The micro-meteorological environment around power grid overhead lines and substations refers to the special meteorological conditions formed around the equipment under the influence of local topography, subsurface and other factors. This environment is significantly different from the large-scale regional climate, which directly affects the mechanical and electrical performance and operational safety of power grid equipment. China's territory across the tropical, temperate, cold, from Hainan's tropical rainforest to the northeast of the tundra, from the high altitude of the Tibetan plateau to the eastern seaboard of the typhoon corridor, the terrain and climate is quite complex, but also let the power grid is faced with a "climate labyrinth".
For example, by the narrow tube effect, through the valley of the overhead line will be prone to a huge dance of the wire, the amplitude can be up to 10 times the diameter of the wire; located in the alpine zone of the line, the tower of the probability of ice cover is much larger than the plains. The urban substation, for example, due to the building complex on the airflow obstruction and disturbance, the wind speed around the substation may plummet 30%, but in the corner of the equipment will form turbulence, resulting in a surge of 1.8 times the local wind pressure, it is very easy to trigger casing and other equipment mechanical vibration failure.
Currently, there are quite a few ways to monitor these micro-weather environments, and the traditional weather station's data collection interval is mostly 1 hour, making it difficult to capture minute-level micro-weather mutations. In response to the market demand, Shenzhen Dingsin Wisdom Technology Co. www.guilinaichao.cn/product_detail/777692.html" target="_self">Multi-functional micro-weather acquisition deviceTransmission line micro-weather online monitoring deviceDX-WPS100-QX, as a kind of intelligent monitoring equipment specialized in real-time collection and analysis of local meteorological environmental parameters around the transmission line, has been installed and applied in many cities and municipalities across the country. It has been installed and applied in many cities across the country, realizing remote online monitoring and real-time early warning of micro-meteorology of transmission lines with "sensor array + intelligent terminal + communication network". Its core function is to capture micro-scale meteorological changes affecting the safe operation of the lines through a network of high-precision sensors, including ambient temperature, humidity, wind speed, wind direction, rainfall, atmospheric pressure, optical radiation, and wind speed and direction, Rainfall, atmospheric pressure, light radiation and other parameters.
Generally speaking, in the line through the mountainous areas, waters and windy areas of the section installed multi-functional micro-weather collection device, can avoid the power grid "micro-weather island".
