Huawei invited its global clients and partners to experience the progress and potential of solar power at its exhibition booth at Intersolar Europe 2022 in Germany.
Huawei has demonstrated how it combines solar with energy storage and intelligence to accelerate the deployment of solar power as mainstream energy.
FusionSolar Smart PV Solution 6.0
Huawei’s FusionSolar Smart PV Solution features the Smart String Inverter. It delivers clean solar power by integrating digital and power electronics technologies while promoting the digital and intelligent development of the PV industry.
Safety and Reliability for Power Plants
Huawei launched the Smart String-Level Disconnector Technology (SSLD-TECH), achieving active DC disconnection and precise string-level disconnection. SSLD-TECH accurately identifies and reliably cuts off common DC system faults. It can break reverse string connection/reverse current flow and inverter short circuit.
Huawei’s Smart PV Solution has achieved a 99.999 percent availability based on the operation data of the 2.2 GW project in Qinghai, China, according to a report issued by TUV in March 2022.
Huawei said the intelligent grid connection algorithm enables a PV system to be adapted to various grid scenarios. Specifically, it enables excellent performance in terms of frequency and voltage in a weak grid environment and comprehensively improves PV power plants’ voltage and power control capabilities. When the value of SCR is as low as 1.2, the intelligent grid connection algorithm ensures that the inverter runs at full power without derating and successfully passes through high and low voltage continuously.
Huawei’s Smart PV & Storage Solution can be used to build a voltage source power station, which is compatible with the power grid. This verified that Grid Forming technology can increase the proportion of new energy access this year, based on the integration of optical storage.
The Grid Forming technology completes technical verification in a weak grid environment, accelerating PV power generation from “Grid Supporting” to “Grid Forming”, and advancing solar power to become a main energy source.
Increase Power Generation and Make Optimal Investment
Huawei string inverters use multi-channel maximum power point tracking (MPPT) that solves the problem of string mismatch, and the Smart DC System (SDS) to achieve more than 1 percent increase in power generation through the integration of AI algorithms.
In Guangxi, China, the solution increases power generation by 1.69 percent. Huawei cooperates with more than 10 brands of tracking solar panels to provide users with a better experience. Real-time data from multiple global projects shows that Huawei’s smart PV solutions can significantly increase power generation and help customers shorten their investment payback period.
Smart I-V Curve Diagnosis 4.0 has revolutionized traditional operation and maintenance methods. It is offering a online inspection of 100 MW power plants in 20 minutes, and automatically generating diagnosis reports. It can scan regularly within flexible times, providing a better user experience.
In addition, it supports 14 types of fault diagnosis, with a converge rate of more than 80 percent of main faults. The key indicators of IV detection, the recognition rate, accuracy rate, and recurrence rate are all greater than 90 percent. This meets the industry’s highest level of CGC appraisal IV classification certification Level 4. In a real-life application, it helped the 30 MW project of a Malaysian customer save 2,000 hours of workload every year.
Smart String ESS: FusionSolar for Optimal Levelized Cost of Energy Storage (LCOS)
Energy storage plays an important role in electricity generation, transmission, distribution, and consumption within the clean energy system. An Energy Storage Solution (ESS) serves as a power reserve and a grid regulator and stabilizers simultaneously, providing valuable resources for peak shaving and frequency regulation.
Due to cell mismatch, conventional energy storage solutions are characterized by limited capacity, short service life, complex O&M, and significant safety risk, inhibiting their widespread application. With over ten years of R&D experience in ESS, Huawei integrates digital, power electronics and energy storage technologies in a unique smart string structure to overcome the limitations of lithium batteries. Suitable for peak shaving and frequency regulation, Huawei’s Smart String ESS delivers a flexible and cost-effective solution with higher profit potential.
Huawei adopts four innovations to boost energy throughput in battery charging and discharging, offering a solution to cell mismatch.
The pack-level optimization of Smart String ESS enables independent charging and discharging of cells to prevent mismatch loss.
Rack-level optimization improves energy throughput by 15 percent or reduces the initial configurations by 15 percent at the same energy throughput by eliminating the risks of circulating currents.
With distributed cooling, temperature difference in the container can be controlled within 3°C at a 0.5 C-rate, which extends the battery life by 50 percent.
The all-modular design, efficient and reliable, cuts the levelized cost of energy storage (LCOS) by 20 percent and generates more revenue.
The problem of cell mismatch is intensified during the operation of a PV plant, which requires routine shutdowns for the manual calibration of battery state of charge (SOC). Through Huawei’s pack-level optimization, automatic SOC calibration is carried out without the need to pause operations. The easy replacement of faulty modules eliminates the need for onsite visits by experts, significantly reducing O&M costs. Pre-installed with battery cells, each container weighs less than 30 tons, making it easy to transport the container.
Safety and Reliability
Huawei has implemented four-layer active shutdown and two-level passive isolation of ESS protection ensure all-around system safety.
Huawei energy storage solution achieves the streamlined management of battery discharging with the Smart Rack Controller, ensuring longer, constant power output which is critical to frequency regulation. Huawei’s automatic SOC calibration and high availability address the industry challenges for ESS in frequency regulation scenarios, such as high SOC balance frequency and component failures, reducing operating expenses for customers. For peak shaving, the Pack Optimizer and the Smart Rack Controller increase power output by 15 percent during the life cycle, generating higher revenues for customers.
Smart PV Solution 2.0: FusionSolar
Huawei launched 1+3 C&I Smart PV Solution 2.0, including an all-new three-phase inverter (SUN2000-50KTL-M3), a Smart String ESS (LUNA2000-200KWH-2H0), which can be coupled with the 100kW power conditioning system (PCS), and a smart PV optimizer (MERC-1100W/1300W-P). The C&I Smart PV Solution will help industries move into a low-carbon era with optimized electricity costs, active safety, and smart O&M for an enhanced experience.
Huawei has launched the latest MERC-1100W/1300W-P optimizer, increasing installation volume by up to 30 percent. When the system capacity is elevated from 175kW to 200kW, 15 percent increase in installation volume can contribute 25,000 kWh of additional electricity. Smart String ESS improves energy throughput by 2 percent-5 percent during the service life, which further reduces the electricity cost.
The installation of the optimizer enables module-level management and the real-time monitoring of the power plant operation, cutting O&M costs by 50 percent. The automatic SOC calibration of the ESS saves personnel site visit and reduces O&M costs.
Residential Smart PV Solution 3.0: FusionSolar
Huawei presented the upgraded “1+4+X” design this year. Featuring a smart energy controller which connects a module controller, an ESS, an EV charger, and a management system, the integrated solution enables a smart power consumption ecosystem. This enhances PV self-consumption rate to 90 percent from 70 percent in the previous generation, bringing an all-around clean energy experience to homes with lower electricity costs, active safety, and intelligent assistance.
Huawei has launched a new solar EV charger for residential use with easy indoor and outdoor installation, delivering convenient fast charging.
SUN2000-600W-P Smart Module Controller performs well for high-power modules. The flexible design coupled with the optimizer is suitable for any rooftop while supporting shading conditions and multi-directional installation.
Compared to traditional power generation from oil, Huawei Smart Micro-grid Solution saves LCOE over 50 percent. Adopting a 2:1 PV/BESS ratio, the solution can reduce the initial configurations by up to 50 percent.