en.Wedoany.com Reported - On May 31, the 50MW/100MWh Saikun Energy Storage Station, supporting the 500MW Mangya Wind Power Project of Huanghe Company in Haixi Prefecture, was officially connected to the grid and put into operation. This project is the first energy storage project deployed by Huanghe Company in Haixi Prefecture, achieving the construction and commissioning target on schedule. As a result, the total installed capacity of energy storage for Huanghe Company has increased to 873MW/2668.23MWh.
The project adopts a design of "containerized battery units (lithium iron phosphate batteries) + integrated energy storage converter and step-up transformer units," installing 10 sets of 5MW/10MWh lithium iron phosphate battery systems, connected to the Saikun 330kV step-up substation via two 35kV lines. This design forms an integrated system of "wind power collection, step-up grid connection, energy storage regulation, and flexible transmission," enhancing the regional new energy consumption capacity and grid operation stability. Zhang Enlong, Electrical Primary Supervisor (Project Manager) of the Wind Power Project Management Department of the New Energy Construction Branch, stated that as the company's only energy storage deployment in Haixi Prefecture, this project will serve as a "smart voltage stabilizer" for the Gobi wind power, charging when wind is strong and discharging when wind is weak, effectively smoothing output fluctuations, addressing the nighttime power shortage in Qinghai, and improving power quality during low-demand periods. The containerized battery units used in the project integrate liquid cooling systems, automatic fire suppression and gas extinguishing devices, with coordinated energy management systems and fire alarms, providing multiple protections such as battery cell protection, overcurrent protection, and grid connection protection.
Fan Huijie, Station Manager of the Mangya Project Department of the Haixi Branch, introduced that each set of the integrated energy storage converter and step-up transformer units is equipped with 24 215kW converters and a 5500kVA step-up transformer, featuring automatic peak shaving, primary frequency regulation, and AGC/AVC control capabilities. By supporting the electrochemical energy storage system and optimizing control strategies, the project can significantly improve the output efficiency of the wind farm and continuously enhance grid-side power quality. The project resumed construction on March 23, with a total construction period of 70 days. During this period, participating units such as the New Energy Construction Branch and the Haixi Branch overcame challenges including high-altitude hypoxia, frequent strong winds and sandstorms, and long material transportation routes. They strictly controlled the quality of key processes, prepared the start-up and commissioning plan in advance, organized technical experts to conduct comprehensive inspections of equipment and systems, and repeatedly verified the liquid cooling system and grid connection conditions, achieving "dual controllability and dual compliance" in project quality, safety, and schedule.
After the Saikun Energy Storage Station is put into operation, it can deliver 16.673 million kWh of clean electricity annually, equivalent to saving approximately 5,028.58 tons of standard coal and reducing CO2 emissions by about 13,376.02 tons, injecting new momentum into the green and low-carbon transformation of the economy and society and Qinghai's efforts to build a national clean energy industry highland.
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