Electric meter replacement wiring error judgment method based on electric quantity fluctuation abnormity

The invention provides an electric meter replacement wiring error judgment method based on electric quantity fluctuation abnormity and relates to a wiring error judgment method. Existing electric meter replacement wiring and judgment are carried out on site, which lacks of data support, and easily causes electric meter replacement wiring errors, which are often neglected. The method comprises the following steps: a data acquisition step; a calculation step: calculating difference value of daily electric energy average values before and after meter replacement, and calculating ratio between the daily electric energy average values before and after meter replacement; an abnormity judgment step: when the absolute value of the difference value is larger than a threshold value, and the ratio is not within 0.5-2, judging that meter replacement wiring is abnormal; an abnormity elimination step: eliminating that a replaced meter has metering error abnormity before replacement; and an abnormity determination step: det