Intelligent closing control method for high-voltage circuit breaker based on SF6 information acquisition

The invention provides an intelligent closing control method for a high-voltage circuit breaker based on SF6 information acquisition. The intelligent closing control method comprises the following steps of: (1) receiving a closing instruction; (2) collecting an SF6 signal; (3) judging whether the internal pressure of the SF6 gas is greater than a reference value or not, if yes, giving an alarm, and if not, entering the step (4); (4) randomly giving a closing time correction amount dt; (5) calculating the insulation strength reduction rate of the SF6 gas and a voltage intersection point (t1, u1) borne by each fracture of the circuit breaker when the switching-on time is advanced by delta t; (6) calculating the insulation strength reduction rate of the SF6 gas and a voltage intersection point (t2, u2) borne by each fracture of the circuit breaker when the closing time is delayed by delta t; (7) calculating a difference value between u1 and u2; (8) judging whether the difference value is greater than a reference