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  • Users: electpower
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  1. electpower

    Choosing the right rating of power plant

    When the natural resources permit to build a Power plant with a total generation capacity of 800 MW. What factors determine the rating of the power plant, when I have to choose between 2 x 400 MW and 1 x 800 MW ?
  2. electpower

    Connecting a wind power station to existing net (GRID)

    Could any one suggest what should be calculated in order to connect a wind power plant or any power generation plant to the existing net/grid. Where can i get information regarding the above said issue. Best regards electpower
  3. electpower

    Capacitor bank on low voltage side of the transformer

    Hello, I heard from my collegue that a capacitor bank has to be installed in the low voltage side of the generator step up transformer, which is connected to the generator. The high voltage side of the generator step up transformer is connected to the network (grid). He also mentioned that a...
  4. electpower

    Neutral conductor dimensioning

    "Preferred neutral conductor options include 50% or 100% of the phase conductor. In limited cases, it is also possible to select a conductor rating up to 200%." The above lines were stated in the ABB- MNS panels documents. Why is the neutral conductor dimensioned sometimes lesser than the phase...
  5. electpower

    SURGE ARRESTER (SELECTION)

    I have trouble with understanding the selection of surge arrester This is regarding the surge arreter for 200kV sytem connected to the overhead line on one side and to a cable which is 50 meter long connected to the transformer on the other side, this surge arrester has to protect the...
  6. electpower

    Testing relays

    Can someone give me procedures for the testing of Distance protection relays, generator load unbalance protection relay, gen. undervoltage relay
  7. electpower

    High Voltage CLEARANCE

    Please have a look at the attachment. The Red circle shows the three phase connection of Isolated phase bus bar to the generator .The rated voltage of the generator is 21kv, Which means the Um value is 24kv, from IEC the clearance is 220mm, if choose a lightning impulse voltage of 125kV. Say i...
  8. electpower

    SFRS

    I was preparing list of signals between high voltage switchyard and power plant. I met with a signal SFRS -On and SFRS - OFF ( For a Generator operating under SFRS) Can some one tell me what does "SFRS" mean ? What is it?
  9. electpower

    Zero sequence component of SC current

    Why is the zero sequence component of the grid very high (say 60kA) in comparison with the generator step up transformer( around 3kA) connected to it.Though both of them have the same voltage level.?? Is it because of the short circuit impedance, or is it because of some other factors??
  10. electpower

    Short circuit current

    How do One calculate the DC and AC time constant of the short circuit current

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