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  1. Mahmoud Salem

    Relative rotor angle and Power after fault , Transient stability in ETAP

    It is a big network , the libyan national grid where i'm performing a study on the transient stability on the network on certain regions, are there any details in particular that would help?
  2. Mahmoud Salem

    Relative rotor angle and Power after fault , Transient stability in ETAP

    Hello all , After simulating the transient stability in ETAP in which a fault occurs in a network and it is cleared after 0.2 seconds , the relative angle and power of generators fall to zero after being a certain value before the fault. I also did exciter and PSS for the generator and it is...
  3. Mahmoud Salem

    Power Flow in hybrid AC/DC line.

    When a HVDC line and AC line are connected in parallel for power transmission, what determines the ratio of power that both lines would carry? Is it the resistance of the lines?
  4. Mahmoud Salem

    Rotor angle in a 4-machine system.

    When studying the rotor angle in the transient stability state in a 4-machine system, 2 of the machines display blank drawings. The other 2 are seemingly fine. I'm using ETAP as the simulation transfer. my question is, what could possibly be the reason in theory that this would happen , or...
  5. Mahmoud Salem

    HVDC transmission

    When performing a simulation to verify the power transmission through a HVDC link in ETAP software, it appears as though there is zero power transmission through it even though all parameters check out alongside the connections. What could be the problem?
  6. Mahmoud Salem

    ETAP and HVDC

    Hello, When using ETAP software and connecting a HVDC link in between 2 busbars , it appears as though there is zero power flow from the point of connection of the link up till the rest of the connected network. I made sure to revise all added data for the model but i couldn't figure out the...

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