CN117318616A - Photovoltaic early warning method, system, storage medium and electronic equipment - Google Patents

Photovoltaic early warning method, system, storage medium and electronic equipment Download PDF

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Publication number
CN117318616A
CN117318616A CN202311296000.6A CN202311296000A CN117318616A CN 117318616 A CN117318616 A CN 117318616A CN 202311296000 A CN202311296000 A CN 202311296000A CN 117318616 A CN117318616 A CN 117318616A
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China
Prior art keywords
signal
target
photovoltaic module
fluctuation
change
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CN202311296000.6A
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Chinese (zh)
Inventor
李进龙
刘万飞
罗建
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Tianyu Zhengqing Technology Co ltd
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Tianyu Zhengqing Technology Co ltd
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Priority to CN202311296000.6A priority Critical patent/CN117318616A/en
Publication of CN117318616A publication Critical patent/CN117318616A/en
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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
    • 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
    • H02J13/00001—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]
    • 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
    • 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
    • H02J13/00006—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 information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00016—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 information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
    • 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
    • H02J13/00006—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 information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00022—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 information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
    • 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
    • H02J13/00006—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 information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00022—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 information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
    • H02J13/00026—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 information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission involving a local wireless network, e.g. Wi-Fi, ZigBee or Bluetooth
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Human Computer Interaction (AREA)
  • Photovoltaic Devices (AREA)

Abstract

The application provides a photovoltaic early warning method, a photovoltaic early warning system, a storage medium and electronic equipment, and relates to the field of photovoltaic monitoring. The method comprises the following steps: when fluctuation abnormality of a first signal acquired by first equipment is monitored, determining a target photovoltaic module corresponding to the first signal, wherein the fluctuation abnormality is that the amplitude fluctuation of the first signal exceeds a preset first threshold; controlling a second device to acquire a second signal in a target area, wherein the target area is a surrounding area taking a target photovoltaic module as a center; if the second signal is abnormal in change, outputting a corresponding early warning signal based on the fluctuation abnormality of the first signal, wherein the abnormal change is that the amplitude change of the second signal exceeds a set second threshold value. The probability of false alarm and false alarm caused by fluctuation of the first equipment during signal acquisition can be reduced, and therefore the early warning accuracy of the photovoltaic power generation system is improved.

Description

Photovoltaic early warning method, system, storage medium and electronic equipment
Technical Field
The application relates to the field of photovoltaic monitoring, in particular to a photovoltaic early warning method, a system, a storage medium and electronic equipment.
Background
With the development of the photovoltaic industry, the operation and maintenance of the photovoltaic power generation system also tend to be automatic and intelligent, and the problem of safe operation of the photovoltaic power generation system also becomes an important research direction. The health monitoring technology of the photovoltaic power generation system is researched, the operation characteristics and the state of the photovoltaic power generation system can be accurately judged, and the safety performance of the photovoltaic power generation system is reflected.
In the related art, according to the safety early warning method for the photovoltaic power generation system, whether the operation of the photovoltaic power generation system is problematic is judged by collecting voltage signals, current signals, temperature signals and the like of the photovoltaic components in the whole photovoltaic array, and then an early warning result is output according to signal abnormality.
However, in the safety early warning method, the sensor for collecting signals is affected, the network is unstable and the like, so that the signal collection is unstable, the difficulty of subsequent signal processing and early warning judgment is increased, and the early warning of a photovoltaic power generation system is inaccurate.
Disclosure of Invention
The application provides a photovoltaic early warning method, a system, a storage medium and electronic equipment, which can determine whether the signal acquisition process is interfered or caused by faults when the signal fluctuates, can avoid false alarm and improve the early warning accuracy of a photovoltaic power generation system.
In a first aspect, the present application provides a photovoltaic pre-warning method, the method comprising:
when fluctuation abnormality of a first signal acquired by first equipment is monitored, determining a target photovoltaic module corresponding to the first signal, wherein the fluctuation abnormality is that the amplitude fluctuation of the first signal exceeds a preset first threshold;
controlling a second device to acquire a second signal in a target area, wherein the target area is a surrounding area taking the target photovoltaic module as a center;
if the second signal is abnormal in change, outputting a corresponding early warning signal based on the fluctuation abnormality of the first signal, wherein the abnormal change is that the amplitude change of the second signal exceeds a second threshold value.
Through adopting above-mentioned technical scheme, when the fluctuation of monitoring first signal is unusual, confirm whether the fluctuation of first signal is noise interference through judging whether the second signal that second equipment gathered appears changing unusual, can reduce the probability that the fluctuation leads to's false alarm and false alarm appear in first equipment when signal acquisition to improve photovoltaic power generation system early warning's accuracy.
