What does substation stand for?
Word forms: (regular plural) substations. noun. (Electrical engineering: Electrical power, Distribution) A substation is an installation at which electricity is received from one or more power stations for conversion from AC to DC, reducing the voltage, or switching before distribution by a low-tension network.
The main difference we find between a transformer station and an electrical substation is the magnitude of the installations. While transformer stations are linked to high/medium-voltage transmission systems, electrical substations are designed to support and transform lower voltages.
The substation may include the following equipment:
Power transformer or distribution transformer (depending on substation type) Circuit breakers. Disconnecting switches. Isolators.
It is classified into four categories- step-up or primary substation, primary grid substation, secondary substation, and step-down or distribution substation.
The resistivity of gravel is about 5000 Ohm-m and thus, when gravel is filled in outdoor Switchyards & Substations, it increases the tolerable touch & step potentials of humans accessing the outdoor Switchyards & Substations, thereby reducing the risk of electric shock.
For a continuous power supply, the only choice is to use a DC supply for the substation. DC supply ensures the consistent flow of power and that there will be less reaction time when changing over to an AC supply or providing power to devices in an outage.
There is no need for any extra “safe distance” between a property and a substation to achieve compliance, and there are no restriction on how close a property can be to a 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.
A typical residential substation serves approx. 1,500 customers.
Is it healthy to live near a substation?
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)
Substations may be owned and operated by an electricity supplier or may be owned by a large industrial or commercial customer. Generally, substations are unattended, relying on remote supervision and control.