Pressure monitoring device of high-voltage circuit breaker and pressure monitoring method thereof

The invention relates to the technical field of pressure monitoring of high-voltage circuit breakers, and discloses a pressure monitoring device of a high-voltage circuit breaker and a pressure monitoring method thereof.A control module of the pressure monitoring device can judge whether an actual pressure value in a closed state is located between a first theoretical pressure value and a second theoretical pressure value or not, and if not, the pressure monitoring device is started. If yes, determining that closing is abnormal; the control module can also calculate the actual pressure absolute change rate when the high-voltage circuit breaker acts, and can also judge whether the actual pressure absolute change rate is between the first theoretical pressure absolute change rate and the second theoretical pressure absolute change rate, and if not, it is judged that the action is abnormal; the control module can further judge whether the actual pressure value in the opening state is located between the third th