Protection control system for longitudinal capacitance compensation device of industrial silicon furnace

The utility model discloses a protection control system for a longitudinal capacitance compensation device of an industrial silicon furnace, which comprises an industrial silicon furnace electrode, the outer side of the industrial silicon furnace electrode is connected in series with a secondary winding of an electric furnace transformer, and a primary winding of the electric furnace transformer is connected in series with a high-voltage current transformer. A low-voltage current transformer is connected in series between the secondary winding on the electric furnace transformer and the electrode of the industrial silicon furnace; a medium-voltage longitudinal compensation capacitor bank is connected in series in the electric furnace transformer regulating winding (medium-voltage winding); the current and voltage signals are introduced into a PLC; the objective of the utility model is to solve the problems that an existing medium-voltage capacitor longitudinal compensation device used on an industrial silicon