Resumen
System and method of protection 100% ground stator based on the measure of third self-adjusting harmonic. Method and protection system 100% ground stator for synchronous machines based on the third harmonic measurement that is adjusted according to the operating conditions of the machine, thus avoiding unwanted firings. For this the third harmonic produced by each winding of the machine is measured. From this measurement, the theoretical value that the third harmonic must have in the neutral or in the terminals of said machine is calculated. And finally this theoretical value is compared with the measurement in the neutral or terminals, determining that there is a defect if they are not equal. (Machine-translation by Google Translate, not legally binding)