Optionally, the second device includes a third device and a fourth device, the second signal includes a third signal and a fourth signal, and the controlling the second device to collect the second signal in the target area includes:
controlling the third equipment to acquire a third signal of the target photovoltaic module;
and controlling the fourth equipment to acquire fourth signals of other photovoltaic modules except the target photovoltaic module in the target area, wherein the fourth signals are signals with the same type as the first signals.
By adopting the technical scheme, the third signals of the third equipment for simultaneously monitoring the target photovoltaic module and the same type signals of other photovoltaic modules in a certain surrounding area are respectively acquired, so that the accuracy of judging the variation abnormality is improved.
Optionally, the third device is a third association device, and the controlling the third device to collect a third signal of the target photovoltaic module includes:
and controlling the third association equipment to acquire a third association signal of the target photovoltaic module, wherein the third association signal is a signal of the target photovoltaic module with the same type as the first signal.
By adopting the technical scheme, a plurality of third association devices possibly exist in the same parameter of the monitoring target photovoltaic module, and the accuracy of judging the reason for the abnormality of the fluctuation of the first signal can be improved by collecting a plurality of third association signals.
Optionally, the third device is a third non-associated device, and the controlling the third device to collect a third signal of the target photovoltaic module includes:
and controlling the third non-associated equipment to acquire a third non-associated signal of the target photovoltaic module, wherein the third non-associated signal is a signal of the target photovoltaic module with a different type from the first signal.
By adopting the technical scheme, when a problem occurs in a certain parameter of the target photovoltaic module, other parameters of the target photovoltaic module can also change correspondingly, so that the third uncorrelated signal of the target photovoltaic module is acquired, and the accuracy of the subsequent judgment on the abnormal change can be improved.
Optionally, after the controlling the third non-associated device to collect the third non-associated signal in the target area, the method further includes:
acquiring a third threshold value of the third non-associated signal, wherein the third threshold value is a threshold value for judging whether the third non-associated signal is abnormal or not;
mapping the third non-associated signal to a second signal and mapping the third threshold to a second threshold.
By adopting the technical scheme, for judging the third non-associated signal, as the third non-associated signal and the first signal are of different types and have different sizes and judging thresholds, the efficiency of the subsequent judgment on the variation abnormality can be improved by mapping the third non-associated threshold and the third threshold.
Optionally, before determining the target photovoltaic module corresponding to the first signal when the fluctuation abnormality of the first signal acquired by the first device is detected, the method further includes:
acquiring a historical change curve of a first signal, wherein the historical change curve is a curve of the change of the signal amplitude of the first signal along with time;
and taking the signal amplitude corresponding to the current moment in the historical change curve as a reference value, and determining the value of the first threshold value.
By adopting the technical scheme, the data in the parameters of the target photovoltaic module monitored by the first signal can be changed, so that the first threshold value needs to be adjusted to improve the accuracy of fluctuation anomaly monitoring.
Optionally, after the controlling the second device to collect the second signal in the target area, the method further includes:
judging whether the second signal has abnormal change or not;
and if the second signal is not abnormal in change, determining that the fluctuation of the first signal is abnormal as normal interference.
By adopting the technical scheme, when the second signal is judged to not have variation abnormality, the generation cause of fluctuation abnormality can be determined to be caused by the occurrence of the problem of the first equipment, and the cause of fluctuation abnormality is not caused by the occurrence of the problem of the target photovoltaic module.
In a second aspect, the present application provides a photovoltaic pre-warning system, wherein the system comprises:
the first signal monitoring module is used for determining a target photovoltaic module corresponding to a first signal when detecting that the fluctuation of the first signal acquired by first equipment is abnormal, wherein the fluctuation abnormality is that the fluctuation amplitude of the first signal exceeds a preset first threshold value;
the second signal acquisition module is used for controlling second equipment to acquire a second signal in a target area, wherein the target area is a surrounding area taking the target photovoltaic module as a center;
and the second signal judging module is used for outputting a corresponding early warning signal based on the fluctuation abnormality of the first signal if the second signal is abnormal in change, wherein the abnormal change is that the amplitude change of the second signal exceeds a second threshold value.
In a third aspect, the present application provides a computer storage medium storing a plurality of instructions adapted to be loaded by a processor and to perform the method of any one of the preceding claims.
In a fourth aspect, the present application provides an electronic device comprising a processor, a memory for storing instructions, and a transceiver for communicating with other devices, the processor for executing the instructions stored in the memory to cause the electronic device to perform any one of the methods described above.
