedings of the 2019 20th International Scientific Conference on Electric Power Engineering, EPE 2019
Editors	Stanislav Rusek, Radomir Gono
Publisher	IEEE
Number of pages	4
ISBN (Electronic)	9781728113333
DOIs	https://doi.org/10.1109/EPE.2019.8777933
Publication status	Published - 1 May 2019
MoE publication type	A4 Conference publication
Event	International Scientific Conference Electric Power Engineering - Kouty nad Desnou, Czech Republic Duration: 17 May 2017 → 19 May 2017 Conference number: 18

Publication series

Name	International scientific conference electric power engineering

Conference

Conference	International Scientific Conference Electric Power Engineering
Abbreviated title	EPE
Country/Territory	Czech Republic
City	Kouty nad Desnou
Period	17/05/2017 → 19/05/2017

Keywords

EMTP
overvoltage
surge arrestor
transformer

Access to Document

10.1109/EPE.2019.8777933

Cite this

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title = "Lightning overvoltages in electrical power system of a power plant",

abstract = "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.",

keywords = "EMTP, overvoltage, surge arrestor, transformer",

author = "Deepak Subedi and Matti Lehtonen",

year = "2019",

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doi = "10.1109/EPE.2019.8777933",

language = "English",

series = "International scientific conference electric power engineering",

publisher = "IEEE",

editor = "Stanislav Rusek and Radomir Gono",

booktitle = "Proceedings of the 2019 20th International Scientific Conference on Electric Power Engineering, EPE 2019",

address = "United States",

note = "International Scientific Conference Electric Power Engineering, EPE ; Conference date: 17-05-2017 Through 19-05-2017",

}

Subedi, D & Lehtonen, M 2019, Lightning overvoltages in electrical power system of a power plant. in S Rusek & R Gono (eds), Proceedings of the 2019 20th International Scientific Conference on Electric Power Engineering, EPE 2019., 8777933, International scientific conference electric power engineering, IEEE, International Scientific Conference Electric Power Engineering, Kouty nad Desnou, Czech Republic, 17/05/2017. https://doi.org/10.1109/EPE.2019.8777933

Lightning overvoltages in electrical power system of a power plant. / Subedi, Deepak; Lehtonen, Matti.
Proceedings of the 2019 20th International Scientific Conference on Electric Power Engineering, EPE 2019. ed. / Stanislav Rusek; Radomir Gono. IEEE, 2019. 8777933 (International scientific conference electric power engineering).

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

TY - GEN

T1 - Lightning overvoltages in electrical power system of a power plant

AU - Subedi, Deepak

AU - Lehtonen, Matti

N1 - Conference code: 18

PY - 2019/5/1

Y1 - 2019/5/1

N2 - 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.

AB - 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.

KW - EMTP

KW - overvoltage

KW - surge arrestor

KW - transformer

UR - https://www.scopus.com/pages/publications/85070464003

U2 - 10.1109/EPE.2019.8777933

DO - 10.1109/EPE.2019.8777933

M3 - Conference article in proceedings

T3 - International scientific conference electric power engineering

BT - Proceedings of the 2019 20th International Scientific Conference on Electric Power Engineering, EPE 2019

A2 - Rusek, Stanislav

A2 - Gono, Radomir

PB - IEEE

T2 - International Scientific Conference Electric Power Engineering

Y2 - 17 May 2017 through 19 May 2017

ER -

Lightning overvoltages in electrical power system of a power plant

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Keywords

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