CN116111728A - Interruption control method for photovoltaic inverter system - Google Patents
Interruption control method for photovoltaic inverter system Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
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- H—ELECTRICITY
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- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
- H02S50/10—Testing of PV devices, e.g. of PV modules or single PV cells
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Abstract
The invention discloses a photovoltaic inversion system interrupt control method, which comprises the following steps: the power generation power monitoring module monitors the power generation power of the photovoltaic cell panel, determines the power generation condition of the photovoltaic cell panel according to the power generation power, and transmits the photovoltaic cell panel mark which does not accord with the power generation power to the photovoltaic cell panel information acquisition module. When the power generation power of the photovoltaic cell panel in the photovoltaic inversion system is lower than that of a standard photovoltaic cell panel, the surface of the photovoltaic cell panel lower than the standard power generation power is preferably checked, whether the covering is present or not is timely found to influence the power generation power of the photovoltaic cell panel, whether the covering is a problem of the photovoltaic cell panel or the covering is timely found, the influence caused by the covering is effectively prevented from being mistakenly considered as the damage of the photovoltaic power generation panel by the photovoltaic inversion system, and the adverse effect on the performance and the operation of the system caused by the mistaken interruption of the photovoltaic inversion system is effectively prevented.
Description
Technical Field
The invention relates to the technical field of interruption control of a photovoltaic inverter system, in particular to an interruption control method of the photovoltaic inverter system.
Background
The photovoltaic inversion system is equipment for converting direct-current electric energy generated by a photovoltaic cell panel into alternating-current electric energy. In photovoltaic systems, photovoltaic panels convert light energy to direct current electrical energy by absorbing solar energy, and inverters convert the direct current electrical energy to alternating current electrical energy for use by domestic, industrial and commercial facilities. In the photovoltaic inverter system, when a fault or other problems in the power grid are detected, the inverter automatically cuts off the connection with the power grid so as to ensure the safety and stability between the power grid and the inverter. In photovoltaic inverter systems, interrupt control is typically implemented by a protection device in the inverter, which can monitor the voltage, frequency and other parameters in the grid, and trigger an interrupt protection function once an abnormal situation is found.
The prior art has the following defects:
when the power generation power of the photovoltaic inverter system is found to be smaller than that of other photovoltaic panels with the same specification to a set threshold value, the system generally recognizes that the photovoltaic panels are damaged, and the corresponding photovoltaic inverter system is directly interrupted to avoid further damage to a corresponding power grid and equipment, if the light receiving area of the photovoltaic panels is smaller due to larger dirt area, dust area or other sundries covered by the surfaces of the photovoltaic panels, and further the power generation power of the photovoltaic panels is smaller to the set threshold value, the system cannot recognize in time, and if the photovoltaic inverter system corresponding to the photovoltaic panels is directly interrupted, adverse effects on the performance and operation of the system can be caused.
The above information disclosed in the background section is only for enhancement of understanding of the background of the disclosure and therefore it may include information that does not form the prior art that is already known to a person of ordinary skill in the art.
Disclosure of Invention
The invention aims to provide a photovoltaic inverter system interrupt control method for solving the problems in the background technology.
In order to achieve the above object, the present invention provides the following technical solutions: a photovoltaic inverter system interrupt control method comprises the following steps:
the power generation power monitoring module monitors the power generation power of the photovoltaic cell panel, determines the power generation condition of the photovoltaic cell panel according to the power generation power, and transmits the photovoltaic cell panel mark which does not accord with the power generation power to the photovoltaic cell panel information acquisition module;
the photovoltaic cell panel information acquisition module acquires the covering information of the surface of the marked photovoltaic cell panel, generates an influence coefficient according to the acquired information, and transmits the generated influence coefficient information to the data analysis module;
the data analysis module receives influence coefficient information of the surface of the photovoltaic cell panel, analyzes the influence of the covering on the power generation of the photovoltaic cell panel according to the influence coefficient, and transmits the influence information of the covering on the power generation of the photovoltaic cell panel to the comprehensive analysis module;
the comprehensive analysis module comprehensively analyzes the influence of the photovoltaic cell panel which does not accord with the generated power on the generated power of the photovoltaic cell panel by combining the covering.
