Method for judging quality of protection action behavior

The invention relates to a method for judging the quality of a protection action behavior, which comprises the following steps of recording the voltage quantity and the current quantity input by relay protection through a relay protection measurement and control device, performing Fourier transform on the voltage quantity and the current quantity, and extracting fundamental wave and non-fundamental wave components; carrying out integral calculation on the fundamental wave apparent power full fault process time of the current and the voltage to obtain A1; carrying out integral calculation on the apparent power full fault process time of full waves including fundamental waves and non-fundamental waves of the current and the voltage to obtain A total; and judging the protection action quality according to the ratio of A1 to A total. According to the invention, the protection action can be automatically identified and analyzed, and the action correctness and integrity of the protection device and the circuit brea