In the STFT calculation, the voltage and current phasor
is produced at each instance of the FFT window, which travels at five percent of the window length.
Compensation, using generator current phasor
measurement and a certain adopted impedance, allows replacing the voltage measured at the generator terminals with a synthesized voltage in a selected fictional point, shifted toward the generator's equivalent electromotive force, or towards the grid as follows
On the meter side the PMU 1133A Power Sentinel of company ARBITER SYSTEMS is used, which collects the voltage and current phasor, energy consumption, frequency, power, power factor and power outages measurements.
This information is divided in two types: the first for voltage and current phasors measurements, frequency and power, which is sent in real time and the second for sending energy consumption which is done by request from the concentrator.
Furthermore, the synchronized current phasor
measurements are transformed to rectangular coordinates to enhance the convergence properties of the proposed state estimation approach.
These functions are created on the basis of electrical circuits and electric current phasor
diagrams of analysed chain winding, according to which the conditional current strengths and flow directions are determined in the selected moment of time.
Using variables that describe the state of power system, such as voltage phasor, current phasor
, frequency and phase angle et al, to carry global analysis, it extended the styles of information that can be used to analyse and diagnose the fault.
and (ii) all homologous voltage and current phasors
are identically associated along the line by virtue of (10), (8a), and (59), and (iii) from (5d), (62), and (65), fall under identical as well terminal conditions.
The voltage and current phasors are found taking the fundamental frequency by using the fast Fourier transform.
A new fault locator for three-terminal transmission lines-using two-terminal synchronized voltage, current phasors.
2002, "A new fault locator for three-terminal transmission line-using two-terminal synchronized voltage and current phasors
," IEEE Trans.
Parameters of stator winding are: total number of slots S = 48, number of poles 2P = 8, number of phase m = 6, pole pitch [tau] = 6, slot angular pitch [gamma] = 30[degrees], number of slots per pole per phase q = 1, coil pitch y = 5, phase spread [sigma] = 60[degrees], angle between stator current phasors