Using TACS functions within EMTP to teach protective relaying fundamentals

Journal Article · Sat Feb 01 04:00:00 EST 1997 · IEEE Transactions on Power Systems

DOI:https://doi.org/10.1109/59.574917· OSTI ID:484880

Wall, R W ^[1]; Johnson, B K ^[2]

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1. Univ. of Idaho, Boise, ID (United States). Dept. of Electrical Engineering
2. Univ. of Idaho, Moscow, ID (United States). Dept. of Electrical Engineering

The purpose of this discussion is to provide an educational tool for investigating relaying concepts by modeling digital relays using TACS functions within EMTP in a closed-loop manner. Various elements of digital protection systems are identified and organized to generate an systematic approach to modeling the actual hardware of relay systems. Discussion is limited to conventional relaying systems that monitor the vitality of the 60 Hz voltages and/or currents. TACS functions for transport delay and pulse generators are used to model dynamics associated with analog to digital conversion and sampling systems. DSP algorithms convert a sequence of sampled data into a sequence of values for magnitude and phase components. A simple example of a time overcurrent relay is developed to demonstrate the techniques to implement relay control in EMTP with TACS and illustrates the kinds of phenomena that can be studied using these techniques.

• OSTI ID: 484880
• Report Number(s): CONF-960111--
• Journal Information: IEEE Transactions on Power Systems, Journal Name: IEEE Transactions on Power Systems Journal Issue: 1 Vol. 12; ISSN 0885-8950; ISSN ITPSEG
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
COMPUTER-AIDED INSTRUCTION
COMPUTERIZED SIMULATION
E CODES
EDUCATION
EDUCATIONAL TOOLS
RELAYS