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 in the area through lower voltage distribution lines.

What are the types of substation?

The different types of substations mainly include Step-up Type Substation, Step-down Transformer, Distribution, Underground Distribution, Switchyard, Customer Substation, and System Station.

What is substation and its function?

Substations transform voltage from high to low, or the reverse, or perform any of several other important functions. A substation may include transformers to change voltage levels between high transmission voltages and lower distribution voltages, or at the interconnection of two different transmission voltages.

What is the difference between a substation and a transformer?

is that substation is a site where electricity supplied by long-distance (high-voltage) transmission lines is transformed and/or regulated for local (low-voltage) distribution while transformer is something that transforms, changing its own or another thing’s shape.

Why DC is used in substation?

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.

How much voltage is in a substation?

A typical substation at a power plant Typical voltages for long distance transmission are in the range of 155,000 to 765,000 volts in order to reduce line losses. A typical maximum transmission distance is about 300 miles (483 km). High-voltage transmission lines are quite obvious when you see them.

What is substation and its types?

The substation is the medium of transferring the power from generating unit to the consumer end. It consists different types of equipment like transformer, generator, power cable which helps in the power transmission. The substation which generates the power is known as the generating substation.

What is the converting substation?

In DC power transmission lines, converter substations are used to convert a three-phase current to a direct current (rectification) at the sending end of the line and to achieve a reverse conversion (inversion) at the receiving end of the line. Converter stations are located at the terminals of a DC transmission line.

What is called outdoor substation?

A substation which is used for all voltage levels between 55 KV to 765 KV is called outdoor substation. Such type of substation requires less time for construction but uses more space. The outdoor substations are mainly classified into two types, namely pole-mounted substation and foundation-mounted substations.

How does a power substation work?

The three-phase power leaves the generator and enters a transmission substation at the power plant. This substation uses large transformers to convert or “step up” the generator’s voltage to extremely high voltages for long-distance transmission on the transmission grid.

What is the heart of substation?

The transformer is the heart of the substation. The transformer changes the relationship between the incoming voltage and current and the outgoing voltage and current. Substation transformers are rated by their primary and secondary voltage relationship and their power carrying capability.

What is ACDB and DCDB in substation?

ACDB it comprises of breakers, isolators, current and voltage monitoring. It can provide protection. While DCDB is used for the purpose of protecting the system irrespective of it being solar panels or batteries.

How many volts are in a lightning strike?

A typical lightning flash is about 300 million Volts and about 30,000 Amps. In comparison, household current is 120 Volts and 15 Amps. There is enough energy in a typical flash of lightning to light a 100-watt incandescent light bulb for about three months or the equivalent compact fluorescent bulb for about a year.

Can a 240 volt kill you?

An electric shock from a 240 volt power point can kill you, but on a dry day your car door can zap you with 10,000 volts and just make you swear.

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 indoor type substation?

Indoor substations and transformer substation, as well as, high voltage switchboards consist of a series of open and enclosed chamber or compartments. The main equipment for this installation is arranged in these compartments. In such substation, the cell structure is constructed of concrete or bricks.

Is living near a substation safe?

Some EMFs naturally occur in the environment and we’re exposed to these every day. However, EMFs emitted by pylons and substations can raise the risk of developing health problems when placed close to people and buildings. Health issues may include: Different types of cancer (or an increased risk of cancer)

Who is responsible for electricity substations?

Electricity distribution companies
Electricity distribution companies are responsible for the network of power lines, underground cables, substations etc., that get electricity to your home or business in the area where you live.

Does a substation generate electricity?

At large power plants, electricity is produced at a somewhat low voltage of around 10-30 kilovolts or kV. So, prior to distribution, the voltage of the grid needs to be brought back down, again using transformers located within a substation.

What is ACDB?

A distribution board (also known as panelboard or breaker panel) is a component of an electricity supply system which divides an electrical power feed into subsidiary circuits, while providing a protective fuse or circuit breaker for each circuit.

Types of Electrical Substations based on Applications

• Step up Substation.
• Step Down Substation.
• Primary Substation.
• Secondary Substation.
• Distribution Substation.
• Mobile Substation.
• Industrial Substation.
• Converter Substation.

What is a substation and why it is needed?

A substation is a part of an electrical generation, transmission, and distribution system. Substations transform voltage from high to low, or the reverse, or perform any of several other important functions.

What does an electrical substation do?

Substations convert the power system voltage from transmission levels to distribution levels so that it can be safely and efficiently delivered down our streets.

How does a substation work?

The electricity is transmitted at very high voltages and low currents to reduce the heat, eddy currents, and other transmission losses. The substations are where the voltages are increased to high values by using step up transformers, and after the transmission, they are again stepped down for distribution.

Is used in substation?

A substation is an electrical system with high-voltage capacity and can be used to control the apparatus, generators, electrical circuits, etc. Other types of substations are very huge with different types of transformers, equipment, circuit breakers, and switches.

What is called indoor substation?

A substation in which the apparatus is equipped inside the substation building is called indoor substation.

What is converting substation?

In DC power transmission lines, converter substations are used to convert a three-phase current to a direct current (rectification) at the sending end of the line and to achieve a reverse conversion (inversion) at the receiving end of the line.

Is living near a substation dangerous?

How does the operation of a substation work?

Operation of a Substation. Electricity is generated in a thermal power plant, hydroelectric power plant, and nuclear power plant, etc. This electricity is then supplied to a transmission substation near the generating plant. In the transmission substation the voltage is increased substantially using step up transformers.

What do safety devices do in a substation?

Safety devices like circuit breakers and fuses: These safety devices are provided for protecting the machinery on the distribution circuit as well as in the substation against high short circuit currents.

What is the input voltage for a distribution substation?

The input for a distribution substation is typically at least two transmission or sub-transmission lines. Input voltage may be, for example, 115 kV, or whatever is common in the area.

Where is the switchgear located in a substation?

Switchgear is a part of the substation. Switchgear in substations are located on both sides of high voltage, low voltage sides of large transformers units. The Switchgear carries out the functions of carrying, making, and breaking the normal load current like a switch.