What is the substation used for?


Question by: Loretta Marino | Last updated: January 6, 2022

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Substations perform one or more of the following functions: interconnect multiple HV power lines at the same voltage level, creating a network node (via the busbars); … convert the voltage from AC to DC and vice versa (conversion substations).

What is meant by an electrical station?

The electrical substation (SSE) plants of the railways sort, transform and convert electrical energy to power the electrical traction lines.

What are transformer stations used for?

Part of a network consisting of the complex of equipment used to transfer electricity between networks at different voltages.

What is meant by medium voltage?

In particular: – for alternating current, medium voltage is considered to be between 1,000 and 15,000 volts; – for direct current, on the other hand, the interval between 1,500 and 30,000 volts is considered medium voltage.

How does the distribution of electricity work?

The distribution takes place through the activation of a complex system of typical network infrastructures that brings the electric energy up to the final user, who manages his electricity flow through the common current switches.

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How does electricity arrive in our homes?

of a conductor. The electric current distributed in our homes is produced in power plants by gigantic generators, the alternators. The moving part of the alternator (the rotor) is set in motion by a turbine.

Who manages the Medium Voltage?

The distributor manages the last part of the electricity network that reaches our homes and is the owner of the meters connected to it.

What tension comes in the houses?

has the purpose of supplying electricity in the form of the desired voltage, in domestic networks it is usually a nominal voltage of 230 V in alternating form with an operating frequency of 50Hz (read 50 Hertz).

What is low voltage used for?

As we have just said, the systems in our homes are low voltage. A voltage between 50 and 1000 V, in fact, is more than enough for the daily needs of a home and, therefore, nothing more is needed.

Why is high voltage current transported in thermoelectric power plants?

The aim is to bring energy from production power plants to places of use, cities and industrial areas, which can be tens or hundreds of kilometers away. The geographical position of the plants is in fact binding in the case of hydroelectric, geothermal or wind power plants.

Why is the transmission of electricity over great distances with high voltage lines?

When the current leaves the high voltage line to enter our homes, a transformer lowers its voltage and raises its intensity. … Thanks to the use of transformers, the AC lines allowed the transport of energy over very large distances.

Why do you carry high voltage current?

Why is the energy transmission in high voltage? … The transmission is carried out in high voltage since in this way, with the same power transported, there is greater efficiency and lower losses due to dissipation (especially over long distances and considering the large quantities of energy involved).

How is an electrical substation made?

The electrical substations being part of the transmission network, are made up of high voltage (HV) components which are collectively called the primary system. … In addition to the HV part, the stations also include a medium voltage (MV) and low voltage (LV) part, which is called the secondary system.

Who pays for the current of the trains?

In practice, the State Railways have a subsidized electricity tariff and the difference is paid by all other electricity users. These subsidies date back to 1962, when electricity was nationalized and Enel acquired grid segments that then belonged to the Railways.

What are the wires on the trains for?

The overhead contact line or overhead intake line is used to transmit electricity to trams, trolley vehicles and trains, even at a distance from the electricity generation points.

What voltage reaches the Enel meter?

The supplies of electricity for domestic use are usually in LV (low voltage) single-phase with voltage 230V or three-phase with voltage 230 / 400V, however the supply voltage is a data reported in the electricity supply bill.

What kind of electricity is there in the house?

In our homes we usually have a single-phase system with alternating current at 220-230 volts in voltage at 50-60 hz composed mainly of 3 conductor wires each of which is distinguished from the other through a certain color: phase (usually black or brown , sometimes even gray), neutral (…

How many volts is the high voltage?

Electricity comes from power plants and from abroad to the transmission grid with a voltage of 380 kV or 220 kV. This stage is called the very high voltage level. The voltage ranges between 36 kV and 150 kV are called the high voltage level.

Who manages the electrical substations?

Another distinction concerns public and private substations (or user substations): the former are owned by the electricity distribution body and are used to power private LV users with 230 V single-phase voltage and three-phase voltage. 400 V; the latter are owned by the user and …

How does high voltage work?

High voltage is defined as an electrical voltage greater than tens of thousands of V. The CEI has defined a scale of normal values ​​to be used in electrical transmission equipment / networks, which are between 60 kV and 150 kV (more rarely 220 kV) for high voltage and 380 kV for very high voltage.

How many tensions are there?

There are two types of voltage: AC (alternating current) and DC (direct current). Both exist side by side and have their own characteristics. An electrical voltage where the voltage changes between positive and negative is called an alternating voltage.

What changes between transmission and distribution in electrical systems?

Note that the transmission line carries energy or electricity in the three-phase power system, which is used in industry and by large consumers. The distribution system, on the other hand, usually requires a single-phase power supply system to transport electricity.

Who manages the electricity transmission network in Italy?

Through the company Terna Rete Italia, the Terna Group manages the National Transmission Grid with over 63,500 km of high voltage lines, guaranteeing its safety, quality and cost-effectiveness over time.

Who is the local distributor?

Who is the local distributor? The local distributor is the company in charge of transporting and delivering electricity through the medium and low voltage distribution networks, and gas through the city networks.


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