Method and device for accurately monitoring condensation in high-voltage switch cabinet

The invention provides an accurate monitoring device for condensation in a high-voltage switch cabinet. The accurate monitoring device comprises an in-cabinet sensor, an in-cabinet condensation monitoring terminal and an out-cabinet sensor, wherein the in-cabinet sensor comprises an in-cabinet temperature sensor and an in-cabinet humidity sensor; the out-of-cabinet sensor comprises an out-of-cabinet temperature sensor; the in-cabinet sensor is used for monitoring in-cabinet air temperature and in-cabinet air relative humidity and sending the in-cabinet air temperature and the in-cabinet air relative humidity to the in-cabinet condensation monitoring terminal; the out-of-cabinet sensor is used for monitoring the out-of-cabinet air temperature and sending the out-of-cabinet air temperature to the in-cabinet condensation monitoring terminal; the monitoring terminal is used for calculating the air dew point temperature in the cabinet according to the air temperature in the cabinet and theair relative humidity in