What is switching operation?
Switching is the opening and closing of circuit breakers and disconnecting switches, which produces alteration of power system configu- ration and enhances the probability of achiev- ing load dispatching operations. 3279.
What are the 3 roles of a switch in a substation?
Substation Functions Switch transmission and distribution circuits into and out of the grid system. Measure electric power qualities flowing in the circuits. Connect communication signals to the circuits. Make interconnections between the electric systems of more than one utility.
What is the need of electrical substation?
Why do we have Substations? The purpose of a substation is to ‘step down’ high voltage electricity from the transmission system to lower voltage electricity so it can be easily supplied to homes and businesses through our distribution lines.
What is the difference between a substation and a switching station?
An electrical substation is typically a secondary station connected to an electrical distribution, generation or transmission station. A switching station is a particular type of substation where energy is routed either from different sources or to different customers.
Why do we use switching?
A switch is used in a wired network to connect to other devices using Ethernet cables. Switches keep traffic between two devices from getting in the way of your other devices on the same network. Switches allow you to control who has access to various parts of the network.
What are the main equipment of substation?
The following equipment are installed in distribution substations:
- Distribution Transformer.
- Circuit breaker.
- Lightning Arrester.
- Air Break (AB) switches / Isolator.
- Insulator.
- Busbar.
- Capacitor Bank.
- Earthing.
What is 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 switching substation?
A switching station is a substation without transformers and operating only at a single voltage level. Switching stations are sometimes used as collector and distribution stations. Sometimes they are used for switching the current to back-up lines or for parallelizing circuits in case of failure.
What is a substation what important equipment are found in a substation?
Distribution substation is a substation from which electric supply is distributed to the different users. In a substation there are numbers of incoming and outgoing circuits each having its isolator, circuit breaker, transformers etc. connected to bus-bar system. These equipment are mostly static type.
Why is DC supply used in substations?
The main reason for using DC supply in substation or power stations is to provide a continuous power supply to the control circuit. DC is a reliable source of power supply because it can obtain from batteries. So during power failure also, we have to provide the continuous power supply to the control circuit.