In summary, one or more technical solutions provided in the embodiments of the present application have the following technical effects or advantages:
when the fluctuation abnormality of the first signal is monitored, whether the fluctuation of the first signal is noise interference is determined by judging whether the second signal acquired by the second equipment is abnormal or not, and the probability of false alarm and false alarm caused by the fluctuation of the first equipment in the signal acquisition can be reduced, so that the early warning accuracy of the photovoltaic power generation system is improved.
Drawings
Fig. 1 is a schematic flow chart of a photovoltaic early warning method provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a photovoltaic early warning system according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of an electronic device according to the disclosure in an embodiment of the present application.
Reference numerals illustrate: 10. a first signal monitoring module; 20. a second signal acquisition module; 30. a second signal judgment module; 300. an electronic device; 301. a processor; 302. a communication bus; 303. a user interface; 304. a network interface; 305. a memory.
Description of the embodiments
In order to make those skilled in the art better understand the technical solutions in the present specification, the technical solutions in the embodiments of the present specification will be clearly and completely described below with reference to the drawings in the embodiments of the present specification, and it is obvious that the described embodiments are only some embodiments of the present application, but not all embodiments.
In the description of embodiments of the present application, words such as "for example" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described herein as "such as" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "or" for example "is intended to present related concepts in a concrete fashion.
In the description of the embodiments of the present application, the term "plurality" means two or more. For example, a plurality of systems means two or more systems, and a plurality of screen terminals means two or more screen terminals. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating an indicated technical feature. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.
The technical scheme provided by the application can be applied to a photovoltaic early warning system for monitoring and early warning in a photovoltaic power generation system. The service object of the photovoltaic early warning system is a photovoltaic power station, the construction address of the photovoltaic power station is mostly outdoor with rich light resources, and the outdoor environment has certain interference to the sensor of the photovoltaic early warning system, so that the condition of signal fluctuation often occurs.
Based on the above problem, the embodiment of the application determines whether the fluctuation of the first signal is noise interference by judging whether the fluctuation of the second signal acquired by the second equipment is abnormal when the fluctuation of the first signal is abnormal, so that the early warning false alarm caused by the fluctuation of the first equipment in the signal acquisition process can be avoided, and the early warning accuracy of the photovoltaic power generation system can be improved.
Referring to fig. 1, a flow chart of a photovoltaic early warning method provided in an embodiment of the present application may be implemented by a computer program, may be implemented by a single-chip microcomputer, or may be run on a photovoltaic early warning system based on von neumann system. The computer program may be integrated in the application or may run as a stand-alone tool class application. In the embodiment of the application, a photovoltaic early warning system is taken as an example, and specific steps of a photovoltaic early warning method are described in detail.
S1, when fluctuation abnormality of a first signal acquired by first equipment is monitored, determining a target photovoltaic module corresponding to the first signal, wherein the fluctuation abnormality is that amplitude fluctuation of the first signal exceeds a set first threshold value.
The first equipment is equipment for monitoring a specific parameter of a target photovoltaic module in real time, the collected first signal of the specific parameter is fed back to the photovoltaic early warning system, and the target photovoltaic module refers to the photovoltaic module corresponding to the first signal with abnormal fluctuation in the application. For example, the first device is a temperature sensor installed below the target photovoltaic module bracket, and the first signal is an acquired real-time temperature signal.
The fluctuation anomaly is an anomaly when the fluctuation amplitude of the first signal exceeds a first threshold, i.e., the variation amplitude of the first signal is large.
The change condition of each signal is monitored in real time, the signal with fluctuation abnormality is defined as a first signal, and the position or number of the first equipment can be determined in a mode of tracing the source of the signal, so that the information such as the component number, the component position and the like of the target photovoltaic component corresponding to the first signal is determined according to the first equipment.
In one implementation, a historical variation curve of the first signal is obtained, wherein the historical variation curve is a curve of signal amplitude of the first signal changing with time; and taking the signal amplitude corresponding to the current moment in the historical change curve as a reference value, and determining the value of the first threshold value.
The historical change curve of the first signal is a curve of the signal amplitude of the first signal changing with time in the previous day or the current period, for example, the historical change curve may be a curve obtained by fitting the previous days before the current time, or may be a curve of the previous day before the current time, and reflects the reference quantity of the signal amplitude at the current time.
