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This paper presents the effects of Static Var Compensator (SVC), one of the shunt connected Flexible Alternating Current Transmission System (FACTS) devices, on the measured impedance at the relaying point in the case of inter phase, phase to phase and three phase, faults. The measured impedance at the relaying point is affected by several factors, including the line pre-fault loading, line structural...
This paper discusses the impact of a directly connected load to transmission lines, without switching and protective facilities, on distance relays at the line ends, by means of presenting the measured impedance at the relaying point and the distance relay ideal tripping characteristic. The measured impedance at the relaying point is affected by several factors, including the line structural and pre-fault...
Advancements in telecommunication technology have opened up new horizons in power system protection such as wide area protection. In this protection data collected at busbars of power system are transmitted to a control centre where a backup protection is provided to prevent blackouts. This paper proposes a technique for speeding up the protection while maintaining its integrity. Based on the fact...
This paper presents a new control scheme for a shunt hybrid power filter. The control system includes two main loops. First control loop is for generating harmonic component of the active filter reference voltage. In this control scheme no harmonic extracting circuit is used and hence, it has not instability problem due to time delay of the signal processing required in the conventional control schemes...
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