A single line diagram of a 33/11kV substation is shown below. It consists of a 33 kV incoming feeder, a 11 kV outgoing feeder, and a transformer. The transformer has a capacity of 100 MVA.
A 33/11kV substation is a type of electrical substation that is used to supply 33,000 volts (33 kV) of alternating current (AC) to 11,000 volts (11 kV) AC. This type of substation is typically used in areas where there is a high demand for electricity, such as in industrial areas or large cities. The single line diagram for a 33/11kV substation is shown below.
As can be seen from the diagram, the 33/11kV substation consists of two main parts: the transformer and the switchgear. The transformer transforms the voltage from the high voltage side (33 kV) to the low voltage side (11 kV). The switchgear controls the flow of electricity between the transformers and equipment on both sides of the substation.
33/11Kv Substation Material List
A 33/11kv substation is a power generation, distribution, and conversion facility where electricity is generated at 33,000 volts and delivered to customers at 11,000 volts. The material list for such a substation will include the following:
-1x High voltage switchgear (33kv)
-1x Low voltage switchgear (11kv)
-2x Power transformers (33/11kv)
-1x Lighting arrestor
-1x Earthing system
Credit: electrical-engineering-portal.com
What are the Equipment in 33 11Kv Substation?
In a 33/11kV substation, the equipment includes a transformer, circuit breakers, CTs and PTs, an earthing system, and cabling. The transformer steps down the voltage from 11kV to 33kV. The circuit breakers protect the equipment from overloading.
The CTs and PTs measure the current and voltage respectively. The earthing system provides a safe path for any stray currents. The cabling connects all of the equipment together.
What is the Difference between 33Kv And 11Kv Lines?
In the United States, the standard voltage for distribution lines is 120/240 volts (60 Hz). The secondary winding of the transformer supplying this voltage has a turns ratio of 1:240. The primary winding is connected to a 33 kV power supply (in other countries 400 kV or 132 kV may be used).
The high voltage side of the transformer is known as the “supply” or “primary” while the low voltage side is known as the “secondary”.
The 11kV refers to the fact that these are 11000 volt lines. This is also called Extra-High Voltage orEHV.
In many places aroundthe world, such as Europe and Asia,EHV lines are used for long distance transmission because it lowers energy losses due to resistance in conductors.
Which Type of Circuit Breaker is Used in 33 11 Kv?
A circuit breaker is a device that is used to open and close an electrical circuit. The two main types of circuit breakers are air circuit breakers and oil circuit breakers. Air circuit breakers use compressed air to extinguish the arc, while oil circuit breakers use oil to cool the arcing contacts.
33 11 kV uses an oil circuit breaker.
What is 33 11 Kv Transmission Line?
A 33 11 kV transmission line is a high voltage power line used to transmit electricity over long distances. These lines are typically made of steel and are supported by wooden or concrete poles. The voltage of the line is high enough that it can cause serious injury or death if someone comes into contact with it, so it is important to be aware of its location and keep clear of it.
EE-303 lecture 16: Single Line Diagram of 33kv/11kv sub station/BTER/How to draw /electrical study
Conclusion
A 33 11kV substation single line diagram is a drawing that shows the electrical components of a substation in a simplified way. It is used by engineers to understand the substation’s electrical layout and to help plan for its construction or expansion. The single line diagram includes all of the equipment in the substation, including transformers, circuit breakers, busbars, and cables.
It also shows how these components are connected to each other.