The invention relates to an 
electrical structure of a 
solid combination switch which can switch automatically; a three-phase 
system busbar incoming line is connected with a series reactor, the line outgoing from the reactor is connected with a 
capacitor, the outgoing line end of an A-C phase 
capacitor is connected with two groups of 
thyristor valve strings, the valve strings are connected with a 
contactor in parallel and then are short-connected with the outgoing line of a B-phase 
capacitor; a wall feed-through sleeve, a 
bus connecting 
copper bar, a 
thyristor valve string, an insulator, a 
thyristor valve 
high potential electric board (TE board), a TE board 
energy delivery power supply, a high-frequency converter, a high-
voltage cable, an 
energy delivery magnet ring 
transformer, a vacuum 
contactor, a valve base electronic device (VBE), a regulating unit and a man-
machine interface part are integrated together by an equipment cabinet, the equipment cabinet can be directly hung a high-
voltage electric power system, so as to ensure the insulation of high-
low voltage systems; in addition, the contact can be switched at the 
zero crossing point under the reactive power condition of the 
system, and the 
solid combination switch can be operated on the equipment cabinet in the running process.