Selection: RENON 233kWh Liquid-Cooled Energy Storage System
Rationale: The RENON 233kWh liquid-cooled system, developed in-house, integrates liquid-cooled battery modules, cooling units, a Battery Management System (BMS), modular Power Conversion Systems (PCS), and an on-site Energy Management System (EMS). A configuration of 13 units creates an array that includes an AC distribution cabinet, incorporating the power distribution system, Automatic Transfer Switch (ATS), and a station-level EMS.
Benefits: This comprehensive system ensures efficient energy storage and management, offering high reliability and flexibility to meet diverse energy requirements.
Advantage: The all-in-one design optimizes space, simplifies maintenance, and enhances overall system reliability and operational efficiency.
Configuration: 1.5MW Photovoltaic (PV) System
Rationale: A 1.5MW photovoltaic system is designed based on an estimated effective daily generation period of 5 hours. Under normal operating conditions, this PV system provides 800kW of power to the shopping center s electrical load, while the excess 700kW is stored in the battery system.
Benefits: This configuration optimizes solar power utilization by directly supplying the shopping center s energy needs and storing surplus energy for later use, enhancing energy independence and cost savings.
Advantage: The system maximizes renewable energy usage, reduces dependency on grid power, and supports sustainable energy management strategies.
Functionality: STS (Static Transfer Switch) and ATS (Automatic Transfer Switch)
Selection: Integrated within the power distribution system.
Rationale: To simplify the system architecture and enhance overall efficiency and response speed, the functionalities of the STS and ATS have been integrated directly into the power distribution system. This integration enables seamless switching between photovoltaic power, battery storage, and diesel generators without the need for additional hardware.
Benefits: The integrated design reduces installation costs and minimizes potential failure points, while also improving the system s response time and overall performance.
Battery Storage System | ||||||
| Cell Type | Module Combination | System Combination (Modules) | Capacity (kWh) | Nominal Voltage (V) | Operation Voltage Range (Vdc) | Discharge Depth |
| LFP 3.2V / 280AH | 1P52S | 5 in series | 233 | 832 | 761~923 | 90% DoD |
AC Output | ||||||
| Rated AC Output Power(kW) | Max. AC Output Power(kVA) | Rated Output Voltage(Vac) | Output Voltage Range(Vac) | Rated Grid Frequency(Hz) | Max. Output Current(A) | Adjustable Power Factor |
| 125 | 137.5 | 480 | -15%~+10%(settable) | 60(settable) | 165.4 | >0.99 |
The system employs liquid cooling for effective battery thermal management, maintaining a temperature variance of less than 4 degrees Celsius across the cells, which significantly extends battery lifespan. The liquid cooling solution is highly energy-efficient, consuming less power than traditional air conditioning methods, thereby enhancing the overall return on investment for the system.
The intelligent AC distribution system supports AC coupling for up to 16 units of 233kWh per array. It features a station-level Energy Management System (EMS) for comprehensive monitoring and control. The integrated Automatic Transfer Switch (ATS) and Static Transfer Switch (STS) within the Power Conversion System (PCS) streamline the system architecture, enhancing efficiency and response speed through automated switching capabilities.
This system combines a 233kWh liquid-cooled lithium-ion battery array with a 125kW Power Conversion System (PCS) for optimal energy storage and conversion. The built-in Energy Management System (EMS) offers remote monitoring and efficient energy scheduling, enhancing operational performance and reliability. This intelligent design ensures a seamless and sustainable energy solution.
The intelligent energy management and remote monitoring platform enable farm managers to monitor system status in real-time and optimize operational strategies. Advanced diagnostic tools provide proactive fault detection, enhancing system availability and reducing maintenance costs.
The system ensures continuous and stable power supply under all conditions, thanks to the Automatic Transfer Switch (ATS) and Static Transfer Switch (STS). Additionally, the precise liquid cooling management strategy prevents battery overheating, enhancing the overall reliability of the system.
The integration of self-generated photovoltaic power with the energy storage system significantly reduces electricity costs for the shopping center. Intelligent energy scheduling minimizes unnecessary diesel generator operation, saving fuel expenses and further lowering overall operational costs.
