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

Yun-Seong Kim (), Jong-Hyuk Choi, Rahul S. Patil and Min-Won Park
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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

Energies, 2023, vol. 16, issue 12, 1-17

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.

Keywords: capacitive current switching test; multi-transformer; synthetic test; high-voltage circuit breaker (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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