परिचय
Wind-solar complementary power system, is a set of power generation application system, the system is using solar cell square, wind turbine (converting AC power into DC power) to store the emitted electricity into the battery bank, when the user needs electricity, the inverter will transform the DC power stored in the battery bank into AC power and send it to the user load through the transmission line. It is two kinds of power generation equipment, wind turbine and solar cell array, that generate electricity together.
Wind-solar complementary power system are divided into off-grid Wind-solar complementary power system and large-scale grid-connected Wind-solar complementary power system.
हेff-grid Wind-solar complementary power system
Structure
Wind-solar complementary power system is mainly composed of wind turbine, solar photovoltaic cell set, controller, battery, inverter, AC-DC load and other parts. The system is a composite renewable energy power generation system integrating wind, solar and battery technologies and system intelligent control technology.
Small wind-solar power system
(1) The wind power generation part uses the wind turbine to convert wind energy into mechanical energy, and then converts the mechanical energy into electrical energy through the wind turbine, and then charges the battery through the controller and supplies power to the load through the inverter;
(2) The photovoltaic power generation part uses the photovoltaic effect of the solar panel to convert light energy into electrical energy, then charges the battery, and converts the direct current into alternating current through the inverter to supply power to the load;
(3) The inverter system consists of several inverters, which turns the DC power in the battery into standard 220V AC power to ensure the normal use of AC power load equipment. It also has the function of automatic voltage stabilization, which can improve the quality of power supply of the wind-solar complementary power system;
(4) The control part constantly switches and adjusts the working state of the battery bank according to the changes of sunshine intensity, wind power strength and load.On the one hand, the adjusted electric energy is sent directly to DC or AC load. On the other hand, the excess power will be sent to the battery bank for storage. When the power generation cannot meet the needs of the load damand, the controller sends the battery power to the load, which ensures the continuity and stability of the whole system;
(5) The battery part is composed of multiple batteries, which plays two major roles in the system: energy regulation and load balancing. It converts the electrical energy output from wind power generation system and photovoltaic power generation system into chemical energy and stores it for use when the power supply is insufficient.
Depending on the wind power and solar radiation, the wind-solar complementary power generation system can operate in the following three modes: wind turbine alone supplying power to the load; photovoltaic power generation system alone supplying power to the load; wind turbine and photovoltaic power generation system jointly supplying power to the load.
Application Scenario
(1)Wind-solar complementary public lighting system
The system completely uses wind and solar power to supply the lamps (no external power grid). The system has the advantages of both wind and solar energy products, and is powered by wind and solar energy, and the electricity is stored in the battery, which is intelligently controlled by switch and automatically senses the change of external light without manual operation.No manual operation, mainly used in rural combination roads, highways, urban roads, levees and landscape roads .
Features: zero electricity costs, zero emissions, energy saving, environment protecting, one of the important directions of future lighting development; use of natural resources to generate their own power, no external power supply; independent power supply, no other auxiliary transmission equipment; their own power generation, operation does not require electricity expenses.
(2)Wind-solar complementary oilfield power supply system
It consists of wind and solar power supply system, transmission equipment, etc. It uses wind and solar power to generate electricity, and then combines the two to achieve complementary advantages. It is used for power supply at the well field such as pumping machine, water pump, duty room, street light, heating furnace, etc., which greatly reduces the energy consumption of the well field.
(3) Household power supply system
It is mainly used for rural households without electricity, villa vacation homes, fishing yachts and household grid-connected systems.
(4)Wind-solar complementary distributed power station system
Mainly used in distributed power station, customer-side grid-connected, islands, border guard posts without electricity village centralized power supply.
(5)Wind-solar complementary off-grid independent power supply system
Mainly used in communication base stations, gas stations, toll stations, farms, etc.
(6)Wind-solar complementary monitoring and indication system
Mainly used in: traffic monitoring, instructions system; security and defense monitoring; oil, gas, power line monitoring system; forest fire monitoring, etc.
