So why are outdoor towers and transmission lines covered in ice? It actually has to do with our atmospheric conditions. In the cold winter months, when the temperature drops below zero, water droplets on the lines condense into ice crystals. As time goes by, the ice crystals gradually increase and eventually form a thick layer of ice.
Generally speaking, in places with high humidity, the water vapor in the air is easy to meet condensation to form frost, for example, every year, Yunnan and Guizhou, the two provinces, Hunan, Jiangsu and Zhejiang and other regions, are to a certain extent by the transmission lines covered with ice plagued; and in areas with lower temperatures, such as some provinces in the north, the water vapor content of the air is low, and is not prone to the formation of frost. In addition, wind speed is also an important factor. When the wind speed is high, water droplets on the wires are more likely to be blown away; conversely, when the wind speed is low, the water droplets are more likely to stay on the wires and form ice crystals.
Next, let's take a look at the live form of the overlying ice. Usually, the ice cover shows irregular shape, sometimes like a tree hanging, sometimes like a waterfall. This is because the formation process of ice overlay is affected by a number of factors, including meteorological conditions, topography and the characteristics of the conductor itself. In some cases, the ice may also appear transparent or translucent, which is due to a certain amount of air bubbles contained in the ice crystals.
With the increase in ice thickness, wire arc sag increase, it is easy to lead to the conductor on both sides of the tower cross-armor produce excessive tension, the tower will pull down, tear off. At the same time, the conductor ice overload will also make the conductor jump, cause collision burns wire, burn insulators, fittings, thus leading to transmission line short circuit, broken line, collapse and other major accidents. Therefore, it is very important to explore the on-line monitoring of ice-covering and ice-covering monitoring early warning and prevention technology for transmission lines.
In addition to the well-known transmission line equivalent ice-covering online monitoring device, visualization of mobile ice-covering monitoring, transmission microwave ice-covering online monitoring, we Shenzhen Dingxin Wisdom Technology has also launched a surprising transmission line conductor ice-covering sprite (i.e.,Ice-covering sprite monitoring device DX-WPS100-JL). html" target="_self">Ice Wizard monitoring deviceDX-WPS100-JL), the core of which mainly includes image video visualization monitoring, micro-meteorology, inclination acquisition, power supply unit, conductor current and temperature monitoring, etc., can provide the power people with the ice thickness data and the scene of the ice cover image video, ice cover, and the power people can also provide the power people with ice thickness data. Early warning information, for strengthening the power grid ice-covered early warning, monitoring and emergency disposal capacity building, to protect the safe and stable operation of outdoor power facilities and equipment is of great significance!
