Implementation of a numerical overcurrent relay for relay education

Wei Neng Chang*, Ya Jiun Li

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

Abstract

This paper proposes the design and implementation of a numerical over-current relay based on the single-chip microprocessor MSP430F449 for relay education. The over-current protection curves are established according to the international standard IEC 255-4. Using C language develops the relay control program. A graphical monitoring interface in the PC for the relay is designed by using the Borland C++ Builder program, in which the RS-232 data link is employed. Finally, a scaled-down 3-phase power system is built for test. Two experiments are offered to students. Through the experiments, students can understand the architecture and operation principles of modern numerical relays.

Original languageEnglish
Article number465-064
Pages (from-to)289-293
Number of pages5
JournalSeries on Energy and Power Systems
StatePublished - 2005
EventIASTED International Conference on Energy and Power Systems, EPS 2005 - Krabi, Thailand
Duration: 18 04 200520 04 2005

Keywords

  • Experiments
  • Numerical over-current relay
  • Relay education
  • Single-chip microprocessor

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