At present,we can design the off grid system and on-off hybrid system from more than 60 kWh to more than 1000 kWh.
Why Choose Us
G-Tech power Group was established in 2002. After more than 20 years of development, it has become a high-quality professional manufacturer that also can provide complete power supply system solution. We specialize in developing, manufacturing and operating the most reliable and safe UPS, Inverter and battery products. We specialize in producing 25KWh Solar lithium Battery, Solar Inverter Without Battery, Residential BESS 48V 100AH LiFePO4, Small Container Bess, Industrial And Commercial Energy Storage System, and other Solar BESS.
Quality Assurance
We have obtained ISO9001, ISO 14001, UN 38.3, UL, CE, IEC, CTL, ROHS, Golden Sun and other certifications.
Professional Technical Team
Our company have more than 500 employees, including more than 50 intermediate and senior technical Engineer.
Advanced Equipment
We have advanced automated module production lines for manufacturing batteries and assembling all-in-one energy storage systems for residential and commercial energy storage solutions.
Products Sell Well
Our products are widely sold in more than 100 countries and regions in Europe, USA, South Asia, Africa, Oceania, and the Middle East.
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Residential BESS 48V 100AH LiFePO4Residential ESS 48V 100AH LiFePO4 battery is used in advanced energy storage system, designed to power your world, let you control the energy yourself, GTech as a strategic partner with EVE, allread more -
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![Small Container Bess]()
Small Container BessWe can design it from 67KWH to More Than Two Hundred KWH (LFP 3.2V 220AH)read more
BESS (battery energy storage system) is a system of rechargeable batteries assembled with advanced technology and software, offering a storage and usage solution for power from renewable energy production like solar, wind, and water, or from the power grid. If you want to know the specifications and prices of Solar BESS, please contact us!
Advantage of Solar BESS
Improved use of Renewable Energy
Renewable energy has been around for a long time now, but there are many instances in which it is wasted. Without a storage solution, renewable energy can only be used when the conditions are favourable (such as when the sun's out for solar).
When you install a battery energy storage system, you can harness renewable energy, store it, and use it at a time when no energy is being produced. This enables you to use renewable energy sources much more efficiently.
Backup Power
Though some people are keen to turn to BESS as their sole power bank, others are content to rely upon it as a backup power source. In the face of more inclement weather and extended periods of blackout in some parts of the world, having a backup power source is a smart move.
The benefits to business are immeasurable, but having a BESS as a backup power for your home is also extremely beneficial. This means that you won't be cut off from the world in case of a power outage and can add security to your home or business.
Less Dependence on the Grid
One of the biggest benefits of battery energy storage is that you become less dependent on the grid after installation. Although the National Grid in the UK is comparably reliable, it's not fool proof and some parts of the UK experience more frequent power outages.
What's more, as we're facing increasing climate uncertainty, being less dependent on the National Grid has obvious benefits, as the climate could lead to increased outages.
Reduce Carbon Footprint
As we're collectively moving towards net zero, installing a BESS at your home or place of work is an excellent way to reduce your carbon footprint. Harnessing renewable energy through BESS reduces your greenhouse gas emissions and minimises pollution, offering you peace of mind as you commit to your personal carbon footprint goals.
BESS also waste much less power than other energy sources as you can store any energy that you don't consume. At a time when the UK is working so hard to meet ambitious climate targets, reducing your carbon footprint is a viable way of making a positive contribution.
Long-Term Cost Savings
Although BESS are not cheap to install, they more than pay for themselves over time. This is because you can make huge savings when it comes to your electricity bills, while having a BESS even adds value to your home and business.
Ultimately, if you can afford the initial financial outlay, installing battery energy storage at home or your place of work will have positive long-term financial implications.
What are the Possible Configurations of Solar BESS?
Independent
In this, both PV and storage systems are not physically co-located and do not share common components or control strategies. Being independent, storage responds to overall grid conditions to provide peak capacity, shift energy from off-peak to on-peak periods and provide ancillary services. Although the storage could charge from PV energy, it would only do so when grid conditions made this an economic option.