Preferably, the generated power is the total generated power in unit time, the generated power of the photovoltaic cell panel is monitored in real time through a generated power monitoring module, if the generated energy of the photovoltaic cell panel in T time is KW and the generated power of the photovoltaic cell panel in T time is Jer, the generated power of the photovoltaic cell panel is:
。
preferably, a standard threshold YZa is set for the power generation of the photovoltaic cell panel, after the power generation Jer of the photovoltaic cell panel is obtained, the power generation Jer of the photovoltaic cell panel is compared with the standard threshold YZa, and if the power generation Jer of the photovoltaic cell panel is greater than or equal to the standard threshold YZa, the power generation of the photovoltaic cell panel is high, the photovoltaic cell panel is not marked; if the generated power Jer of the photovoltaic cell panel is smaller than the standard threshold YZa, the photovoltaic cell panel is marked if the generated power of the photovoltaic cell panel is low, and the marked photovoltaic cell panel information is transmitted to the photovoltaic cell panel information acquisition module.
Preferably, the acquired coverage information of the marked photovoltaic cell panel surface comprises the light transmittance of the cover, the average coverage area of the cover and the discrete degree of the coverage area of the cover, and after the light transmittance of the photovoltaic cell panel surface cover is obtained, the light transmittance of the photovoltaic cell panel surface cover is marked as TGLj;
the light transmittance of the cover was calculated by measuring the light transmittance of the cover and the light transmittance of the cover without the cover, and the specific procedure was as follows:
s1: acquiring solar rays irradiating on a transparent reference object (such as glass) and recording the initial intensity of the solar rays, wherein the initial intensity of the solar rays can be acquired through an illumination intensity sensor;
s2: acquiring the intensity of solar rays passing through the cover;
s3: measuring the light intensity without a cover;
s4: calculating the light transmittance of the cover;
the light transmittance is calculated by the following formula: transmittance = light intensity through the cover/light intensity through the transparent reference object, the transmittance is typically expressed as a percentage.
Preferably, the mean coverage area of the photovoltaic panel cover is calculated as follows:
dividing the photovoltaic cell panel into n areas, acquiring the average coverage area Si of the surface covering of the photovoltaic cell panel in each area, and recording that the average coverage area of the surface covering of the photovoltaic cell panel is Spj, wherein the calculation formula of the average coverage area of the surface covering of the photovoltaic cell panel is as follows:
；
after the average coverage area of the photovoltaic cell panel cover is obtained, calculating the discrete degree of the coverage area of the cover, and recording that the discrete degree of the coverage area of the surface cover of the photovoltaic cell panel is Xi, wherein the calculation formula of the discrete degree of the coverage area of the surface cover of the photovoltaic cell panel is as follows:
。
preferably, after the light transmittance of the surface covering of the photovoltaic cell panel, the average coverage area of the covering and the discrete degree of the coverage area of the covering are obtained, the light transmittance TGLj of the surface covering of the photovoltaic cell panel, the average coverage area Spj of the covering and the discrete degree Xi of the coverage area of the covering are subjected to formulation processing to generate an influence coefficient YXm according to the following formula:
the method comprises the steps of carrying out a first treatment on the surface of the Wherein f1, f2 and f3 are respectively preset proportionality coefficients of the light transmittance of the surface covering of the photovoltaic cell panel, the average covering area of the covering and the discrete degree of the covering, and f1, f2 and f3 are all larger than 0./>
Preferably, the data analysis module analyzes the photovoltaic cell panel according to the influence coefficient information of the surface covering of the photovoltaic cell panel as follows:
setting a threshold YZb on the influence coefficient of the surface covering of the photovoltaic cell panel, if the influence coefficient YXm of the surface covering of the photovoltaic cell panel is smaller than the threshold YZb, indicating that the surface of the photovoltaic cell panel has a small covering area and the light transmittance of the covering is very high, indicating that the surface of the photovoltaic cell panel is little influenced by the covering, further indicating that the covering has no influence on the photovoltaic cell panel, and if the influence coefficient YXm of the surface covering of the photovoltaic cell panel is larger than or equal to the threshold YZb, indicating that the surface of the photovoltaic cell panel has a large covering area, or the light transmittance of the covering is low, or both the surface covering of the photovoltaic cell panel and the light transmittance of the covering are large, indicating that the surface of the photovoltaic cell panel is greatly influenced by the covering, and further indicating that the covering has influence on the photovoltaic cell panel.
