Anti-adhesion control method for increasing and decreasing magnetic relay contacts of automatic voltage control system

The invention belongs to the technical field of automatic control, and particularly relates to an anti-adhesion control method for increasing and decreasing magnetic relay contacts of an automatic voltage control system. Magnetizing or demagnetizing pulse signals of a lower computer are directly used as input quantity for realizing an anti-adhesion function; the magnetizing or demagnetizing pulsesignal of the lower computer is a pulse signal with fixed time delay; and the DCS cabinet performs delay judgment on the magnetizing or demagnetizing pulse signal, outputs an alarm signal when the signal delay exceeds the fixed delay set by the lower computer, prompts the magnetizing or demagnetizing relay to be adhered, generates a locking signal at the same time, and locks the corresponding magnetizing or demagnetizing signal to be output. The method is simple, reliable, good in operation condition, and capable of correctly judging adhesion faults of the magnetism increasing and decreasing relay, reliably locking ma