What is meant by 11kV substation?
Table of Contents
What is meant by 11kV substation?
11 KV Substation. Pole-Mounted Sub-Station: 1. It is a distribution sub-station placed overhead on a pole. It is the cheapest form of substation as it does not involve any building work.
What is 66KV substation?
66KV Control & Relay Panel It is intended to provide State-of-Art substation control, protection and metering system and shall be integrated with SCADA system. The protection, metering & control system shall be as per SLD and specification of 66KV CRP. The microprocessor based Transformer monitoring relay.
What are the different types of substations?
Substation Types: Although, there are generally four types of substations there are substations that are a combination of two or more types.
- Step-up Transmission Substation.
- Step-down Transmission Substation.
- Distribution Substation.
- Underground Distribution Substation.
- Substation Functions.
- Substation Equipment.
What is the 33 11kV substation equipment?
Power substation consists of: Switchgear: isolators, circuit breakers, earthing switches etc. Controlgear: current transformers, voltage transformers, contactors etc. Protection equipment: relays, fuses, surge arrestors etc.
What type of earthing is found in 11 kV substation?
Pipe earthing is the most common type used for residential quarters and strip earthing is used for 11 kV substation.
Why is 11kV 33kV 66kV?
Sending Voltage = 10kV x 10% = 11kV. While the receiving end voltage are 10kV due to voltage drop….If it is not related to the form Factor, What is it then?
| Sending Voltage | Receiving Voltage |
|---|---|
| 20kV x 10% = 22kV | 20kV |
| 30kV x 10% = 33kV | 30kV |
| 60kV x 10% = 66kV | 60kV |
What is the criterion for selection of 33kV 11kV or 66kV 11kV substation?
Thus, when a substation is of rating 66/11 kV, means substation has been designed to receive 80 MVA on 66 kV and it will distribute the received power on 11 kV. Again, substation of rating 33/11kV means, the substation has been designed to receive 5 MVA of power at 33 kV and it will distribute the same on 11 kV.
What are the different types of 11kv substation?
Other types of substations are very huge with different types of transformers, equipment, circuit breakers, and switches.
- Substation.
- Step-up Substation.
- Distribution Substation.
- Underground Substation.
- Switchyard.
- 11kv Substation.
- 220 kV Substation.
- 132 kV Substation.
Which type earthing is best?
The pipe earthing is better than another type of earthing, because it can earth more leakage current, and the possibility of braking in the earth wire is minimum.
What is GI earthing?
In areas with high soil resistivity, GI (Galvanized Iron) Earthing Electrodes give a low-impedance ground. The method dissipates lightning energy and other dangerous electrical fault currents, even in sandy or rocky soil conditions, when used in conjunction with Reflow Grounding Minerals.
Why 11kV is used in distribution system?
The 11kV lines are used in residential areas and is what feeds the local transformers, which then distributes power to the buildings in the area. 33kV lines on the other hand involve much higher voltages and are used to distribute power from one small sub-station to another.
Which CB used in substation?
Vacuum Circuit Breaker VCB is used for medium-voltage ratings (like 11KV and 33KV). It is widely used for the substation for the overload or high current protection.
What is LT and HT line?
A low-tension line is a low voltage line and a high-tension line is a high voltage line. In India LT supply is of 400 Volts for three-phase connection and 230 Volts for single-phase connection. High tension or HT supply is applicable for bulk power purchasers who need 11 kilo-Volts or above.
What is the difference between power station and substation?
A power station is a place where electricity is copied and substations change voltage. A place where substations change voltage.
