CN107219862B - Control method of photovoltaic extension system - Google Patents
Control method of photovoltaic extension system Download PDFInfo
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- CN107219862B CN107219862B CN201710267449.8A CN201710267449A CN107219862B CN 107219862 B CN107219862 B CN 107219862B CN 201710267449 A CN201710267449 A CN 201710267449A CN 107219862 B CN107219862 B CN 107219862B
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000008602 contraction Effects 0.000 claims description 11
- 238000010248 power generation Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/12—Control of position or direction using feedback
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Abstract
The invention discloses a control method of a photovoltaic extension system. The control method of the photovoltaic extension system comprises the following steps: acquiring a current telescopic state of the photovoltaic extension system; acquiring the current environment of the photovoltaic extension system; and controlling the stretching state of the photovoltaic extension system according to the current stretching state and the current environment of the photovoltaic extension system. According to the control method of the photovoltaic extension system, automatic control can be performed according to the environment of the photovoltaic extension system, the intelligent degree is high, and the power generation amount of the photovoltaic extension system can be effectively guaranteed.
Description
Technical Field
The invention relates to the technical field of photovoltaics, in particular to a control method of a photovoltaic extension system.
Background
The existing photovoltaic extension system usually uses a control panel or adopts an internal set program to stretch the photovoltaic extension system, when the photovoltaic extension system needs to be unfolded or contracted, a user can only manually control or set fixed time through the program to stretch the photovoltaic extension system, so that the control of the photovoltaic extension system cannot be flexibly adjusted according to the environment where the photovoltaic extension system is located, the automation degree of the photovoltaic extension system is reduced, and the power generation efficiency of the photovoltaic extension system is influenced.
Disclosure of Invention
The embodiment of the invention provides a control method of a photovoltaic extension system, which can automatically control according to the environment of the photovoltaic extension system, has high intelligent degree and can effectively ensure the power generation capacity of the photovoltaic extension system.
In order to achieve the above object, an embodiment of the present invention provides a control method for a photovoltaic extension system, including: acquiring a current telescopic state of the photovoltaic extension system; acquiring the current environment of the photovoltaic extension system; and controlling the stretching state of the photovoltaic extension system according to the current stretching state and the current environment of the photovoltaic extension system.
Preferably, the current environment includes at least one of: solar irradiance, ambient wind speed, and rail deformation.
Preferably, the step of controlling the expansion and contraction state of the photovoltaic expansion system according to the current expansion and contraction state of the photovoltaic expansion system and the current environment comprises: when the photovoltaic extension system is in a retracted state; determining whether the solar irradiance is less than or equal to a for a time t 1; when the solar irradiance is less than or equal to a for a time t1, the photovoltaic extension system is maintained in the contracted state.
Preferably, the step of controlling the stretching state of the photovoltaic stretching system according to the current stretching state and the current environment of the photovoltaic stretching system further includes: when solar irradiance is greater than a, determining whether the ambient wind speed is greater than or equal to b for a time t 2; and when the ambient wind speed is greater than or equal to b and lasts for t2 time, keeping the photovoltaic extension system in a contracted state.
Preferably, the step of controlling the stretching state of the photovoltaic stretching system according to the current stretching state and the current environment of the photovoltaic stretching system further includes: when the ambient wind speed is less than b, determining whether the deformation of the guide rail where the photovoltaic extension system is located is greater than or equal to c and lasts for t3 time; when the deformation of the guide rail where the photovoltaic extension system is located is larger than or equal to c and lasts for t3 time, keeping the photovoltaic extension system in a contraction state and giving an alarm; and when the deformation of the guide rail where the photovoltaic extension system is located is less than c, controlling the photovoltaic extension system to be unfolded and kept.
Preferably, the step of controlling the expansion and contraction state of the photovoltaic expansion system according to the current expansion and contraction state of the photovoltaic expansion system and the current environment comprises: when the photovoltaic extension system is in the unfolded state; determining whether the solar irradiance is less than d for a time t 4; and when the solar irradiance is less than d and lasts for t4 time, controlling the photovoltaic extension system to shrink.
Preferably, the step of controlling the stretching state of the photovoltaic stretching system according to the current stretching state and the current environment of the photovoltaic stretching system further includes: when solar irradiance is greater than or equal to d, determining whether the ambient wind speed is greater than e and lasts for a time t 5; and when the ambient wind speed is greater than e and lasts for t5 time, controlling the photovoltaic extension system to contract.