Preferably, after the comprehensive analysis module receives the analysis result that the data analysis module affects the power generation of the photovoltaic cell panel according to the surface covering of the photovoltaic cell panel, the comprehensive analysis module further analyzes the photovoltaic cell panel which does not accord with the power generation, and the analysis logic is as follows:
if the photovoltaic inversion system detects that the power generation power of the photovoltaic cell panel is lower than the power generation power of the standard photovoltaic cell panel, but the surface of the photovoltaic cell panel is slightly influenced by the cover, so that the cover does not influence the photovoltaic cell panel, the photovoltaic inversion system interrupts the corresponding photovoltaic inversion system, wherein the power generation power of the photovoltaic cell panel is lower than the power generation power of the standard photovoltaic cell panel due to the damage of the photovoltaic cell panel;
if the photovoltaic inversion system detects that the power generation power of the photovoltaic cell panel is lower than that of a standard photovoltaic cell panel, but the surface of the photovoltaic cell panel is greatly influenced by the cover, so that when the cover influences the photovoltaic cell panel, the cover influences the photovoltaic cell panel to generate power lower than that of the standard photovoltaic cell panel, or the photovoltaic cell panel is damaged at the same time to generate power lower than that of the standard photovoltaic cell panel and the cover influences the photovoltaic cell panel to generate power lower than that of the standard photovoltaic cell panel, an early warning prompt is sent out through the comprehensive analysis module to prompt an inspection staff to inspect the surface of the photovoltaic cell panel.
Preferably, after the surface of the photovoltaic cell panel is subjected to investigation and cleaning, the influence coefficient of the surface covering of the photovoltaic cell panel is acquired through the photovoltaic cell panel information acquisition module, so that the influence coefficient of the surface covering of the photovoltaic cell panel is lower than a threshold value set by the influence coefficient, the influence of the covering on the photovoltaic cell panel is eliminated, and after the influence of the covering on the photovoltaic cell panel is eliminated, if the condition that the power generation power of the photovoltaic cell panel is lower than the standard photovoltaic cell panel is also existed, the condition that the power generation power of the photovoltaic cell panel is lower than the standard photovoltaic cell panel is simultaneously damaged, and the power generation power of the photovoltaic cell panel is lower than the standard photovoltaic cell panel is caused by the influence of the covering, and the photovoltaic inversion system interrupts the corresponding photovoltaic inversion system;
after eliminating the influence of the cover on the photovoltaic cell panel, if the condition that the generated power of the photovoltaic cell panel is lower than the generated power of the standard photovoltaic cell panel does not exist, the condition shows that the generated power of the photovoltaic cell panel is lower than the generated power of the standard photovoltaic cell panel due to the influence of the cover, the photovoltaic inverter system does not interrupt the corresponding photovoltaic inverter system, and after the surface of the photovoltaic cell panel is checked and cleaned, the normal use of the photovoltaic inverter system is continuously maintained.
In the technical scheme, the invention has the technical effects and advantages that:
according to the invention, when the generated power of the photovoltaic cell panel in the photovoltaic inversion system is lower than the generated power of the standard photovoltaic cell panel, the surface of the photovoltaic cell panel lower than the standard generated power is preferably checked, whether the covering is harmful to the generated power of the photovoltaic cell panel is timely found, if the covering is not harmful to the generated power of the photovoltaic cell panel, the photovoltaic inversion system interrupts the corresponding photovoltaic inversion system, if the covering is found to be harmful to the photovoltaic cell panel, the surface of the photovoltaic cell panel is timely checked and cleaned, the influence of the covering on the photovoltaic cell panel is eliminated, the photovoltaic cell panel is timely judged, and the influence caused by the covering is timely found to be mistaken for the damage of the photovoltaic cell panel, so that the photovoltaic inversion system is effectively prevented from mistakenly interrupting the photovoltaic inversion system corresponding to the photovoltaic cell panel, and further adverse effects on the performance and operation of the system are effectively prevented.
Drawings
For a clearer description of embodiments of the present application or of the solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments described in the present invention, and that other drawings may be obtained according to these drawings for a person skilled in the art.
Fig. 1 is a flow chart of a method of interruption control of a photovoltaic inverter system according to the present invention.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these example embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art.
