IEC_Calculation

Calculate the positive sequence of an electrical system values according to the IEC 61400-21 norm

This function will calculate the positive sequence values of an electrical system (from its voltages and current measurements) like the active and reactive power using the IEC 61400-21 Norm.
for simplisity the function assume that the measured three phase signals have the same sampling rate and the same length (that is why it accepts only one time signal as an input).
The function inputs are:
1- the mesured three phase voltage and currents signals of an power system (Only the amplitude /Y-Values only/)
2- one of the time values of the measured signals like U1_time which indicate the x- Values where the sampling rate and offset values can be extracted.
3- f_grid: the nominal frequency of the power system under study (normaly 50 Hz)
The function outputs are:
1- The three phase RMS values of the measured voltages calculated according to the norm
2- The three phase RMS vlaues of the measured currents calculated according to the norm
3- P1pos & Q1pos are the positive sequence Active- and Reactive power values calculated according to the IEC norm.
4- U1pos: is the positive sequence voltage calculated according to the IEC norm.
5- Iact1pos,Ireac1pos: is the positive sequence Active- and Reactive currents calcualted according to the IEC norm
6- cosphi1pos: is the possitive sequence power factor calculated according to the IEC norm.
7- the final output (time): is the time axie of the different output resutls.
this function will also need the movstat.m file which will be used to calcutlate the "mvint" of the sin and cos signals in this function.
for more information please refer to the IEC 61400-21 Norm.