Southeast Asia Information Port News (www.dnyxxg.com) With the Spring Festival approaching, rural areas across Guangxi are experiencing a peak in electricity consumption. As migrant workers return home in large numbers, coupled with the surge in rural tourism and the concentrated use of heating appliances during the Spring Festival, electricity loads in some townships are soaring. A batch of new power grid equipment—mobile substations, simple substations, and distributed energy storage devices—is quietly being deployed to villages and mountains, becoming a key force in ensuring a warm Spring Festival for rural residents.
On February 10th, at the construction site of the 110kV Chongshan substation project in Xingye County, Yulin City, a 110kV mobile substation was already in operation before the main substation construction even began. The Guangxi Yulin Power Supply Bureau of China Southern Power Grid had preemptively connected the supporting transmission lines and deployed the mobile substation to "fill in" early, ensuring that approximately 180,000 people in four surrounding townships could use reliable electricity during the Spring Festival.
In the northwestern forest area of Bobai County, a populous county, a 35kV simple substation and its supporting facilities were put into operation. The Guangxi Yulin Power Supply Bureau of China Southern Power Grid, in collaboration with neighboring wind farms, innovatively introduced clean wind power to townships such as Yong'an and Nalin through a "green power channel sharing" model. This not only revitalized surplus green electricity but also broke through the limitations of the traditional power grid structure. This is the first time the Guangxi power grid system has used wind power integrated lines to solve regional heavy overload problems.
China Southern Power Grid Guangxi Power Grid Company explained that this "modular, mobile, and short-construction-cycle" power supply model has become a "rapid response force" for the Guangxi power grid to cope with regional and periodic peak electricity demand. It is reported that during the Spring Festival of the Year of the Horse, 10 mobile substations and a number of simple substations were deployed throughout Guangxi to ensure a smooth Spring Festival for areas with soaring rural electricity demand.
Distributed energy storage devices, deeply embedded in villages and towns, have also become intelligent "shared power banks" protecting the last mile of the power grid. They store energy during off-peak hours and discharge during peak hours, effectively smoothing the load curve.
In January of this year, in the high-altitude mountainous region of Yongfu County, Guilin, three sets of sodium-ion grid-type energy storage devices with excellent cold-resistance were successfully installed on a 116-kilometer-long, winding 10-kilovolt power line. "Sodium-ion batteries have excellent cold-resistance. This device automatically stores and releases electrical energy during normal times, and provides emergency power supply during line faults in low-temperature rain and snow weather, ensuring reliable power supply," explained Xie Weiwei, manager of the Production Technology Department of the Guangxi Guilin Yongfu Power Supply Bureau of China Southern Power Grid.
In many rural areas of Guangxi, container-sized distributed energy storage devices are being deployed and put into operation one after another. "We have already put 17 such distributed energy storage devices into operation in 10 cities including Nanning, Guilin, and Yulin, and another 9 will be put into operation before the Spring Festival," said Huang Yiwei, an engineer at Guangxi Power Grid Energy Technology Co., Ltd. of China Southern Power Grid. He added that these energy storage devices not only act as a "buffer" for power safety, improving the reliability and quality of power supply, but also lay the foundation for rural areas to adopt more intermittent new energy sources such as photovoltaic and wind power in the future.
While flexible equipment is deployed on the front lines, solid "basic skills" provide the underlying support. Guangxi Power Grid utilized a big data platform to conduct real-time monitoring and load forecasting of distribution transformers across the region, accurately identifying over 1,300 devices potentially at risk of overload before the Spring Festival. This was followed by a comprehensive upgrade of power equipment: over 2,600 transformers underwent capacity expansion or replacement, and a number of power grid capacity expansion projects were accelerated for operation. Special power supply inspections were completed at 2,885 locations across the region, including major tourist attractions, transportation hubs, large shopping malls, old residential areas, urban villages, and high-rise buildings, ensuring power supply during the Spring Festival. "Health checks" covering critical power lines and equipment were also fully completed.
It is reported that Guangxi's power supply was generally sufficient during the Spring Festival, ensuring that the people of the region could enjoy a warm, bright, and peaceful Spring Festival. (End)
