China Southern Power Grid has achieved the minimum impact and the fastest power restoration speed under disasters of the same scale
2022-03-04
At 23:00 on February 28, all affected users of Guangxi Power Grid Corporation resumed power supply, marking that all power outage users affected by ice and snow disaster of China Southern Power Grid Corporation resumed power supply. In the face of the two rounds of cold wave since January 27 this year, according to the emergency mechanism of "prevention before disaster, defense during disaster and rescue after disaster", the company issued early warning and started response in advance, flexibly adjusted the arrangement of power grid operation mode, carried out melting and deicing work efficiently, and spared no effort to rush to repair power, so as to restore power supply to more than 60% of affected users within 24 hours and basically restore power supply to all affected users within 48 hours, Realize the minimum impact and the fastest power restoration speed under disasters of the same scale.
"The coldest Spring Festival in recent ten years", "the ice forming rate is rare in history", "the depth of snow has broken the historical record"... From January to February this year, many places in the company's business area were repeatedly attacked by low-temperature rain, snow and freezing weather, and the power grid lines in some areas were seriously iced, which brought a great test to the power grid safety and power supply.
In particular, the cold wave from February 20 to February 24 shows the remarkable characteristics of "large cooling range, wide range, strong low temperature extremes and more rain and snow". It is the strongest cold weather in South China in the same period since 1996, resulting in the snow depth of some power facilities in Yunnan, Guizhou and other places breaking the historical record, resulting in the maximum daily icing number of lines with 10kV and above in the company's system reaching 924.
The company's early start, early deployment and early prevention have effectively guaranteed the power supply of the five southern provinces and regions during the Spring Festival and the Beijing Winter Olympic Games. During the cold wave, the company's emergency work remained online for 24 hours, and made full use of scientific and technological means to carry out ice observation, melting and de icing. A total of 58000 people carried out anti ice protection and power supply day and night, creating the fastest post disaster power restoration speed in recent years.
At present, the global climate remains unstable, and extreme cold and warm events occur frequently. Next, according to the distribution map of ice area and the icing situation over the years, the company will sort out the sections with easy icing and repeated icing, improve the system standards such as anti icing work guidelines and equipment technical guidelines, and accelerate the implementation of anti icing projects in accordance with the principle of "accurate implementation". In 2022, the company plans to invest 2.1 billion yuan in the transformation of transmission and distribution lines damaged and not reinforced due to insufficient ice resistance in history, the transformation of lines smaller than 10mm in the figure of ice area, and the installation of icing monitoring devices and ice melting devices. At the same time, the company will organize technical experts to further study the icing law, and gradually realize the accurate prediction of the rapid icing process in the micro meteorological area.
"The coldest Spring Festival in recent ten years", "the ice forming rate is rare in history", "the depth of snow has broken the historical record"... From January to February this year, many places in the company's business area were repeatedly attacked by low-temperature rain, snow and freezing weather, and the power grid lines in some areas were seriously iced, which brought a great test to the power grid safety and power supply.
In particular, the cold wave from February 20 to February 24 shows the remarkable characteristics of "large cooling range, wide range, strong low temperature extremes and more rain and snow". It is the strongest cold weather in South China in the same period since 1996, resulting in the snow depth of some power facilities in Yunnan, Guizhou and other places breaking the historical record, resulting in the maximum daily icing number of lines with 10kV and above in the company's system reaching 924.
The company's early start, early deployment and early prevention have effectively guaranteed the power supply of the five southern provinces and regions during the Spring Festival and the Beijing Winter Olympic Games. During the cold wave, the company's emergency work remained online for 24 hours, and made full use of scientific and technological means to carry out ice observation, melting and de icing. A total of 58000 people carried out anti ice protection and power supply day and night, creating the fastest post disaster power restoration speed in recent years.
At present, the global climate remains unstable, and extreme cold and warm events occur frequently. Next, according to the distribution map of ice area and the icing situation over the years, the company will sort out the sections with easy icing and repeated icing, improve the system standards such as anti icing work guidelines and equipment technical guidelines, and accelerate the implementation of anti icing projects in accordance with the principle of "accurate implementation". In 2022, the company plans to invest 2.1 billion yuan in the transformation of transmission and distribution lines damaged and not reinforced due to insufficient ice resistance in history, the transformation of lines smaller than 10mm in the figure of ice area, and the installation of icing monitoring devices and ice melting devices. At the same time, the company will organize technical experts to further study the icing law, and gradually realize the accurate prediction of the rapid icing process in the micro meteorological area.
Source: International Energy Network