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Calculation of Switching Overvoltage for the Case of a Bolted Three-Phase Short Circuit on a Medium-Voltage Feeder with Connected Induction and/or Synchronous Generators
1
Faculty of Technical Sciences Čačak, University of Kragujevac, Čačak 32000, Serbia
* Corresponding Author:
Vladica Mijailović,
[email protected]
Volume 1, Issue 2
2025
Received: 08 December 2025
Accepted: 19 December 2025
Published: 29 December 2025
Article Information
Abstract
This paper presents a procedure for calculating switching overvoltage on the main circuit breaker of a medium-voltage (MV) cable feeder, to which induction and/or synchronous generators are connected, during a three-phase short circuit. When a fault occurs, the feeder is disconnected by the circuit breaker located at its beginning. After the set operating time of the relay protection, since islanded operation is not permitted, the connected distributed generators will also be disconnected. It is shown that, during the period when the network is disconnected while the generators remain connected, the overvoltage factor reaches values between 2.2 and 2.5, depending on the types of generators and the location of points of common coupling. The individual transient responses of the distribution network and the mentioned types of distributed generators differ significantly. Using the superposition theorem, the calculation of switching overvoltage is demonstrated with elementary computer assistance.
Graphical Abstract
Keywords
distribution network
induction generator
superposition
switching overvoltage
synchronous generator
Data Availability Statement
Data will be made available on request.
Funding
This work was supported by the Ministry of Science, Technological Development and Innovation of the Republic of Serbia, and these results are parts of the Grant No. 451-03-136/2025-03/200132, with University of Kragujevac - Faculty of Technical Sciences Čačak.
Conflicts of Interest
The authors declare no conflicts of interest.
Ethical Approval and Consent to Participate
Not applicable.
References
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APA Style
Mijailovic, V., & Ranković, A. (2025). Calculation of Switching Overvoltage for the Case of a Bolted Three-Phase Short Circuit on a Medium-Voltage Feeder with Connected Induction and/or Synchronous Generators. ICCK Transactions on Electric Power Networks and Systems, 1(2), 82–92. https://doi.org/10.62762/TEPNS.2025.181085
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TY - JOUR AU - Mijailović, Vladica AU - Ranković, Aleksandar PY - 2025 DA - 2025/12/29 TI - Calculation of Switching Overvoltage for the Case of a Bolted Three-Phase Short Circuit on a Medium-Voltage Feeder with Connected Induction and/or Synchronous Generators JO - ICCK Transactions on Electric Power Networks and Systems T2 - ICCK Transactions on Electric Power Networks and Systems JF - ICCK Transactions on Electric Power Networks and Systems VL - 1 IS - 2 SP - 82 EP - 92 DO - 10.62762/TEPNS.2025.181085 UR - https://www.icck.org/article/abs/TEPNS.2025.181085 KW - distribution network KW - induction generator KW - superposition KW - switching overvoltage KW - synchronous generator AB - This paper presents a procedure for calculating switching overvoltage on the main circuit breaker of a medium-voltage (MV) cable feeder, to which induction and/or synchronous generators are connected, during a three-phase short circuit. When a fault occurs, the feeder is disconnected by the circuit breaker located at its beginning. After the set operating time of the relay protection, since islanded operation is not permitted, the connected distributed generators will also be disconnected. It is shown that, during the period when the network is disconnected while the generators remain connected, the overvoltage factor reaches values between 2.2 and 2.5, depending on the types of generators and the location of points of common coupling. The individual transient responses of the distribution network and the mentioned types of distributed generators differ significantly. Using the superposition theorem, the calculation of switching overvoltage is demonstrated with elementary computer assistance. SN - 3070-2607 PB - Institute of Central Computation and Knowledge LA - English ER -
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@article{Mijailovi2025Calculatio,
author = {Vladica Mijailović and Aleksandar Ranković},
title = {Calculation of Switching Overvoltage for the Case of a Bolted Three-Phase Short Circuit on a Medium-Voltage Feeder with Connected Induction and/or Synchronous Generators},
journal = {ICCK Transactions on Electric Power Networks and Systems},
year = {2025},
volume = {1},
number = {2},
pages = {82-92},
doi = {10.62762/TEPNS.2025.181085},
url = {https://www.icck.org/article/abs/TEPNS.2025.181085},
abstract = {This paper presents a procedure for calculating switching overvoltage on the main circuit breaker of a medium-voltage (MV) cable feeder, to which induction and/or synchronous generators are connected, during a three-phase short circuit. When a fault occurs, the feeder is disconnected by the circuit breaker located at its beginning. After the set operating time of the relay protection, since islanded operation is not permitted, the connected distributed generators will also be disconnected. It is shown that, during the period when the network is disconnected while the generators remain connected, the overvoltage factor reaches values between 2.2 and 2.5, depending on the types of generators and the location of points of common coupling. The individual transient responses of the distribution network and the mentioned types of distributed generators differ significantly. Using the superposition theorem, the calculation of switching overvoltage is demonstrated with elementary computer assistance.},
keywords = {distribution network, induction generator, superposition, switching overvoltage, synchronous generator},
issn = {3070-2607},
publisher = {Institute of Central Computation and Knowledge}
}
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