Off-grid energy storage small system design elements
Design elements of off-grid energy storage systems include:
Energy source:
Renewable energy: Solar energy, wind energy, hydro energy, etc., are ideal energy sources for off-grid energy storage systems.
Generation equipment: Solar photovoltaic panels, wind turbines, etc.
Storage devices:
Battery storage: Lithium-ion batteries, lead-acid batteries, etc.
Storage capacity: Determined based on load requirements to determine the appropriate storage capacity.
Energy management system (EMS):
Intelligent control: Managing energy collection, storage, and distribution through software and algorithms.
Remote monitoring: Enabling remote monitoring and adjustment of system operation.
Inverter:
DC-AC conversion: Converting stored DC energy into usable AC energy.
Voltage and frequency control: Ensuring the output power meets the requirements of devices and loads.
Backup generator:
Alternative energy source: Fuel or other substitute energy sources for unforeseen needs.
Load management:
Power load analysis: Analyzing load demands to ensure system capacity meets the load.
Load balancing: Ensuring the system can meet load requirements under any circumstances.
Safety protection system:
Overcurrent protection: Preventing system overload.
Overvoltage and undervoltage protection: Protecting the energy storage system and load devices.
The following cases showcase the diversity of off-grid energy storage systems in different application scenarios. When designing, factors such as the availability of energy resources, characteristics of load demands, system maintainability, and cost-effectiveness need to be considered.
Solar Off-grid System:
Energy source: Solar photovoltaic panels.
Storage device: Lithium-ion batteries.
Inverter: Solar inverter.
Case: Used in small communities in remote areas to provide basic lighting and power equipment support.
Wind Off-grid System:
Energy source: Wind turbines.
Storage device: High-capacity lead-acid batteries.
Inverter: Wind inverter.
Case: Power supply for tourist spots in mountainous areas, providing electricity for guidance systems and basic equipment.
Hybrid Energy Off-grid System:
Energy source: Solar photovoltaic panels and wind turbines.
Storage device: Large-capacity lithium-ion batteries.
Inverter: Hybrid solar and wind inverter.
Case: Remote islands or communication base stations requiring high reliability, providing continuous power support.
Hydro Off-grid System:
Energy source: Small-scale hydroelectric generator.
Storage device: Long-life sodium-sulfur batteries.
Inverter: Hydro generator inverter.
Case: Mountain villages or areas near rivers, providing reliable power through small-scale hydroelectric generators.
Biomass Off-grid System:
Energy source: Biomass fuel generator.
Storage device: Long-cycle lithium-ion batteries.
Inverter: Biomass generator inverter.
Case: Rural areas utilizing agricultural waste or wood for energy production, providing electricity for agriculture and households.
Hybrid Energy and Storage Microgrid:
Energy source: Multiple energy sources such as solar, wind, biomass, etc.
Storage device: Large-scale lithium-ion battery energy storage system.
Inverter: Multi-energy hybrid inverter.
Case: Large agricultural or corporate parks, building independent microgrids to meet comprehensive energy needs.
Portable Off-grid System:
Energy source: Foldable solar charging panel.
Storage device: Lightweight lithium polymer batteries.
Inverter: Small inverter.
Case: Outdoor camping, emergency rescue, and other scenarios requiring short-term power support.
Cold Chain Transport Off-grid System:
Energy source: Vehicle-mounted solar charging panel.
Storage device: High-energy-density lithium-ion batteries.
Inverter: Vehicle-mounted inverter.
Case: Transporting sensitive goods such as pharmaceuticals or food, ensuring power supply during transportation.
