At 00:20 on January 29, 2024, CNNC Huineng Dongle Beitan 100MW photovoltaic project + 50MW/200MWH independent shared energy storage project was successfully connected to the grid. The Dongle Beitan 100MW photovoltaic project belongs to the second batch of wind and photovoltaic power generation projects in the “14th Five-Year Plan” in Zhangye City, Gansu Province. The independent shared energy storage project planned to be constructed simultaneously is the largest in the country and the first commercial all-vanadium redox flow battery energy storage of CNNC Huineng.
CNNC Huineng Dongle Beitan 100MW photovoltaic project is located in Shandan County, Zhangye City, Gansu Province, covering an area of about 3,000 acres. The total installed capacity of the project is 100MW. It is planned to simultaneously build a 250MW/1000MWh energy storage power station and a 110kV booster station. The scale of this grid connection is 100MW photovoltaic and the first phase of 50MW/200MWH energy storage project. During the project construction stage, project team members need to promote the construction of both photovoltaic and energy storage projects at the same time. The tight construction schedule, large scale of the project, and severe cold weather in winter have brought huge challenges to the project advancement. Among them, the energy storage battery used in the project is an all-vanadium flow battery, which is difficult to pass through the Lianhuo Expressway culvert during transportation due to its large size. Faced with this unexpected situation, members of the project team made decisive decisions and quickly coordinated the crane for secondary transfer to ensure that the equipment could arrive at the project site on time. After the components were in place, the construction work was completed in only 30 days, 15 days ahead of the planned construction period. With practical actions, CNNC implemented the major engineering spirit of “bravely undertaking the mission, working hard, cooperating to tackle difficulties, and daring to surpass”.
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