CN116700365A - Solar tracking control method, device and storage medium - Google Patents

Abstract

The application relates to a solar tracking control method, equipment and a storage medium, belonging to the field of energy tracking, wherein the method comprises the following steps: detecting an east limit angle and a west limit angle, and calculating a maximum angle of rotation of a photovoltaic upright post of the photovoltaic steering device based on the east limit angle and the west limit angle; determining a mechanical origin of the photovoltaic steering gear based on the maximum angle; acquiring current time and current date in real time according to a clock system built in the photovoltaic steering gear; calculating a first solar azimuth based on a preset astronomical algorithm, the current date and the current time, and tracking the track of the sun through the first solar azimuth; acquiring sunset time; judging whether the current time is equal to or later than the sunset time; and if so, controlling the photovoltaic steering gear to rotate to the mechanical origin, and controlling the photovoltaic steering gear to stop rotating. The application has the effect of effectively reducing the probability of wasting solar energy resources.

Description

Solar tracking control method, device and storage medium

Technical Field

The present application relates to the field of energy tracking, and in particular, to a solar tracking control method, apparatus, and storage medium.

Background

Photovoltaic diverters, also known as solar panel diverters, are used to convert direct current electrical energy into alternating current electrical energy and input it into the grid. Photovoltaic diverters are typically used with photovoltaic panels to convert solar energy into electrical energy and return it to a grid, which can automatically regulate output power under different lighting conditions and provide protective measures such as overload and extreme temperature protection to ensure safe and efficient power output.

In the prior art, the photovoltaic steering gear can track the sun through the sun tracking control system, and the power generation efficiency of the photovoltaic panel can be improved to the greatest extent by tracking the sun, so that more solar energy is obtained. When the photovoltaic steering gear tracks the sun to sunset, the photovoltaic steering gear stays in the sunset direction, however, the sun rises in the opposite direction on the next day, and the photovoltaic steering gear stays in the sunset direction of the sun at the moment, so that the applicant believes that the photovoltaic steering gear cannot capture sunlight in time on the next day when the sun rises, and the waste of solar energy resources is caused.

Disclosure of Invention

In order to effectively reduce the probability of solar energy resource waste, the application provides a solar energy tracking control method, solar energy tracking control equipment and a storage medium.

In a first aspect, the present application provides a solar tracking control method, which adopts the following technical scheme:

a solar tracking control method comprising:

detecting an east limit angle and a west limit angle, and calculating a maximum angle of rotation of a photovoltaic upright post of the photovoltaic steering device based on the east limit angle and the west limit angle;

determining a mechanical origin of the photovoltaic steering gear based on the maximum angle;

acquiring current time and current date in real time according to a clock system built in the photovoltaic steering gear;

calculating a first solar azimuth based on a preset astronomical algorithm, the current date and the current time, and tracking the track of the sun through the first solar azimuth;

acquiring sunset time;

judging whether the current time is equal to or later than the sunset time;

and if so, controlling the photovoltaic steering gear to rotate to the mechanical origin, and controlling the photovoltaic steering gear to stop rotating.

By adopting the technical scheme, the mechanical origin is determined according to the east limiting angle and the west limiting angle, and when the current time is equal to or later than sunset time, the photovoltaic steering gear is controlled to stop rotating and is controlled to rotate to the mechanical origin, so that when sunset occurs, the photovoltaic steering gear does not stay in the sunset direction but returns to the mechanical origin, sunlight can be captured in time when the sun rises the next day, and the probability that solar energy resources are wasted is effectively reduced.

Optionally, the method further comprises:

if the current time is earlier than the sunset time, calculating a time difference value between the current time and the sunset time;

judging whether the time difference value is smaller than a preset time difference threshold value or not;

and if so, controlling the photovoltaic steering gear to rotate to the mechanical origin, and controlling the photovoltaic steering gear to stop rotating.

By adopting the technical scheme, if the difference value between the current time and the sunset time is smaller than the time difference threshold value, the fact that the sun is about to sunset at the moment is indicated, and less solar energy can be captured at the moment, namely the photovoltaic steering gear is controlled to rotate to a mechanical origin, so that sunlight is captured in time when the sun rises the next day, and the probability that solar energy resources are wasted is effectively reduced.

Optionally, after the current time and the current date are obtained in real time according to the clock system built in the photovoltaic steering gear, the method includes:

acquiring a determined time according to a satellite module arranged in the photovoltaic steering gear, and correcting the current time according to the determined time; acquiring longitude and latitude of a geographic area where the photovoltaic steering gear is located according to the satellite module;

and calculating a second solar azimuth angle according to the longitude and latitude and the determined time every preset first time interval.

By adopting the technical scheme, the current time is corrected so as to determine the accuracy of the time; every first time interval, calculate the second sun azimuth according to longitude and latitude and definite time, the sun azimuth can help the photovoltaic steering gear to adjust the position to ensure that can catch the radiant energy of sun to the maximum extent, thus the photovoltaic steering gear is convenient for tracking the sun position accurately.

