The wind-solar hybrid electric actuator uses solar energy and wind energy to intelligently supply power to the actuator through the controller in a complementary form, and at the same time charges the battery to achieve the purpose of energy saving and emission reduction, solve the problem of insufficient solar power generation alone, and promote sustainable development in some areas.
Solar energy and wind energy are highly complementary both temporally and geographically. In bad weather, it is often accompanied by strong winds. When solar power generation is not ideal, it is often when wind energy is abundant. In this case, wind and solar hybrid power generation systems can be used to replace traditional solar power generation. system. The wind-solar hybrid power generation system has the characteristics of environmental protection, pollution-free, maintenance-free, and easy installation and use.
Structure and principle of wind-solar hybrid power supply system
The wind-solar hybrid power supply system is mainly composed of wind turbines, solar photovoltaic cells, controllers, batteries, inverters, AC and DC loads, etc. A composite renewable energy power generation system integrating technology.
(1) The wind power generation part is to use the wind turbine to convert the wind energy into mechanical energy, convert the mechanical energy into electrical energy through the wind generator, then charge the battery through the controller, and supply 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 direct current into alternating current through the inverter to supply the load electricity;
(3) The inverter system consists of several inverters, which convert the direct current in the battery into standard AC220v or AC380V alternating current, to ensure the normal use of alternating current load equipment. at the same time.
It also has an automatic voltage stabilization function, which can improve the power supply quality of the wind-solar hybrid power generation system;
(4) The control part continuously switches and adjusts the working state of the battery pack according to the changes in sunshine intensity, wind force and load:
on the one hand, the adjusted electric energy is directly sent to the DC or AC load.
On the other hand, the excess electric energy is sent to the battery pack for storage.
When the power generation cannot meet the needs of the load, the controller sends the electric energy of the battery to the load, ensuring that the entire system continuity and stability of work;
(5) The battery part is composed of multiple batteries, which play two roles of energy regulation and load balance in the system at the same time.
It converts the electrical energy output by the wind power generation system and the photovoltaic power generation system into chemical energy and stores it for use when the power supply is insufficient.
The wind-solar hybrid power generation system can operate in the following three modes according to the wind and solar radiation changes:
The wind turbines supply power to the load alone; The photovoltaic power generation system supplies power to the load alone; The wind turbines and the photovoltaic power generation system jointly supply power to the load.
Comparison of wind-solar hybrid power supply and single energy power supply
Compared with wind power or photovoltaic power generation alone, wind and solar hybrid power supply has the following advantages: Utilizing the complementarity of wind energy and solar energy, a relatively stable output can be obtained, and the system has high stability and reliability; while ensuring the same power supply, the capacity of the energy storage battery can be greatly reduced; through reasonable design and matching, It can basically be powered by a wind-solar hybrid power supply system, and there is little or no need to start a backup power source such as a diesel generator set, which can obtain better social and economic benefits.
Specific application in electric valve control system
Due to the wide application of electric valves, there are also many places where they are used in remote areas that do not have power supply conditions; wind and solar complementary power supply solves the power supply problem for the entire system;
Power supply mode: DC24V, DC48V, DC72V;
Inversion: AC220V and AC380V;
Due to the high cost of the inverter system, the high power consumption of the inverter itself, and the low efficiency of the inverter process, the power supply system of the electric valve should use DC power supply as much as possible;
A. Power supply mode: wind and solar hybrid;
B. The number of times each switch is turned on: 2-3 times, one switch is counted back and forth, and each time is about 8 minutes;
C. Wireless communication method: 4G;
D. Cloud platform: access to the customer's existing cloud platform, and the specific connection method and agreement will be discussed separately; E. Power supply capacity: within 14 consecutive calendar days of rainy days, the system is required to work normally;
F. Sensors configured behind the valve: flow meter, pressure transmitter;
The main components of the wind-solar hybrid power generation system
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