On May 30, CR Power, together with Huawei Digital Power Technology Co., Ltd. (hereinafter referred to as "Huawei Digital Power"), completed the performance test of the world's first 100MWh string grid-connected energy storage power station at CR Xianshuiquan Energy Storage Power Station in Hami, Xinjiang, under the guidance and support of the Energy Administration of Xinjiang Uygur Autonomous Region, Northwest Branch of State Grid Corporation of China, China Electric Power Research Institute, State Grid Xinjiang Electric Power Co., Ltd., and Electric Power Research Institute of State Grid Xinjiang Electric Power Co., Ltd. (hereinafter referred to as "Xinjiang Electric Power Research Institute").

In order to thoroughly implement the spirit of the 20th CPC National Congress, support the new energy security strategy of "Four Revolutions and One Cooperation", promote the large-scale, high-proportion and high-quality development of renewable energy, and help build a new power system, CR Power actively responded to the Notice of the National Energy Administration on Organizing Pilot Demonstration of Renewable Energy Development, followed the requirements for demonstration of new energy plus grid-forming energy storage technology, and jointly carried out research and demonstration application of active support technology for grid-forming energy storage with Huawei Digital Power.

The teams of the two sides worked closely together to face the challenges brought by tight schedule and heavy tasks. They completed the project construction task in only five months through science-based planning, careful organization, struggle with the tough weather on the project site, and successfully achieved grid connection of 25MW/100MWh grid-forming equipment for energy storage on January 27, 2024.

In order to verify the actual effect of the supporting energy storage system of new energy based on the grid-forming active support technology in meeting the technical requirements for grid connection and improvement of the stability characteristics of weak power grid, the test team composed of Xinjiang Electric Power Research Institute, CR Power and Huawei Digital Power designed a three-dimensional test scheme (unit level, multi-unit level and whole station level) with a scientific and rigorous attitude. The team completed test tasks with10 major items, 55 sub-items and 826 test points including phase angle jump, broadband oscillation, switch of grid following/forming mode, and damper performance verification. For the first time, it has verified the grid-forming functional characteristics of large-scale grid-forming energy storage power stations such as switching between grid following/forming modes, batch modification of parameters and black start capability, and successfully solved the stability problem of multi-machine parallel connection of power stations alike under grid disturbances. The comprehensiveness and penetration of the test have reached the international leading level.

The success of this test is a vivid practice in the whole process of industry-university-research cooperation in the power industry to jointly promote the accelerated development of new productivity in renewable energy sector, and provides solid data support for the application of networking technology to solve the challenges brought by the high proportion of renewable energy access to the safe and stable operation of the power system. Subsequently, the stable operation of grid-forming energy storage power stations can not only improve the grid-connected regulation performance of supporting new energy stations, but also provide stability support for the regional power grid under transient conditions, thus effectively improving the new energy consumption capacity of the regional power grid.