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Reliability Analysis Models for Differential Protection Considering Communication Delays and Errors

Author

Listed:
  • Yingjun Wu

    (School of Automation, Nanjing University of Posts and Telecommunications, No. 9, Wenyuan Road, Nanjing 210023, China)

  • Manli Li

    (School of Automation, Nanjing University of Posts and Telecommunications, No. 9, Wenyuan Road, Nanjing 210023, China)

  • Yi Tang

    (School of Electrical Engineering, Southeast University, No. 2 Sipailou, Nanjing 210096, China)

  • Rong Fu

    (School of Automation, Nanjing University of Posts and Telecommunications, No. 9, Wenyuan Road, Nanjing 210023, China)

  • Ming Ni

    (NARI Technology Inc., No. 19, Chengxin Road, Nanjing 211106, China)

Abstract

This paper proposes three probability models to assess the impact of communication delays and bit errors on differential protection. First, the mechanism of relay protection malfunction caused by communication delays and bit errors is introduced. In general, a channel’s consistent delay or bit error results in refuse-operations, while a channel’s inconsistent delay normally causes false trips. Based on the analysis of the probability distributions of communication delays and bit errors, probabilistic models of false trips and refuse-operations are proposed. Simulation results, using typical parameters, are implemented to investigate the effects of communications on the malfunction probability of differential protection.

Suggested Citation

  • Yingjun Wu & Manli Li & Yi Tang & Rong Fu & Ming Ni, 2015. "Reliability Analysis Models for Differential Protection Considering Communication Delays and Errors," Energies, MDPI, vol. 8(4), pages 1-19, March.
    • Handle: RePEc:gam:jeners:v:8:y:2015:i:4:p:2454-2472:d:47413
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    Cited by:

    1. Olga Akhmedova & Anatoliy Soshinov & Farit Gazizov & Svetlana Ilyashenko, 2021. "Development of an Intelligent System for Distance Relay Protection with Adaptive Algorithms for Determining the Operation Setpoints," Energies, MDPI, vol. 14(4), pages 1-20, February.

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