On January 17, CR Power, together with Huawei Digital Power Technologies Co., Ltd. (Huawei), completed the world's first grid-connection performance test validation of the grid-forming PV energy storage system at the CR Poverty Alleviation Photovoltaic Power Station in Gonghe County, Qinghai Province.

To break through the technical bottleneck of weakening grid operation characteristics that restrict the delivery of high proportion of new energy, CR Power and Huawei carried out a scientific research project to test and validate the PV energy storage system based on the new technology route for active support of grid-forming voltage source, in accordance with arrangements in the plan for modern energy system construction and the plan for science and technology innovation during the "14th Five-Year Plan" period. The PV energy storage system simulated the external characteristics of synchronous generators to actively support the transient stability during weak grid faults.

In this test, an empirical test environment was set up at the CR Poverty Alleviation Photovoltaic Power Station in Gonghe County, Qinghai Province, and an expert team of CR Power Technology Research Institute was sent to complete a total of 180 grid-connection performance tests for the PV energy storage system together with Huawei. The researchers made a comprehensive comparison and empirical study on the frequency and voltage modulation characteristics of the PV energy storage system under transient weak grid conditions respectively with actively supported grid-forming and traditional grid-following technologies, which set a precedent in the global industry. Under the guidance and support of China Electric Power Research Institute and Qinghai Electric Power Research Institute, the field test was successfully completed and the results were highly recognized by the electric power research institutes and other relevant units.

This joint innovation project of CR Power and Huawei marks an important milestone in the development of new energy technologies. It validates the key role of energy storage systems for new energy based on actively supported grid-forming technology routes in enhancing the operational characteristics of power grids and realizing high-proportion renewable energy targets, and also provides a strong theoretical basis and practical support for the safe and stable operation of new power systems based on new energy sources.