Hybrid Microgrids

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Distributed Energy Storage Reduces No of Gensets in Micro-Grids

Lithium storage batteries are the perfect companion to solar. They store the energy produced by day which is then converted back to 240V AC at night or periods of low solar production.

They are also the perfect companion to grid power where high reliability of power to 99.999% is required. This is commonly called “Five Nines”. Here they operate as a uninterruptible power supply.

A five-nines availability mandates a given service will be unavailable for no more than 5 minutes and 15 seconds a year. Four-nines: 99.99% could be unavailable 52 minutes and 36 seconds per year. Three-nines: 99.9% allows 8 hours and 46 minutes of downtime per year.

When you want to reduce your energy bill AND achieve Three Nines + availability, distributed energy storage in a Micro-grid is attractive.

Integrating Distributed Energy Storage with Solar and DC Gensets creates an affordable micro-grid with high reliability. We do this with a 400VDC distribution bus. This bus interconnects islands of 48VDC energy storage with Inverters, solar arrays and DC genset(s).

Of course, there can be a traditional AC genset, but better efficiency and lower running costs are achieved with either an LNG or Diesel powered DC genset.

Efficiency is the driver to lower costs and with lithium battery banks, the highest charging efficiency is using DC power sources like Solar. For reliability and “always available” demand, DC generators charge lithium banks directly.  

 

 

Option to Link Two Sites togther for redundancy or for extended range

 

Option to Link Multiple Sites with a single GENSET and Single Solar Farm. Individual sites have selected Lithium and Inverter Size to suit needs.

WHAT WE DO

We are a one-stop shop providing 10kW-100kW electricity services to anyone without a stable grid connection. We use a suite of solar-hybrid-lithium mini-grids and storage to optimize power and energy for the lowest cost of operation. We can provide 400V inter-connects between 48V sub-systems for efficient redundancy. We offer highly efficient DC generators that operate in the low voltage band with super high efficiency as they charge Lithium batteries directly. Our software solution helps you understand your current energy needs better, optimize and model new technologies for your customized energy needs and operate and control your microgrid for an enlighted energy future. 

Design based on Data

A big percentage of installed 240V AC diesel generators are oversized and operate inefficiently at low loads, increasing fuel consumption. Generator sizing in most cases does not consider actual plant operation but uses load summation, resulting in excessive security buffers.

Sizing a 48V DC solar LPG/diesel hybrid power plant is also often based on weak data and, if at all, very short term measurements. Building a system without a full picture that considers the discrepancies between assumptions and reality can result in oversized design and false expectations about savings.

 

Data Analytics

Safiery’s dedicated team of engineers use data analytics to assess each customer’s energy requirements. Customers describe their lifestyle and the appliances they wish to use.  Safiery’s AI model uses this information to tailor a complete energy solution using a combination of different replenishment power sources of solar and vehicle alternators. Customers are then presented with a three-tier weather scenario and a forecast of time to go for lifestyle options.

Monitoring

However, it’s the monitoring of this customer after system installation that closes the loop on the theory and matches the real results to the model. None of this would be possible without accurate battery energy flow analysis and the CANbus Lithium provide this.

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