Huawei’s smart string grid-forming ESS has undergone a rigorous technology appraisal at a meeting organized by the Chinese Society for Electrical Engineering. The committee comprised 13 experts from research institutions and companies and the appraisal meeting aimed to evaluate the key technologies and applications of the ESS solution designed to cater to a range of scenarios with a high proportion of renewables.
This appraisal had been requested by Huawei Digital Power and nine other companies and, following a rigorous review, the committee unanimously agreed that the projects developed by the applicant companies had achieved world-leading capabilities in terms of improving new power system stability and renewable energy integration. The committee also agreed that the companies had developed and adopted the ESS through research inmulti-site self-synchronized amplitude and frequency regulation technology, wideband self-stabilizing and stabilizing control technology, smart string two-stage conversion architecture and power modules.
The onsite test and operation results demonstrated that Huawei’s smart string grid-forming ESS significantly improves the grid integration of renewable energy and applies to various scenarios, including strong and weak power grids and off-grid conditions. In on-grid scenarios, Huawei’s solution demonstrates capabilities similar to synchronous generators (including synchronous condensers) in supporting the stability of voltage, frequency and power angle. In off-grid scenarios, the solution has been put into commercial use and operates reliably for a 100% PV+ESS microgrid at GWh level, the preceding tested performance reaching or exceeding the current performance in the industry.
During the meeting, Shu Yinbiao, Director of the Chinese Society for Electrical Engineering and a member of the Chinese Academy of Engineering, pointed out that the ESS developed by Huawei Digital Power features a unique architecture and has been tested and verified across multiple projects and scenarios. These tests have proven the grid-forming ESS’s capabilities to support power systems, which is a significant and innovative contribution to the development of grid-forming technologies, the tests representing important references for formulating grid-forming energy storage standards.
Hou Jinlong, Huawei board director and Huawei Digital Powerpresidentexplainedthat the grid-forming ESS is a key technology for the new energy industry and can be widely applied to various sectors. The company will continue to increase its R&D investment in core technologies such as grid forming, energy storage safety and digitalization, and work with industry partners, including power grid companies and power generation organisations, to promote the standardization of global grid-forming technology.