Design And Development Of Outdoor Terminal Box And Mechanism Box Moisture Proof Monitoring System

Effect of outdoor terminal box,the box is the mechanism of control and protection device for transformer,circuit breaker,isolating switch,current transformer,voltage transformer,current state of two times,two times the voltage transfer to protection room,on the other hand,providing power for a corresponding equipment operation.In the wet natural environment,the outdoor terminal box,the box is vulnerable to the invasion of the moisture,resulting in the accumulation of moisture inside the box,and even in the box on the wire,the device condenses into water.It is easy to lead to the decline of the insulation of the wire and the equipment,which may lead to the DC grounding or short circuit,the switch,such as jumping,refusing to jump and so on.In addition,moist air will make the metal part of the metal terminal and relay box inner rust,lead to resistance increases,the relay node card blocking,may end up current transformer two open,the terminal contact part,heating relay cannot harm action.Therefore,it is very important to find and deal with the damp outdoor terminal box and mechanism box in time.At present,outdoor terminal box,box body used tidal flooding method is in a heater installed inside the box,to prevent water condensation in the air generated by the heater with the heat,and with the help of hot and cold air circulation,the use of natural water discharged to the outside box.The practical experience shows that the effect of this method on the terminal box and the mechanism box is very poor,which often leads to the abnormal heat inside the box body,which aggravates the harm to the wire and equipment.Therefore,under the premise of not changing the box body,the installation of a suitable device to determine the impact of flooding tide effect.Substation duty officer on a regular basis after a month or abnormal weather,the need for outdoor terminal boxes,body boxes for special inspection of moisture.They will all outdoor terminal box,the mechanism box door open one by one check,and ultimately may only find a few unusual box,the workload is large,low efficiency.Therefore,the production of a moisture-proof monitoring system instead of manual inspection,is the common aspiration of all the staff on duty.In this paper,through the transformation of the existing temperature and humiditycontroller,to increase its communication function,the temperature and humidity of the site to the background computer.Background computer will receive the data displayed on the screen in real time for duty personnel to view.In addition,the background computer will receive the data and set the alarm value comparison,to determine the various cases of damp.When found damp box,the background of the computer will be through voice signals,e-mail,text messages and other means to remind the substation duty personnel to the scene to check,to find the damp box.