DC Coupled (Flexible Charging)
In this case, the PV and storage is coupled on the DC side of a shared inverter. The inverter used is a bi-directional inverter that facilitates the storage to charge from the grid as well as from the PV.
DC Coupled (PV-Only Charging)
This configuration is similar to DC coupled, but the storage can be charged using PV only, not from grid electricity. This is also known as the DC tightly coupled configuration.
AC Coupled
In this case, PV and storage are co-located with two separate inverters. BESS is charged by converting the PV electricity from DC to AC and then back to DC at the BESS inverter for the BESS to store it. Since there are no shared components, the storage can still act independently of the PV system.
AC coupled configurations are typically used for existing PV systems, because it's easier to just add on a second inverter, add a BESS, and then use the existing circuitry to integrate the BESS into that. DC coupled systems are more common for new PV + Storage installations.
Types of Solar BESS
Disposable Batteries
Disposable batteries, also known as primary batteries, are designed for single-use and cannot be recharged. They provide an immediate source of power but cannot be restored to their original state once depleted. Disposable batteries are commonly found in devices where long-term use or recharging is not feasible or practical.
Alkaline Batteries
Alkaline batteries are one of the most prevalent types of disposable batteries. They are composed of an alkaline electrolyte, manganese dioxide as the positive electrode, and zinc as the negative electrode. Alkaline batteries offer a relatively high energy density, providing longer-lasting power compared to other primary batteries. They are widely used in devices such as remote controls, flashlights, and portable electronics.
Lithium Batteries
Lithium batteries are known for their high energy density, lightweight construction, and long shelf life. They come in various forms, including lithium-metal and lithium-ion batteries. Lithium-ion batteries, in particular, have gained significant popularity due to their rechargeable nature and widespread use in smartphones, laptops, electric vehicles, and other portable electronic devices. They offer excellent performance and a relatively high energy-to-weight ratio.
Zinc-Carbon Batteries
Zinc-carbon batteries, also referred to as general-purpose batteries, are affordable and widely available. They are commonly used in low-drain devices such as remote controls, wall clocks, and basic electronic gadgets. While they have a lower energy density compared to alkaline or lithium batteries, they remain a cost-effective choice for applications with modest power requirements.
Nickel Metal Hydride Batteries
NiMH batteries were invented in the late 1960s. Development was more or less the result of automotive sector investments from companies like Volkswagen and Daimler-Benz. Car companies wanted better batteries that would be less expensive and more reliable.
The negative electrode in this type of battery is an intermetallic compound that includes nickel. The positive electrode is nickel hydroxide. Because the components are not consumed during discharge, NiMH batteries are rechargeable. NiMH batteries are more expensive than alkalines. A typical battery gets about 500 charges before reaching end-of-life. Unfortunately, performance degrades with discharge and you notice a definite drop-off in power as time goes by. NiMH batteries also take quite a long time to charge.
Component of Solar BESS
Battery System
The battery is a crucial component within the BESS; it stores the energy ready to be dispatched when needed. The battery comprises a fixed number of lithium cells wired in series and parallel within a frame to create a module. The modules are then stacked and combined to form a battery rack. Battery racks can be connected in series or parallel to reach the required voltage and current of the battery energy storage system. These racks are the building blocks to creating a large, high-power BESS.
Battery Management System (BMS)
The BMS is the brain of the battery system, with its primary function being to safeguard and protect the battery from damage in various operational scenarios. To achieve this, the BMS has to ensure that the battery operates within pre-determined ranges for several critical parameters, including state of charge (SoC), state of health (SoH), voltage, temperature, and current. More sophisticated battery management systems, like those used by EVESCO, have a multi-tiered framework that allows real-time monitoring and protection of the battery within the BESS not just at the cell level but at the module, string, and system level. The BMS constantly monitors the status of the battery and uses application-specific algorithms to analyze the data, control the battery's environment, and balance it. This is critical for the thermal management of the battery to help prevent thermal runaway. A well-designed BMS is a vital battery energy storage system component and ensures the safety and longevity of the battery in any lithium BESS.
