System Intro

Solar mini-grid is a local and independent energy system that can generate, distribute, store and regulate current. It is basically a smaller version of the main grid, and can run with the large grid, or in “island mode”. In case of necessity and actual operation, it can also switch between that two mode. Solar mini-grid can extract energy from conventional energy and renewable energy or a combination of them. The more optimized Solar Hybrid grid is for using renewable energy sources (such as solar energy), the lower its environmental impact and long-term operation cost.

Sinosoar can provide one-stop turnkey service for solar hybrid power system power supply system, including design, product integration, system installation and operation and maintenance services. As a whole set of power generation system, the key technology of system integration lies in the response and guarantee of solar hybrid power system to customer’s electricity demand, as well as the matching and coordinated operation of main components. The technical team of Sino Soar Hybrid (Beijing) Technology Co., Ltd. has more than 15 years of experience in solar mini-grid product design and integration. Sino Soar always takes the customer at first priority, starting from customer needs, and finalizing in customer satisfaction. Sino Soar provides perfect mini-grid system solutions based on the actual application needs of customers.

System components

Composed of solar modules, grid-tied inverters, energy storage inverters, energy storage system, diesel generators, energy management system and related accessories.

 

System advantages

  • The mini-grid quickly builds power grid in local areas, saving construction costs.

On a small island far away from the mainland, it is necessary to lay submarine cables and erect iron towers to supply electricity through a large power grid. This is costly and time-consuming. The entire mini-grid system is cheaper and more economical than building a large power grid.

  • Mini-grid is very flexible and can realize the local consumption of solar energy.

Remote areas are rich in solar energy resources. The mini-grid uses solar energy to generate electricity and realizes local consumption for local residents. The extra electricity can be stored for later use.

  • The mini-grid has high power supply stability.

In some remote areas, although the power grid is already connected, the electricity supply is unstable and there are frequent power outages. After the use of the mini-grid as a supporting tool, the reliability of power supply can be guaranteed. After the main power is cut off, the mini -grid can operate in isolated mode, which greatly improves the productivity and living standards of local residents.

Applications

According to the statistics of island number from the maps published by different countries, there are about 100,000 islands in the world. Island power supply is an important field for the application of renewable energy mini-grid. The construction of renewable energy resources, such as photovoltaic power generation, wind power generation, and energy storage systems, could provide uninterrupted supply of pollution-free energy to those isolated islands. For islands with existing diesel power generation, the renewable energy could be integrated with diesel generator to reduce the fuel consumption, to improve the economic efficiency, as well as to reduce the environmental pollution and carbon emissions.

 

Mines and oilfields are mostly located in remote areas without electricity access while with larger electricity consumption. The power supply cost is relatively high and the power stability is low no matter connecting with new state grid or consuming with heavy oil and diesel for power generation. The Solar Hybrid System could effectively reduce the cost of electricity consumption as well as improve greatly the reliability of power supply.

 

In remote areas, the large power grid can not be covered or the laying cost is high, so the independent hybrid power system can be used for power supply. To ensure the stability of power, in a certain period of time from the grid to continue to operate. when the power grid has the conditions to cover the area, the hybrid power system can operate independently or be directly incorporated into the power grid. The switching between the two modes can be easily realized by EMS control logic of Sinosoar.

System Intro

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SINOSOAR’s core product portfolio centers around reliable energy storage in the 12V and 48V platforms. And, through close relationship with manufacturers, an increasing selection of high efficiency DC appliances and tools could satisfy the needs of more and more end-users. The latest SHS development efforts include IOT enabled devices and smart batteries, to facilitate PAYG credit management and intelligent power supply.

Off-grid Solar Power System is widely used in remote mountainous areas, unelectrified areas, islands, and telecommunication base stations etc. The system generally consists of solar photovoltaic array, charge and discharge controller, battery pack, off-grid inverter, DC load and AC load. The solar photovoltaic array converts solar energy to electricity, supplies power to the load through the charge and discharge controller and the inverter, and simultaneously charges the battery pack. In the absence of sunshine, the battery pack supplies DC through the charge and discharge controller, and the battery pack is also inverted DC power to AC power through a off-grid inverter to supply power to the AC load.

System components

System advantages

  • The off-grid system is easy to install and easy for O&M.