Complementary wind and solar power generation has the following advantages over wind or photovoltaic power generation alone
(1) Lower civil construction and installation costs;
(2) With the characteristics of day and night complementary and seasonal complementary, the system is stable, reliable and cost-effective;
(3) The maintenance workload of electric facilities and the corresponding costs and expenses are greatly reduced;
(4) Independent power supply, in the event of natural disasters will not affect the electricity consumption of all users;
(5) Low-voltage power supply, safe operation and simple maintenance.
(6) The system is independent of each other and can be controlled by itself to avoid large-scale power outages and high safety;
(7) Make up for the lack of stability of the large power grid, and continue to supply power in case of accidents, becoming an indispensable and important supplement to centralized power supply;
(8) Exempt from building substations, erecting high and low voltage lines and high and low voltage distribution systems, etc;
(9) The quality and performance of regional power can be monitored in real time, which is ideal for supplying power to residents in rural, pastoral and mountainous areas, developing large, medium and small cities or commercial areas, greatly reducing the pressure on environmental protection;
(10) Low or no transmission and distribution losses, no need to build distribution stations, reduce or avoid additional transmission and distribution costs, low civil construction and installation costs;
Wind-solar complementary grid-connected power system
परिचय
Solar and wind energy are universal natural resources, but also an inexhaustible source of renewable energy. Solar and wind have strong complementarity in time and season: good sunlight and low wind during the day, no light and strong wind at night; high sunlight intensity and low wind in summer, low sunlight intensity and high wind in winter. This complementarity makes the wind/light complementary power generation system have the best match in terms of resources, which can realize continuous and stable power generation.
In addition, wind power and photovoltaic power generation systems can be common in the battery and inverter parts. The wind-solar complementary power generation system can be best configured according to the user's electricity load and natural resources, which can ensure the reliability of the system, reduce the cost of power generation and meet the user's electricity demand, and is the most reasonable, reliable, safe, economic and environmental protection power supply system.
The wind-solar complementary power generation system consists of solar panels, wind turbines, controllers, battery banks and inverters; among them, the photovoltaic system and wind power system convert solar and wind energy into electricity, then charge the battery through the controller, and finally supply power to the electricity-using load through the inverter.
System component composition:
Solar Panel: A collection of multiple solar cell modules connected together with wires on a metal stand.
Wind turbine: A power generation system consisting of wind turbine, generator and control components, etc.
Controller: System control device. The main function is to control the charging and over-discharge protection of the battery. It also plays the role of regulating and distributing the input and output power of the system, as well as other monitoring functions given by the system.
Battery bank: A device for storing electric energy composed of several batteries connected in series.
Inverter: Power electronic equipment that converts DC power into AC power.
AC load: A device or equipment powered by AC power.
DC load: equipment or device powered by DC electricity.
Grid-connected controller: Connects the inverter to the national public grid and can transmit excess power to the grid or supply power from the grid to the load.
Electricity metering device: records the amount of electricity circulating in the power generation system and the public grid.
महत्व
- Wind energy combined with solar energy to improve power generation efficiency and create more power generation capacity
- Utilize the land more fully without wasting land resources
- Bring more employment opportunities to the local area and promote local development
- Easy to centralize control and management, low operation and maintenance costs
- Reduce the use of non-renewable resources, energy saving and emission reduction, and reduce environmental pollution problems
- Increase energy supply and improve unreasonable energy consumption structure
- With day and night complementary, seasonal complementary characteristics, stable and reliable system, high cost performance;
- The maintenance workload of electric facilities and the corresponding costs and expenses are greatly reduced;
- Some components are common, reducing the cost of construction
Boland provide high quality integrated wind & solar and storage system solutions and power plant EM service.We have a relatively complete internal supply chain, service network and excellent product quality and technology and senior EPC qualification, undertake the design, procurement, construction and commissioning services of the project, and be fully responsible for the quality, safety, schedule and cost of the contracted works.
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