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Improved Testing Method Using the Multi-Transformers Synthetic Circuit to Verify Capacitive Charging Current Switching Capability of High-Voltage Circuit Breakers

Author

Listed:
  • Yun-Seong Kim

    (Korea Electrotechnology Research Institute, Changwon 51543, Republic of Korea)

  • Jong-Hyuk Choi

    (Korea Electrotechnology Research Institute, Changwon 51543, Republic of Korea)

  • Rahul S. Patil

    (Department of Electrical Engineering, K. K. Wagh Institute of Engineering Education and Research, Nashik 422003, India)

  • Min-Won Park

    (Department of Electrical Engineering, Changwon National University, Changwon 51140, Republic of Korea)

Abstract

To perform a capacitive current switching test (CCT) at AC extra-high-voltage (EHV) and above level, this paper proposes a new multi-transformer synthetic circuit (MTSC) test method that replaces the general synthetic test method using capacitor banks. An MTSC method has a simpler circuit structure compared to other synthetic testing methods and has higher equivalence (especially recovery voltage and TRV ) and validity. Using this method, CCTs for circuit breakers (CBs) of the AC 420 kV voltage class were performed as a field test using the IEC 62271-100 standard. To verify that the test method was valid, test results were analyzed and compared with the requirements of a standard. Consequently, the MTSC method completely covered the requirements of the standard.

Suggested Citation

  • Yun-Seong Kim & Jong-Hyuk Choi & Rahul S. Patil & Min-Won Park, 2023. "Improved Testing Method Using the Multi-Transformers Synthetic Circuit to Verify Capacitive Charging Current Switching Capability of High-Voltage Circuit Breakers," Energies, MDPI, vol. 16(12), pages 1-17, June.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:12:p:4764-:d:1172924
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