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Important Factors for Consideration during the Specification of SF6 Circuit Breakers for High Voltage Generators

Author

Listed:
  • Avni Alidemaj

    (Faculty of Electrical Engineering, University of Montenegro, 81000 Podgorica, Montenegro)

  • Qendrim Nika

    (GE Renewable Energy, General Electric International INC, 10000 Pristina, Kosovo)

Abstract

This paper describes and analyzes the phenomena that occur in the case of a current interruption due to faults in the high voltage circuit breaker. That happens during connection of a generator to the network without meeting the synchronization conditions. This paper also describes and analyzes the important factors that have to be considered during the specification of SF6 circuit breakers for high voltage generators. A high direct current component in the fault current poses a major problem during such interruptions. To investigate this problem and propose possible solutions, simulations were performed on a power network model completed with the network’s data, using software such as EMTP-ATP, PSS-E and MATLAB. Various modes of operation were simulated, which are important for analyzing the strain on circuit breakers near the generator. Based on the performed simulations, it can be concluded that circuit breakers with rapid reactions in interrupting the fault current in an energy system are not always a favorable solution due to the high value of the direct current component in the fault current, which prevents the current from passing through zero within a short time.

Suggested Citation

  • Avni Alidemaj & Qendrim Nika, 2020. "Important Factors for Consideration during the Specification of SF6 Circuit Breakers for High Voltage Generators," Energies, MDPI, vol. 13(14), pages 1-16, July.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:14:p:3608-:d:383962
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    References listed on IDEAS

    as
    1. Niancheng Zhou & Jiafang Wu & Qianggang Wang, 2018. "Three-Phase Short-Circuit Current Calculation of Power Systems with High Penetration of VSC-Based Renewable Energy," Energies, MDPI, vol. 11(3), pages 1-25, March.
    2. Wenxia Liu & Yicong Liu & Shuya Niu & Zongqi Liu, 2017. "Assessment Method for Substation Capacity Credit of Generalized Power Source Considering Grid Structure," Sustainability, MDPI, vol. 9(6), pages 1-18, June.
    3. Muhammad Haroon Nadeem & Xiaodong Zheng & Nengling Tai & Mehr Gul, 2018. "Identification and Isolation of Faults in Multi-terminal High Voltage DC Networks with Hybrid Circuit Breakers," Energies, MDPI, vol. 11(5), pages 1-21, April.
    4. Jing Li & Tao Zheng & Zengping Wang, 2018. "Short-Circuit Current Calculation and Harmonic Characteristic Analysis for a Doubly-Fed Induction Generator Wind Turbine under Converter Control," Energies, MDPI, vol. 11(9), pages 1-23, September.
    5. Hongshun Liu & Zhen Wang & Jingjing Yang & Bin Li & Ang Ren, 2018. "Circuit Breaker Rate-of-Rise Recovery Voltage in Ultra-High Voltage Lines with Hybrid Reactive Power Compensation," Energies, MDPI, vol. 11(1), pages 1-14, January.
    6. Gyu-Jung Cho & Ji-Kyung Park & Seung-Hyun Sohn & Se-Jin Chung & Gi-Hyeon Gwon & Yun-Sik Oh & Chul-Hwan Kim, 2017. "Development of a Leader-End Reclosing Algorithm Considering Turbine-Generator Shaft Torque," Energies, MDPI, vol. 10(5), pages 1-14, May.
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