The invention provides a photovoltaic inverter system interrupt control method as shown in fig. 1, which comprises the following steps:
the power generation power monitoring module monitors the power generation power of the photovoltaic cell panel, determines the power generation condition of the photovoltaic cell panel according to the power generation power, and transmits the photovoltaic cell panel mark which does not accord with the power generation power to the photovoltaic cell panel information acquisition module;
the power generation power is the total power generation amount in unit time, the power generation power of the photovoltaic cell panel is monitored in real time through a power generation power monitoring module, if the power generation amount of the photovoltaic cell panel in T time is KW and the power generation power of the photovoltaic cell panel in T time is Jer, the power generation power of the photovoltaic cell panel is:
；
setting a standard threshold YZa for the power generation power of the photovoltaic cell panel, comparing the power generation power Jer of the photovoltaic cell panel with the standard threshold YZa after obtaining the power generation power Jer of the photovoltaic cell panel, and if the power generation power Jer of the photovoltaic cell panel is greater than or equal to the standard threshold YZa, indicating that the power generation power of the photovoltaic cell panel is high, not marking the photovoltaic cell panel; if the power Jer of the photovoltaic cell panel is smaller than the standard threshold YZa, the photovoltaic cell panel is marked if the power of the photovoltaic cell panel is low, and the marked photovoltaic cell panel information is transmitted to the photovoltaic cell panel information acquisition module;
the photovoltaic cell panel information acquisition module acquires the covering information of the surface of the marked photovoltaic cell panel, generates an influence coefficient according to the acquired information, and transmits the generated influence coefficient information to the data analysis module;
the acquired covering information of the marked photovoltaic cell panel surface comprises the light transmittance of a covering, the average covering area of the covering and the discrete degree of the covering, and after the light transmittance of the photovoltaic cell panel surface covering is obtained, the light transmittance of the photovoltaic cell panel surface covering is marked as TGLj;
it should be noted that, the covering includes covering on the surface of the photovoltaic cell panel with dirt, dust or other sundries, etc., the area of the covering on the surface of the photovoltaic cell panel can be measured by digital measurement, the measurement mode is that using a digital scanner or camera to shoot the picture of the surface of the photovoltaic cell panel and the covering, identifying the covering on the surface of the photovoltaic cell panel, then using image processing software (such as Photoshop, imageJ, etc.) to process, calculate the covering area;
the mean coverage area of the photovoltaic panel cover was calculated as follows:
dividing the photovoltaic cell panel into n areas, acquiring the average coverage area Si of the surface covering of the photovoltaic cell panel in each area, and recording that the average coverage area of the surface covering of the photovoltaic cell panel is Spj, wherein the calculation formula of the average coverage area of the surface covering of the photovoltaic cell panel is as follows:
；
after the average coverage area of the photovoltaic cell panel cover is obtained, calculating the discrete degree of the coverage area of the cover, and recording that the discrete degree of the coverage area of the surface cover of the photovoltaic cell panel is Xi, wherein the calculation formula of the discrete degree of the coverage area of the surface cover of the photovoltaic cell panel is as follows:
；
the light transmittance of the cover was calculated by measuring the light transmittance of the cover and the light transmittance of the cover without the cover, and the specific procedure was as follows:
s1: acquiring solar rays irradiating on a transparent reference object (such as glass) and recording the initial intensity of the solar rays, wherein the initial intensity of the solar rays can be acquired through an illumination intensity sensor;
s2: acquiring the intensity of solar rays passing through the cover;
s3: measuring the light intensity without a cover;
s4: calculating the light transmittance of the cover;
the light transmittance is calculated by the following formula: transmittance = light intensity through the cover/light intensity through the transparent reference object, the transmittance typically being expressed as a percentage;
after the light transmittance of the surface covering of the photovoltaic cell panel, the average coverage area of the covering and the discrete degree of the coverage area of the covering are obtained, the light transmittance TGLj of the surface covering of the photovoltaic cell panel, the average coverage area Spj of the covering and the discrete degree Xi of the coverage area of the covering are subjected to formulation processing to generate an influence coefficient YXm according to the following formula:
the method comprises the steps of carrying out a first treatment on the surface of the Wherein f1, f2 and f3 are respectively preset proportionality coefficients of the light transmittance of the surface covering of the photovoltaic cell panel, the average covering area of the covering and the discrete degree of the covering, and f1, f2 and f3 are all larger than 0;
when the light transmittance of the cover on the surface of the photovoltaic cell panel is larger, the average coverage area of the cover is smaller, and the degree of dispersion of the coverage area of the cover is smaller, namely the influence coefficient YXm is smaller, the phenomenon that the coverage area of the cover is small and the light transmittance of the cover is large is indicated to be common on the surface of the photovoltaic cell panel, and the influence of the cover on the surface of the photovoltaic cell panel is small;
after the influence coefficient of the surface covering of the photovoltaic cell panel is obtained, the information acquisition module of the photovoltaic cell panel transmits the obtained influence coefficient of the surface covering of the photovoltaic cell panel to the data analysis module;
