Southern Power Grid Guizhou Company: Vigorously build an anti-ice emergency system

After 20 days of continuous freezing, there are tens of thousands of ice-covered lines. At sunrise, nearly 60,000 people were moved, nearly 7,000 people were de-icing, and 20,000 vehicles were used. A few days ago, going to winter and this spring for the third time invaded Guizhou's low-temperature rain and snow weather, as if it brought people's memories back to 2008.

“Reporting the emergency center, the ice has been successfully melted.” On January 28th, in the cold wind of minus 110 degrees in the 110 kilovolt Hefei line of Fenggang County, Zunyi, the ice was seen falling from the line. Han Changqiang and Yan Changgui of the ice-watching personnel immediately reported. Since the beginning of this winter, Guizhou Power Grid Corporation of China Southern Power Grid has used DC, AC, mode, machinery and other technical means to calmly complete 145 deicing operations of 10 kV and above ice-covered routes.

Ten years ago, in the face of snow and ice disasters, the grid people responded passively, hitting the ice with a scorpion, waiting for the sun to melt. The common people are looking forward to the emergence of light, looking forward to the light to celebrate the New Year. Such high-tech ice-blocking, anti-icing and ice-melting methods are hard to imagine.

Ten years later, under the support of the system's efficient emergency mechanism and independent innovation technology, Guizhou Power Company of Guizhou Power Company has brought rich and effective methods of melting and removing ice, and the endless anti-ice spirit has brought people real warmth. Let the folks in Guizhou stay in front of the electric heater in this cold winter, and feel the silence in the air-conditioned room.

Invest more than 10 billion yuan to prevent ice and disaster

Raise the banner of social responsibility, regardless of cost, cost and protect people's livelihood

In 2008, the ice storm that lasted for more than 40 days left the grid overwhelmed. As the most affected area in the country, Guizhou Power Grid's 185,000-base tower was dumped and damaged, nearly 80% of the 10 kV and above lines were damaged, and 83% of the substations were shut down. In Duyun, the ice disaster caused the Duyun grid to lose power support, and the city was out of power for 12 days.

"After the 110 kV Dulu line was broken, the entire transmission line of the Duyun Power Grid was broken one after another. More than 80 brothers of our transmission management office were robbed every day, but they all could not win, watching a base fall. The tower, the broken line, is really distressed." In the heart of Peng Yutao, the director of the Power Management Bureau of Duyun Power Supply Bureau, the 2008 ice disaster was a memory that was inscribed in the bottom of my heart.

“Because there are different degrees of ice coating every year, before 2008, we have formed the habit of strengthening the inspection and reinforcement of easy ice-covered lines and towers before the winter season.” In the western part of Guizhou, Liupanshui Power Grid Has been confronted with ice for decades. Under the severe test of the 2008 ice disaster, Liupanshui is the only area in Guizhou Power Grid that has no power outages at the county level and above. As one of the witnesses of the 2008 ice disaster, Zhu Yuancheng, director of the Safety Supervision Department of Liupanshui Power Supply Bureau, believes that the anti-ice experience of many years is that Liupanshui can become a few special cases of Guizhou Power Grid that suffered relatively little damage.

"As a technology research and development unit, we really want to make some contributions in the anti-ice battle, but we have never encountered such a serious ice disaster before. We have no countermeasures at all." This sudden and unstoppable fierce ice disaster, Zhao Lijin, Ma Xiaohong, Zhang Xun and others who have experienced the ice disaster have left an unforgettable impression. They look at the twisted and destroyed towers and the blackout cities. They think that they must use scientific means to conduct electrical power research in Guizhou. Defend and fight the ice disaster, minimize the threat and damage to the power grid caused by the ice disaster, and prevent it from happening. With such an initial heart, Zhao Lijin, deputy dean of the Guizhou Electric Power Research Institute and an expert in anti-ice technology research, joined Zeng Huarong, Ma Xiaohong, Zhang Xun and many other technical backbones to join the Guizhou Power Grid Anti-icing Technology Group, including the fixed type. The research on various ice melting devices such as DC ice melting device, mobile DC ice melting device and ice melting transformer has been successful.

In the Spring Festival of 2008, ice and snow are still raging. While struggling to resist ice rescue, China Southern Power Grid Co., Ltd. organized the top domestic experts to gather in Guizhou, and “consulted” Guizhou Power Grid for two consecutive days and two nights, and launched “recently taking ice melting, establishing electric emergency communication network, and line reinforcement three. Large-scale comprehensive measures, focusing on strengthening the planning and construction of power grids in the medium and long term, and improving the “prescription” of the grid's disaster prevention and support capabilities.

Take the initiative to assume social responsibilities, do not count the cost, do not count the cost to protect the people's livelihood, build a power grid that allows the people to rest assured, and do not let the disaster in 2008 repeat itself. Guizhou Power Grid Company has carried out in-depth research on anti-icing technology, continuously strengthened and improved the anti-icing system, vigorously promoted a variety of flexible methods of melting and removing ice, and continuously improved the anti-ice capacity of the power grid. In combination with the actual situation, the paper puts forward the idea of ​​strengthening the power grid structure, improving the equipment level, improving the automation level, and improving the level of informatization, such as “one strengthening and three improvement”, to improve the disaster prevention and anti-ice level of the power grid. The accumulated investment in improving the structure of the grid, post-disaster reconstruction, anti-icing reinforcement, and application of ice-melting technology reached 10.23 billion yuan. Among them, the emergency communication system of Guizhou Power Grid was completed, 985 lines of 10 kV and above were completed, and 90 sets of various types of de-icing devices and 256 sets of ice-covered online warning terminals were developed. At present, with the DC ice melting device, 79% of the 110 kV and above lines can be melted. Among them, the line covering 220 kV and above covers 99%.

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