Preferably, the step of controlling the stretching state of the photovoltaic stretching system according to the current stretching state and the current environment of the photovoltaic stretching system further includes: when the ambient wind speed is less than or equal to e, determining whether the deformation of the guide rail where the photovoltaic extension system is located is greater than f and lasts for t6 time; when the deformation of the guide rail where the photovoltaic extension system is located is larger than f and lasts for t6 time, controlling the photovoltaic extension system to contract; and when the deformation of the guide rail on which the photovoltaic extension system is arranged is less than or equal to f, returning to the step of determining whether the solar irradiance is less than d and lasts for t4 time.
Preferably, after the step of obtaining the current telescopic state of the photovoltaic extension system, the step of obtaining the current environment of the photovoltaic extension system further includes: detecting the motion state of the photovoltaic extension system; and when the photovoltaic extension system is in the motion state, controlling the photovoltaic extension system to be in the contraction state.
Preferably, the photovoltaic extension system is a photovoltaic container.
By applying the technical scheme of the invention, the control method of the photovoltaic extension system comprises the following steps: acquiring a current telescopic state of the photovoltaic extension system; acquiring the current environment of the photovoltaic extension system; and controlling the stretching state of the photovoltaic extension system according to the current stretching state and the current environment of the photovoltaic extension system. The control method of the photovoltaic extension system can control the self extension state according to the current extension state and the current environment of the photovoltaic extension system, so that the photovoltaic extension system can automatically select a proper extension state according to the environment, the photovoltaic extension system can safely and stably operate under the current environment, the generated energy of the photovoltaic extension system can be maximized, the utilization rate of photovoltaic energy is improved, the intelligent degree and the automation degree of the photovoltaic system are improved, unattended operation is realized, and the labor cost is saved.
Drawings
Fig. 1 is a control schematic diagram of a control method of a photovoltaic extension system according to an embodiment of the present invention;
fig. 2 is a control flowchart of a control method of the photovoltaic extension system according to the embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the figures and the examples, but without limiting the invention.
The photovoltaic extension system in this embodiment is last to be provided with solar energy irradiance sensor, wind speed sensor and displacement sensor, is provided with guide rail deformation sensor on the guide rail that photovoltaic extension system is located, and solar energy irradiance sensor is used for the irradiance of detecting system surrounding environment, and wind speed sensor is used for the wind speed of detecting the environment, and guide rail deformation sensor is used for detecting the deformation of photovoltaic installation guide rail. The sensor collects the detected information to the controller, and the controller controls the telescopic mechanisms such as an electric push rod of the photovoltaic extension system according to the information detected by the sensor to realize the extension and retraction of the extension system.
Referring to fig. 1 and 2 in combination, according to an embodiment of the present invention, a control method of a photovoltaic extension system includes: acquiring a current telescopic state of the photovoltaic extension system; acquiring the current environment of the photovoltaic extension system; and controlling the stretching state of the photovoltaic extension system according to the current stretching state and the current environment of the photovoltaic extension system.
The control method of the photovoltaic extension system can control the self extension state according to the current extension state and the current environment of the photovoltaic extension system, so that the photovoltaic extension system can automatically select a proper extension state according to the environment, the photovoltaic extension system can safely and stably operate under the current environment, the generated energy of the photovoltaic extension system can be maximized, the utilization rate of photovoltaic energy is improved, the intelligent degree and the automation degree of the photovoltaic system are improved, unattended operation is realized, and the labor cost is saved.
The current environment includes at least one of: solar irradiance, ambient wind speed, and rail deformation.
The method for controlling the stretching state of the photovoltaic stretching system according to the current stretching state and the current environment of the photovoltaic stretching system comprises the following steps: when the photovoltaic extension system is in a retracted state; determining whether the solar irradiance is less than or equal to a for a time t 1; when the solar irradiance is less than or equal to a for a time t1, the photovoltaic extension system is maintained in the contracted state. Here, a is, for example, 200W/square meter, and t1 is, for example, 1 min. The above-mentioned values may be set according to actual conditions, and are not limited to the enumerated values.
Firstly, whether the solar irradiance G meets the requirement is determined, because if the solar irradiance G does not meet the requirement, the most basic conditions of the photovoltaic power generation cannot be met, and other conditions do not need to be judged, so that whether the most basic irradiance requirement of the photovoltaic power generation can be met needs to be judged firstly. When the requirement cannot be met, the photovoltaic extension system can be kept in a contraction state, and when the irradiance requirement can be met, other conditions can be judged, so that whether the photovoltaic extension system needs to be unfolded to generate power in the current environment or not is determined.
