On the morning of December 2, the streets of the central urban area of Guangzhou, south of the Tropic of Cancer, were cold and windy, and rare down jackets appeared on "office workers". The strongest cold wave this year has swept south from the north, and the temperature has dropped sharply. Frost has appeared in northern Guangdong, Yunnan and Guizhou. Patrolling the line on the icy mountain is "anti-ice", ensuring the electricity demand of the shelter hospital, keeping the vegetable greenhouse warm and cold... The southern region has made every effort to ensure the power supply, welcome the cold wave, and protect the warmth.
In northern Guangdong, Yunnan and other places, the anti-ice and electricity protection every winter is an uphill battle.
The Wanshan Mountains is the highest altitude area in Tongren, Guizhou. Deng Fengyi, a line inspector from the Power Distribution Center of the Wanshan Power Supply Bureau, took out a thermometer, telescope and other tools from his backpack to observe the metals and wires attached to the tower. Deng Fengyi said: "Doing a good job in line inspection and anti-icing work is the most effective way to reduce icing and failures."
Rain, snow and freezing disasters are the "killers" for the safe and stable operation of the power grid and reliable power supply. Once the power supply line encounters freezing rain and ice for a long time and is not melted in time, it may cause the pole to fall and the line to break, resulting in power outages. The line patrol "anti-ice man" who walks hard in the barren mountains and mountains of ice and snow is the guarantee line for electricity safety.
With the development of information technology such as remote monitoring and high-resolution video and the application of drone and other products, mechanical equipment continues to replace manual inspection lines, and the role of technology in anti-icing and anti-icing is also increasing.
Up to now, Guangdong has achieved full coverage of 220 kV line icing online monitoring in ice areas across the province through the installation of icing monitoring devices. At Guangdong Qingyuan Power Supply Bureau, the ice melting "black technology" and the new overhead ground wire ice melting automatic series connection device newly put into use have greatly improved the wire ice melting efficiency. He Huan, Institute of Equipment and Environmental Monitoring and Evaluation of Electric Power Research Institute of Guangdong Power Grid Corporation, said that the operation time of this device is shortened by more than 99% compared with traditional manual methods.
In the face of the incoming cold wave and epidemic prevention and control needs, the southern power department is on duty day and night to fully protect the electricity demand of 9 shelter hospitals in Haizhu District, Guangzhou.
The Guangzhou Power Supply Bureau connected with the two-level health and health commissions and other relevant epidemic prevention agencies in the urban area, and included key medical institutions, epidemic prevention command agencies, shelter hospitals, case transit isolation points and other important places for epidemic prevention in Guangzhou into the scope of key guarantees. According to the principle of "adding one, guaranteeing one", open green power channels, fully support the construction and operation of epidemic prevention supporting projects in various places, and ensure a quick response to the electricity demand for epidemic prevention.
As of November 28, Guangzhou's key guarantee scope and key power supply places have increased to 361, and more than 15,000 people are fighting on the front line of power supply.
Yingde City in Guangdong Province is a big agricultural city and one of the "vegetable baskets" of the Guangdong-Hong Kong-Macao Greater Bay Area.
In Lianzhuang Village, Yingde City, the electric power inspection staff made a special trip to the vegetable greenhouse in the modern agricultural science and technology industrial park in the village to conduct a comprehensive inspection of special patrols and hidden dangers.
"Strawberries, tomatoes and cucumbers are now grown in greenhouses, and the temperature cannot be lower than 8 degrees Celsius. At present, we have closed the side membrane skylight to keep warm. If the temperature is lower, our products will be affected." Chen Hua, manager of the production technology department of Lianzhangcun Modern Agricultural Science and Technology Industrial Park, said.
In response to the cold wave, China Southern Power Grid Guangdong Power Grid Company launched a yellow warning for low-temperature rain, snow and freezing disasters, closely tracked the trend of weather and power load changes, monitored the operation status of the power grid in real time, optimized and adjusted the operation mode of the power grid, and ensured that farmers' electricity consumption was safe and worry-free.
According to reports, Guangdong has built a cold-proof and anti-ice system that combines artificial and scientific technology, and continuously improves the reliability of power supply security such as mass cold protection, agricultural production and epidemic prevention and control during cold waves.