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Which of the following is the 1st generation FACTs devices?
SVC
STATCOM
SSSC
UPFC
SVC
Static Var Compensator (SVC) is classified as the first-generation FACTS device, utilizing conventional thyristor technology. It provides fast-acting reactive power compensation by controlling the conduction angle of thyristors to regulate line voltage.
Static Var Compensator (SVC) is classified as the first-generation FACTS device, utilizing conventional thyristor technology. It provides fast-acting reactive power compensation by controlling the conduction angle of thyristors to regulate line voltage.
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The SVC regulates voltage by either absorbing or injecting reactive power at the point of connection. It consists of a Thyristor-Controlled Reactor (TCR) and Thyristor-Switched Capacitors (TSC). By adjusting the firing angle of the TCR, the fundamental current through the reactor is varied, allowing for smooth control of the equivalent susceptance.
SVC relies on line-commutated thyristors (SCRs).
It is a shunt-connected FACTS device.
The 2nd generation of FACTS includes voltage-sourced converter (VSC) based devices like STATCOM.
It does not have energy storage capability.
Proven and mature technology
Cost-effective for steady-state voltage stability
Very high response speed
Generates low-order harmonics
Limited effectiveness during very low system voltage conditions
Large physical footprint
Voltage regulation in transmission lines
Reactive power compensation for industrial loads
Flicker mitigation in arc furnaces
1st Gen: SVC, TCSC (Thyristor-based).
2nd Gen: STATCOM, SSSC (VSC-based).
3rd Gen: UPFC (Unified Power Flow Controller).
Option B (STATCOM) is a 2nd generation device using GTOs or IGBTs.
A is correct тАФ SVC is recognized as the first-generation FACTS device because it uses thyristor technology for reactive power control.
Always remember the generation order: Thyristor-switched/controlled (1st) < VSC-based (2nd) < Multi-converter/Unified controllers (3rd).