CN117204242A - An agricultural photovoltaic power generation system - Google Patents

Abstract

The invention discloses an agricultural photovoltaic power generation system, which comprises an agricultural greenhouse, a photovoltaic power generation module, an inverter, an energy storage module, a detection module, a ventilation module and a spray irrigation module, wherein the photovoltaic power generation module is fixedly arranged at the top of the agricultural greenhouse; the photovoltaic power generation module is used for collecting solar energy and converting the solar energy into direct current. Through setting up photovoltaic power generation module, dc-to-ac converter, energy storage module, can gather solar energy and convert solar energy into direct current, accomplish simultaneously that the direct of electric energy, exchange conversion and accomplish electric energy storage and output to with the electric energy effect in the aspect of agricultural production, not only increased the utilization ratio of solar energy, reduced the power consumption puzzlement of agriculture moreover, resources are saved.

Description

An agricultural photovoltaic power generation system

Technical field

The invention belongs to the technical field of agricultural photovoltaic power generation, and specifically relates to an agricultural photovoltaic power generation system.

Background technique

Photovoltaic power generation system is a power generation system that uses solar cells to directly convert solar energy into electrical energy. Its main components are solar cells, batteries, controllers and inverters. It is characterized by high reliability, long service life, no environmental pollution, independent power generation and grid-connected operation. It is favored by corporate organizations in various countries and has broad development prospects. Photovoltaic power generation uses the photoelectric effect to directly convert solar radiation energy into electrical energy. The basic device for light-to-electricity conversion is the solar cell.

Agricultural production combined with photovoltaic power generation is not only a new agricultural development situation but also a new photovoltaic power generation system construction model. The development of green energy and the planting of pollution-free vegetables are in line with the current social development requirements. Photovoltaic agricultural integrated grid-connected power generation combines solar power generation and modern agriculture. The high-efficiency combination of planting and breeding can use agricultural land to directly generate electricity at low cost. On the other hand, existing agricultural production areas provide space guarantee for the laying of related power equipment. This is an ecological combination application. Photovoltaic agriculture complies with the biological chain relationship and the requirements of the best biological production raw material energy system, follows the production laws of agricultural products and innovates material and energy conversion technology to achieve the purpose of intelligent light supplementation, water replenishment and temperature regulation, and the agricultural products it produces will be better than today's Products produced in a certain way are safer, more nutritious and more productive.

For example, a photovoltaic power generation device for agricultural greenhouses disclosed in the authorization announcement number CN108199671A includes a photovoltaic power generation bracket body, photovoltaic components fixed on the photovoltaic power generation bracket body and an agricultural greenhouse. A roof structure is arranged at the upper end of the agricultural greenhouse. Several groups of photovoltaic power generation bracket bodies are arranged in parallel on the upper part of the roof structure and are installed in the north-south direction for tracking the movement direction of the sun. Each group of photovoltaic power generation bracket bodies passes through the front column, rear column and roof structure respectively, and each group of photovoltaic power generation bracket body passes through Although the linkage rod connection can realize the adjustable angle, real-time tracking of the sun's irradiation, improve light utilization, increase power generation, and has a simple structure, there are still some problems in the existing agricultural photovoltaic power generation system. The specific problems are as follows: Photovoltaic power generation system The integration with agricultural production is not strong enough. The electric energy generated by the photovoltaic power generation system is not convenient for use in the temperature regulation part and the sprinkler irrigation part of agriculture. This leads to the problem of difficulty in using electricity in agriculture when establishing photovoltaic power generation systems. To this end, we propose an agricultural photovoltaic power generation system.

Contents of the invention

The purpose of the present invention is to provide an agricultural photovoltaic power generation system to solve the problems raised in the above background technology.

In order to achieve the above objectives, the present invention provides the following technical solution: an agricultural photovoltaic power generation system, including an agricultural greenhouse, a photovoltaic power generation module, an inverter, an energy storage module, a detection module, a ventilation module and a sprinkler irrigation module. The photovoltaic power generation module is fixedly installed on On the top of the agricultural greenhouse, the inverter is electrically connected to the photovoltaic power generation module, the energy storage module is electrically connected to the inverter, the ventilation module and sprinkler irrigation module are electrically connected to the energy storage module, and the detection module is electrically connected to the ventilation module and sprinkler irrigation module. connect;

Photovoltaic power generation modules are used to collect solar energy and convert solar energy into direct current;

The inverter is used to convert DC power into AC power, output power to the energy storage module, and convert the power of the energy storage module into AC power for use by the load within a predetermined time period;

The energy storage module is used to store electrical energy while outputting electrical energy to the load;

The detection module is used to detect the temperature and soil moisture inside the agricultural greenhouse. When it detects that the temperature inside the agricultural greenhouse is too high and the soil moisture is low, it transmits the signal to the ventilation module and sprinkler irrigation module to make them work;

The ventilation module is used to receive signals of excessive temperature inside the agricultural greenhouse and cool down the interior of the agricultural greenhouse;

The sprinkler irrigation module is used to receive signals of low soil moisture inside the agricultural greenhouse and perform sprinkler irrigation on the soil inside the agricultural greenhouse.

