The WHES PA-3.0EU is a containerized Battery Energy Storage System (BESS) engineered for utility-scale and large commercial & industrial applications. Offering a wide configuration range from 744kW/1490kWh to 1488kW/2980kWh, its core design is built to meet the stringent demands of grid-level applications for high performance, supreme safety, operational flexibility, and ease of deployment. As WHES's flagship product for the large-scale storage market, the PA-3.0EU integrates advanced battery management technology, intelligent thermal control, and multi-layer safety protection, all powered by the WHES OS energy management platform to ensure exceptional operational efficiency and economic return throughout its entire lifecycle.
1. Enhanced Performance and Reliability
The performance cornerstone of the PA-3.0EU is its innovative battery string architecture. Unlike traditional parallel configurations, this design isolates battery clusters on the DC side. Its primary advantage is the ability to isolate single-point failures—if an issue occurs within one battery string, the fault is effectively contained, minimizing the impact on overall system operation and significantly enhancing system availability. Furthermore, this architecture fundamentally eliminates State of Charge (SOC) imbalance between clusters (the "barrel effect"), ensuring all clusters work synergistically and efficiently, thereby extending the overall system's cycle life and usable capacity.
Confronting harsh environmental challenges, the PA-3.0EU demonstrates remarkable adaptability. Its most prominent feature is the capability for full-power operation at 50°C ambient temperature without derating. This means in high-temperature regions or during summer peaks, the system can still charge and discharge at its rated maximum power without output reduction due to heat, guaranteeing performance is not compromised when the grid needs it most. The system operates reliably across a broad temperature range of -25°C to +60°C.
2. Comprehensive Safety and Protection Design
Safety is paramount for utility-scale energy storage projects. The PA-3.0EU constructs a multi-layered safety fortress, from external to internal, passive to active.
- Physical Protection: The system boasts high ingress protection ratings: IP67 for the battery section (dust-tight, protected against temporary immersion) and IP65 for the Power Conversion System (PCS) section (dust-tight, protected against water jets), ensuring stable operation in harsh outdoor conditions.
- Four-Level Fire Protection: The system integrates a combined active and passive four-stage fire protection scheme, comprising: 1) Smoke/Heat Detection (early warning); 2) Aerosol Fire Suppression (rapid suppression of initial cell thermal events); 3) Water Spray System (prevents fire spread, controls ambient temperature); 4) Pressure Relief Device (safely vents gases produced during thermal runaway). Additionally, optional Flammable Gas Detectors and Vent Plates are available for further prevention and mitigation of thermal runaway risks.
- Standards Compliance: The product design complies with key international and regional standards such as IEC 62619, IEC 63056, IEC 62477, IEC 61000, UN38.3, and the EN 50549 series, providing a solid foundation for project financing and grid interconnection permits worldwide.
3. Efficient Operation and Flexible Configuration
The PA-3.0EU is designed to optimize project economics, with flexibility manifested in multiple dimensions.
- Flexible Cluster Reduction & Capacity Expansion: The system supports "flexible cluster reduction." This allows for the selective enabling or disabling of battery clusters based on initial project requirements or grid dispatch commands, enabling adaptation between different discharge duration solutions (e.g., 2-hour or 4-hour) to optimize operational strategies. Its modular design also facilitates future large-scale capacity expansion.
- Efficient Power Conversion: On the AC side, the system has a rated voltage of 690V and supports full power factor operation from -1 to +1, enabling simultaneous provision of active and reactive power to support grid voltage regulation. Its output current total harmonic distortion (THDi) is less than 1%, ensuring high-quality grid integration.
- Intelligent Thermal Management: The battery section employs liquid cooling, which offers higher cooling efficiency and better temperature uniformity compared to traditional air cooling. This ensures battery cells operate within an optimal temperature range, which is key to achieving full-power operation at high temperatures and extending battery life.
4. User-Friendly Deployment and Maintenance
The PA-3.0EU adopts an All-in-One (AIO) containerized design. All core components (batteries, PCS, BMS, cooling system, fire protection) are pre-integrated, pre-installed, and pre-commissioned at the factory. This drastically reduces on-site installation workload, wiring error risks, and commissioning time, enabling rapid "plug-and-play" deployment.
- Simplified Maintenance: The system features an automatic fluid refill and replacement system that manages coolant levels autonomously, reportedly reducing maintenance time by 50% and lowering overall operational costs throughout the system's lifecycle.
- Compact Design: With standard 20-foot container dimensions (6058 * 2438 * 2896 mm), it optimizes footprint, facilitates transportation, and simplifies site layout. Operating noise is kept below 75 dB, ensuring minimal environmental impact.
5. Technical Specifications Overview
The system offers multiple models to match different scale requirements. Taking the mid-range model IA-1116 kW/2230kWh-DA10 as an example:
- Battery: Utilizes Lithium Iron Phosphate (LFP) cells rated at 3.2V/280Ah. The battery pack configuration is 1P52S. The nominal battery voltage is approximately 1331.2V, with an operating range of ~1164.8V to 1497.6V. Maximum charge and discharge power are 1092kW and 1146kW, respectively.
- AC Side: Rated output power is 1116kW (comprising 6 units of 186kW each). Rated voltage is 690V, frequency 50/60Hz, and rated output current is 933A.
- General Data: Operating humidity 0-95% (non-condensing), altitude ≤3000m (derating above 2000m), communication via Ethernet, and installation is floor-standing.
In summary, the WHES PA-3.0EU is more than just an energy storage device; it is a "power plant-grade" solution integrating high-performance hardware, intelligent management, and multi-layer safety assurance. Its unique string architecture and high-temperature full-performance capability ensure exceptional availability and environmental adaptability. Its four-level fire protection and strict certifications build a trustworthy safety baseline. Through flexible configuration and user-friendly AIO design, it meets the comprehensive needs of project planning, rapid deployment, and convenient operation and maintenance, serving as a reliable cornerstone for supporting a stable, efficient, and green modern power system.
