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In a substation, the following equipment is not installed
Exciters
Series capacitors
Shunt reactors
Voltage transformers
Exciters
An exciter is a dedicated machine used for the excitation system of a synchronous generator located within a power plant. Since substations are purely designed for power transformation, switching, and compensation, they do not house generator-side equipment like exciters.
An exciter is a dedicated machine used for the excitation system of a synchronous generator located within a power plant. Since substations are purely designed for power transformation, switching, and compensation, they do not house generator-side equipment like exciters.
VexcтАЛ=IfтАЛRfтАЛ тАФ The relationship between exciter output voltage and rotor field parameters
Q=V2╧ЙC тАФ Reactive power compensation in series capacitors
In a generator, the exciter provides the necessary DC field current to the rotor windings to establish the magnetic field. Substations are nodes in the power grid connected to transmission lines; their primary equipment includes power transformers, circuit breakers, protective relays, and compensators (capacitors/reactors).
Exciters are essential components of the generator excitation system located in the generation plant.
Substations are responsible for voltage step-up/step-down and reactive power control.
Shunt reactors are used in substations to compensate for Ferranti effect on long transmission lines.
Series capacitors are used to increase the power transfer capability by reducing transmission line reactance.
Substations enable efficient long-distance power transmission.
Reactive power control improves system voltage stability.
Complex maintenance of insulating media (SF6/Oil).
High initial setup cost.
Step-up/Step-down voltage transformation.
Power distribution to load centers.
Grid protection and fault isolation.
Voltage Transformers (PTs) are installed in substations for metering and protective relaying.
Shunt reactors are typically installed at the ends of high-voltage transmission lines.
A is correct тАФ Exciters are internal components of synchronous generators found in power plants, not in electrical substations.
Remember that substations transform or manage energy; power plants generate it. Equipment that creates electrical energy or magnetic excitation for generators belongs in the plant.