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STATCOM is______________ regulating device
Current
Power
Voltage
Frequency
Voltage
A STATCOM (Static Synchronous Compensator) is a shunt-connected Flexible ACTransmission System (FACTS) device primarily used for regulating the bus voltage at the point of connection. It operates by controlling the amount of reactive power injected into or absorbed from the power system.
A STATCOM (Static Synchronous Compensator) is a shunt-connected Flexible ACTransmission System (FACTS) device primarily used for regulating the bus voltage at the point of connection. It operates by controlling the amount of reactive power injected into or absorbed from the power system.
Q=XeqтАЛVbusтАЛ(VoutтАЛтИТVbusтАЛ)тАЛ тАФ Reactive power exchange mechanism
P=XeqтАЛVoutтАЛVbusтАЛтАЛsin(╬┤) тАФ Active power exchange (usually negligible for STATCOM)
The STATCOM functions as a voltage source converter (VSC) connected in shunt to the transmission line through a coupling transformer. By varying the magnitude of the output voltage (VoutтАЛ) of the VSC relative to the transmission line voltage (VbusтАЛ), the device exchanges reactive power. If VoutтАЛ>VbusтАЛ, it acts as a capacitive source, injecting reactive power; if VoutтАЛ<VbusтАЛ, it acts as an inductive sink, absorbing reactive power.
It is a shunt-connected device belonging to the VSC-based FACTS controller family.
The output voltage magnitude is controllable via pulse-width modulation (PWM) or phase-angle control.
STATCOM provides faster response times compared to traditional SVC (Static Var Compensator).
It supports the bus voltage even during low-voltage conditions, unlike an SVC.
Fast response time for transient stability improvement.
Smaller physical footprint compared to SVCs.
Superior performance during low system voltage conditions.
Higher initial cost due to complex power electronic converters.
Requires complex control systems and protection schemes.
Limited overload capability compared to rotating synchronous condensers.
Voltage stability improvement in transmission grids.
Flicker mitigation in industrial loads like arc furnaces.
Reactive power compensation for renewable energy integration.
STATCOM uses IGBTs or GTOs as switching elements in the inverter circuit.
Option A is incorrect as current regulation is a means to achieve voltage stability, not the primary goal.
Option B is incorrect as it does not regulate real power, only reactive power.
Option D is incorrect as it has no inherent frequency regulation capability.
C is correct тАФ A STATCOM is primarily utilized to maintain and regulate bus voltage by controlling reactive power flow.
Always remember: STATCOM = Voltage Regulator; UPFC = Universal Controller (Voltage + Power Flow); SVC = Impedance-based Voltage Regulator.