On the 16th-17th of April 2025, NR Electric Co. Ltd. successfully hosted the joint workshop of the CIGRE B4.101 & B4/C4.93 on “Grid-forming Technologies & Applications”, and the working group meeting of CIGRE B4.101 “Industrial Implementation and Application of Grid Forming Energy Storage Systems (GFM ESS)”, at Changzhou, China. The two-day meetings, held in a combination of in-person and online, brought the international experts from universities, research institutes and enterprises from China, UK, Germany, Spain, Australia and other countries together to focus on the innovative applications and future development trends of grid-forming technologies, with the aim of promoting the stable operation and synergistic development of the future electric power systems dominated by renewable energy & power electronics.
Established in 1921 in Paris, France, CIGRE is a global community committed to the collaborative development and sharing of end to end power system expertise. The community features thousands of professionals from over 90 countries and 1250 member organizations, including some of the world’s leading experts. At its heart are CIGRE’s 61 in country National Committees offering diverse technical perspectives and expertise from every corner of the globe. CIGRE operates the world’s foremost knowledge programme, spanning 16 domains of work encompassing all the core areas of the power system. Across these domains 250+ Working Groups draw and build on practical expertise to solve existing and future challenges facing the power system.
The workshop was focused on the three major grid-forming technology topics: “System Requirements, Services and Function Optimizations”, “Industrial Applications and Project Experiences” and “Technical Standards and Future Trends”. Dr. Changjiang Zhan, the Convenor of CIGRE B4.101 Working Group, said, “This workshop on Grid-forming technologies and applications not only builds a technical communication platform for the international experts, but also strongly promotes the large-scale applications of grid-forming technologies for the future power systems.” Dr. Dechao Kong, the Convenor of B4/C4.93 Joint Working Group, introduced the “CIGRE’s Best Practice for Global Strategic Development of Grid Forming Technology” and the progress of B4/C4.93 Joint Working Group.
In the workshop on the April 16th, all the participating experts carried out comprehensive and in-depth sharing and exchanging technical views based on their own research and practice. Among them, NR technical expert Mr. Nannan Wang made a knowledge sharing of “Engineering Applications of NR-ISGrid Solution”, presented the original NR concept of grid-forming ideal synchronous voltage source (NR-ISGrid) and its development history. He also described the engineering solutions & application cases based on this NR-ISGrid concept, which naturally response to power system disturbances and robust support power system stability. B4.101 Working Group Secretary, Prof. Xiongfei Wang, made a report on the topic of “Control Stability of Grid-Forming Converters”, emphasizing the importance of the control stability of grid-forming converters. Dr. Xiaoyao Zhou gave an online presentation on “Grid Forming development in GB system – Grid Code, Compliance and Market arrangement”, which demonstrated the actual demands for Grid-forming technologies in the UK power market. Dr. Ahvand Jalali, gave an online presentation on “AEMO’s View on GFM Functions and Compliance Test”, which introduced the applications of Grid-forming technologies in the Australian power grid. In addition, other working group experts, such as, Dr. Yunjie Gu, Dr Jiajie Luo, Mr. Xiaoming Li, Mr. German Kuhn, Dr. Heng Wu, Dr. Xueguang Wu, Dr. Songda Wang, etc., also shared their insight views on the respective research fields.
CIGRE B4.101 Working Group meeting was held on the April 17th, mainly focusing on the progress of the technical brochure (TB), and discussing about “Background and technical challenges & requirements for the GFM Energy Storage Systems (ESS)”, “Operation and control strategies for the different types of GFM ESS systems”, “Assessment of the technical benefits of GFM ESS systems”, “Black start and restoration of the AC network system” and “Industrial good practices of the existing GFM ESS applications”. The working group also discussed related technical issues, followed by the next step of the work plan.
NR will take NR-ISGrid Grid-forming technology as the core, devote itself to the reliability, stability and resilience of electric power systems, make continuous efforts for supporting CIGRE related events & CIGRE working group activities, proactively participate in the continuous improvement, development and promoting of Grid-forming technologies and applications for future bulk power systems.