Optionally, after calculating the second solar azimuth angle according to the longitude and latitude and the determined time at each preset first time interval, the method includes:

acquiring a normal angle of the photovoltaic steering gear;

calculating a measurement included angle between the photovoltaic steering device and solar rays according to the second solar azimuth angle and the normal angle;

and if the absolute value of the measured included angle is larger than a preset included angle threshold, controlling the photovoltaic steering gear to rotate until the included angle between the photovoltaic steering gear and the solar rays is smaller than or equal to the included angle threshold.

Through adopting above-mentioned technical scheme, acquire at first and measure the contained angle to according to measuring the position of contained angle regulation photovoltaic steering gear, the contained angle of measurement is used for making the position of photovoltaic steering gear carry out automatic adjustment, thereby effectively ensures that photovoltaic steering gear is facing the sun all the time, effectively improves the efficiency of collecting solar energy.

Optionally, after calculating the first solar azimuth based on the preset astronomical algorithm, the current date and the current time, and tracking the track of the sun through the first solar azimuth, the method further includes:

acquiring sunrise time;

calculating a sunrise azimuth based on the sunrise time and the astronomical algorithm;

and if the determined time is earlier than the second time interval preset by the sunrise time, controlling the photovoltaic steering gear to rotate to the sunrise azimuth.

By adopting the technical scheme, if the determined time is earlier than sunrise time and earlier than a second time interval, the photovoltaic steering gear is controlled to rotate to the sunrise azimuth angle, so that sunlight is captured in time when the sun rises the next day, and the probability of wasting solar energy resources is effectively reduced.

Optionally, after calculating the first solar azimuth based on the preset astronomical algorithm, the current date and the current time, and tracking the track of the sun through the first solar azimuth, the method further includes:

acquiring current wind speed data according to a meteorological sensor;

if the current wind speed data is larger than a preset wind speed threshold value, judging that the current weather is strong wind weather, and controlling the photovoltaic steering gear to rotate to a wind-avoiding angle;

and controlling the photovoltaic steering gear to stop rotating.

Through adopting above-mentioned technical scheme, obtain wind speed data at first to whether the weather is the strong wind weather according to wind speed data determination at present, and control photovoltaic steering gear rotates to the angle of keeping away wind and stop rotating when the strong wind weather, thereby effectively reduce the probability that photovoltaic steering gear damaged in the strong wind weather.

Optionally, after the controlling the photovoltaic steering gear to stop rotating, the method includes:

acquiring wind speed data in real time based on the meteorological sensor;

and when the wind speed data is smaller than or equal to the wind speed threshold value, sending a starting instruction to enable the photovoltaic steering gear to continuously track the track of the sun.

By adopting the technical scheme, when the wind speed data is smaller than or equal to the wind speed threshold value, a starting instruction is sent to enable the photovoltaic steering gear to continuously track the solar track, so that the photovoltaic steering gear can work in time to capture solar energy resources when the windy weather is over.

Optionally, before the sending the start instruction, the method includes:

acquiring a time length of the wind speed data smaller than or equal to the wind speed threshold value;

if the duration is greater than a preset duration threshold, executing the step of sending the starting instruction;

and if the duration is less than or equal to the duration threshold, executing the step of controlling the photovoltaic steering gear to stop rotating.

By adopting the technical scheme, if the time length is greater than the time length threshold value, the weather of strong wind is indicated to be over, and then the photovoltaic steering gear can be started to work; if the duration is less than or equal to the duration threshold, the fact that the windy weather is not finished is indicated, and the photovoltaic steering gear is continuously controlled to stop rotating at the moment, so that the probability of damage of the photovoltaic steering gear in windy weather is reduced.

In a second aspect, the present application provides a solar tracking control device, which adopts the following technical scheme:

a solar tracking control device comprises a controller, a communication module, a photovoltaic steering gear, an east limit sensor and a west limit sensor; the controller is respectively and electrically connected with the communication module, the photovoltaic steering gear, the east limit sensor and the west limit sensor;

the controller is used for controlling the east limit sensor to detect the east limit angle and controlling the west limit sensor to detect the west limit angle, and calculating the maximum angle of rotation of the photovoltaic upright post of the photovoltaic steering device based on the east limit angle and the west limit angle;

the controller is configured to determine a mechanical origin of the photovoltaic steering gear based on the maximum angle;

the controller is used for acquiring the current time and the current date in real time according to a clock system built in the photovoltaic steering gear;

the controller is used for calculating a first solar azimuth based on a preset astronomical algorithm, the current date and the current time, and tracking the track of the sun through the first solar azimuth;

the controller is used for acquiring sunset time through the communication module and judging whether the current time is equal to or later than the sunset time;

if yes, the controller is used for controlling the photovoltaic steering gear to rotate to the mechanical origin and controlling the photovoltaic steering gear to stop rotating.

Through adopting above-mentioned technical scheme, at first the controller is according to east spacing angle and western spacing angle confirm mechanical origin to when current time equals or is later than sunset time, control photovoltaic steering ware stop rotating, and control photovoltaic steering ware rotates to mechanical origin, thereby when sunset, photovoltaic steering ware is not stopped in the sunset direction, but is got back to mechanical origin, when the sun rises the next day, photovoltaic steering ware can in time catch sunlight, thereby effectively reduce the probability that solar energy resource was wasted.

