IEC 61850-Based Centralized Busbar Differential Protection with Data Desynchronization Compensation

Myeong-Hoon Song, Sang-Hee Kang, Nam-Ho Lee and Soon-Ryul Nam
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Myeong-Hoon Song: Department of Electrical Engineering, Myongji University, Yongin 17058, Korea
Sang-Hee Kang: Department of Electrical Engineering, Myongji University, Yongin 17058, Korea
Nam-Ho Lee: Korea Electric Power Research Institute, Daejeon 34056, Korea
Soon-Ryul Nam: Department of Electrical Engineering, Myongji University, Yongin 17058, Korea

Energies, 2020, vol. 13, issue 4, 1-15

Abstract: This paper proposes an IEC 61850-based centralized busbar differential protection scheme, in which data desynchronization between intelligent electronic devices (IEDs) leads to differential current errors. As the differential current errors could result in erroneous operation of the centralized busbar differential protection, data desynchronization should be compensated for. The main causes of data desynchronization are subdivided into measurement timing and time synchronization errors. In this paper, the first-order Lagrange interpolation polynomial is used to compensate for measurement timing errors and the voltage angle differences between IEDs are used to compensate for time synchronization errors. The centralized busbar differential protection is tested using a real-time digital simulator and IEC 61850-based IEDs, which are implemented with the MMS-EASE Lite library and Smart Grid Infrastructure Evaluation Module. The test results show that the data desynchronization compensation can significantly reduce differential current errors, and thus prevent erroneous operation of the IEC 61850-based centralized busbar differential protection.

Keywords: centralized busbar differential protection; IEC 61850; data desynchronization compensation; measurement timing error; time synchronization error (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: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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