Sag measurement algorithm, system and device and storage medium

The invention relates to the technical field of sag measurement, and particularly relates to a sag measurement algorithm, system and device and a storage medium. .According to the algorithm, when the sag of a certain lead between a first tower and a second tower is measured, tower position center points of the first tower and the second tower are recorded as O1 and O2 respectively, the certain lead is recorded as an X# lead, hanging points of the X# lead on the first tower and the second tower are recorded as A and B respectively, and the direction from the first tower to the second tower is recorded as the line advancing direction The method specifically comprises the steps of S1, setting a measuring point C at an X# wire, and obtaining the height Hc of the measuring point C; S2, acquiring the height Ha of the hanging point A; S3, acquiring a height difference L1 between projection points of the hanging point A and the measuring point C on a connecting line of the hanging point A and the hanging point B; S4,