In this embodiment, the step of controlling the stretching state of the photovoltaic extension system according to the current stretching state of the photovoltaic extension system and the current environment further includes: when solar irradiance is greater than a, determining whether the ambient wind speed S is greater than or equal to b for a time t 2; and when the ambient wind speed is greater than or equal to b and lasts for t2 time, keeping the photovoltaic extension system in a contracted state. Here, b is, for example, 8m/s, and t2 is, for example, 1 min.
When the solar irradiance reaches the stretching condition of the photovoltaic extension system, if the ambient wind speed is too large, the photovoltaic extension system may be expanded to cause a safety problem due to too large windward area, which affects the safe operation of the photovoltaic extension system. When the ambient wind speed is within the set wind speed range, the environment where the photovoltaic extension system is located needs to be further judged at the moment, so that the photovoltaic extension system can be ensured to generate electricity in a safe and stable environment.
In this embodiment, the step of controlling the stretching state of the photovoltaic extension system according to the current stretching state of the photovoltaic extension system and the current environment further includes: when the ambient wind speed is less than b, determining whether the deformation gamma of the guide rail where the photovoltaic extension system is located is greater than or equal to c and lasts for t3 time; when the deformation of the guide rail where the photovoltaic extension system is located is larger than or equal to c and lasts for t3 time, keeping the photovoltaic extension system in a contraction state and giving an alarm; and when the deformation of the guide rail where the photovoltaic extension system is located is less than c, controlling the photovoltaic extension system to be unfolded and kept. Here, c is, for example, 0.01, and t3 is, for example, 1 min.
Generally speaking, the expansion of the photovoltaic extension system is performed along the guide rail, if the deformation of the guide rail is too large, the photovoltaic extension system cannot be normally expanded, and if the photovoltaic extension system is forcibly expanded, the photovoltaic extension system may be damaged. When the deformation of the guide rail is within the set range, the photovoltaic extension system can be safely unfolded, and the controller can control the electric push rod and the like to push the photovoltaic installation guide rail, so that the photovoltaic extension system is in an unfolded state and can normally generate electricity. If the guide rail deformation exceeds the set range, the guide rail deformation is over large, the photovoltaic extension system cannot be normally unfolded, the photovoltaic extension system needs to be kept to shrink at the moment, and the deformation fault of the guide rail is reported, so that the guide rail can be repaired in time, and the photovoltaic extension system can be normally unfolded.
The method for controlling the stretching state of the photovoltaic stretching system according to the current stretching state and the current environment of the photovoltaic stretching system comprises the following steps: when the photovoltaic extension system is in the unfolded state; determining whether the solar irradiance is less than d for a time t 4; and when the solar irradiance is less than d and lasts for t4 time, controlling the photovoltaic extension system to shrink. Here, d is, for example, 200W/square meter, and t4 is, for example, 1 min.
The step of controlling the stretching state of the photovoltaic extension system according to the current stretching state of the photovoltaic extension system and the current environment further comprises: when solar irradiance is greater than or equal to d, determining whether the ambient wind speed is greater than e and lasts for a time t 5; and when the ambient wind speed is greater than e and lasts for t5 time, controlling the photovoltaic extension system to contract. Here, e is, for example, 8m/s, and t2 is, for example, 5 s.
The step of controlling the stretching state of the photovoltaic extension system according to the current stretching state of the photovoltaic extension system and the current environment further comprises: when the ambient wind speed is less than or equal to e, determining whether the deformation of the guide rail where the photovoltaic extension system is located is greater than f and lasts for t6 time; when the deformation of the guide rail where the photovoltaic extension system is located is larger than f and lasts for t6 time, controlling the photovoltaic extension system to contract; and when the deformation of the guide rail on which the photovoltaic extension system is arranged is less than or equal to f, returning to the step of determining whether the solar irradiance is less than d and lasts for t4 time. Where f is, for example, 0.01 and t6 is, for example, 5 s.
