"Generator Capability Curve" derived from its basic phasor diagram. The video is for quick understanding about the operational aspects of a synchronous generator.
Amazing how much can be explained in a 7 minute video, I have been reading about this for 2 weeks and slowly loosing the will to live! Good work, very helpful.
Hello sir, I don't know whether you are going to read this comment or not ,but my doubts is which factor (P or Q) changes when we say load is changing. This doubt arises because in most of the books it is mentioned that either load is contant or excitation emf is constant. It will be very beneficial if make a video regarding this issue..thanks a lot for such lectures
ABHIMANYU RAJBHAR Due to the fast action of AVR Q seems constant. Reactive power flows due to the difference in magnitude of voltage between two points of the power system. AVR is able to maintain constant voltage always. So, Only P changes. Change in Q is negligible and pf remains 1
Ok , the over-excitation limiter is restricted by the max field current , and the under-excitation limiter is confined by the maximum power angle of operation right???
Mr. Kumar if it is possible, could you explain the efect on the MVAR due to excitation current and MW due to the turbine torque, that will be really helpfull, thanks again.
i have explained the whole phenomenon of MW building in synchronizing torque video in my channel, the load angle decides the MW and the load angle adjust itself by the help of primemover whereas MVAR depends upon grid loading conditions, AVR regulates it as per the requirement by changing the excitation current, by increasing excitation magnetic flux increases, followed by increase in induced voltage & viceversa
A small doubt: is there a single phase synchronous generator? I believe not, so I suggest instead of multiplying by the term v/x at 2:11, multiply by 3v/x assuming it’s 3 phase as it’s the most commonly used practically. Correct me if I am mistaken, thank you.
I have a doubt sr.. U are saying reactive power absorbing and delivering but why .what do you mean by this 🙏Because what i have read till is reactive power neither absorbed nor delivered it just oscillate back and forth bw source and load... Please explain this .....
During day time the loading of grid is higher. So the reactive power absorbed by these total loads is higher than the reactive power supplied by line capacitance. These extra requirement of reactive power affects the operating point at capability curve
I think I know that. The generator sends reactive power during daytime, because the Harmonics Injecting Loads are in excess amount during the day. There is core saturation due to harmonics. Reactive Power is needed to compensate that. But at night, (when we are expected to sleep), there's no need to supply that extra reactive power. thus the generator receives and operates in the second quadrant. i hope i am correct but please confirm ;-)