Simulink: Dynamic load, external PQ

A followup question to this..... http://www.mathworks.com/matlabcentral/answers/10424

Hi, I'm doing something similar to what Radu did/tried to do ie external control of PQ using the demand data I have over 24 hours.

Using Fangjun's method (but unlike the formula used)I created workspace variables for time(in sec),P and Q for the 24 hours duration with a resolution of 1 hour. I put them in 2 separate lookup tables. I also used a mux to combine them into a single vector and wired it to the PQ controlled i/p.

The i/p to the 2 lookup tables is the same clock.

What i'm not sure about is if the lookup table is using the appropriate value (either by direct lookup or interpolation/extrapolation) based on the clock time. Note: i'm doing the simulation in phasor mode as this is much quicker than the time mode.

Any opinions???

[cr28]

I managed to get hold of real and reactive power data of 1 min interval data. I loaded it into the simulink model and ran it for 10 sec. this load block is connected to a constant source block. THE GRAPH ON THE SCOPE FOR REAL POWER AND REACTIVE POWER FROM THE LOAD BLOCK LOOKS TOTALLY DIFFERENT FROM THE GRAPH I PLOTTED IN EXCEL USING THE INITIAL 1 MIN DATA.

i'm not an electrical engineer and i can't figure out WHATS HAPPENING! WHY ARE THE GRAPHS DIFFERENT?

please, i need to figure this out asap....thanx