Preferably, the photovoltaic power generation module includes a photovoltaic deployment bracket and a solar panel. The solar panel is used to collect solar energy. The photovoltaic deployment bracket is used to install the solar panel. The photovoltaic deployment bracket is set on the top of the agricultural greenhouse. The photovoltaic deployment bracket is used to adjust. The inclination angle of the solar panel enables the converted electrical power of the solar panel to reach a predetermined power.

Preferably, the energy storage module includes a photovoltaic battery pack. The photovoltaic battery pack is used to store electrical energy. The photovoltaic battery pack is composed of multiple photovoltaic cell nodes connected in series and parallel to each other. Real-time current information is obtained and the power supply current of the photovoltaic battery pack is calculated. as follows:

Among them, I ₁ and I ₀ are the photogenerated current and the reverse saturation current respectively; q is the basic charge; U is the photovoltaic cell output voltage; T is the temperature; A is the junction characteristic factor; k is Boltzmann's constant; B is the weight Factor; R ₀ is the starting resistance to ensure the safety of the circuit; R ₁ is the line resistance; R _{i, j} is the diode resistance combination matrix in the photovoltaic circuit, where i and j respectively represent the row and column numbers of the diode resistance in the circuit, n, m respectively represent the maximum value of the row and column numbers of the diode resistance in the circuit.

Preferably, the detection module includes a temperature sensing component and a humidity sensing component. The temperature sensing component and the humidity sensing component are both arranged inside the agricultural greenhouse. The temperature sensing component includes a temperature sensor. The temperature sensing component is used to detect the interior of the agricultural greenhouse. To detect the temperature, the humidity sensing component includes a humidity sensor, which is used to detect the soil moisture inside the agricultural greenhouse.

Preferably, the ventilation module includes an exhaust fan and an indoor heater. The exhaust fan is used to ventilate the agricultural greenhouse and reduce the temperature inside the agricultural greenhouse when the temperature inside the agricultural greenhouse is too high. The indoor heater is used when the temperature inside the agricultural greenhouse is too low. , perform heating treatment on agricultural greenhouses to increase the temperature inside the agricultural greenhouses.

Preferably, the working steps of the ventilation module include: when the temperature sensing component detects that the temperature in the agricultural greenhouse is high, transmit the signal to the exhaust fan, supply power to the exhaust fan through the energy storage module, ventilate the agricultural greenhouse, and reduce the agricultural waste. The temperature inside the greenhouse; when the temperature sensing component detects that the temperature in the agricultural greenhouse is low, the signal is transmitted to the indoor heater, and power is supplied to the indoor heater through the energy storage module to heat the agricultural greenhouse and increase the number of agricultural greenhouses. internal temperature.

Preferably, the sprinkler irrigation module includes a water pump, a water supply device, a dosing device, a sprinkler pipe and a sprinkler head. The water supply device and the dosing device are connected to the sprinkler head through a water pump and a sprinkler pipe. The sprinkler head is set in the agricultural greenhouse, and the water supply device is used in the agricultural greenhouse. When the soil moisture inside the agricultural greenhouse is low, water supply and sprinkler irrigation are performed, and the dosing device is used to spray pesticides on the crops in the agricultural greenhouse.

Preferably, the working steps of the sprinkler irrigation module include: when the humidity sensing component detects that the soil humidity in the agricultural greenhouse is low, the signal is transmitted to the water pump, so that the water pump takes water from the water supply device and performs sprinkler irrigation work through the sprinkler pipe and sprinkler head. .

Preferably, the agricultural photovoltaic power generation system also includes a meteorological observation module, which is used to observe weather conditions and set up preventive measures to prevent natural disasters in a timely manner.

Preferably, the agricultural photovoltaic power generation system also includes a wireless communication module, which is a Bluetooth module, WIFI module, GSM module, GPRS module, CDMA module, CDMA2000 module, WCDMA module, TD-SCDMA module, Zigbee module or LoRa module.

