Background

1.The agricultural irrigation load in Shayang County and the load of industrial parks along the river fluctuate strongly with seasons. The sudden increase in peak load during the spring and autumn irrigation seasons causes tight grid capacity, while centralized wind and solar power is difficult to consume locally during non-irrigation off-peak periods;

2.The installed capacity of wind and solar bases along the river continues to expand. Traditional current-source grid-following energy storage lacks the ability to autonomously build the grid, cannot maintain voltage stability during grid faults and disturbances, and poses a risk of large-scale disconnection of new energy;

3.The station lacks digital scenario restoration tools. The real-time output of energy storage participating in peak and voltage regulation cannot be displayed intuitively, making it difficult for the grid dispatch department to quickly formulate optimal operation strategies.

Countermeasures

1.Construct the Shayang Shengli Grid-Forming Independent Large-Scale Energy Storage Power Station, adopting virtual synchronous machine grid-forming control technology. It features islanded operation, black start, fast frequency regulation, and dynamic reactive power support capabilities. It stores surplus wind and solar energy along the river and releases electricity during peak irrigation and industrial usage periods to alleviate grid capacity shortages;

2.Deploy standardized intelligent metering and remote meter reading equipment across the station, connecting to the Jingmen City Energy Integrated Management Platform. Automatically generate and export reports on wind/solar consumption, ancillary service compensation, and peak-valley trading volumes to reduce manual O&M costs;

3.Establish cloud data channels linking Shayang's riverside wind power, centralized photovoltaics, county-level substations, and energy storage stations, achieving integrated online monitoring and joint optimized dispatching of power sources, the grid, and storage;

4.Synchronize in real-time the operational status of grid-forming equipment, charge/discharge power, grid frequency and voltage, and peak/frequency regulation output curves to accurately restore the complete operational picture of the station and the county-level grid.

Project Value

1.This project is the Shayang Shengli Grid-Forming Independent Large-Scale Energy Storage Power Station. Relying on the grid-forming energy storage integrated management and control platform, it addresses pain points such as the imbalance of peak and valley loads in Shayang County, difficulties in consuming new energy along the river, and insufficient grid anti-disturbance capabilities. It delays investment in substation expansion, reduces grid peak shaving costs, breaks down data silos for wind, solar, and storage, and improves the efficiency of unified county-level energy dispatch.

2.The power station stacks multiple revenues from Hubei Power Grid peak shaving arbitrage and various grid ancillary services. The grid-forming operation mode ensures stable grid connection and power generation for wind and solar bases along the river, continuously increasing new energy utilization hours. The visualization platform realizes all-weather intelligent monitoring of the entire station, providing intuitive and precise data support for grid dispatching, station operation and maintenance, and revenue settlement.

3.The system has a built-in carbon footprint accounting function, which completely statistics the emission reduction of energy storage. It provides complete data vouchers for Shayang County's energy-saving and carbon-reduction assessment, project green certification, and carbon asset trading, assisting in the creation of a green energy demonstration base in the Hanjiang River basin.