Experimental evaluation of EMTP-based current transformer models for protective relay transient study. [Electro Magnetic Transient Program]

Journal Article · Sat Jan 01 04:00:00 EST 1994 · IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/61.277712· OSTI ID:7236999

Kezunovic, M; Kojovic, Lj; Abur, A ^[1]; Fromen, C W; Sevcik, D R ^[2]; Phillips, F ^[3]

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1. Texas A and M Univ., College Station, TX (United States)
2. Houston Lightning Power, TX (United States)
3. Electric Power Research Inst., Palo Alto, CA (United States)

This paper describes an EPRI study of Current Transformer (CT) digital models intended for protective relay transient performance analysis. Experimental evaluation of CT models implemented using Electro Magnetic Transient Program (EMTP) was carried out. Two relaying CTs with 600/5 and 2000/5 ratios were used in the study. Experiments in a high power laboratory were performed to obtain transient responses. Simulation of the CT response to the same transient events was set up using three different CT models. They were implemented based on the saturable transformer and nonlinear reactor models available in an EMTP. Comparison of laboratory and simulation results indicates that CT models developed based on the EMTP program give satisfactory results for most of the cases. It has also been discovered that in some instances EMTP models need further improvements.

• OSTI ID: 7236999
• Journal Information: IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (United States) Vol. 9:1; ISSN 0885-8977; ISSN ITPDE5
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
240100* -- Power Systems-- (1990-)
AC SYSTEMS
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ENERGY SYSTEMS
EQUIPMENT
EQUIPMENT PROTECTION DEVICES
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TRANSFORMERS