Compared with the prior art, the beneficial effects of the present invention are:

By arranging photovoltaic power generation modules, inverters and energy storage modules, the present invention can collect solar energy and convert the solar energy into electric energy. At the same time, it can complete the DC and AC conversion of electric energy, complete the storage and output of electric energy, and use electric energy in agricultural production. On the other hand, it not only increases the utilization rate of solar energy, but also reduces the power consumption problems in agriculture and saves resources.

By connecting the detection module, ventilation module and sprinkler irrigation module with the energy storage module, the present invention can output the converted electric energy to the detection module, ventilation module and sprinkler irrigation module to provide power for the detection module, ventilation module and sprinkler irrigation module, thereby providing agricultural services. Electricity provides convenience. In addition, the temperature and soil moisture inside the agricultural greenhouse are detected through the detection module. With the ventilation module and sprinkler irrigation module, the temperature inside the agricultural greenhouse and the soil moisture inside the agricultural greenhouse can be adjusted, thereby having Conducive to agricultural production work.

Description of the drawings

Figure 1 is a structural block diagram of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

Please refer to Figure 1. The present invention provides a technical solution: an agricultural photovoltaic power generation system, including an agricultural greenhouse, a photovoltaic power generation module, an inverter, an energy storage module, a detection module, a ventilation module and a sprinkler irrigation module. The photovoltaic power generation module is fixedly installed. On the top of the agricultural greenhouse, the inverter is electrically connected to the photovoltaic power generation module, the energy storage module is electrically connected to the inverter, the ventilation module and sprinkler irrigation module are electrically connected to the energy storage module, and the detection module is electrically connected to the ventilation module and sprinkler irrigation module. sexual connection;

Photovoltaic power generation modules are used to collect solar energy and convert solar energy into direct current;

The inverter is used to convert DC power into AC power, output power to the energy storage module, and convert the power of the energy storage module into AC power for use by the load within a predetermined time period;

The energy storage module is used to store electrical energy while outputting electrical energy to the load;

The detection module is used to detect the temperature and soil moisture inside the agricultural greenhouse. When it detects that the temperature inside the agricultural greenhouse is too high and the soil moisture is low, it transmits the signal to the ventilation module and sprinkler irrigation module to make them work;

The ventilation module is used to receive signals of excessive temperature inside the agricultural greenhouse and cool down the interior of the agricultural greenhouse;

The sprinkler irrigation module is used to receive signals of low soil moisture inside the agricultural greenhouse and perform sprinkler irrigation on the soil inside the agricultural greenhouse.

In this embodiment, preferably, the photovoltaic power generation module includes a photovoltaic deployment bracket and a solar panel. The solar panel is used to collect solar energy, the photovoltaic deployment bracket is used to install the solar panel, and the photovoltaic deployment bracket is set on the top of the agricultural greenhouse. The unfolding bracket is used to adjust the inclination angle of the solar panel so that the converted electrical power of the solar panel reaches a predetermined power.

In this embodiment, preferably, the energy storage module includes a photovoltaic battery pack. The photovoltaic battery pack is used to store electrical energy. The photovoltaic battery pack is composed of multiple photovoltaic cell nodes connected in series and parallel to each other to obtain real-time current information. The photovoltaic battery pack The supply current of the group is calculated as follows:

Among them, I ₁ and I ₀ are the photogenerated current and the reverse saturation current respectively; q is the basic charge; U is the photovoltaic cell output voltage; T is the temperature; A is the junction characteristic factor; k is Boltzmann's constant; B is the weight Factor; R ₀ is the starting resistance to ensure the safety of the circuit; R ₁ is the line resistance; R _{i, j} is the diode resistance combination matrix in the photovoltaic circuit, where i and j respectively represent the row and column numbers of the diode resistance in the circuit, n, m respectively represent the maximum value of the row and column numbers of the diode resistance in the circuit.

In this embodiment, preferably, the detection module includes a temperature sensing component and a humidity sensing component. The temperature sensing component and the humidity sensing component are both arranged inside the agricultural greenhouse. The temperature sensing component includes a temperature sensor. The temperature sensing component is For detecting the temperature inside the agricultural greenhouse, the humidity sensing component includes a humidity sensor, and the humidity sensor is used to detect the soil moisture inside the agricultural greenhouse.

In this embodiment, preferably, the ventilation module includes an exhaust fan and an indoor heater. The exhaust fan is used to ventilate the agricultural greenhouse and reduce the temperature inside the agricultural greenhouse when the temperature inside the agricultural greenhouse is too high. The indoor heater is used to ventilate the agricultural greenhouse and reduce the temperature inside the agricultural greenhouse. When the internal temperature is too low, the agricultural greenhouse is heated to increase the temperature inside the agricultural greenhouse.