the data analysis module receives influence coefficient information of the surface of the photovoltaic cell panel, analyzes the influence of the covering on the power generation of the photovoltaic cell panel according to the influence coefficient, and transmits the influence information of the covering on the power generation of the photovoltaic cell panel to the comprehensive analysis module;
the data analysis module analyzes the photovoltaic cell panel according to the influence coefficient information of the surface covering of the photovoltaic cell panel as follows:
setting a threshold YZb on the influence coefficient of the surface covering of the photovoltaic cell panel, if the influence coefficient YXm of the surface covering of the photovoltaic cell panel is smaller than the threshold YZb, indicating that the phenomenon that the coverage area of the surface of the photovoltaic cell panel is small and the light transmittance of the covering is very high is commonly existed, indicating that the surface of the photovoltaic cell panel is little influenced by the covering, further indicating that the covering has no influence on the photovoltaic cell panel, and if the influence coefficient YXm of the surface covering of the photovoltaic cell panel is larger than or equal to the threshold YZb, indicating that the coverage area of the covering is large on the surface of the photovoltaic cell panel, or the light transmittance of the covering is low, or both the phenomenon that the coverage area of the surface covering of the photovoltaic cell panel is large and the light transmittance of the covering is low is also present, indicating that the surface of the photovoltaic cell panel is greatly influenced by the covering, further indicating that the covering has influence on the photovoltaic cell panel;
the data analysis module analyzes the influence of the surface covering of the photovoltaic cell panel on the power generation of the photovoltaic cell panel, and then sends the analyzed result to the comprehensive analysis module;
the comprehensive analysis module comprehensively analyzes the influence of the photovoltaic cell panel which does not accord with the power generation power on the power generation power of the photovoltaic cell panel by combining the covering;
after receiving the analysis result that the data analysis module influences the power generation power of the photovoltaic cell panel according to the surface covering of the photovoltaic cell panel, the comprehensive analysis module further analyzes the photovoltaic cell panel which does not accord with the power generation power, and the analysis logic is as follows:
if the photovoltaic inverter system detects that the power generation power of the photovoltaic cell panel is lower than the power generation power of the standard photovoltaic cell panel, but the surface of the photovoltaic cell panel is slightly influenced by the cover, so that the cover does not influence the photovoltaic cell panel, the power generation power is lower than the power generation power of the standard photovoltaic cell panel due to the damage of the photovoltaic cell panel, and the photovoltaic inverter system interrupts the corresponding photovoltaic inverter system;
if the photovoltaic inversion system detects that the power generation power of the photovoltaic cell panel is lower than the power generation power of the standard photovoltaic cell panel, but the surface of the photovoltaic cell panel is greatly influenced by the cover, so that when the cover influences the photovoltaic cell panel, the influence of the cover indicates that the power generation power of the photovoltaic cell panel is lower than the power generation power of the standard photovoltaic cell panel, or the power generation power of the photovoltaic cell panel is lower than the power generation power of the standard photovoltaic cell panel due to the fact that the damage of the photovoltaic cell panel occurs at the same time and the influence of the cover indicates that the power generation power of the photovoltaic cell panel is lower than the power generation power of the standard photovoltaic cell panel, at the moment, an early warning prompt is sent out through the comprehensive analysis module to prompt an maintainer to check the surface of the photovoltaic cell panel;
after the surface of the photovoltaic cell panel is subjected to investigation and cleaning, the influence coefficient of the surface covering of the photovoltaic cell panel is acquired through the photovoltaic cell panel information acquisition module, so that the influence coefficient of the surface covering of the photovoltaic cell panel is lower than a threshold value set by the influence coefficient, the influence of the covering on the photovoltaic cell panel is eliminated, and after the influence of the covering on the photovoltaic cell panel is eliminated, if the condition that the power generation power of the photovoltaic cell panel is lower than the power generation power of the standard photovoltaic cell panel is also existed, the condition that the power generation power of the photovoltaic cell panel is lower than the power generation power of the standard photovoltaic cell panel due to the damage of the photovoltaic cell panel and the power generation power of the photovoltaic cell panel is lower than the power generation power of the standard photovoltaic cell panel due to the influence of the covering are indicated, and at the moment, the photovoltaic inversion system interrupts the corresponding photovoltaic inversion system;
after eliminating the influence of the cover on the photovoltaic cell panel, if the condition that the generated power of the photovoltaic cell panel is lower than the generated power of the standard photovoltaic cell panel does not exist, the condition shows that the generated power of the photovoltaic cell panel is lower than the generated power of the standard photovoltaic cell panel due to the influence of the cover, at the moment, the corresponding photovoltaic inverter system is not interrupted by the photovoltaic inverter system, and after the surface of the photovoltaic cell panel is checked and cleaned, the normal use of the photovoltaic inverter system is continuously maintained.