In a third aspect, the present application provides a computer readable storage medium, which adopts the following technical scheme:

a computer readable storage medium having a computer program stored therein, the computer program when loaded and executed by a processor employing the solar tracking control method described above.

By adopting the technical scheme, the solar tracking control method generates a computer program, and the computer program is stored in a computer readable storage medium to be loaded and executed by a processor, and the computer program is convenient to read and store by the computer readable storage medium.

In summary, the application has at least one of the following beneficial technical effects:

1. firstly, a mechanical origin is determined according to an east limit angle and a west limit angle, when the current time is equal to or later than sunset time, the photovoltaic steering gear is controlled to stop rotating, and the photovoltaic steering gear is controlled to rotate to the mechanical origin, so that the photovoltaic steering gear does not stay in the sunset direction but returns to the mechanical origin when sunset occurs, sunlight can be captured in time when the sun rises the next day, and the probability that solar energy resources are wasted is effectively reduced.

2. Every first time interval, calculate the second sun azimuth according to longitude and latitude and definite time, the sun azimuth can help the photovoltaic steering gear to adjust the position to ensure that can catch the radiant energy of sun to the maximum extent, thus the photovoltaic steering gear is convenient for tracking the sun position accurately.

3. If the determined time is earlier than sunrise time and earlier than the second time interval, the photovoltaic steering gear is controlled to rotate to the sunrise azimuth angle, so that sunlight is captured in time when the sun rises the next day, and the probability that solar energy resources are wasted is effectively reduced.

Drawings

Fig. 1 is a schematic flow chart of one of the solar tracking control methods according to the embodiment of the application.

Fig. 2 is a schematic flow chart of one of the solar tracking control methods according to the embodiment of the application.

Fig. 3 is a schematic flow chart of one of the solar tracking control methods according to the embodiment of the application.

Fig. 4 is a schematic flow chart of one of the solar tracking control methods according to the embodiment of the application.

Fig. 5 is a schematic flow chart of one of the solar tracking control methods according to the embodiment of the application.

Fig. 6 is a schematic flow chart of one of the solar tracking control methods according to the embodiment of the application.

Fig. 7 is a schematic flow chart of one of the solar tracking control methods according to the embodiment of the application.

Fig. 8 is a schematic flow chart of one of the solar tracking control methods according to the embodiment of the application.

Detailed Description

The application is described in further detail below with reference to fig. 1 to 8.

The embodiment of the application discloses a solar tracking control method.

Referring to fig. 1, a solar tracking control method includes the steps of:

s101, detecting an east limit angle and a west limit angle, and calculating the maximum rotation angle of the photovoltaic upright post of the photovoltaic steering device based on the east limit angle and the west limit angle.

In this embodiment, the east limit angle is detected by the east limit sensor, and the west limit angle is detected by the west limit sensor. Specifically, the east limit sensor is a sensor for a solar tracking system and is mainly used for detecting the rotation stop position of the photovoltaic steering gear so as to prevent the photovoltaic steering gear from turning to the east excessively and damaging equipment. Similarly, the west limit sensor is also used for a solar tracking system and is used for detecting the rotation stop position of the photovoltaic steering gear so as to prevent the photovoltaic steering gear from oversteering to the west and damaging equipment.

When the photovoltaic steering gear tracks the rotation of the sun, it needs to be rotated by a drive motor mounted on the photovoltaic steering gear. If the driving motor fails to operate due to mechanical abrasion, electrical faults and the like, the photovoltaic steering gear cannot stop automatic eastward rotation, so that the photovoltaic steering gear possibly collides with the limit position when rotating, and equipment is damaged. The limit sensor is designed to monitor the stroke of the photovoltaic steering gear, when the photovoltaic steering gear rotates to a preset east limit position, the limit sensor sends out a signal, and the control system receives the signal and controls the photovoltaic steering gear to stop rotating, so that equipment can be effectively protected, and the photovoltaic steering gear can continuously track the movement of the sun.

The photovoltaic upright post is a support post for installing the photovoltaic steering gear and is used for supporting and fixing the photovoltaic steering gear, and the main effect of the photovoltaic upright post is to ensure the stability and reliability of installing the photovoltaic steering gear and prevent the photovoltaic steering gear from being damaged in weather. The photovoltaic column has a rotation function for rotating the photovoltaic steering gear in accordance with the sun, which is usually accomplished by a rotation transmission system that can control the rotation of the photovoltaic column by means of an electric motor or hydraulic transmission system.

The method comprises the following steps of calculating the maximum rotation angle of the photovoltaic upright column according to the east limit angle and the west limit angle:

1. and calculating the difference between the east limit angle and the west limit angle of the photovoltaic upright post, namely the rotation angle range.

2. Because the photovoltaic upright post of the photovoltaic steering gear can rotate 360 degrees, the maximum rotatable angle of the photovoltaic upright post of the photovoltaic steering gear can be obtained by dividing the rotation angle range by 2.

For example, if the east limit angle of the photovoltaic pillar is 60 degrees and the west limit angle is-60 degrees, the rotation angle range thereof is 120 degrees and the maximum rotatable angle is 60 degrees.

