File talk:Electricity Grid Schematic English.svg

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Correction needed[edit]

Hello. There are some problems with the current image:

  • 50 kV isn't low voltage, check the the article high voltage.
  • The distribution part isn't correct. A typical distribution system is divided in 2 parts: primary and secondary distribution. Primary distribution is usually at something between 12 kV and 35 kV though systems as low as 4.16 kV are used; this is medium voltage. Secondary distribution feeds houses directly and the utilization voltage is used; this is low voltage.
  • There's usually a subtransmission system as well that feeds primary distribution systems with typical voltages of 69 kV or 138 kV. This is completely missing form the diagram. Sometimes there are lines that doubles as primary distribution and subtransmission working at around 35 kV (I.e: feed distribution —last-hop— transformers directly, and also substations which step down the voltage some more to around 12 kV before feeding distribution transformers).
  • The powers for the hydroelectric plant is misleading. en:Hydroelectric power plants have powers from the order of magnitude of 100 W to 10 GW.

Reference: Electric Power Distribution Handbook by Thomas Allen Short, 1st edition. There's also a book by that author called Electrical Systems Distribution and Equipment which is a reduced version, but the first chapter is identical as far as I can tell. However, any book on “Electrical power distribution” will serve as a reference. Could you please fix this image?. Regards and thanks. QrTTf7fH (talk) 01:09, 11 September 2014 (UTC).[reply]

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