According to the invention, when the generated power of the photovoltaic cell panel in the photovoltaic inversion system is lower than the generated power of the standard photovoltaic cell panel, the surface of the photovoltaic cell panel lower than the standard generated power is checked preferentially, whether the covering is harmful to the generated power of the photovoltaic cell panel is found timely, if the covering is not harmful to the generated power of the photovoltaic cell panel, the photovoltaic inversion system interrupts the corresponding photovoltaic inversion system, if the covering is found to be harmful to the photovoltaic cell panel, the surface of the photovoltaic cell panel is checked and cleaned timely, the influence of the covering on the photovoltaic cell panel is judged again, and the problem of the photovoltaic cell panel or the influence of the covering is found timely, so that the influence of the photovoltaic inversion system caused by the covering is mistakenly considered as the damage to the photovoltaic power panel, and the error interruption of the photovoltaic inversion system corresponding to the photovoltaic power panel is effectively prevented, and the adverse influence on the performance and operation of the system due to the error interruption of the photovoltaic inversion system is effectively prevented;
the above formulas are all formulas with dimensions removed and numerical values calculated, the formulas are formulas with a large amount of data collected for software simulation to obtain the latest real situation, and preset parameters in the formulas are set by those skilled in the art according to the actual situation.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the invention, which is defined by the appended claims.
It is noted that relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.
In the several embodiments provided in the present application, it should be understood that the disclosed systems, apparatuses, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other forms.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (9)
1. The interruption control method of the photovoltaic inverter system is characterized by comprising the following steps of:
the power generation power monitoring module monitors the power generation power of the photovoltaic cell panel, determines the power generation condition of the photovoltaic cell panel according to the power generation power, and transmits the photovoltaic cell panel mark which does not accord with the power generation power to the photovoltaic cell panel information acquisition module;
the photovoltaic cell panel information acquisition module acquires the covering information of the surface of the marked photovoltaic cell panel, generates an influence coefficient according to the acquired information, and transmits the generated influence coefficient information to the data analysis module;
the data analysis module receives influence coefficient information of the surface of the photovoltaic cell panel, analyzes the influence of the covering on the power generation of the photovoltaic cell panel according to the influence coefficient, and transmits the influence information of the covering on the power generation of the photovoltaic cell panel to the comprehensive analysis module;
the comprehensive analysis module comprehensively analyzes the influence of the photovoltaic cell panel which does not accord with the generated power on the generated power of the photovoltaic cell panel by combining the covering.
2. The interruption control method of a photovoltaic inverter system according to claim 1, wherein the generated power is the total amount of generated power in unit time, the generated power of the photovoltaic panel is monitored in real time by a generated power monitoring module, and if the generated power of the photovoltaic panel in T time is KW and the generated power of the photovoltaic panel in T time is Jer, the generated power of the photovoltaic panel is:
。
3. the interruption control method of the photovoltaic inverter system according to claim 2, wherein a standard threshold YZa is set for the power generation of the photovoltaic panel, after the power generation Jer of the photovoltaic panel is obtained, the power generation Jer of the photovoltaic panel is compared with the standard threshold YZa, and if the power generation Jer of the photovoltaic panel is greater than or equal to the standard threshold YZa, the power generation of the photovoltaic panel is indicated to be high, and the photovoltaic panel is not marked; if the generated power Jer of the photovoltaic cell panel is smaller than the standard threshold YZa, the photovoltaic cell panel is marked if the generated power of the photovoltaic cell panel is low, and the marked photovoltaic cell panel information is transmitted to the photovoltaic cell panel information acquisition module.
4. The method for controlling interruption of a photovoltaic inverter system according to claim 3, wherein the acquired coverage information of the surface of the marked photovoltaic cell panel comprises the light transmittance of a cover, the average coverage area of the cover and the degree of dispersion of the coverage area of the cover, and the light transmittance of the surface cover of the photovoltaic cell panel is marked as TGLj after the light transmittance of the surface cover of the photovoltaic cell panel is acquired;
the light transmittance of the cover was calculated by measuring the light transmittance of the cover and the light transmittance of the cover without the cover, and the specific procedure was as follows:
s1: acquiring solar rays irradiating on a transparent reference object (such as glass) and recording the initial intensity of the solar rays, wherein the initial intensity of the solar rays can be acquired through an illumination intensity sensor;
s2: acquiring the intensity of solar rays passing through the cover;
s3: measuring the light intensity without a cover;
s4: calculating the light transmittance of the cover;
the light transmittance is calculated by the following formula: transmittance = light intensity through the cover/light intensity through the transparent reference object, the transmittance is typically expressed as a percentage.
