The present invention discloses an online monitoring device for an electrical switch cabinet state based on multidimensional feature parameters for realizing real-time monitoring for key point temperature, a
partial discharge state and an operating mechanism state of a
high voltage switch cabinet. The online monitoring device for an electrical switch cabinet state based on multidimensional featureparameters comprises a switch cabinet, a temperature sensor, an intelligent
data collector, an intelligent communication terminal, an intelligent
master station, a
big data server, a computer, a mobile terminal, a DC 12V power adapter, an AC
transformer, a Hall
current sensor, a
vibration sensor, a TEV ground wave sensor, an AE
ultrasonic sensor, a panel antenna, a feedback line and a
remote system master station. The online monitoring device for an electrical switch cabinet state based on multidimensional feature parameters can be adopted to effectively avoid cable joint fault,
bus fault, contact fault, operating mechanism fault, etc., can effectively ensure reliable operation of switch cabinet equipment, and can ensure safe and stable operation of a
power grid.