In view of such problem as shutdown of compensation device at the short network side during the production of 12 500 kVA ferrosilicon furnace

causing production reduction and power consumption increase

in this paper

a kind of a reactive power compensation control system based on Siemens PLC as the main control unit is proposed

the structure of vacuum contactor with series reactor is used by way of studying output power c alculation of the compensation device

analysis of design principle analysis of control system and main circuit so to avoid the phenomenon of contactoradhesions.The stainless steel material for the cubical panel is adopted so to achieve the anti-jamming effect.The system is stable and reliable after actual operation

proving the effectiveness of the design scheme of the product

reaching the customer’s requirement and having wide application prospects.