5. The method for interruption control of a photovoltaic inverter system of claim 4, wherein the average coverage area of the photovoltaic panel cover is calculated as follows:
dividing the photovoltaic cell panel into n areas, acquiring the average coverage area Si of the surface covering of the photovoltaic cell panel in each area, and recording that the average coverage area of the surface covering of the photovoltaic cell panel is Spj, wherein the calculation formula of the average coverage area of the surface covering of the photovoltaic cell panel is as follows:
；
after the average coverage area of the photovoltaic cell panel cover is obtained, calculating the discrete degree of the coverage area of the cover, and recording that the discrete degree of the coverage area of the surface cover of the photovoltaic cell panel is Xi, then calculating the discrete degree of the coverage area of the surface cover of the photovoltaic cell panelThe formula is:
。
6. the method for controlling interruption of a photovoltaic inverter system according to claim 5, wherein after obtaining the light transmittance of a photovoltaic panel surface covering, the average covering area of the covering, and the degree of dispersion of the covering, the light transmittance TGLj of the photovoltaic panel surface covering, the average covering area Spj of the covering, and the degree of dispersion Xi of the covering are formulated to generate an influence coefficient YXm according to the following formula:
the method comprises the steps of carrying out a first treatment on the surface of the Wherein f1, f2 and f3 are respectively preset proportionality coefficients of the light transmittance of the surface covering of the photovoltaic cell panel, the average covering area of the covering and the discrete degree of the covering, and f1, f2 and f3 are all larger than 0.
7. The interruption control method of the photovoltaic inverter system of claim 6, wherein the analysis of the photovoltaic panel by the data analysis module according to the influence coefficient information of the surface covering of the photovoltaic panel is as follows:
setting a threshold YZb on the influence coefficient of the surface covering of the photovoltaic cell panel, if the influence coefficient YXm of the surface covering of the photovoltaic cell panel is smaller than the threshold YZb, indicating that the surface of the photovoltaic cell panel has a small covering area and the light transmittance of the covering is very high, indicating that the surface of the photovoltaic cell panel is little influenced by the covering, further indicating that the covering has no influence on the photovoltaic cell panel, and if the influence coefficient YXm of the surface covering of the photovoltaic cell panel is larger than or equal to the threshold YZb, indicating that the surface of the photovoltaic cell panel has a large covering area, or the light transmittance of the covering is low, or both the surface covering of the photovoltaic cell panel and the light transmittance of the covering are large, indicating that the surface of the photovoltaic cell panel is greatly influenced by the covering, and further indicating that the covering has influence on the photovoltaic cell panel.
8. The method for controlling interruption of a photovoltaic inverter system according to claim 7, wherein after the comprehensive analysis module receives an analysis result of the data analysis module affecting the power generated by the photovoltaic cell panel according to the surface covering of the photovoltaic cell panel, the comprehensive analysis module further analyzes the photovoltaic cell panel which does not conform to the power generated by the photovoltaic cell panel, and the analysis logic is as follows:
if the photovoltaic inversion system detects that the power generation power of the photovoltaic cell panel is lower than the power generation power of the standard photovoltaic cell panel, but the surface of the photovoltaic cell panel is slightly influenced by the cover, so that the cover does not influence the photovoltaic cell panel, the photovoltaic inversion system interrupts the corresponding photovoltaic inversion system, wherein the power generation power of the photovoltaic cell panel is lower than the power generation power of the standard photovoltaic cell panel due to the damage of the photovoltaic cell panel;
if the photovoltaic inversion system detects that the power generation power of the photovoltaic cell panel is lower than that of a standard photovoltaic cell panel, but the surface of the photovoltaic cell panel is greatly influenced by the cover, so that when the cover influences the photovoltaic cell panel, the cover influences the photovoltaic cell panel to generate power lower than that of the standard photovoltaic cell panel, or the photovoltaic cell panel is damaged at the same time to generate power lower than that of the standard photovoltaic cell panel and the cover influences the photovoltaic cell panel to generate power lower than that of the standard photovoltaic cell panel, an early warning prompt is sent out through the comprehensive analysis module to prompt an inspection staff to inspect the surface of the photovoltaic cell panel.