S102, determining the mechanical origin of the photovoltaic steering gear based on the maximum angle.

In this embodiment, the positive south is taken as 0 degrees, the south is a negative angle, the south is a positive angle, the maximum angle divided by 2 is taken as the mechanical origin, and the mechanical origin is 0 degrees, namely the positive south.

S103, acquiring the current time and the current date in real time according to a clock system built in the photovoltaic steering gear.

The perpetual calendar clock system and the instant clock system which are arranged in the photovoltaic steering gear are used for acquiring the current time, and besides, the perpetual calendar clock system can also record the current date, geographical position and other information.

S104, calculating a first solar azimuth based on a preset astronomical algorithm, the current date and the current time, and tracking the track of the sun through the first solar azimuth.

The azimuth angle of the sun is the azimuth angle of the sun, which is generally defined as the angle measured clockwise along the horizon from north. The specific azimuth angle is the direction taking the north direction of the target object as the starting direction, namely 0 degree. The specific calculation mode of the azimuth angle is that the value range is 0-360 degrees: the target is taken as an axis, the north direction of the target is taken as a starting point, the target rotates for one circle clockwise, and the azimuth angle is gradually increased to 360 degrees. The azimuth angle of the sun is therefore usually measured in a clockwise direction with the north of the target as the starting direction and the direction of incidence of the sun as the ending direction. Typically, the azimuth angle of the sun in the morning is positive and the azimuth angle of the sun in the afternoon is negative.

If the solar azimuth angle is required to be calculated, firstly, calculating the solar altitude angle, wherein the formula of the solar altitude angle is as follows:

sinH _s ＝sinφ×sinδ+cosφ×cosδ×cost；

wherein H is _s The solar altitude angle is delta, solar declination, phi, geographical latitude and t, and the time angle.

The formula shows that the geographical latitude can be obtained based on a perpetual calendar clock system, and the solar declination and the time angle also need to be calculated.

The declination of the sun is equal to the angle between the incident light of the sun and the equator of the earth, and the declination of the sun is periodically changed according to seasons, namely one year, because the angle between the rotation axis of the earth and the revolution plane is basically unchanged. The solar time angle refers to the time angle in the center of the sun plane, namely the angular distance from the observation point celestial sphere meridian along the solar equator to the time circle where the sun is located.

The calculation formula of the solar azimuth angle is as follows:

wherein A is _s Is the solar azimuth angle.

The calculation formula of solar declination is as follows:

δ(deg)＝0.006918-0.399912cos(b)+0.070257sin(b)-0.006758cos(2b)+0.000907sin(2b)-0.002697cos(3b)+0.00148sin(3b)；

where b=2×pi× (N-1)/365, N is 1 month and 1 day a year, and the number of days from the current date. I.e. 1 month 1 day, n=1, 1 month 2 days, n=2, and so on. PI is the circumference ratio and deg represents the angle degree.

The calculation formula of the time angle is as follows:

t= (true solar time-12) ×15°;

wherein true solar time = flat solar time + true solar time difference. The time difference of the real solar time can be obtained through a time difference database, and the time difference database stores the current geographic position and the corresponding time difference of the real solar time.

S105, acquiring sunset time.

The sunset time is obtained by a perpetual calendar clock system.

S106, judging whether the current time is equal to or later than sunset time.

If the current time is equal to or later than sunset time, the current sunset is indicated, and solar energy resources cannot be collected.

And S107, if yes, controlling the photovoltaic steering gear to rotate to a mechanical origin, and controlling the photovoltaic steering gear to stop rotating.

And if the current time is equal to or later than sunset time, controlling the photovoltaic steering gear to rotate to the mechanical origin, and stopping rotating. For example, if the sunset time is 17:00, the current time is 17:02, and the current time is later than the sunset time, the photovoltaic steering is controlled to rotate to the mechanical origin and stops rotating.

The implementation principle of the embodiment is as follows: firstly, a mechanical origin is determined according to an east limit angle and a west limit angle, when the current time is equal to or later than sunset time, the photovoltaic steering gear is controlled to stop rotating, and the photovoltaic steering gear is controlled to rotate to the mechanical origin, so that the photovoltaic steering gear does not stay in the sunset direction but returns to the mechanical origin when sunset occurs, sunlight can be captured in time when the sun rises the next day, and the probability that solar energy resources are wasted is effectively reduced.

A detailed description will be given by way of fig. 2 based on one of the implementations of the embodiment shown in fig. 1.

Referring to fig. 2, a solar tracking control method further includes the steps of:

s201, if the current time is earlier than the sunset time, calculating a time difference value between the current time and the sunset time.

If the sunset time is 17:00 and the current time is 16:00, the difference between the current time and the sunset time is 1 hour.

S202, judging whether the time difference value is smaller than a preset time difference threshold value.

In this embodiment, the time difference threshold is 0.5h, and if the time difference is smaller than the time difference threshold, it indicates that the sun is about to sunset at this time, and the available solar energy resources are very small.

And S203, if yes, controlling the photovoltaic steering gear to rotate to a mechanical origin, and controlling the photovoltaic steering gear to stop rotating.

