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A Digital Relay Protection System in Electrical Distribution Networks

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Abstract

A two-level relay protection system has been developed that provides a significant improvement in the basic properties of relay protection. The proposed system consists of a base level and a centralized “digital add-on” for each power node. The developed two-level structure of the centralized digital RS system ensures the autonomy of the base level and the survivability of the entire relay protection system at the substation as a whole. This “digital substation” management architecture can be implemented on-site in stages. The two-stage principle of organizing construction and installation and commissioning works allows creating new “digital” substations and converting existing substations to the status of “digital” substations with minimal time spent. Comprehensive studies of the prototype of the protection system conducted in the laboratory and in the conditions of pilot operation confirmed the validity of the restrictions and assumptions adopted during the development.

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REFERENCES

  1. Bulychev, A.V., Vasiliev, D.S., Kozlov, V.N., and Silanov, D.N., Relay protection in 110/35/10 kV distribution networks in the context of digital transformation of electric power systems, Releinaya Zashch. Avtom., 2019, no. 1.

  2. Bulychev, A.V., Vasiliev, D.S., and Silanov, D.N., Two-level digital control and relay protection system for the facilities of the 110/35/10 kV distribution grid complex, Vestn. Chuvash. Gos. Univ., Elektrotekh. Elektroenerg., 2019, no. 3.

  3. Bulychev, A.V., et al., RF Patent 194011, Byull. Izobret., 2019, no. 33.

  4. Pravila ustroistva elektroustanovok (The Construction Rules of Electrical Systems), Moscow: Enas, 2003, 7th ed.

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Authors and Affiliations

  1. Ulyanov Chuvash State University, Republic of Chuvashia, 428000, Cheboksary, Russia

    A. V. Bulychev, G. P. Okhotkin & S. A. Vasiliev

  2. OOO NPP Bresler, Cheboksary, Russia

    A. V. Bulychev & D. N. Silanov

  3. Cheboksary Cooperative Institute, Russian University of Cooperation, Cheboksary, Russia

    V. V. Alekseev

Authors
  1. A. V. Bulychev
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  2. G. P. Okhotkin
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  3. D. N. Silanov
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  4. S. A. Vasiliev
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  5. V. V. Alekseev
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Corresponding author

Correspondence to A. V. Bulychev.

Additional information

Translated by A. Muravev

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Bulychev, A.V., Okhotkin, G.P., Silanov, D.N. et al. A Digital Relay Protection System in Electrical Distribution Networks. Russ. Electr. Engin. 91, 495–499 (2020). https://doi.org/10.3103/S1068371220080064

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  • DOI: https://doi.org/10.3103/S1068371220080064

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