Bakar (Jan 2024)

Protection of HV and MV lines in electric power distribution Kruševac with special emphasis on microprocessor relay protection

  • Marković Nenad,
  • Jakšić Uroš,
  • Rilak Vladimir,
  • Marković Strahinja

DOI
https://doi.org/10.5937/bakar2401041M
Journal volume & issue
Vol. 49, no. 1
pp. 41 – 58

Abstract

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The aim of the paper is to present the method of implementing and using relay protection with a special emphasis on microprocessor relay protection in Electric power distribution Kruševac, and based on the presented concrete examples of settings and operation of protective devices that were collected from practice and paper in the field. The software packages Test Universe were used in the paper for testing protection in TS "Kruševac 1" on the 1158B transmission line in the direction of "Kruševac 4" on the 110 kV network, as wel as Test Universe software package for testing protection in TS "Kruševac 1" on the 1158B transmission line in the direction of "Kruševac 4" on the 110 kV network. During the test, movement of the current and voltage values, disconnection times, as well as characteristics that show operation of each protection were monitored on the computer. The paper in the practical part shows the detailed connection of the equipment for testing the functions of the microprocessor protection relay of the 110 kV transmission line. For a specific transmission line, parameters, images of devices and complete test equipment, as well as official test lists with actual tripping values are provided. Advantage of modern microprocessor relays reflects in the fact that all functions are combined in one compact box that communicate with each other using special protocols and thus facilitate the work of users.

Keywords