How to make moistureproof measures for substations in summer

How does the transformer substation do moisture protection in the summer? Every summer, when it rains into the rainy season, due to the weather, electrical equipment in substations is very likely to affect functions due to moisture, and it may even seriously affect the life of electrical equipment. Therefore, it is very necessary to do well in the summer to prevent moisture in substations.

One of the measures against moisture is to prevent the pollution flashover of insulators, the humidity of the air in the rainy season becomes large, the pollutants on the surface of the insulator are wetted, and the surface conductivity thereof increases sharply, which can cause flashover of the insulator at the power frequency voltage. The pollution of the power equipment is accompanied by the flashover. Strong electric arcs can easily lead to damage to electrical equipment. The solution is to regularly clean the insulators, apply anti-fouling paint such as silicone oil to the surface of the insulators, and inspect the insulators periodically.

The second measure of moisture prevention is to prevent the condensation in the switch cabinet. When the equipment is in the standby state, the temperature in the cabinet may be lower than the outside of the cabinet. Condensation easily occurs and its insulation performance is greatly reduced. When the rainy season comes, the humidity is relatively high, and the bottom of the switchgear is relatively humid, which seriously affects the stability of the power supply. When the ambient humidity reaches 80%, the condensation controller on the switchgear should be turned on to turn on the dehumidifier in the switch room at the right time. Air-conditioning, keeping the indoor environment dry, periodically check the cable trench for water accumulation, and eliminate it in time.

The third measure of moisture prevention is to prevent the terminal box from being exposed to moisture and moisture, and the outdoor switch terminal box in the rainy season is prone to moisture condensation and water, which will cause the DC secondary circuit to reduce the insulation resistance to ground. In severe cases, a DC positive power supply or a negative power supply ground may be formed. If DC grounding is caused at two points, the DC fuse will be blown, resulting in a large-scale power outage. The solution is to install special ventilation holes on both sides of the switch box to cool the temperature. Install a dewing and dehumidifying heating control in the switch terminal box. For use in wet conditions during rainy seasons to prevent condensation from causing degraded insulation and short-circuit faults. Substations WWW.HB1000KV.COM.

In addition to the above three points, the electric power worker should actively maintain and maintain the equipment in the substation, conduct regular inspections, prevent it from happening, and prevent substation equipment from getting wet and affecting the power supply stability.