Dear Naeme the voltage of state estimation may not be same as calculated by power flow that is why the word estimation is there.
Secondly, the deviation in angle estimates is relatively more than that in the voltage magnitudes. On Fri, Jan 25, 2019, 00:38 Ray Zimmerman <[email protected] wrote: > 1 - I don’t really have experience with the state estimation code, so I’m > not sure what’s normal here. > > 2 - Simply set the value of the VG column in the gen matrix to 1 instead > of 1.06 for the slack bus generator and the power flow solution should also > have slack voltage of 1 p.u. > > Ray > > > On Jan 23, 2019, at 3:01 AM, naime ahmadi <[email protected]> wrote: > > Hi, > I have 2 questions. > 1-I run AC state estimation in matpower (use runse and state_est). > When I see these plots > subplot(3,2,1), plot(180/pi*(angle(Vlf)-angle(V)),'.'), title('Voltage > Angle (deg)'); > subplot(3,2,2), plot(abs(Vlf)-abs(V),'.'), title('Voltage Magnitude > (p.u.)'); > Error in angle is around 1.2 degree. Does it normal? > I only use matpower file and do not change anything. > 2-voltage of power flow is 1.06 and voltage of state estimation is 1for > slack bus, is there anyway that I can scale 1.06 to 1? > > Thank you, > Naime > > > >
