Coupling Technology Solution: Kehua Data’s 2.5MW Liquid-Cooled PCS Illuminates the Green Energy Landscape of Northwest China

The vast and boundless Northwest region of China is blessed with abundant natural sunlight, symbolizing immense potential and hope. However, the intermittency and volatility of new energy sources pose challenges to the stable operation of power grids, making it a significant bottleneck for development. In this land filled with opportunities and challenges, Kehua Data has developed an efficient, flexible, and reliable grid-structured energy storage system solution centered around its 2.5MW storage converter. This solution has shone brightly in various projects across Ningxia and Xinjiang, injecting robust clean energy into the region.

Precise Control: Enabling New Energy to Respond to Demand

In the 100MW/200MWh energy storage project in Minning Town, Ningxia, Kehua Data has delivered impressive results using its “grid-structured + grid-following” coupling technology solution. The 2.5MW grid-structured energy storage converter operates in harmony with grid-following devices, acting as a “smart steward” of the power grid. When there is an excess of new energy generation, the system responds within seconds to efficiently store surplus energy. Conversely, during peak demand or insufficient generation, it precisely releases energy to ensure a dynamic balance of electricity supply and demand. This innovative model significantly enhances the local capacity for new energy absorption and regulation, and it plays a crucial role in the integrated source-grid-load project in Minning Town, paving the way for replicable commercial pathways in energy transition and improving the revenue from ancillary services for energy storage.

“Power Bank”: Brightening Green Energy Lives for 40,000 Households

In the 200MW/400MWh shared energy storage project in Guyuan, Ningxia, Kehua Data’s 2.5MW storage solution has transformed electricity supply and demand with a “super power bank” model. Kehua Data provided the complete AC-side solution for this project, where the 2.5MW storage converter serves as the key technological support, akin to a “stabilizer” for the power grid, enabling precise power regulation. This large-scale project operates like a “power bank” that can charge and discharge up to 400,000 kilowatt-hours, meeting the daily electricity needs of 40,000 three-person households. With a discharge system efficiency of up to 96%, it can be fully charged in just two hours. These remarkable figures are made possible by the 2.5MW storage converter, which provides stable operation and efficient performance, ensuring solid support for the storage and utilization of local green energy.

Ironclad Protection: Building Resilience in Extreme Environments

In the 130MW/260MWh energy storage project in Korla, Xinjiang, Kehua Data’s 2.5MW storage converter exhibits excellent environmental adaptability amid harsh sandstorms. With an IP65 protection rating, it effectively resists sand and dust erosion. Its comprehensive insulation monitoring system ensures operational safety, while the top air outlet design reduces the “heat island effect” in the station. Positioned deep within the desert, it serves not only as a “stabilizing anchor” for the energy storage system but also enhances the grid’s frequency response speed to milliseconds, transforming the desert into an energy oasis.

Liquid Cooling: Creating a Closed Loop for Wind and Solar Storage Industries

The 30MW/60MWh wind power storage project in Changji, Xinjiang, further demonstrates Kehua Data’s robust grid-structured technology. Twelve 2.5MW storage converters equipped with a liquid cooling system maintain high efficiency even in extreme temperature variations. Paired with 45 units of 6.7MW high-capacity wind turbines, the system smooths out fluctuations in wind and solar energy with over 8,000 charge-discharge cycles, achieving an annual electricity generation of 630 million kilowatt-hours and significantly reducing wind curtailment rates. Notably, its millisecond-level power response capability establishes a “24-hour stable power supply” system, supporting the closed-loop development of the wind and solar storage industry in Mulei County, ensuring that clean energy can be effectively generated, stored, and utilized.

From the Helan Mountains to the Tianshan Mountains, and from the Gobi Desert to the heart of the desert, Kehua Data’s 2.5MW storage converter has become the preferred choice for numerous projects. Its exceptional high-protection design and advanced liquid cooling technology make it stand out, with a high protection rating of IP65 and C5 corrosion resistance. It operates stably in extreme temperatures, whether high or low, and in harsh environments such as high salinity. Moreover, its “liquid cooling + top air outlet” cooling design can reduce the ambient temperature of the entire station by 8°C, extending the lifespan of the equipment by 50%. It operates without derating in environments of up to 45°C, ensuring the safe and stable operation of the station.

As the “dual carbon” strategy continues to advance, Kehua Data will maintain its competitive edge, contributing to the green energy initiatives not only in Northwest China but across the nation. This effort aims to spread the glow of green energy to every corner and lead the energy sector toward a brighter future.