In a substation there are many items.
Circuit Breakers
Disconnectors
Earth Switches
Current Transformers
Voltage Transformers
Surge Arrestors
Power Transformers
Insulators
In a simple substation, there are one or more distribution transformers, circuit breakers, an isolator, a capacitor bank, from what I've seen.
safety and command
pagalpanti
Batteries are essential components in a substation. They provide the (tripping) current by which protective relays can trip high-voltage circuit breakers in the event of a fault. This means that the circuit breakers can trip even if the substation itself has lost its ancillary AC power supply.
A high-voltage circuit breaker's trip coil is normally operated from a d.c. supply -provided by a bank of batteries located in the substation. This ensures that, in the event of a total loss of a.c. power to the substation, the protection system remains effective.
AnswerIt is a large encased group of metal plates about the size of a small house with 2 sets of insulated copper wires wrapped around the plates -an input and output - to convert a very high supply line voltage - maybe 44 thousand volts to a lower voltage of 2200 volts that runs down the power line poles in your neighborhood. Look at your street's power poles and you will see a mini substation that converts he 2200 volt to 220 volts and may supply several homes. Actually a substation transformer for a distribution substation will reduce the incoming voltage from 115,000 volts or 69,000 volts to a lower voltage closer to 7200 volts that runs down the power poles in your neighborhood. At your house there will be a small transformer that reduces the voltage from 7200 volts to 240 volts to meet the needs in your home.Actually both are wrong !!
The test equipment used to test high voltage cables is a hi-pot test where a high DC voltage is a applied to the cable. This voltage can be from 150% to 200% of the working voltage of the cable.See related links below.
it is a high resistive paralell rezonans circuit which allows to cary signals between to electric station with limited bandwithAnswerLine traps are a large inductors, suspended at the end of a high-voltage transmission line which prevents high-frequency communications/protection signals from travelling beyond that point, by attenuating those signals. The inductive reactance of the inductor presents a high reactance to high-frequency signals but a low reactance to mains frequency (50/60 Hz).
Extra High Voltage substation. It generally 132 kv or higher
potheads
The substation is there to convert a high voltage to a lower voltage for electricity supply. Transformers are needed to do this.
In my line of work that is an Electrical High Voltage substation that is brand new. It is being built from a green field into an energized fully functional substation yard. There is no existing substation or remodeling of an existing one being done.
A power substation is used to reduce the voltage from high voltage power lines to a voltage that is less dangerous that you can use in a house for example. It is less costly to transmit electrical energy over long distances using high voltage.
1. High voltage equipment = Toaster2. Low voltage equipment = Mobile phoneBefore testing, remove the source of power. Power cord from the socket for a toaster and battery from a phone.
Batteries are essential components in a substation. They provide the (tripping) current by which protective relays can trip high-voltage circuit breakers in the event of a fault. This means that the circuit breakers can trip even if the substation itself has lost its ancillary AC power supply.
An electricity substation is needed to change the high voltage needed for transmission of power over a distance down to low voltage needed to supply houses etc.
a very helpful functionAnswerBatteries are essential components in a substation. They provide the (tripping) current by which protective relays can trip high-voltage circuit breakers in the event of a fault. This means that the circuit breakers can trip even if the substation itself has lost its ancillary AC power supply.
A high voltage transformer is a very dangerous piece of equipment. The voltage level is enough to electrocute a person if handled improperly. Only trained professionals should work with this type of equipment.
a very helpful functionAnswerBatteries are essential components in a substation. They provide the (tripping) current by which protective relays can trip high-voltage circuit breakers in the event of a fault. This means that the circuit breakers can trip even if the substation itself has lost its ancillary AC power supply.
A high-voltage circuit breaker's trip coil is normally operated from a d.c. supply -provided by a bank of batteries located in the substation. This ensures that, in the event of a total loss of a.c. power to the substation, the protection system remains effective.