What is the impact of smog on transmission lines?

First of all, we need to know how the haze is composed, so as to analyze whether it belongs to the transmission line and whether it has an impact, what kind of impact, I analyze it as follows, for your reference:

Haze is a combination of fog and haze. When the relative humidity reaches 100%, the water vapor in the air will condense into fine water droplets suspended in the air, reducing the visibility at the ground level, this weather phenomenon is called fog; Haze refers to the turbidity phenomenon formed by the suspension of a large number of smoke, dust and other particles for unknown reasons, and the core substance of haze is the dust particles suspended in the air, which are called aerosol particles in meteorology.

Through the above we know the composition of haze, we can know that the impact of haze weather on the transmission line is reflected in two aspects: one is the impact of fog, that is, the influence of humidity, which is reflected in the insulator surface of the insulator string on the transmission line is damp, and the insulation level of the insulator string decreases, resulting in pollution flashover; The second is the impact of haze, that is, the impact of pollutants in the atmosphere, which is reflected in the increase in the pollution of the outer insulation surface of the insulator string on the transmission line, which may also cause pollution flashover after superimposed with the high humidity environment.

If you want to prevent the occurrence of pollution flashover accidents in haze, you can take measures such as spraying RTV coatings, increasing the number of insulators per strip to leave a margin or using composite insulators, which can reduce the possibility of pollution flashover accidents caused by haze to transmission lines.

Smog weather doesn't have a big impact on the line, and it's not thunder and lightning weather.

Fog is a natural weather phenomenon.

When the air temperature is close to zero and the relative humidity reaches 100%, the water vapor in the air will condense into fine water droplets suspended in the air, reducing the visibility at the ground level, and this weather phenomenon is called fog. Fog is more common in spring from February to April. Whenever the visibility in the atmosphere is less than 1 km due to the condensation of suspended water vapor, meteorology calls this weather phenomenon fog.

Conditions for fog formation: one is cooling, the other is humidification, increasing the water vapor content. The types of fog are radiation fog, advection fog, mixed fog, evaporative fog, and smoke.

Cause: Saturation is reached when the water vapor contained in the air reaches its maximum. And the hotter the air, the more moisture it can hold.

1 cubic meter of air, when the air temperature is 4, the maximum amount of water vapor that can be contained is grams; When the air temperature is 20, 1 cubic meter of air can contain a maximum of grams. If the air contains more water vapor than the amount of saturated water vapor at a certain temperature, the excess water vapor will condense and when enough water molecules combine with the tiny dust particles in the air, and the water molecules themselves will bond to each other, becoming small water droplets or ice crystals. The amount of water vapor in the air exceeds the saturation amount and condenses into water droplets, which is mainly caused by the drop in air temperature.

This is also the reason why autumn and winter mornings are foggy.

If the heat of the ground is lost, the temperature drops, and the air is quite humid, then when it cools to a certain extent, a part of the water vapor in the air will condense and become many small water droplets, suspended in the air layer near the ground, and fog will be formed. Both it and clouds are caused by a drop in temperature, and fog can actually also be said to be clouds close to the ground.

The temperature is relatively high during the day, and the air can hold more water vapor. But at night, the temperature drops, and the ability of the air to hold water vapor decreases. As a result, some of the water vapor condenses into fog.

Especially in autumn and winter, due to the long nights and the chance of cloudless wind, the ground heat dissipation is more rapid than in summer, so that the ground temperature drops sharply, so that the water vapor in the air near the ground is easy to reach saturation in the second half of the night to the morning and condense into small water droplets, forming fog. The morning temperature is the lowest in autumn, winter and spring, and the fog is at its thickest.