The off-grid system is relatively small in investment, quick to get benefit, and the system occupies small area. The time from installation to commissioning depends on the amount of work, ranging from one day to one month. It does not require special personnel and is easy to manage.

  • The off-grid system quickly solves the basic electricity demand of the population in areas without electricity.

For residents who live relatively scattered and without electricity, the off-grid Solar Home System (SHS) will be a good option to provide basic electricity supply. The installation of the off-grid Solar Home System does not need the construction of power distribution network. A power supply system with PV power generation system, electricity storage system, and indoor cabling will be installed separately for each household. SHS can meet the basic electricity demand of those scattered living households in remote areas, including lighting, phone charging, radios, DC fans, DC TVs etc.

  • The off-grid system is widely used, convenient to operate, plug & play.

Residents in areas without electricity use electricity for lighting, TV, washing machine, solar water pump, navigation light, traffic light, street light, and communication station power supply, etc.

Applications

For residents who live relatively scattered and without electricity, the off-grid Solar Home System (SHS) will be a good option to provide basic electricity supply. The installation of the off-grid Solar Home System does not need the construction of power distribution network. A power supply system with PV power generation system, electricity storage system, and indoor cabling will be installed separately for each household. SHS can meet the basic electricity demand of those scattered living households in remote areas, including lighting, phone charging, radios, DC fans, DC TVs etc.

 

Solar water pumps are the most attractive water supply method in the high-irradiance areas of the world today, especially in areas lacking electricity and without electricity. Fully automatic power generation using the available and inexhaustible solar energy, without personnel supervision, low maintenance workload, solar energy is an ideal green energy that integrates economy, reliability and environmental benefits.

 

Solar street light is composed of solar module, energy storage battery, street light, controller, light pole, etc. It is not subject to geographical restrictions, influenced by the location of power installation, and does not require excavation of roads for wiring and buried pipe construction. On-site construction and installation are very convenient. There is no need for distribution and transformation systems, and it does not consume utility grid power. The comprehensive economic benefits are good, especially for the newly increased street lights to the existing roads. Especially when applied to street lights, outdoor billboards and bus stations away from the power grid, the economic benefits are more obvious.

System Intro

Grid-tied Solar system converts the received solar radiation energy into high-voltage DC through photovoltaic array after high-frequency DC conversion, and outputs sinusoidal AC current with the same frequency and phase with the grid voltage to the grid after inverter inversion. That is to say, the solar photovoltaic power generation system is connected with the conventional power grid to jointly undertake the power supply task.

A grid connected system is connected to a larger independent grid (typically the public electricity grid) and feeds energy directly into the grid. This energy may be shared by a residential or commercial building before or after the revenue measurement point. The difference being whether the credited energy production is calculated independently of the customer’s energy consumption (feed-in tariff) or only on the difference of energy (net metering). Grid connected systems vary in size from residential (2–10 kWp) to solar power stations (up to 10s of MWp). This is a form of decentralized electricity generation. The feeding of electricity into the grid requires the transformation of DC into AC by a special, synchronising grid-tie inverter.

System components

Composed of solar modules, grid-tied inverters, step-up transformer, Transmission and distribution equipment and Lightning protection system.

 

System advantages

  • Use clean and renewable solar power generation, no carbon fossil energy consumption, no greenhouse gas and pollutant emissions, reduce environmental pollution and maintain sustainable development;
  • The battery in the photovoltaic independent system is completely replaced by the grid in the photovoltaic grid connected system, which saves the battery as the energy storage;
  • The process of energy storage and release of battery is eliminated, and the power generated by photovoltaic array is fully utilized to reduce energy loss and system cost;
  • Photovoltaic array always runs at the maximum power point, and the grid receives all the electric energy generated by solar energy, which improves the efficiency of solar power generation;
  • The parallel use of municipal power and solar photovoltaic system as the power supply of local AC load reduces the load outage rate of the whole system;
  • Grid-tied Solar system can regulate the peak load of the public power grid;
  • The distributed photovoltaic system can provide power for the local users and alleviate the transmission and distribution burden of the grid;
  • Photovoltaic modules are perfectly combined with buildings, which can generate electricity and be used as building materials and decoration materials;
  • It can resist war and disaster, improve load balance of power system and reduce line loss.

Applications