In this embodiment, preferably, the working steps of the ventilation module include: when the temperature sensing component detects that the temperature in the agricultural greenhouse is high, the signal is transmitted to the exhaust fan, and power is supplied to the exhaust fan through the energy storage module to control the agricultural greenhouse. Ventilation processing reduces the temperature inside the agricultural greenhouse; when the temperature sensing component detects that the temperature in the agricultural greenhouse is low, it transmits the signal to the indoor heater, and supplies power to the indoor heater through the energy storage module to heat the agricultural greenhouse. treatment to increase the temperature inside the agricultural greenhouse.

In this embodiment, preferably, the sprinkler irrigation module includes a water pump, a water supply device, a dosing device, a spray pipe and a sprinkler head. The water supply device and the dosing device are connected to the sprinkler head through a water pump and a sprinkler pipe. The sprinkler head is arranged in the agricultural greenhouse. The water supply device is used for water supply and sprinkler irrigation when the soil moisture inside the agricultural greenhouse is low, and the dosing device is used for spraying crops in the agricultural greenhouse.

In this embodiment, preferably, the working steps of the sprinkler irrigation module include: when the humidity sensing component detects that the soil humidity in the agricultural greenhouse is low, the signal is transmitted to the water pump, so that the water pump draws water from the water supply device and passes it through the sprinkler pipe. and sprinkler heads for sprinkler irrigation.

In this embodiment, preferably, the agricultural photovoltaic power generation system also includes a meteorological observation module. The meteorological observation module is used to observe weather conditions and set preventive measures to prevent natural disasters in a timely manner; the weather conditions can be observed through the meteorological observation module. , preventive measures can be set up after observation, so that natural disasters can be prevented in time.

In this embodiment, preferably, in order to facilitate network communication connections between various modules in the system and enable normal signal transmission, the agricultural photovoltaic power generation system also includes a wireless communication module. The wireless communication module is a Bluetooth module, a WIFI module, a GSM module, GPRS module, CDMA module, CDMA2000 module, WCDMA module, TD-SCDMA module, Zigbee module or LoRa module.

Principles and advantages of the present invention:

By arranging photovoltaic power generation modules, inverters and energy storage modules, the present invention can collect solar energy and convert the solar energy into electric energy. At the same time, it can complete the DC and AC conversion of electric energy, complete the storage and output of electric energy, and use electric energy in agricultural production. On the other hand, it not only increases the utilization rate of solar energy, but also reduces the power consumption problems in agriculture and saves resources; by connecting the detection module, ventilation module and sprinkler module with the energy storage module, the converted electric energy can be output to the detection module, ventilation module and sprinkler irrigation module, which supplies power to the detection module, ventilation module and sprinkler irrigation module, thereby providing convenience for agricultural electricity use. In addition, the temperature and soil moisture inside the agricultural greenhouse are detected through the detection module set up. Together with the ventilation module and sprinkler irrigation module, it can The temperature inside the agricultural greenhouse is adjusted and the soil moisture inside the agricultural greenhouse is adjusted, which is beneficial to agricultural production.

Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, and substitutions can be made to these embodiments without departing from the principles and spirit of the invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (10)

