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The image shows the transmission and distribution system of the electric current, through a transformer station or electrical  substation.

This distribution circuit starts from the nuclear power plants, thermal power plants, wind or hydroelectric structures, which produce electricity.

They are shown in the upper left, by a vertical tower with a chimney and a square-shaped building, embossed, connected by a wire or cable, rendered as a wavy line, by a high-voltage electric pole.

The high voltage electric pole is highlighted in the top center, as two inclined and thickened lines, joined at the top,with the upper end connected to another horizontal line with the ends bent, which in turn distributes electricity through a cable connected to transformer station.

The transformer station or the electrical substation is part of the electrical distribution networks, with the role of reducing the high voltage from the electric pole, as it is needed, so that the modified voltage electric current is compatible for the public consumption.

The electrical substation is shown on the right, as a horizontal rectangle, embossed, with the upper corners cut out and joined by two blank squares. From one end the high voltage electricity is collected and from the other it is distributed modified to a medium voltage electric pole.

The electric pole with medium voltage can have its pillar made of concrete or wood and supports the power lines or cables through which electricity is distributed to public consumption.

The medium voltage pole is shown in the bottom center, as a vertical and thickened line, crossed on the top by two other parallel and horizontal lines.

The power lines on the concrete pillar are connected to the consumer’s electrical network, which is represented by a house, highlighted in the lower left, as an embossed square with a triangular roof and the lower center door marked as a blank rectangular cut into the square.

General information

Since ancient times, energy resources have been considered true treasures. In the beginning, for man to be able to carry out activities to provide him with food and clothing, domestic animals were used, especially in agriculture. With the passage of time and with the industrial revolution, the diversity and value of energy resources increased, because other ways of working, other energy consumers, emerged. Utility cars, tractors and other equipment have appeared to be used to prepare the fields and collect the crops. In addition, modern lighting elements have emerged, which, compared to the classical ones that used fire to light, use electricity. Moreover, modern ways for the transmission of information, namely telecommunications, which operate based on electricity, have emerged.

The electricity generator is designed to convert various types of energy into electricity. On a large scale, electricity is obtained through power plants.

By the time electricity reaches our homes, it goes through three phases: generation, transformation, and distribution. For all this process, an extensive electrical energy system was created, consisting of generators, distribution installations within power plants, power stations in power plants and power grids, power stations in power grids, subscriber transformer stations, etc.

To better understand, we need to know that the unit of measurement for the electrical voltage is the volt. Transformation stations are the ones that receive electricity from generators, i.e. power plants. After the current reaches the power stations, it is converted from one voltage to another according to needs and destination, and then is distributed to consumers. For example, a household consumer will receive electricity from the two hundred twenty Volt transformer station, and an electric locomotive will receive it from another transformer station, approximately twenty thousand Volt.

Did you know that the man who set up power plants and the transmission of power remotely is Nikola Tesla? He discovered the polyphasic systems through which he could transmit alternating current over long distances. Continuous current cannot be transmitted efficiently at a long distance. It was also Tesla who thought about transmitting electricity without cables. Even the wireless charging systems of phones are based on things discovered and experienced by Nikola Tesla.

The first hydroelectric power plant was built at Niagara Falls in 1893 and was the one that transmitted power to Buffalo, New York, starting in 1896.



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