And if the time difference value is smaller than the time difference threshold value, controlling the photovoltaic steering gear to rotate to the mechanical origin, and controlling the photovoltaic steering gear to stop rotating.

If the time difference is greater than or equal to the time difference threshold, no action is taken.

According to the solar tracking control method provided by the embodiment, if the difference value between the current time and the sunset time is smaller than the time difference threshold value, the fact that the sun is about to sunset at the moment is indicated, and at the moment, less solar energy can be captured, namely the photovoltaic steering gear is controlled to rotate to a mechanical origin, so that sunlight can be captured in time when the sun rises the next day, and the probability that solar energy resources are wasted is effectively reduced.

A detailed description will be given by way of fig. 3 based on one of the implementations of the embodiment shown in fig. 1.

Referring to fig. 3, after acquiring the current time and the current date in real time according to a clock system built in the photovoltaic redirector, the method comprises the following steps:

s301, acquiring the determined time according to a satellite module arranged in the photovoltaic steering gear, and correcting the current time according to the determined time.

The satellite module obtains a current time and a current date using the GPS satellite signal. In practical application, the photovoltaic steering gear can acquire the current time, the current longitude and latitude and the current date by using GPS signals, and calculate related information such as sunrise time and sunset time according to the current longitude and latitude. After the determined time acquired by the satellite module is obtained, the determined time is taken as the current time to correct the current time. In addition, the present embodiment may further correct the current date and the current geographic position acquired by the clock system according to the date and the geographic position acquired by the satellite module.

S302, acquiring longitude and latitude of a geographic area where the photovoltaic steering gear is located according to the satellite module.

The satellite module acquires the longitude and latitude of the geographic area where the photovoltaic steering gear is located by using GPS satellite signals.

S303, calculating a second solar azimuth angle according to the longitude and latitude and the determined time every preset first time interval.

The first time interval is in the time interval greater than 5 seconds and less than or equal to 5 minutes in this embodiment, and the same as step S104, the second solar azimuth angle can be calculated according to the longitude and latitude and the determined time, and the solar altitude angle, the solar declination angle and the time angle can be calculated in sequence to obtain the second solar azimuth angle.

The solar tracking control method provided by the embodiment corrects the current time so as to determine the accuracy of the time; every first time interval, calculate the second sun azimuth according to longitude and latitude and definite time, the sun azimuth can help the photovoltaic steering gear to adjust the position to ensure that can catch the radiant energy of sun to the maximum extent, thus the photovoltaic steering gear is convenient for tracking the sun position accurately.

A detailed description will be given by way of fig. 4 based on one of the implementations of the embodiment shown in fig. 1.

Referring to fig. 4, after calculating a second solar azimuth angle according to longitude and latitude and a determined time every preset first time interval, the method comprises the following steps:

s401, acquiring a normal angle of the photovoltaic steering gear.

The normal angle of a photovoltaic deflector refers to the angle perpendicular to the plane of the photovoltaic deflector when light is incident on the surface of the photovoltaic deflector. For a horizontally mounted photovoltaic panel, the normal angle is 0 degrees, and for a vertically mounted photovoltaic panel, the normal angle is 90 degrees.

S402, calculating a measurement included angle between the photovoltaic steering device and solar rays according to the second solar azimuth angle and the normal angle.

The measured angle of the photovoltaic diverter to the solar rays is used to represent the angle of incidence of the solar rays. Specifically, in the first embodiment, the measurement angle can be measured and recorded by a person by using an inclinometer; in the second embodiment, the measured angle may be calculated, that is, the installation position and orientation of the photovoltaic steering gear need to be determined first, then the formula of the solar altitude and azimuth angle is used to calculate the incident angle of the light ray when the light ray enters the photovoltaic panel, and the finally obtained angle is the measured angle. The calculation formula is as follows:

β＝arccos(sin(H _s )×sin(θt)+cos(H _s )×cos(θt)×cos(A _s -θp))；

wherein H is _s For the solar altitude, A _s The solar azimuth angle, beta is the incident angle, thetat is the inclination angle of the photovoltaic steering gear, and thetap is the azimuth angle of the photovoltaic steering gear. Square of photovoltaic steering gearThe azimuth is the direction angle of the photovoltaic steering gear perpendicular to the ground normal. The direction of the ground normal is perpendicular to the ground and is the normal vector of the ground.

And S403, if the absolute value of the measured included angle is larger than a preset included angle threshold value, controlling the photovoltaic steering gear to rotate until the included angle between the photovoltaic steering gear and the solar rays is smaller than or equal to the included angle threshold value.

If the absolute value of the measured included angle is larger than the included angle threshold, the fact that the incident angle of sunlight does not enable the efficiency of the photovoltaic steering gear for collecting solar energy resources to be optimal is indicated, and the photovoltaic steering gear is controlled to rotate until the included angle between the photovoltaic steering gear and solar rays is smaller than or equal to the included angle threshold.

