Hefei, Feb. 22 (Xinhua) -- In the wind and snow, they guarded the lights of thousands of homes -- the largest energy base in East China to ensure power supply.
Xinhua News Agency reporters Pan Feng, Qu Yan, Zhou Mu.
In the past few days, the first round of cold waves in the Year of the Dragon has affected the central and eastern regions of China, and the demand for electricity such as heating has risen in many places. On the 22nd, the reporter came to Huainan City, Anhui Province, the largest energy base in East China, to visit the power supply situation.
There are 5 1000 kV lines and 20 500 kV lines in Huainan City, which transmit nearly 200 million kWh of electricity to the Yangtze River Delta region every day. In Waiyao Village, Shangyao Town, Datong District, Huainan City, the reporter slid step by step on the snowy and icy road and met Su Pengfei, who was overhauling the transmission line with his colleagues Kang Faxin and Yin Xudong. Su Pengfei is the deputy director of Huainan Transportation Inspection Station of Anhui Power Transmission and Transformation Project, he told reporters that Huainan is the bridgehead of "Anhui Power Transmission to the East", with a number of power supply arteries to ensure the electricity consumption of many cities in the Yangtze River Delta.
This is a 1000 kV Huai Xuan line. Su Pengfei pointed to a transmission line in front of him and said that due to the low temperature and rain and snow, the line and equipment are easy to freeze, and the deicing of the iced line is easy to cause the line to dance, which may lead to the consequences of line breakage and tower collapse.
In rainy and snowy weather, we have to overhaul the 15, 374 kilometers and 903 base towers that are operated and maintained in the station area every day. Yin Xudong said that they are equipped with drones with infrared detection systems, rangefinders and laser foreign body eliminators. "In addition to technology, we also have a little trick. Kang Faxin, who has been engaged in line operation and maintenance for 13 years, said that he can hear line faults with his ears, "Some faults will cause abnormal discharge sounds." ”
Su Pengfei told reporters that if the icing reaches a certain level, they will make a comprehensive judgment and adopt the method of self-melting ice with wire heating or drone mounted de-icing device to knock on the ice.
In addition to the operation and maintenance of transmission lines, ensuring power supply is also crucial. At the Luohe Power Plant in Huainan City, coal maintenance workers Qu Yang and Wang Qiang are repairing coal lines. "Whether the drum is damaged, whether the bracket is deformed, and whether the belt is scratch-free......Every detail must not be missed. Qu Yang said.
Luohe Power Plant is one of the main power plants of East China Power Grid. Yan Houqiang, a senior supervisor, told reporters that affected by this round of cold wave, the power plant's power generation demand has risen, and the plant has not only strengthened the maintenance of equipment to ensure that the unit is in good health, but also enabled an emergency backup unit.
Strengthening fuel management is one of the important aspects of ensuring power supply. Our factory consumed 1 yesterday50,000 tons of coal, which today is expected to reach 160,000 tons. Yan Houqiang took the reporter to the coal unloading operation site, only to see that the automatic coal unloading equipment was running smoothly and the staff was busy and orderly.
The coal used in the power plant comes from Datong Station of Huainan West Station of China Railway Shanghai Bureau Group. It is understood that the station undertakes the "last kilometer" transportation task of thermal coal into the plant, and transports thermal coal 1 per day20,000 tons, affected by rain, snow and freezing weather, the demand for coal in power plants is still rising.
In order to cope with the problem of coal freezing during thermal coal transportation caused by low temperature weather, the station strengthened the docking with unloading factories and mining enterprises, and increased the input of operators and unloading machinery. Huang Wujun, the head of Datong Station, told reporters that the station reasonably arranged the operation plan and did a good job in the seamless connection of thermal coal to the station and the "last kilometer" short barge transportation.
At about 6 p.m., the snow became more and more intense, and soon the railway was covered. "Turnoffs are the steering wheel of a train, and if they are covered in snow, they can be a threat to traffic. As he spoke, Huang Wujun and his staff rushed to the work area with shovels and brooms to clear the snow on the fork.
The snow does not stop, and the post is not removed. Huang Wujun said.