After the step of obtaining the current stretching state of the photovoltaic extension system, the step of obtaining the current environment of the photovoltaic extension system further comprises the following steps: detecting the motion state of the photovoltaic extension system; and when the photovoltaic extension system is in the motion state, controlling the photovoltaic extension system to be in the contraction state. When the photovoltaic extension system is in a moving state, the photovoltaic extension system may be in a displacement state or in a carried state, and therefore the photovoltaic extension system is in a state unsuitable for being unfolded.
The photovoltaic extension system controls the extension of the photovoltaic extension system when the solar irradiation intensity of the environment, the ambient wind speed and the deformation of the installation guide rail are detected by the sensor at any time, the photovoltaic extension system is controlled to be extended when the safety of the photovoltaic extension system is endangered due to the fact that the ambient wind speed is too high, snow is accumulated on the surface of a component to be overloaded, or the deformation of the installation guide rail material is invalid, so that the safety and the reliability of the use of the photovoltaic extension system are ensured, and the service life of the photovoltaic extension system.
The solar irradiance, the wind speed and the guide rail deformation can be set to be any parameters according to the placing position of the extension system or the requirements of users.
The photovoltaic extension system is, for example, a photovoltaic container, and may be another photovoltaic extension system. Because the area of container top restricts photovoltaic module and lays, photovoltaic extension system can increase the photovoltaic board and lay the quantity, improves the system generated energy, and photovoltaic extension system can contract automatically simultaneously, saves space and is convenient for transport. Because this photovoltaic extension system can automated inspection meteorological environment factor and guide rail deformation condition realize automatic control, consequently can strengthen system security and reliability under the assurance provides the system generated energy condition.
Of course, the above is a preferred embodiment of the present invention. It should be noted that, for a person skilled in the art, several modifications and refinements can be made without departing from the basic principle of the invention, and these modifications and refinements are also considered to be within the protective scope of the invention.
Claims (9)
1. A method of controlling a photovoltaic extension system, comprising:
acquiring a current telescopic state of the photovoltaic extension system;
acquiring the current environment of the photovoltaic extension system; wherein the current environment comprises at least one of: solar irradiance, ambient wind speed, and rail deformation;
and detecting whether the solar irradiance meets a preset requirement, and if so, controlling the stretching state of the photovoltaic stretching system according to the current stretching state and the current environment of the photovoltaic stretching system.
2. The method for controlling the photovoltaic extension system according to claim 1, wherein the step of controlling the extension state of the photovoltaic extension system according to the current extension state and the current environment of the photovoltaic extension system comprises:
when the photovoltaic extension system is in a retracted state;
determining whether the solar irradiance is less than or equal to a for a time t 1;
when the solar irradiance is less than or equal to a for a time t1, the photovoltaic extension system is maintained in the contracted state.
3. The method for controlling the photovoltaic extension system according to claim 2, wherein the step of controlling the extension state of the photovoltaic extension system according to the current extension state and the current environment of the photovoltaic extension system further comprises:
when the solar irradiance is greater than a,
determining whether the ambient wind speed is greater than or equal to b for a time t 2;
and when the ambient wind speed is greater than or equal to b and lasts for t2 time, keeping the photovoltaic extension system in a contracted state.
4. The method for controlling the photovoltaic extension system according to claim 3, wherein the step of controlling the extension state of the photovoltaic extension system according to the current extension state and the current environment of the photovoltaic extension system further comprises:
when the ambient wind speed is less than b,
determining whether the deformation of the guide rail where the photovoltaic extension system is located is greater than or equal to c and lasts for t3 time;
when the deformation of the guide rail where the photovoltaic extension system is located is larger than or equal to c and lasts for t3 time, keeping the photovoltaic extension system in a contraction state and giving an alarm;
and when the deformation of the guide rail where the photovoltaic extension system is located is less than c, controlling the photovoltaic extension system to be unfolded and kept.
5. The method for controlling the photovoltaic extension system according to claim 1, wherein the step of controlling the extension state of the photovoltaic extension system according to the current extension state and the current environment of the photovoltaic extension system comprises:
when the photovoltaic extension system is in the unfolded state;
determining whether the solar irradiance is less than d for a time t 4;
and when the solar irradiance is less than d and lasts for t4 time, controlling the photovoltaic extension system to shrink.
6. The method for controlling the photovoltaic extension system according to claim 5, wherein the step of controlling the extension state of the photovoltaic extension system according to the current extension state and the current environment of the photovoltaic extension system further comprises:
when solar irradiance is greater than or equal to d,
determining whether the ambient wind speed is greater than e for a time t 5;
and when the ambient wind speed is greater than e and lasts for t5 time, controlling the photovoltaic extension system to contract.
