Large-Scale PV Plant + ESS Solution with Zetara Technology

Project Overview:

This case study highlights a large-scale photovoltaic (PV) plant integrated with an advanced energy storage system (ESS) utilizing Zetara technology. The project was designed to enhance energy resilience, optimize grid interaction, and support critical and non-critical loads through a robust combination of hardware, software, and technical support services. The system provides flexibility in operational modes, including grid-connected, off-grid, and hybrid modes, ensuring uninterrupted power supply and effective energy management.

System Configuration:

The large-scale PV plant features a well-coordinated infrastructure that includes PV panels, an energy storage system, power conversion units, and a sophisticated control platform. The integration of the EMS (Energy Management System) cloud platform with local SCADA (Supervisory Control and Data Acquisition) enables seamless real-time monitoring and operational control. The power and communication circuits are meticulously designed to enhance efficiency and reliability.

Key Components:

1. Battery System
2. Specifications: 5015kWh container-based solution
3. Supplier: Zetara
4. Remarks: Configurable according to specific project needs, offering large-scale energy storage capacity to stabilize energy supply and demand
5. PCS Boosting Cabin
6. Specifications: 6-44kV 2.5MW boost integrated machine
7. Supplier: Zetara
8. Remarks: Provides voltage boosting and conversion capabilities, ensuring smooth grid integration
9. PV Grid-Connected Inverter
10. Specifications: String PV inverter
11. Supplier: Zetara
12. Remarks: Designed to manage energy conversion efficiently, facilitating the flow of electricity from the PV array to the grid and storage system
13. Local Control and Monitoring
14. Specifications: Integrated operable interface on the device display screen
15. Supplier: Zetara
16. Remarks: Standard interface that enhances local management capabilities and operational transparency
17. EMS Cloud Platform
18. Capabilities: Offers an independent master account for advanced energy management, enabling remote access and control
19. Supplier: Zetara
20. Remarks: Standard solution that connects with intelligent gateway systems to provide real-time data analytics and system optimization
21. Distribution Facilities
22. Specifications: Include grid-connected and off-grid switch, protection, and measurement devices
23. Supplier: Zetara
24. Remarks: Adaptable to specific project requirements, ensuring safety and efficiency in energy distribution
25. Transformer
26. Supplier: Zetara / Third party
27. Remarks: Configurable based on voltage and load demands, ensuring compatibility with grid and off-grid operations
28. Solar Panels
29. Supplier: Third party
30. Remarks: Sourced externally with specifications tailored to the project’s energy generation goals
31. Diesel Generator

• Supplier: Third party
• Remarks: Acts as a backup power source, enhancing system reliability during grid outages or under off-grid scenarios

System Architecture:

The system architecture incorporates:

• Power Circuit: Manages the energy flow from PV generation through the battery system and inverters to the load and grid.
• Communication Circuit: Connects critical components such as the EMS cloud platform, intelligent gateway, and local SCADA, ensuring robust data exchange and control.

The infrastructure includes:

• Transformer: Balances the energy flow between the PV plant and the grid.
• PCS Boosting Cabin: Enhances voltage stability and power quality.
• Battery System: Provides energy storage and peak load management.
• Distribution Facilities: Enable seamless transition between grid-connected and off-grid modes.

Operational Capabilities:

• Grid-Connected Mode: Efficiently feeds excess solar energy into the grid, offering opportunities for revenue through energy sales.
• Off-Grid Mode: Supports critical loads independently, maintaining power supply during grid disruptions.
• Hybrid Mode: Balances between self-consumption, grid interaction, and energy storage, optimizing both cost and energy efficiency.

Outcomes:

The deployment of this large-scale PV plant with Zetara’s ESS technology delivered significant benefits:

• Energy Independence: Enabled the client to reduce grid dependency, leveraging renewable energy and stored power effectively.
• Cost Efficiency: Through peak load shifting and strategic energy management, the client achieved substantial savings on energy expenses.
• System Reliability: The integration of a diesel generator and robust battery storage provided uninterrupted power to critical loads.
• Scalability: The modular design of the battery system and PCS boosting cabin allows for future expansions, aligning with the client’s long-term growth strategy.

Conclusion:

The large-scale PV plant + ESS solution with Zetara technology exemplifies a powerful, flexible, and sustainable approach to modern energy management. By combining state-of-the-art hardware, intelligent software solutions, and tailored technical support, Zetara provided a holistic energy solution capable of meeting the complex needs of commercial and industrial applications, ensuring energy security, efficiency, and sustainability.