Hi, To me it shows that Matpower tries to initiate the voltage of generator bus with the magnitude from gen(on, VG) and the phase angle from the bus voltage phasor V0(gbus). This makes good sense when the V0 vector is initiated from a known solution.
HTH Yongtao On 7. nov. 2013, at 06:27, "Vincent Roberge" <[email protected]> wrote: > Good day all, > > I am a student and I am trying to fully understand the N-R method for > power flow analysis. I wrote a C program that does it and I compare my > output to the one generated by MATPOWER. Everything matches until I > try case2736sp. In this case, the generator setpoint voltage and the > initial guess for the bus voltage associated to the generator do not > match. Instead of forcing the voltage of the bus to the generator > setpoint, MATPOWER uses some sort of a ratio which I don't undestand > at all. This all occurs in the file "runpf.m" at line 201: > > V0(gbus) = gen(on, VG) ./ abs(V0(gbus)).* V0(gbus); > > How does this work? There must be something I don't understand about > generator setpoint. What is generator setpoint? Anyone willing to help > and explain me that line of code. Thanks in advance. > > > -- > Vincent > > >
