Switch closing setting compensation method, system and equipment for input frequency deviation

The invention provides a switch closing setting compensation method, system and device for input frequency deviation, and relates to the technical field of high-voltage product detection, and the method comprises the following steps: loading a setting clock frequency of a program controller and an actual clock frequency of an external signal source, collecting an original setting value of the program controller when the program controller operates at the setting clock frequency, and setting the original setting value; the switch closing time of an external signal source is determined; performing compensation calculation on the original setting value according to the setting clock frequency, the actual clock frequency, the original setting value and the switch closing time to obtain an actual setting value, and correcting the original setting value into the actual setting value; finally, the switch is switched on to the target position according to the actual setting value, and switch switching-on setting comp