1. An agricultural photovoltaic power generation system, characterized by: including an agricultural greenhouse, a photovoltaic power generation module, an inverter, an energy storage module, a detection module, a ventilation module and a sprinkler irrigation module. The photovoltaic power generation module is fixedly installed in the agricultural greenhouse. The top of the inverter is electrically connected to the photovoltaic power generation module, the energy storage module is electrically connected to the inverter, the ventilation module and the sprinkler irrigation module are electrically connected to the energy storage module. Connection, the detection module is electrically connected to the ventilation module and the sprinkler module; The photovoltaic power generation module is used to collect solar energy and convert solar energy into direct current; The inverter is used to convert the direct current into alternating current, output electric energy to the energy storage module, and convert the electric power of the energy storage module into alternating current for use by the load within a predetermined time period; The energy storage module is used to store electrical energy while outputting electrical energy to the load; The detection module is used to detect the temperature and soil moisture inside the agricultural greenhouse. When detecting that the temperature inside the agricultural greenhouse is too high and the soil moisture is low, the signal is transmitted to the ventilation module and the sprinkler module to make them work; The ventilation module is used to receive a signal that the temperature inside the agricultural greenhouse is too high, and to cool down the inside of the agricultural greenhouse; The sprinkler irrigation module is used to receive a signal that the soil moisture inside the agricultural greenhouse is low, and perform sprinkler irrigation processing on the soil inside the agricultural greenhouse. 2. An agricultural photovoltaic power generation system according to claim 1, characterized in that: the photovoltaic power generation module includes a photovoltaic deployment bracket and a solar panel, the solar panel is used to collect solar energy, and the photovoltaic deployment bracket is used to collect solar energy. When the solar panel is installed, and the photovoltaic deployment bracket is installed on the top of the agricultural greenhouse, the photovoltaic deployment bracket is used to adjust the inclination angle of the solar panel so that the converted electrical energy power of the solar panel reaches Scheduled power. 3. An agricultural photovoltaic power generation system according to claim 1, characterized in that: the energy storage module includes a photovoltaic battery pack, the photovoltaic battery pack is used to store electrical energy, and the photovoltaic battery pack is composed of a plurality of photovoltaic cells. The battery nodes are connected in series and parallel to each other to obtain real-time current information. The power supply current of the photovoltaic battery pack is calculated as follows: Among them, I ₁ and I ₀ are the photogenerated current and the reverse saturation current respectively; q is the basic charge; U is the photovoltaic cell output voltage; T is the temperature; A is the junction characteristic factor; k is Boltzmann's constant; B is the weight Factor; R ₀ is the starting resistance to ensure the safety of the circuit; R ₁ is the line resistance; R _{i, j} is the diode resistance combination matrix in the photovoltaic circuit, where i and j respectively represent the row and column numbers of the diode resistance in the circuit, n, m respectively represent the maximum value of the row and column numbers of the diode resistance in the circuit. 4. An agricultural photovoltaic power generation system according to claim 1, characterized in that: the detection module includes a temperature sensing component and a humidity sensing component, and both the temperature sensing component and the humidity sensing component are configured Inside the agricultural greenhouse, the temperature sensing component includes a temperature sensor. The temperature sensing component is used to detect the temperature inside the agricultural greenhouse. The humidity sensing component includes a humidity sensor. The humidity sensor Used to detect soil moisture inside the agricultural greenhouse. 5. An agricultural photovoltaic power generation system according to claim 4, characterized in that: the ventilation module includes an exhaust fan and an indoor heater, and the exhaust fan is used to cool down the agricultural greenhouse when the internal temperature is too high. The agricultural greenhouse is ventilated to reduce the temperature inside the agricultural greenhouse. The indoor heater is used to heat the agricultural greenhouse and increase the temperature inside the agricultural greenhouse when the temperature inside the agricultural greenhouse is too low. 6. An agricultural photovoltaic power generation system according to claim 5, characterized in that: the working steps of the ventilation module include: when the temperature sensing component detects that the temperature in the agricultural greenhouse is relatively high, The signal is transmitted to the exhaust fan, and power is supplied to the exhaust fan through the energy storage module to ventilate the agricultural greenhouse and reduce the temperature inside the agricultural greenhouse; when the temperature sensing component detects that the agricultural greenhouse When the temperature in the greenhouse is low, the signal is transmitted to the indoor heater, and power is supplied to the indoor heater through the energy storage module to heat the agricultural greenhouse and increase the temperature inside the agricultural greenhouse. . 7. An agricultural photovoltaic power generation system according to claim 4, characterized in that: the sprinkler irrigation module includes a water pump, a water supply device, a dosing device, a sprinkler pipe and a sprinkler head, and the water supply device and the dosing device Both are connected to the sprinkler head through the water pump and the sprinkler pipe. The sprinkler head is arranged in the agricultural greenhouse. The water supply device is used to provide water supply and sprinkler irrigation when the soil moisture inside the agricultural greenhouse is low. Treatment, the dosing device is used to spray pesticides on crops in the agricultural greenhouse. 8. An agricultural photovoltaic power generation system according to claim 7, characterized in that: the working steps of the sprinkler irrigation module include: when the humidity sensing component detects that the humidity of the soil in the agricultural greenhouse is low, The signal is transmitted to the water pump, so that the water pump takes water from the water supply device and performs sprinkler irrigation through the sprinkler pipe and sprinkler head. 9. An agricultural photovoltaic power generation system according to claim 1, characterized in that: the agricultural photovoltaic power generation system also includes a meteorological observation module, the meteorological observation module is used to observe weather conditions and set preventive measures in a timely manner. Protect against natural disasters. 10. An agricultural photovoltaic power generation system according to claim 1, characterized in that: the agricultural photovoltaic power generation system further includes a wireless communication module, and the wireless communication module is a Bluetooth module, a WIFI module, a GSM module, a GPRS module, CDMA module, CDMA2000 module, WCDMA module, TD-SCDMA module, Zigbee module or LoRa module.