Good News | The first sodium-ion battery energy storage device developed by VASTSIB for the Huabei Oilfield has been put into operation.
2024-02-22 13:53
Recently, the first 100-kWh sodium-ion battery-based integrated photovoltaic-storage near-zero-carbon system developed by VASTSIB was put into operation at Well 25-6 in Beijing, marking the debut of mobile, skid-mounted sodium-ion battery energy storage equipment in an oilfield setting. Sodium-ion batteries boast advantages such as excellent low-temperature performance and resistance to high-current surges, making them well-suited to the geographic and climatic conditions found in oilfields. They successfully address the previous challenges of significant low-temperature capacity degradation and high costs associated with lithium-ion batteries. This breakthrough can provide robust and reliable technological support for China's petroleum industry as it advances energy conservation, emission reduction, and its "dual-carbon" strategy.
The core sodium-ion cells of this energy storage device utilize a high-performance layered metal oxide cathode material independently developed by ZheJiang VASTSIB Technology Co., Ltd. This material boasts high capacity, long lifespan, low gas generation, low-temperature tolerance, and high safety. Even under extreme low-temperature conditions in northern regions, it can still deliver nearly 85% of its rated capacity, with a cycle life of up to 6,000 cycles.
In addition to advanced battery technology, VASTSIB has also addressed key technical challenges in sodium-ion battery energy storage systems, including wide-voltage-range inversion, high-frequency load power tracking, wide-voltage-range battery equalization, and predictive energy management. It employs a self-developed cloud-platform system that enables centralized online management of tens of thousands—or even hundreds of thousands—of oilfield energy storage systems.
Since mid-November 2023, this 100-kWh sodium-ion battery energy storage system has successfully passed extreme low-temperature tests in the Langfang area, where temperatures dropped as low as minus 18 degrees Celsius. During this period, the system has cumulatively supplied power to oil wells totaling over 7,000 kilowatt-hours, including more than 5,000 kilowatt-hours from photovoltaic power generation and over 2,000 kilowatt-hours from off-peak grid electricity. The energy conversion efficiency exceeded 90%. Throughout the testing process, by seamlessly switching between photovoltaic power generation and off-peak grid electricity, the system achieved both “maximum absorption of clean new-energy power” and “minimization of grid electricity costs.”
On February 20, 2024, the Blog of China National Petroleum Corporation reported on our company's newly developed energy storage system and gave it high praise.
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