Attaining Higher Reliability in Power Systems by Using Facts
Overload in transmission systems and higher demand of electric energy have necessitated higher production of electric energy. However, it is very difficult to obtain new limits for transmission lines. Therefore, power generation and transmission companies try to make use of maximum capacity of their transmission lines. As a novel technology, FACTS have enabled companies to generate higher energy along with attaining high level system reliability. FACTS is composed of several components, e.g. TCSC, UPFC, and SVC. TCSC is a capacitor reactance compensator including a capacitor bank in series which is paralleled with a thyristor-controlled reator to provide a series capacitor reactance with uniform variations. UPFC is able to control transmission line voltage, impedance, and angle simultaneously or optionally and it can control real and reactive power flow in line. Also, it can compensate reactive power in parallel with independent control capability. SVC is a static generator of reactive power in which output are changed in a way that specific parameters in electric power systems are preserved or controlled. The present paper considered these three components of FACTS technology which are able to increase control and efficiency of transmission lines to achieve higher level of power systems reliability.
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Mediterranean Journal of Social Sciences ISSN 2039-9340(Print) ISSN 2039-2117(Online)
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