Selection: 300 units with 1.67MWh battery capacity each.
Rationale: The selection of 1.67MWh capacity per unit was based on the specific on-site requirements of the frequency regulation project, incorporating redundancy into the system design.
Benefits: This configuration addresses the project’s frequency regulation needs while enhancing overall system reliability and flexibility.
Advantage: The 1.67MWh capacity per unit ensures stable and continuous operation, improving the performance and resilience of the entire system.
Selection: 150 units of 1725kW PCS boost conversion integrated cabinets.
Rationale: The PCS units were chosen for their ability to switch between grid-connected and off-grid modes, following EMS dispatch commands to perform primary and secondary frequency regulation. They work with SVG to achieve AVC, provide islanding protection, handle high and low voltage ride-through, black start capabilities, and connect to the high-voltage grid with integrated transformers.
Benefits: This configuration supports comprehensive grid stabilization features, enhancing the system’s adaptability and responsiveness to grid demands.
Advantage: The 1725kW PCS units improve the system s flexibility and reliability, ensuring smooth operation across various grid conditions while maximizing overall performance.
Battery Storage System | |||||||
| Cell Type | System Battery Configuration | Rated Battery Capacity(MWh) | Battery Voltage Range(V) | BMS Communication Interface | BMS Communication Protocol | ||
|
3.2V/314Ah |
416S1P*4*300 | 1.67*300 | 1040~1518 | RS485，Ethernet | Modbus TCP | ||
AC Output | |||||||
| Rated Power(kW) | Current Distortion Rate | DC Component | Grid Voltage(KV) | Power Factor | Power factor Adjustable Range | Rated Frid Frequency(Hz) | Grid Frequency Range(Hz) |
| 1725*250 | < 3 % (at rated power) | < 0.5 % (at rated power) | 35 | > 0.99 (at rated power) | 1 (overrun) to 1 (lag) | 60 | 55～65 |
Equipped with internal liquid cooling units, the system maintains battery temperatures within optimal ranges, even in extreme high-temperature environments, preventing performance degradation and safety risks associated with overheating.
The BMS monitors the health of the batteries, including voltage, current, and temperature parameters, ensuring optimal performance and extending battery life. Advanced algorithms predict battery aging trends, providing early warnings to facilitate maintenance planning.
Each container is equipped with lithium iron phosphate batteries, integrated power conversion systems, fire suppression, liquid cooling units, and other balance-of-plant components. The containers are designed with built-in redundancy, allowing for full-load operation and reliable 24 7 performance to meet various daily cycling demands.
Featuring high-quality battery cells combined with intelligent BMS and thermal management technology, the system significantly enhances battery cycle life and energy density, reducing the total cost of ownership (TCO).
Beyond conventional energy storage and emergency backup functions, the system seamlessly integrates with photovoltaic panels and diesel generators, allowing for flexible switching between multiple energy sources to enhance the stability of energy supply.
The system utilizes state-of-the-art perfluorohexanone fire suppression technology, which releases extinguishing agents in an extremely short time to quickly control fire sources, protecting the batteries from fire damage.
