Three Phase Systems Assignment

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Analyse the need for selecting the different voltages used for different parts of the generation, transmission and distribution of electricity.
Three Phase Systems Assignment 1
D1
Sean Smith JLR

Electricity is the most used source of power in the modern world. We something that is connected too electricity practically all of the time in the modern era from mobile phones to the lighting in our homes. Thinking about where our electricity comes from is something that we never really think about but the cycle that electricity goes through before reaching us is quite a long process. This process can be split down to three key things that electricity goes through before it reaches our homes. These sections can be slit down to the:

1. Generation …show more content…

The electricity leaves the plant which it is generated at very high voltages, either 275kV or 400kV. The first place that the voltage must get too before it gets too the end user is the supergrid. The supergrid is a large transmission network over the country and beyond which transmits electricity over vast areas. The supergrid receives the 275kV or 400kV from the power plant and steps it down too 132kV which is the voltage that travels along the supergrid network. The supergrid steps down the voltage in a delta-delta format. This means that the three phase transformer is connected in a delta format which means that there is no neutral line and there is only the three phases. In a delta connected format phase voltage identical on the line voltage. The delta format is better at this voltage as the neutral isn’t present as it operates better at higher voltages without the neutral. There are many ways that the voltage can be carried before getting to the supergrid. As a fair quantity of the United Kingdom’s power comes from overseas the voltage often has to travel distance to get where it needs to get too. There are multiple ways to transmit the voltages to where they need to go, a few examples of means of transmission are pylons, underground transmission

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