Recent content by Wilimohi

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  1. W

    Control system management of different power plants in one utility grid

    Hi every one, especially our dear experts like Mr:CSA: Consider a big grid system where there are many power plants(hydro, steam, gas turbine), of course some plants are base loading and others are peak loading power plants. All these power plants of course have control systems to control...
  2. W

    Generator Power Factor drops to 0.3 On Inductive Load.

    Hello Is your generator(PMG)? or not, if its not I. e AVR supply is from generator s out put, it may loose supply feeding when AVR struggle increasing excitation to compensate for voltage drop due the reactive load, if fails then there will be no volts in generators terminals to supply AVR so it...
  3. W

    Parralled generators to grid, one of them becomes more capacitive

    And this what was done... I. e the diesel power station I mentioned is at the recevieng end of the transmission line which comes from a distance of about 350KM,and the voltage regulator of this diesel p. P is used to improve the decreasing voltage of the transmission line when it's stepped down...
  4. W

    Parralled generators to grid, one of them becomes more capacitive

    As far as I know the minimum distance for transmission line is about 200km, more than that you will suffer voltage drop at the receiving end.....
  5. W

    Parralled generators to grid, one of them becomes more capacitive

    I mentioned in my reply to you below : Now if I am parralled to grid with only one generator, and I saw that capacitive load, here I must decrease excitation This is by mistake forgive as excitation must be increased to over come the reactive leading current in gen. Stator
  6. W

    Change in armature current by changing torque only affect active power while armature current is affecting factor in both active and reactive power eq

    WTF So it's the reactive load which splits armature current into two compenents, Icos pf angle, which affects real power that can be varied and controlled by variations of fuel flow using the governor, and Isinpf angle which affects the reactive power and can be changed and controlled by varying...
  7. W

    Change in armature current by changing torque only affect active power while armature current is affecting factor in both active and reactive power eq

    Yes I already know this, but what I mean in my question is that in both equations of active and reactive power we find armature current so: What is the relation between armature current and reactive power?
  8. W

    Change in armature current by changing torque only affect active power while armature current is affecting factor in both active and reactive power eq

    It's under stood that active power equals square root 3times armature current times terminal voltage times power factor, it's also understood that to change active power you must change power flow of engine to change torque translated in Aternator to armature amperes. My question is that why by...
  9. W

    Parralled generators to grid, one of them becomes more capacitive

    Thanks swami good answer. Consider that I am working with one generator to feed this capacitive load, and I am not connected to grid, in this mode of operation the out put of my generator (I. e active+reactive) must be greater than or equal to load demand, other wise I must parallel one or two...
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    Parralled generators to grid, one of them becomes more capacitive

    A diesel power plant, consist of 3 generator sets, each installed capacity is 3.1 MW,. 8pf,50hz,actual capacity of each generator now is 2.5 MW, due to running hours and maintenance. 11KV feeder come from the substation to the bus bar of the diesel plant, where the diesel generator sets...
  11. W

    Voltage and reactive powercontrol

    Continuation Winding temperature!!! Isit so?
  12. W

    Voltage and reactive powercontrol

    You said: If there are zero VArs/kVArs/MVARs flowing in a generator's stator windings when the machine is connected to the grid (the power factor will be 1.0!), and the amount of excitation being applied to the generator's rotor windings from the AVR is decreased, and nothing is done to the...
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    Voltage and reactive powercontrol

    Thank you Mr TFU for your kind response to my questions, as you said the subject is difficult, but I found your response yo be excellent, still so many questions a rise but for now: 1/you said if you increase excitation without any change in real load, so if I ever try to increase excitation to...
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    Voltage and reactive powercontrol

    I know the subject was many times discussed here, but pls will experts help me and answer my questions: Assume we are using diesel generator set, in a power plant in which we have say three generator sets each [email protected] pf, 11KV,50 hz. The three generator sets are parallel and connected to grid...
  15. W

    Capability curve_derating factors

    MWO I send you my email which is: [email protected]
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