World's First 100-MWh Grid-Forming Energy Storage Station Test in Qinghai
TapTechNews on June 19th, it was learned from the website of the People's Government of Qinghai Province that the Qinghai Electric Power Research Institute, in conjunction with Huawei and Luneng New Energy, completed the world's first 100-megawatt-hour grid-forming energy storage power station artificial short-circuit disturbance test.
As the world's first 100-megawatt-hour intelligent string-grid-forming energy storage power station, the 50 MW/100 MWh grid-forming energy storage power station in Geermu, Qinghai was officially put into operation on May 31. This artificial short-circuit disturbance test, as one of the series of tests for the performance verification of grid-forming energy storage power stations, mainly aims to verify the regulating characteristics of grid-forming energy storage units and power stations when responding to grid events.
The 50 MW/100 MWh grid-forming energy storage power station was jointly developed by the Qinghai Branch of China Green Development and Huawei Technologies Co., Ltd., adopts an intelligent photovoltaic-storage generator solution, and has characteristics such as 3 times reactive current, 5-ms inertia startup time, and 0.1 Hz to 100 Hz wide-range oscillation suppression. By reconstructing the stability of 'voltage, frequency, and power angle', it enables new energy to have the same'stable' characteristics as traditional generators, and can increase the access ratio of new energy by 40%.
The two 35-kilovolt artificial short-circuit disturbance tests carried out this time were conducted under two different working conditions: the charging state under the grid-forming control mode of the energy storage system and the discharging state under the grid-forming control mode of the energy storage system + the charging state under the grid-following control mode, comprehensively verifying the frequency and voltage regulation capabilities of the grid-forming energy storage power station when responding to grid events at different voltage levels in the 'dual-high' grid characteristic.