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  1. Elec777

    Transformers to feed Electric Arc Furnace steel plant

    Dears, we have 2X20MVA power transformers 66/33 KV WORKING IN PARALLEL TO FEED AN ELECTRIC ARC FURNACE (WORKING THROUGH INVERTER )AND ITS AUXILURIES&UTILITIES, THE TOTAL LOAD IS 35MVA, WHAT ARE THE RISKS AND POSSIBLE DANGEROUS INVOLVED IN CASE OF ONE OF THE TWO TRANSFORMERS FAIL, AND WHAT'S...
  2. Elec777

    ELECTRIC ARC FURNACE

    THANK YOU SO MUCH SCOTTYUK, (You might consider supporting local generation by operating in parallel with THE utility)THIS IS WHAT I PERSONALLY PRACTICED IN A PLANT THAT HAS 20MW STEAM TURBINE FOR LOCAL GENERATION WORKING IN PARALLEL WITH THE GRID, BY ADJUSTING THE LOAD SHARE CONTROL OF THE...
  3. Elec777

    ELECTRIC ARC FURNACE

    dears, I found this paper gives good ideas regarding the case we are discussing.https://files.engineering.com/getfile.aspx?folder=a1ab033c-4938-4e4c-9235-3a9537863469&file=2_36.pdf
  4. Elec777

    ELECTRIC ARC FURNACE

    what I understand from the answers: 1- most of the colleagues are not in favor of an isolated system of diesel generators. 2- am thinking about turbines, I mean isolated combined cycle power plant has 2.5 power capacity more than the EAF. 3-the turbines will be equipped with a highly responsive...
  5. Elec777

    ELECTRIC ARC FURNACE

    WE WILL BE HAVING IN OUR COMPANY AN ELECTRIC ARC FURNACE NEXT YEAR, IS IT POSSIBLE TO FEED THE SAID FURNACE BY DIESEL GENERATORS?
  6. Elec777

    STEAM TURBINE VANE MODIFICATION

    DEARS, DUE TO LACK OF ENOUGH WATER, I DECIDED TO GO WITH DRY COOLING INSTEAD OF WET COOLING FOR OUR COMBINED CYCLE CONDENSING STEAM TURBINE, FOR A SURPRISE I HAVE BEEN TOLD THAT I NEED TO MODIFY THE ROTOR VANES IN THE REAR SIDE OF THE TURBINE. IS THIS TRUE? IF YES THEN WHY?
  7. Elec777

    power plant project management organization chart

    am working as a power plant project manager, I prepared the project management organization chart I need some ideas on this.
  8. Elec777

    connecting isolated power plant to loads

    dears, are there any other companies can do this job.
  9. Elec777

    100 MW electric arc furnace

    Dears, we are discussing the case of supplying power from a 230 MW combined cycle power station directly to a 100 MW electric arc furnace, the power station is connected to the utility grid, because utility put on me some restrictions to operate the furnace on the grid, I convinced the power...
  10. Elec777

    power plant construction team

    dears, it is a 250MW combined cycle power plant, I meant to say what are your suggestions for the construction team organizational chart. thanks
  11. Elec777

    connecting isolated power plant to loads

    thanks a lot, kindly could you please advice which a good reputable company that supplies this type of control?
  12. Elec777

    connecting isolated power plant to loads

    why it is more difficult to connect a combined cycle power plant to loads than connecting it to the utility grid and what is the best way to connect the isolated power plant to the loads?
  13. Elec777

    power plant construction team

    am building the team for power plant construction, grateful if can give ideas what positions are in this job?
  14. Elec777

    oil filled transformers

    Dears, I want to ask whether it's better to ship the transformer filled completely with oil or empty?
  15. Elec777

    AC 3 phase voltage stabilizer ( using servomotors ) versus auto transformer

    thanks a lot, Waross, its great you are on the forum thanks to everybody in the forum
  16. Elec777

    AC 3 phase voltage stabilizer ( using servomotors ) versus auto transformer

    Dears, I really need to do something, I have a problem with big compressor fails to start sometimes, I tend to go with Waross suggestion for open delta autotransforme . Dear Waross, could you please advise more information regarding your suggestion of installing two open delta 3phase...
  17. Elec777

    AC 3 phase voltage stabilizer ( using servomotors ) versus auto transformer

    Dear Waross, 1- voltage fluctuates between 373 to 378 volts 2- you have suggested installing two autotransformers in open Delta. grateful if you could explain to me why two transformers, not one. best regards
  18. Elec777

    AC 3 phase voltage stabilizer ( using servomotors ) versus auto transformer

    Dears, The problem is: compressor motor nameplate reads 400/415 volts while supply voltage at site is 380volts, what is the best selection for increasing the supply voltage from 380 to 400 volts AC, a 3 phase voltage stabilizer ( using servomotors ) or autotransformer, please consider that...
  19. Elec777

    Compressors of chiller trip upon starting

    dears, appreciate your thoughts about the problem, compressors starting is DOL, no soft starters no autotransformeres , since the compressors rated voltage is 400v i believe we need to increase the supply voltage from 380v to 400-415v and apply compensating capacitors for each compressor to...
  20. Elec777

    Compressors of chiller trip upon starting

    Dear Waross, I have taken the measurements and as I have a little experience with chillers compressors, do you agree that we add reactive power compensating capacitors to each compressor, it may help in in the issue of voltage drop. best...

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