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Group of electrical equipment used to change characteristic of electric power is known as
Generating station
Substation
Transmission system
All of above
Substation
A substation is a critical node in an electrical power system where equipment such as transformers, circuit breakers, and busbars are grouped together. Its primary function is to transform voltage levels (step-up or step-down), control power flow, and switch circuits for maintenance or protection.
A substation is a critical node in an electrical power system where equipment such as transformers, circuit breakers, and busbars are grouped together. Its primary function is to transform voltage levels (step-up or step-down), control power flow, and switch circuits for maintenance or protection.
VpтАЛIpтАЛ=VsтАЛIsтАЛ тАФ Ideal transformer power balance (assuming no losses)
VsтАЛVpтАЛтАЛ=NsтАЛNpтАЛтАЛ тАФ Voltage ratio based on primary and secondary turns
The mechanism relies on electromagnetic induction for voltage transformation via power transformers. It manages power distribution by interconnecting transmission and distribution lines, often converting high-voltage transmission energy to lower-voltage levels suitable for end-user distribution through tap changers and protection relay coordination.
Substations serve as connection points for transmission and distribution networks.
Essential equipment includes power transformers, circuit breakers, isolators, busbars, and lightning arresters.
They are categorized as transmission substations, distribution substations, or switching stations based on their operational role.
Voltage transformation is achieved via magnetic coupling in transformers while maintaining constant frequency.
Efficient long-distance power transmission at high voltages
Enhanced system reliability through protection and isolation capabilities
High initial capital investment for land and switchgear
Complex maintenance requirements for high-voltage insulation systems
Stepping up voltage at generating stations for transmission
Stepping down voltage at load centers for consumer utility
Substations are typically categorized by voltage level (e.g., 400kV/220kV transmission substation).
Option A (Generating station) produces power, Option C (Transmission system) conveys power, while Substation modifies characteristics.
B is correct тАФ A substation contains the specialized equipment necessary to alter voltage and current characteristics for efficient power delivery.
Always remember that transformers modify voltage, but frequency remains constant throughout the power system network.