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This paper describes the evolution of procedures to protection relays performance testing. In the early days, the measurement and calibration of relays were made by analog devices and instruments that basically provided the steady-state tests. In the 70's came the electronic test equipment. With the passage of time have evolved, providing a full range of dynamic tests. With technological advances,...
To have an accurate simulation of capacitor voltage transformer (CVT) the proper modeling is required. This paper presents and implements a comprehensive model of CVT in the PGTRP software. The transient behavior of CVT is then investigated under different faults. Finally, the effects of CVT transients on distance relays performance is studied using extensive simulation.
This paper describes the process of extracting the fault information from common format for transient data exchange (COMTRADE) record. The COMTRADE format record was obtained from the distance relay recording device, provided by the Protection Department of Tenaga Nasional Berhad (TNB). A graphical user interface (GUI) simulation program using MATLAB was developed which implements the one-cycle cosine...
Computer modeling of relays helps engineers understand how protection systems behave during faults and other disturbances. Simulators can assess the reliability of a protection system, determine the effect of correct and incorrect operation on a power network and if necessary help a relay manufacturer investigate new design ideas. The PSCAD/EMTDC transient simulator was used to model the effect of...
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