9. The interruption control method of the photovoltaic inverter system according to claim 8, wherein after the surface of the photovoltaic panel is inspected and cleaned, the influence coefficient of the surface covering of the photovoltaic panel is collected through the photovoltaic panel information collection module, so that the influence coefficient of the surface covering of the photovoltaic panel is lower than a threshold value set by the influence coefficient, the influence of the covering on the photovoltaic panel is eliminated, after the influence of the covering on the photovoltaic panel is eliminated, if the condition that the power generation power of the photovoltaic panel is lower than the standard photovoltaic panel power generation power exists in the photovoltaic panel, the condition that the damage of the photovoltaic panel occurs to cause the power generation power to be lower than the standard photovoltaic panel and the influence of the covering to cause the power generation power of the photovoltaic panel to be lower than the standard photovoltaic panel are indicated at the same time, and the photovoltaic inverter system interrupts the corresponding photovoltaic inverter system;
after eliminating the influence of the cover on the photovoltaic cell panel, if the condition that the generated power of the photovoltaic cell panel is lower than the generated power of the standard photovoltaic cell panel does not exist, the condition shows that the generated power of the photovoltaic cell panel is lower than the generated power of the standard photovoltaic cell panel due to the influence of the cover, the photovoltaic inverter system does not interrupt the corresponding photovoltaic inverter system, and after the surface of the photovoltaic cell panel is checked and cleaned, the normal use of the photovoltaic inverter system is continuously maintained.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117895571A (en) * | 2024-03-14 | 2024-04-16 | 中国公路工程咨询集团有限公司 | Interruption control method for photovoltaic inverter system |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104734632A (en) * | 2013-12-24 | 2015-06-24 | 珠海格力电器股份有限公司 | Cleanliness diagnosis method and device for photovoltaic cell panel |
| CN107171639A (en) * | 2017-05-31 | 2017-09-15 | 江苏普世祥光电技术有限公司 | A kind of fault monitoring method of photovoltaic system |
| CN109271736A (en) * | 2018-10-12 | 2019-01-25 | 阳光电源股份有限公司 | The fault type judges method and device of photovoltaic module |
| KR102043340B1 (en) * | 2019-06-17 | 2019-11-12 | 한양전공주식회사 | Monitoring system for grid-connected photovoltaic system |
| KR102051402B1 (en) * | 2019-04-29 | 2019-12-03 | (주)대은 | A Diagnosis Syetem of Photovoltaic Generation Based on IoT |
| CN112272007A (en) * | 2020-10-30 | 2021-01-26 | 合肥阳光新能源科技有限公司 | Method and device for determining influence of shelter on photovoltaic module |
| CN113657789A (en) * | 2021-08-24 | 2021-11-16 | 国网（天津）综合能源服务有限公司 | Distributed photovoltaic roof resource multi-dimensional evaluation method |
| CN115081735A (en) * | 2022-07-17 | 2022-09-20 | 浙江浙能能源服务有限公司 | Photovoltaic power prediction method and system based on wavelet neural network |
| CN115130774A (en) * | 2022-07-12 | 2022-09-30 | 珠海格力电器股份有限公司 | Maintenance method, device and equipment of photovoltaic system and storage medium |
| CN115225032A (en) * | 2022-07-19 | 2022-10-21 | 中国华电科工集团有限公司 | Distributed photovoltaic operation and maintenance system and operation and maintenance method |
-
2023
- 2023-04-13 CN CN202310391885.1A patent/CN116111728B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104734632A (en) * | 2013-12-24 | 2015-06-24 | 珠海格力电器股份有限公司 | Cleanliness diagnosis method and device for photovoltaic cell panel |
| CN107171639A (en) * | 2017-05-31 | 2017-09-15 | 江苏普世祥光电技术有限公司 | A kind of fault monitoring method of photovoltaic system |
| CN109271736A (en) * | 2018-10-12 | 2019-01-25 | 阳光电源股份有限公司 | The fault type judges method and device of photovoltaic module |
| KR102051402B1 (en) * | 2019-04-29 | 2019-12-03 | (주)대은 | A Diagnosis Syetem of Photovoltaic Generation Based on IoT |
| KR102043340B1 (en) * | 2019-06-17 | 2019-11-12 | 한양전공주식회사 | Monitoring system for grid-connected photovoltaic system |
| CN112272007A (en) * | 2020-10-30 | 2021-01-26 | 合肥阳光新能源科技有限公司 | Method and device for determining influence of shelter on photovoltaic module |
| CN113657789A (en) * | 2021-08-24 | 2021-11-16 | 国网（天津）综合能源服务有限公司 | Distributed photovoltaic roof resource multi-dimensional evaluation method |
| CN115130774A (en) * | 2022-07-12 | 2022-09-30 | 珠海格力电器股份有限公司 | Maintenance method, device and equipment of photovoltaic system and storage medium |
| CN115081735A (en) * | 2022-07-17 | 2022-09-20 | 浙江浙能能源服务有限公司 | Photovoltaic power prediction method and system based on wavelet neural network |
| CN115225032A (en) * | 2022-07-19 | 2022-10-21 | 中国华电科工集团有限公司 | Distributed photovoltaic operation and maintenance system and operation and maintenance method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117895571A (en) * | 2024-03-14 | 2024-04-16 | 中国公路工程咨询集团有限公司 | Interruption control method for photovoltaic inverter system |
| CN117895571B (en) * | 2024-03-14 | 2024-05-17 | 中国公路工程咨询集团有限公司 | Interruption control method for photovoltaic inverter system |
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|---|---|
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