According to the solar tracking control method provided by the embodiment, the measurement included angle is firstly obtained, the position of the photovoltaic steering gear is adjusted according to the measurement included angle, the measurement included angle is used for enabling the position of the photovoltaic steering gear to be automatically adjusted, and therefore the photovoltaic steering gear is effectively ensured to always face the sun, and the efficiency of collecting solar energy is effectively improved.

A detailed description will be given by way of fig. 5 based on one of the implementations of the embodiment shown in fig. 1.

Referring to fig. 5, after calculating a first solar azimuth based on a preset astronomical algorithm, a current date and a current time and tracking a track of the sun through the first solar azimuth, the method further comprises the steps of:

s501, acquiring sunrise time.

Sunrise time can be acquired based on a clock system or based on a satellite module.

S502, calculating the sunrise azimuth based on the sunrise time and astronomical algorithm.

And the same principle as in the step S104, the second solar azimuth angle can be calculated according to the longitude and latitude and the sunrise time, and the solar altitude angle, the solar declination angle and the time angle can be calculated in sequence to obtain the sunrise azimuth angle.

And S503, if the determined time is earlier than a second time interval preset by sunrise time, controlling the photovoltaic steering gear to rotate to the sunrise azimuth.

In this embodiment, the second time interval is 1 hour, i.e. if the sunrise time is 8:00, and the determined time is 7:00, the photovoltaic steering gear is controlled to rotate to the sunrise azimuth.

According to the solar tracking control method provided by the embodiment, if the determined time is earlier than sunrise time and earlier than a second time interval, the photovoltaic steering gear is controlled to rotate to the sunrise azimuth angle, so that sunlight can be captured in time when the sun rises the next day, and the probability of wasting solar energy resources is effectively reduced.

A detailed description will be given by way of fig. 6 based on one of the implementations of the embodiment shown in fig. 1.

Referring to fig. 6, after calculating a first solar azimuth based on a preset astronomical algorithm, a current date and a current time and tracking a track of the sun through the first solar azimuth, the method further comprises the steps of:

s601, acquiring current wind speed data according to a meteorological sensor.

The meteorological sensor refers to a wind speed and direction sensor, and current wind speed data can be obtained according to the wind speed and direction sensor.

S602, if the current wind speed data is larger than a preset wind speed threshold value, judging that the current weather is strong wind weather, and controlling the photovoltaic steering gear to rotate to a wind-avoiding angle.

If the current wind speed data is larger than the wind speed threshold value, the current weather is the windy weather, and the photovoltaic steering gear is easy to damage in the windy weather, so that the photovoltaic steering gear is controlled to rotate to a wind-avoiding angle. Specifically, the wind-shielding angle of the photovoltaic steering gear refers to an angle adjustment measure adopted for preventing the photovoltaic steering gear from being affected by high winds in strong wind weather. The wind-shielding angle is dependent on the specific photovoltaic diverter model and installation location, and is typically between 15 degrees and 20 degrees.

And S603, controlling the photovoltaic steering gear to stop rotating.

And after the photovoltaic steering gear is controlled to rotate to the wind-avoiding angle, the photovoltaic steering gear is controlled to stop rotating, so that the probability of damage of the photovoltaic steering gear in windy weather is reduced.

According to the solar tracking control method provided by the embodiment, wind speed data are firstly obtained, whether the current weather is the strong wind weather is determined according to the wind speed data, and the photovoltaic steering gear is controlled to rotate to a wind-shielding angle and stops rotating in the strong wind weather, so that the probability of damage of the photovoltaic steering gear in the strong wind weather is effectively reduced.

A detailed description will be given by way of fig. 7 based on one of the implementations of the embodiment shown in fig. 1.

Referring to fig. 7, after controlling the photovoltaic steering gear to stop rotating, the method comprises the steps of:

s701, acquiring wind speed data in real time based on a meteorological sensor.

The meteorological sensor refers to a wind speed and direction sensor, and wind speed data can be obtained in real time according to the wind speed and direction sensor.

S702, when the wind speed data is smaller than or equal to a wind speed threshold value, a starting instruction is sent, so that the photovoltaic steering gear continues to track the track of the sun.

When the wind speed data is smaller than or equal to the wind speed threshold value, indicating that the current weather is not strong wind weather, sending a starting instruction at the moment, and enabling the photovoltaic steering device to continuously track the solar track after receiving the starting instruction.

According to the solar tracking control method provided by the embodiment, when the wind speed data is smaller than or equal to the wind speed threshold value, a starting instruction is sent to enable the photovoltaic steering gear to continuously track the solar track, so that the photovoltaic steering gear can work in time when the windy weather is over, and solar energy resources are captured.

A detailed description will be given by way of fig. 8 based on one of the implementations of the embodiment shown in fig. 1.

Referring to fig. 8, before transmitting a start instruction, the method includes the steps of:

s801, acquiring a time length when the wind speed data is less than or equal to a wind speed threshold value.

The duration of the wind speed data being less than or equal to the wind speed threshold value refers to the duration of the wind speed data being less than or equal to the wind speed threshold value, and if the duration of the wind speed data being less than or equal to the wind speed threshold value is 10 minutes, the duration is 10 minutes.

S802, executing a step of sending a starting instruction if the time length is greater than a preset time length threshold value.

