The utility model discloses an
electric power facility
safe operation active protection alarm device, which comprises a power transformation cabinet, a
cyclone separator and a
pressure sensor, a power transformation facility is arranged in the power transformation cabinet, an air inlet and an air outlet are arranged on the power transformation cabinet, an exhaust fan is arranged at the air outlet, the
cyclone separator is arranged in the power transformation cabinet, and the
pressure sensor is arranged on the
cyclone separator. An inlet of the cyclone separator is communicated with the air inlet through a communicating pipeline, a discharging port of the cyclone separator is communicated with the
material storage box, a filter screen is arranged in an air outlet
pipe of the cyclone separator, and the two pressure sensors are arranged on the two sides of the filter screen respectively; the
active protection device is additionally arranged in an existing box-type power transformation cabinet, sundries entering the box-type power transformation cabinet are filtered and removed in advance, ventilation and heat dissipation are achieved, meanwhile, safety of
electric power facilities is guaranteed, whether the filter screen is blocked or not is determined through the
pressure difference between the two pressure sensors, then personnel are reminded of cleaning through the
alarm device, and the safety of the box-type power transformation cabinet is improved. And the hidden danger of over-high temperature in the box-type substation caused by unsmooth ventilation is prevented.