Power Conversion System (PCS) or Hybrid Inverter
The battery system within the BESS stores and delivers electricity as Direct Current (DC), while most electrical systems and loads operate on Alternating Current (AC). Due to this, a Power Conversion System (PCS) or Hybrid Inverter is needed. These devices are much more dynamic than standard inverters as they can convert power bi-directionally. This means DC power from the battery can be converted to AC power for use with grid or electrical loads, and AC power can be converted to DC power to charge the battery. This effectively gives the BESS its ability to both charge and discharge. The PCS has various modes which can be set for different charging and discharging strategies based on the specific application of the BESS. For the PCS or Hybrid Inverter to be effective within the BESS, it needs to have access to the status of the battery, so it knows when to charge and when to discharge. For instance, if you set the depth of discharge (DoD) of the battery to 90%, it needs to know when the battery is at a 10% state of charge (SoC) to stop discharging. The PCS can provide a fast and accurate power response by communicating with the battery. The PCS can be driven by a pre-set strategy, external signals (on-site meters, etc..), or an Energy Management System (EMS).
Controller
If the BMS is the brain of the battery system, then the controller is the brain of the entire BESS. It monitors, controls, protects, communicates, and schedules the BESS's key components, called subsystems. As well as communicating with the components of the energy storage system itself, it can also communicate with external devices such as electricity meters and transformers, ensuring the BESS is operating optimally. The controller has multiple levels of protection, including overload protection in charging and reverse power protection in discharging. The controller can integrate with third-party SCADA and EMS for complete data acquisition and energy management.
HVAC (Heating, ventilation, and air conditioning)
The HVAC is an integral part of a battery energy storage system; it regulates the internal environment by moving air between the inside and outside of the system's enclosure. With lithium battery systems maintaining an optimal operating temperature and good air distribution helps prolong the cycle life of the battery system. Without proper thermal management, the battery cells can overheat, leading to increased degradation, malfunction, or even thermal runaway, having the correct type of HVAC system will result in better performance for the BESS and a longer life for the batteries.
Fire Suppression
The fire suppression system within a BESS is an additional layer of protection. As we mentioned earlier in the article, all BESS have a Battery Management System which ensures the battery operates within safe parameters, including the temperature. If an elevated temperature outside the set parameters is reached, the BMS will automatically shut the system down; however, in the case of a thermal runaway, the BMS cannot be relied on as the only layer of protection. That's where the fire suppression system comes in. In the event of a thermal runaway, the fire suppression system will activate; this could be activated through gas, smoke, or heat detection, depending on which fire suppression system the BESS has. Once started, the fire suppression system will release an agent which suppresses the fire, providing a cooling effect and absorbing the heat. Several options are available for fire suppression systems, and they are usually designed according to the size of the BESS enclosure. At EVESCO, we use fire suppression systems that utilize Novec1230 or FM-200, depending on the size of the system to meet international standards.
SCADA (Supervisory Control and Data Acquisition System)
SCADA focuses on monitoring and controlling the components within the BESS; it communicates with the controller via PLC (Programmable Logic Controller). The SCADA typically communicates with the BMS to monitor battery status, and it can also communicate with the PCS/Hybrid-Inverter and auxiliary meters. From the HMI (Human Machine Interface), operators can issue start/stop commands, charging/discharging commands, and set parameters for the BMS and auxiliary systems. Most BESS can integrate with third-party SCADA systems via different interfaces, including Register Map. It is possible that SCADA can take on the role of an EMS.
Energy Management System (EMS)
The energy management system is in charge of controlling and scheduling BESS application activity. To schedule the various components on-site, the EMS communicates directly with the PCS/Hybrid Inverter and BMS, frequently considering external data points from things such as the electric grid, transformers, PV arrays, and loads. The EMS is responsible for determining when and how to discharge power, which is typically decided by the application specifics such as peak shaving, load shifting, or self-consumption. An EMS will optimize BESS performance by balancing application cycling data and battery life with the asset's return on investment while at the same time considering the limitations of the BMS and PCS/Hybrid Inverter. The EMS will also collect and analyze BESS performance data, making reporting and forecasting easy.
Frequently Asked Questions
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