And if the time length is greater than the time length threshold value, indicating that the current weather is not strong wind weather, executing the step of sending the starting instruction.

And S803, if the duration is less than or equal to the duration threshold value, executing the step of controlling the photovoltaic steering gear to stop rotating.

And if the duration is less than or equal to the duration threshold value, indicating that the current weather is still strong wind weather, executing the step of controlling the photovoltaic steering gear to stop rotating.

According to the solar tracking control method provided by the embodiment, if the time length is greater than the time length threshold value, the weather of strong wind is indicated to be over, and then the photovoltaic steering gear can be started to work; if the duration is less than or equal to the duration threshold, the fact that the windy weather is not finished is indicated, and the photovoltaic steering gear is continuously controlled to stop rotating at the moment, so that the probability of damage of the photovoltaic steering gear in windy weather is reduced.

The embodiment of the application also discloses solar tracking control equipment.

The solar tracking control device comprises a controller, a communication module, a photovoltaic steering gear, an east limit sensor and a west limit sensor; the controller is respectively connected with the communication module, the photovoltaic steering gear, the east limit sensor and the west limit sensor through wires; specifically, the communication module is a LORA communication module, a WIFI module, a Bluetooth module and the like. The controller is electrically connected with the east limit sensor and the west limit sensor through the motor control logic main board, namely, the controller is connected with the motor control logic main board through an I/O port, and the motor control logic main board is respectively connected with the east limit sensor and the west limit sensor through wires.

In addition, the controller is also electrically connected with a GPS Beidou module, and the GPS Beidou module is connected with the controller through a serial port.

The solar tracking control equipment further comprises a power supply system, an industrial personal computer and a deceleration direct current motor, wherein the power supply system is connected with the controller through wires, the industrial personal computer can be connected with the controller through wires or can be connected with the controller in a wireless mode, and the deceleration direct current motor is connected with the deceleration direct current motor through wires. Specifically, the industrial personal computer of the photovoltaic steering gear, also called as a PLC (programmable logic controller), is a computer control system specially used for automatic control. The photovoltaic power generation system is used for controlling the operation of the photovoltaic steering gear, monitoring the working state of the power supply system, collecting operation data, providing fault diagnosis and other functions.

The PLC may be connected to the controller of the photovoltaic diverter by various communication means, such as ethernet, serial, MODBUS, etc. It can receive and analyze data from the sensor and controller, execute instructions, and upload data to the host computer.

The deceleration direct current motor is generally used for converting direct current into stable low-speed direct current so as to convey the direct current into a frequency converter for further processing, so that the matching between the output of electric energy and an electric load is more accurate, and the efficiency and the stability of the photovoltaic steering gear are improved.

The industrial personal computer is electrically connected with a wind speed and direction sensor, a LORA communication high-power module and the like respectively, namely the wind speed and direction sensor and the LORA communication high-power module are connected with the industrial personal computer through wires respectively.

The controller is used for controlling the east limit sensor to detect the east limit angle and controlling the west limit sensor to detect the west limit angle, and calculating the maximum angle of rotation of the photovoltaic upright post of the photovoltaic steering device based on the east limit angle and the west limit angle;

the controller is used for determining the mechanical origin of the photovoltaic steering gear based on the maximum angle;

the controller is used for acquiring the current time and the current date in real time according to a clock system arranged in the photovoltaic steering gear;

the controller is used for calculating a first solar azimuth based on a preset astronomical algorithm, a current date and a current time, and tracking the track of the sun through the first solar azimuth;

the controller is used for acquiring sunset time through the communication module and judging whether the current time is equal to or later than the sunset time;

if yes, the controller is used for controlling the photovoltaic steering gear to rotate to a mechanical origin and controlling the photovoltaic steering gear to stop rotating.

The implementation principle of the solar tracking control equipment provided by the embodiment of the application is as follows: the controller firstly determines a mechanical origin according to the east limit angle and the west limit angle, and when the current time is equal to or later than sunset time, the photovoltaic steering gear is controlled to stop rotating, and the photovoltaic steering gear is controlled to rotate to the mechanical origin, so that when sunset occurs, the photovoltaic steering gear does not stay in the sunset direction but returns to the mechanical origin, and when the sun rises the next day, the photovoltaic steering gear can capture sunlight in time, and the probability that solar energy resources are wasted is effectively reduced.

The embodiment of the application also discloses a computer readable storage medium, and the computer readable storage medium stores a computer program, wherein the solar tracking control method in the embodiment is adopted when the computer program is executed by a processor.

The computer program may be stored in a computer readable medium, where the computer program includes computer program code, where the computer program code may be in a source code form, an object code form, an executable file form, or some middleware form, etc., and the computer readable medium includes any entity or device capable of carrying the computer program code, a recording medium, a usb disk, a removable hard disk, a magnetic disk, an optical disk, a computer memory, a read-only memory (ROM), a Random Access Memory (RAM), an electrical carrier signal, a telecommunication signal, a software distribution medium, etc., where the computer readable medium includes, but is not limited to, the above components.

