Difference between revisions of "National Grid"

Latest revision as of 06:39, 15 December 2019

Key Stage 4

Meaning

The national grid is a network of power stations, transmission lines and transformers which generate and transmit electricity across the United Kingdom.

About The National Grid

The National Grid consists of several stages:

Power Stations - Electricity is generated with a potential difference of around 25kV.
Step Up Transformer - The potential difference of the electricity is increased to around 400kV for long distance transmission. This is because the higher potential difference means a lower current so less energy will be dissipated through heating the transmission lines.
Long Distance Transmission Lines - Electricity is transmitted at very high potential difference (400kV) so it is kept on very high transmission lines.
Step Down Transformer - The potential difference of the electricity is lowered to be sent to factories and neighbourhoods at 33kV.
Short Distance Transmission Lines - Electricity is transmitted at 33kV over a short distance.
Neighbourhood Step Down Transformer - The potential difference is lowered to 230V for use in houses.


A diagram of the national grid.

References

@@ Line 29: / Line 29: @@
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 :[https://www.amazon.co.uk/gp/product/1782945970/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945970&linkCode=as2&tag=nrjc-21&linkId=a120d24dcc7cc7a58192069a3aafc1d2 ''National grid, pages 95, 96, 310, 312, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA '']
+====Edexcel====
+:[https://www.amazon.co.uk/gp/product/1782945733/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945733&linkCode=as2&tag=nrjc-21&linkId=2a2dbec9db6bf5766c0458d908fa0a52 ''National grid, page 91, GCSE Physics; The Revision Guide, CGP, Edexcel '']
+:[https://www.amazon.co.uk/gp/product/1292120223/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120223&linkCode=as2&tag=nrjc-21&linkId=068ecf40278c32406a7f1c6e66751417 ''National grid, pages 156, 176-177, GCSE Physics, Pearson Edexcel '']
+:[https://www.amazon.co.uk/gp/product/1782948163/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948163&linkCode=as2&tag=nrjc-21&linkId=0fdbfd5dd397d6e24a9dfb250f08587f ''National grid, pages 290, 291, GCSE Physics, CGP, Edexcel '']
+:[https://www.amazon.co.uk/gp/product/1292120193/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120193&linkCode=as2&tag=nrjc-21&linkId=572df39392fb4200db8391d98ae6314e ''National grid, pages 396, 410, GCSE Combined Science, Pearson Edexcel '']
+====OCR====
+:[https://www.amazon.co.uk/gp/product/1782945695/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945695&linkCode=as2&tag=nrjc-21&linkId=ceafcc80bcad6b6754ee97a0c7ceea53 ''National grid, page 214, Gateway GCSE Combined Science; The Revision Guide, CGP, OCR '']
+:[https://www.amazon.co.uk/gp/product/1782945687/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945687&linkCode=as2&tag=nrjc-21&linkId=9a598e52189317a20311d7a632747bc9 ''National grid, page 95, Gateway GCSE Physics; The Revision Guide, CGP, OCR  '']
+:[https://www.amazon.co.uk/gp/product/0198359837/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359837&linkCode=as2&tag=nrjc-21&linkId=3c4229e8b023b2b60768e7ea2307cc6f ''National grid, pages 230-231, Gateway GCSE Physics, Oxford, OCR '']