What are the three defenses of substation in winter?

Three defenses of substation in winter: fire prevention, anti-freezing/cold prevention, wind prevention and snow prevention.

After entering the winter, with the deepening of the project and the gradual cooling of the climate, many safety hazards have been brought to the construction safety belt. In order to avoid unnecessary hidden dangers and ensure the smooth progress of safe production in winter, according to the characteristics of current winter, the "three defenses" (fire prevention, freezing/cold prevention, wind and snow prevention) safety measures are specially formulated to ensure the safety of winter construction.

Matters needing attention in winter substation:

1, strengthen equipment inspection

Transformer, capacitor, switch and other oil-filled equipment, when the temperature changes dramatically, the volume of oil will also change greatly. When the temperature drops suddenly, the oil level of oil-filled equipment may be lower than the operation requirements, which may lead to misoperation of transformer gas protection or equipment failure, resulting in accidents.

2. Strengthen the inspection of outdoor power box and switchboard cabinet.

Outdoor distribution equipment is easy to accumulate water vapor and condense when the temperature drops, which will reduce the insulation level of electrical components and lead to equipment collapse. It is necessary to strengthen the management of direct operations on site, especially the inspection of temporary electricity consumption on site. The temporary electrical boxes of some construction units are not well sealed, so they are wrapped with plastic sheets to resist the wind and snow.

In winter, a large amount of steam is discharged from the production device, which may enter the nearby switch control box in series, reducing the insulation performance of electrical components. Check whether the switch control box door is closed, whether the fastening bolts are complete and fastened, and negotiate with the production preparation department to solve the exhaust mode if necessary.

3, completes the outdoor equipment hygiene, prevent equipment fog flash.

The weather changes greatly in autumn and winter, the temperature difference between day and night intensifies, and water vapor is easy to condense to form fog, frost and snow. If the insulator surface is dirty, the leakage current will increase greatly, which will lead to the decline of insulator insulation performance, flashover discharge and even power failure. In winter, the electrical workshop should arrange personnel to clean outdoor equipment.