7. The method for controlling the photovoltaic extension system according to claim 6, wherein the step of controlling the extension state of the photovoltaic extension system according to the current extension state and the current environment of the photovoltaic extension system further comprises:
when the ambient wind speed is less than or equal to e,
determining whether the deformation of the guide rail where the photovoltaic extension system is located is larger than f and lasts for t6 time;
when the deformation of the guide rail where the photovoltaic extension system is located is larger than f and lasts for t6 time, controlling the photovoltaic extension system to contract;
and when the deformation of the guide rail on which the photovoltaic extension system is arranged is less than or equal to f, returning to the step of determining whether the solar irradiance is less than d and lasts for t4 time.
8. The method for controlling the photovoltaic extension system according to claim 1, wherein after the step of obtaining the current telescopic state of the photovoltaic extension system, the step of obtaining the current environment of the photovoltaic extension system further comprises:
detecting the motion state of the photovoltaic extension system;
and when the photovoltaic extension system is in the motion state, controlling the photovoltaic extension system to be in the contraction state.
9. The method of controlling a photovoltaic extension system according to any one of claims 1 to 8, wherein the photovoltaic extension system is a photovoltaic container.
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| CN201710267449.8A CN107219862B (en) | 2017-04-21 | 2017-04-21 | Control method of photovoltaic extension system |
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| CN201710267449.8A CN107219862B (en) | 2017-04-21 | 2017-04-21 | Control method of photovoltaic extension system |
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| KR100819861B1 (en) * | 2007-04-19 | 2008-04-08 | 다울이엔씨(주) | Solar tracker |
| US20090260619A1 (en) * | 2008-04-20 | 2009-10-22 | The Boeing Company | Autonomous heliostat for solar power plant |
| US8418983B2 (en) * | 2010-07-29 | 2013-04-16 | First Solar, Inc. | Slider clip and photovoltaic structure mounting system |
| DE202010008439U1 (en) * | 2010-09-02 | 2011-12-07 | Reis Group Holding Gmbh & Co. Kg | System for tracking sunlight-dependent solar cell modules |
| CN102468351B (en) * | 2010-10-29 | 2015-11-25 | 新奥科技发展有限公司 | Be arranged on the solar energy system on building |
| CN202385035U (en) * | 2011-10-20 | 2012-08-15 | 三一重工股份有限公司 | Solar cell panel device and engineering machinery |
| CN103378191A (en) * | 2012-04-23 | 2013-10-30 | 杜邦太阳能有限公司 | Stretchy type solar photovoltaic assembly and photovoltaic system |
| US9772260B2 (en) * | 2013-03-01 | 2017-09-26 | Solarwindow Technologies, Inc. | Building integrated photovoltaic devices as smart sensors for intelligent building energy management systems |
| US9813022B2 (en) * | 2014-02-21 | 2017-11-07 | The Boeing Company | Dynamically setting a threshold output level for a solar array |
| CN204947980U (en) * | 2015-07-24 | 2016-01-06 | 深圳市创益新能源科技有限公司 | Photovoltaic array in a kind of modular water |
| CN205004989U (en) * | 2015-10-22 | 2016-01-27 | 新奥光伏能源有限公司 | Photovoltaic power generation device and photovoltaic power generation system |
| CN205160467U (en) * | 2015-10-28 | 2016-04-13 | 重庆电力高等专科学校 | A environmental parameter gather box for photovoltaic power generation system monitoring devices |
| CN205945310U (en) * | 2016-08-18 | 2017-02-08 | 南京中核能源工程有限公司 | A movable installing support for photovoltaic module |
| CN106369850B (en) * | 2016-08-27 | 2018-06-08 | 电子科技大学 | A kind of non-fully opened type foldable solar energy device |
| CN206099857U (en) * | 2016-09-30 | 2017-04-12 | 中国大唐集团科学技术研究院有限公司 | Telescopic photovoltaic support of symmetry |
| CN106508489A (en) * | 2016-10-21 | 2017-03-22 | 福建农林大学 | Light-adjustable folding type diffusing glass greenhouse photovoltaic sunshade curtain |
| CN106452298A (en) * | 2016-11-04 | 2017-02-22 | 东莞市北扬工业设计有限公司 | Bracket capable of folding and storing photovoltaic panel |
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