Control real-time flowchart for symmetrical Components of the power systems

The symmetry of voltages, among other parameters, into real power networks, is essential for ensuring optimum performances of the electrical systems and a standard quality of energy. To control this, there are specific electric and electronic relays, which are hardware programmed to survey symmetrical components of currents and voltages. The paper describes a fast flowchart to control the positive sequence, negative sequence and zero sequence components of voltages and currents that are generated into the real power systems, using the facilities of the VEE Pro software - for simulation and a data acquisition board - for real time control with the PC, as a complex protective relaying.