Difference between revisions of "National Grid"
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:[https://www.amazon.co.uk/gp/product/1782946403/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782946403&linkCode=as2&tag=nrjc-21&linkId=32a0abb60dff015b15b50e9b1d7b4644 ''National grid, pages 92, 93, GCSE Combined Science Trilogy; Physics, CGP, AQA ''] | :[https://www.amazon.co.uk/gp/product/1782946403/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782946403&linkCode=as2&tag=nrjc-21&linkId=32a0abb60dff015b15b50e9b1d7b4644 ''National grid, pages 92, 93, GCSE Combined Science Trilogy; Physics, CGP, AQA ''] | ||
:[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 ''] | :[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 ''] | ||
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| + | ====Edexcel==== | ||
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| + | :[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 ''] | ||
Revision as of 15:28, 23 November 2019
Contents
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
AQA
- National grid, page 191, GCSE Combined Science; The Revision Guide, CGP, AQA
- National grid, pages 308-9, GCSE Combined Science Trilogy 1, Hodder, AQA
- National grid, pages 34, 98, GCSE Physics; The Revision Guide, CGP, AQA
- National Grid, pages 54-5, 238-9, GCSE Physics, Hodder, AQA
- National Grid, pages 68-9, 243, GCSE Physics; Student Book, Collins, AQA
- National grid, pages 92, 93, GCSE Combined Science Trilogy; Physics, CGP, AQA
- National grid, pages 95, 96, 310, 312, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA