#Germany #Huawei #Munich #Energy Storage #LUTERRA

Huawei Introduces Revolutionary LUTERRA Energy Storage Platform

Huawei has recently showcased its innovative LUTERRA platform at the renowned Intersolar Europe event in Munich. The new generation energy storage solution is specifically designed to optimize smart string grid-forming (GFM) systems, aiming to elevate the efficiency standards within the energy sector. According to Steve Zheng, the president of Huawei's Smart ESS Business division, this platform is grounded in the advancements of technology tailored for customer success.

The LUTERRA platform has been demonstrated to achieve top efficiencies in the industry, leveraging easy-to-install battery storage solutions that offer grid-forming capabilities at the plant level. A significant highlight of its success is the operational track record of Huawei's GFM technology, which has been successfully deployed in various projects including the largest fully renewable energy microgrid at the Red Sea resort in Saudi Arabia. This ambitious project has proven stable for over two years, validating the technological prowess of Huawei's systems in coordinating energy sources across multiple locations, spanning gigawatt-hours.

In simpler projects, Huawei's technology can harness increased revenue, higher throughput, and seamless integration with solar energy systems, catering to all customer segments. The platform boasts exceptional features, such as peak efficiency in bidirectional charging (RTE), highly accurate state of charge (SOC) control, and optimization from battery cell to module, achieved through multiple disciplines including electrochemistry, thermodynamics, and predictive technology. Zheng highlighted that the company's comprehensive control over the entire solution reaches an impressive 93.1% efficiency on the low-voltage side of the Power Conversion System (PCS) at a standard temperature of 25°C, with SOC precision of 2.5% at both ends and 3% in plateau phases.

Moreover, the integrated design includes complete thermal management from cell to pack, liquid cooling systems, and high-voltage silicon carbide (SiC) switching architecture. This configuration delivers unique performance advantages for long-duration energy storage (LDES) applications, outperforming conventional products in the market. Zheng elaborated that Huawei's innovative strategy incorporates chain architecture, using optimizers for each block and controlling units for various stands, effectively addressing electrochemical inconsistencies especially during the battery lifecycle.

One of the groundbreaking developments of the LUTERRA platform is its ability to raise AC voltage to 1,000V for the first time utilizing SiC components. This not only diminishes system losses but also enhances efficiency. Furthermore, high RTE values, remarkable SOC consistency, and higher availability contribute to a solution throughput improvement exceeding 10% compared to traditional frameworks.

In terms of installation and logistics, Zheng emphasizes that Huawei prioritizes user-friendliness. For instance, the LUTERRA platform can reduce delivery times for a 1GWh Battery Energy Storage System (BESS) by at least 30%, lowering additional investment costs for a power plant (BOP) by at least 20%, while also minimizing the footprint by one square meter for every installed megawatt-hour compared to existing solutions. This efficiency is facilitated by Huawei's patented busbar architecture, allowing for adaptable installation, capacity expansion, and dynamic C-coefficients for charging and discharging throughout the project lifecycle.

Enhancing Grid Stability with State-of-the-Art Technology

The significance of grid-forming technology and its related applications continues to burgeon as a pivotal method to bolster global grid stability. Historically, frequency and voltage used to be dependent on the inertia provided by thermal power generation. However, with the gradual phase-out of fossil fuel sources replaced by variable renewable energy sources (VRE), maintaining system stability poses newfound challenges. Fortunately, advanced inverters equipped with GFM functionality can replicate similar inertia, short-circuit ratios (SCR), and essential features such as zero-state startup capabilities, making GFM an ideal choice for BESS in multiple regions including the UK, Australia, and China.

In Europe, four German transmission system operators (TSOs) recently launched a long-term inertia services market, where GFM-equipped BESS assets are qualified, and ENTSO-E, the European TSO association, has developed technical guidelines for grid-forming requirements. Zheng underscores the pivotal nature of grid-forming technology in sustaining grid stability, essential for integrating a high share of renewable energy resources. He mentions that Huawei has identified six parameters of grid-forming including inertia, short-circuit level, primary frequency control, power oscillation damping, zero-state startup, and network-islanding switching in virtual synchronous generator (VSG) mode.

Conclusion

Zheng firmly believes that advancements in grid-forming technology at the plant level are essential. For instance, in a 100 MW BESS project, numerous power electronic devices must operate cohesively in GFM mode to stabilize the power grid effectively through hardware and software synergies. He draws attention to the Red Sea project as an exemplary case.

Additionally, Huawei's technology has been applied in large-scale grid-forming initiatives across several countries, including Germany, Bulgaria, the Philippines, and China. The company’s product planning strategy concentrates on optimizing field-level solutions, having developed the largest GFM energy storage solutions available, tailored for system-level balance of plant (BOP). This strategy prioritizes not only the performance and energy density of individual BESS containers but also that of entire fields or power plants. Only with optimal field solutions can the whole plant operate effectively, as Zheng states, "One container is not truly a comprehensive energy storage system.”