The solar tracking control method in the above embodiment is stored in the computer readable storage medium through the computer readable storage medium, and is loaded and executed on a processor, so as to facilitate the storage and application of the method.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (10)

1. The solar tracking control method based on the photovoltaic steering gear is characterized by comprising the following steps of:

detecting an east limit angle and a west limit angle, and calculating a maximum angle of rotation of a photovoltaic upright post of the photovoltaic steering device based on the east limit angle and the west limit angle;

determining a mechanical origin of the photovoltaic steering gear based on the maximum angle;

acquiring current time and current date in real time according to a clock system built in the photovoltaic steering gear;

calculating a first solar azimuth based on a preset astronomical algorithm, the current date and the current time, and tracking the track of the sun through the first solar azimuth;

acquiring sunset time;

judging whether the current time is equal to or later than the sunset time;

and if so, controlling the photovoltaic steering gear to rotate to the mechanical origin, and controlling the photovoltaic steering gear to stop rotating.

2. The solar tracking control method of claim 1, further comprising:

if the current time is earlier than the sunset time, calculating a time difference value between the current time and the sunset time;

judging whether the time difference value is smaller than a preset time difference threshold value or not;

and if so, controlling the photovoltaic steering gear to rotate to the mechanical origin, and controlling the photovoltaic steering gear to stop rotating.

3. The solar tracking control method according to claim 1, wherein after the current time and the current date are obtained in real time according to the clock system built in the photovoltaic steering gear, comprising:

acquiring a determined time according to a satellite module arranged in the photovoltaic steering gear, and correcting the current time according to the determined time;

acquiring longitude and latitude of a geographic area where the photovoltaic steering gear is located according to the satellite module;

and calculating a second solar azimuth angle according to the longitude and latitude and the determined time every preset first time interval.

4. A solar tracking control method according to claim 3, wherein after calculating a second solar azimuth angle from the longitude and latitude and the determined time at each preset first time interval, comprising:

acquiring a normal angle of the photovoltaic steering gear;

calculating a measurement included angle between the photovoltaic steering device and solar rays according to the second solar azimuth angle and the normal angle;

and if the absolute value of the measured included angle is larger than a preset included angle threshold, controlling the photovoltaic steering gear to rotate until the included angle between the photovoltaic steering gear and the solar rays is smaller than or equal to the included angle threshold.

5. A solar tracking control method according to claim 3, further comprising, after said calculating a first solar azimuth based on a preset astronomical algorithm, said current date and said current time, and tracking a trajectory of the sun through said first solar azimuth:

acquiring sunrise time;

calculating a sunrise azimuth based on the sunrise time and the astronomical algorithm;

and if the determined time is earlier than the second time interval preset by the sunrise time, controlling the photovoltaic steering gear to rotate to the sunrise azimuth.

6. The solar tracking control method according to claim 1, further comprising, after the calculating a first solar azimuth based on a preset astronomical algorithm, the current date and the current time, and tracking a track of the sun through the first solar azimuth:

acquiring current wind speed data according to a meteorological sensor;

if the current wind speed data is larger than a preset wind speed threshold value, judging that the current weather is strong wind weather, and controlling the photovoltaic steering gear to rotate to a wind-avoiding angle;

and controlling the photovoltaic steering gear to stop rotating.

7. The solar tracking control method according to claim 6, characterized by comprising, after the control of stopping rotation of the photovoltaic steering gear:

acquiring wind speed data in real time based on the meteorological sensor;

and when the wind speed data is smaller than or equal to the wind speed threshold value, sending a starting instruction to enable the photovoltaic steering gear to continuously track the track of the sun.

8. The solar tracking control method according to claim 7, characterized by comprising, before the sending of the start instruction:

acquiring a time length of the wind speed data smaller than or equal to the wind speed threshold value;

if the duration is greater than a preset duration threshold, executing the step of sending the starting instruction;

and if the duration is less than or equal to the duration threshold, executing the step of controlling the photovoltaic steering gear to stop rotating.

9. A solar tracking control device, characterized in that: the intelligent control system comprises a controller, a communication module, a photovoltaic steering gear, an east limit sensor and a west limit sensor; the controller is respectively and electrically connected with the communication module, the photovoltaic steering gear, the east limit sensor and the west limit sensor;

the controller is used for controlling the east limit sensor to detect the east limit angle and controlling the west limit sensor to detect the west limit angle, and calculating the maximum angle of rotation of the photovoltaic upright post of the photovoltaic steering device based on the east limit angle and the west limit angle;

the controller is configured to determine a mechanical origin of the photovoltaic steering gear based on the maximum angle;

the controller is used for acquiring the current time and the current date in real time according to a clock system built in the photovoltaic steering gear;

the controller is used for calculating a first solar azimuth based on a preset astronomical algorithm, the current date and the current time, and tracking the track of the sun through the first solar azimuth;

the controller is used for acquiring sunset time through the communication module and judging whether the current time is equal to or later than the sunset time;

if yes, the controller is used for controlling the photovoltaic steering gear to rotate to the mechanical origin and controlling the photovoltaic steering gear to stop rotating.

10. A computer readable storage medium having a computer program stored therein, characterized in that the method according to any of claims 1 to 8 is employed when the computer program is loaded and executed by a processor.