And on the basis of the signal amplitude corresponding to the current moment in the historical change curve, correspondingly adjusting the value of the first threshold value. For example, when the amplitude of the signal at the current time in the historical change curve is 25 ℃, the first threshold value may be determined to be 30 ℃, and when the amplitude of the temperature signal of a certain photovoltaic module fluctuates by more than 30 ℃, the signal may be determined to be the first signal with the fluctuation abnormality.
S2, controlling a second device to acquire a second signal in a target area, wherein the target area is a surrounding area taking the target photovoltaic module as the center.
The second device is a device capable of collecting a target area around the target photovoltaic module, and the second signal is a real-time signal collected by the second device.
In the step S2, step S21 and step S22 are specifically further included.
S21, controlling a third device to acquire a third signal of the target photovoltaic module.
The third signal is a parameter signal collected by taking the target photovoltaic module as a target, and parameters collected by the third device can be the same as or not the first device, for example, the first device is a distributed optical fiber temperature measuring device, and is arranged below a backboard of the target photovoltaic module, and the third device can be a thermopile temperature sensor arranged inside the photovoltaic module or a voltage detection device for detecting the voltage of the target photovoltaic module.
The specific embodiment of S21 further comprises step 211 and/or step S212.
S211, controlling third association equipment to acquire a third association signal of the target photovoltaic module, wherein the third association signal is a signal of the target photovoltaic module with the same type as the first signal.
The third association signal and the first signal are signals for detecting the same target parameter of the target photovoltaic module, and the same target parameter has multiple detection modes under the general condition, and the reason of fluctuation abnormality of the first signal can be reflected most intuitively by the same third association sequence of the detection objects.
S212, controlling third non-associated equipment to acquire third non-associated signals of the target photovoltaic modules, wherein the third non-associated signals are signals of the target photovoltaic modules with different types from the first signals.
The detection target of the third non-associated device is a target photovoltaic module, and the detection target is a parameter of a different type from the first signal, for example, when the temperature of the target photovoltaic module increases, the reason may be that the illumination intensity increases, and the output current increases when the illumination intensity increases, and the output current signal is the third non-associated signal, so that the detection target photovoltaic module third non-associated signal can be used as a credential for judging whether the first signal fluctuation abnormality is caused by the abnormality of the target photovoltaic module.
In one implementation manner, a third threshold value of the third non-associated signal is obtained, wherein the third threshold value is a threshold value for judging whether the third non-associated signal is abnormal or not; the third non-correlated signal is mapped to the second signal and the third threshold is mapped to the second threshold.
For the judgment of the third non-associated signal, the third associated signal and the fourth signal are the same type as the first signal, and the second threshold value can be adopted for judgment, so that the calculation amount of the subsequent abnormal change judgment can be reduced by mapping the third non-associated signal and the third threshold value, and the calculation efficiency is improved.
S22, controlling fourth equipment to collect fourth signals of other photovoltaic modules except the target photovoltaic module in the target area, wherein the fourth signals are signals of the same type as the first signals.
In this embodiment of the present application, the fourth device may be a sensor of the same type as the first device, or may be a sensor of a different signal from the first device, which only needs to acquire the same type of parameter as the object, so as to ensure the acquisition processing rate and reliability, and the fourth device may be determined as a sensor of the same type. The fourth signal is a signal of a photovoltaic module other than the target photovoltaic module in the target area with the target photovoltaic module as the center, and the fourth signal is the same as the first signal in type, for example, the first signal is an output voltage signal for detecting the target photovoltaic module, and the fourth signal is an output voltage signal of another photovoltaic module in the target area.
And S3, if the second signal is abnormal in change, outputting a corresponding early warning signal based on the fluctuation abnormality of the first signal, wherein the abnormal change is that the amplitude change of the second signal exceeds a set second threshold value.
Judging whether the amplitude change of the second signal exceeds a second threshold value or not, if the amplitude change of the second signal is abnormal, indicating that the target photovoltaic module has a problem or a fault, and carrying out early warning to avoid larger loss.
In one implementation, determining whether a change anomaly has occurred in the second signal; if the second signal is not abnormal in change, the fluctuation abnormality of the first signal is determined as normal interference.
When various conditions in the second signal are all generated, the fluctuation abnormality of the first signal can be determined to be caused by interference in the signal acquisition process, an early warning signal is not required to be output, the false alarm probability can be reduced, and the reliability of the system is improved.
The following are system embodiments of the present application that may be used to perform method embodiments of the present application. For details not disclosed in the system embodiments of the present application, please refer to the method embodiments of the present application.
Referring to fig. 2, a schematic structural diagram of a photovoltaic early warning system according to an exemplary embodiment of the present application is shown. The system may be implemented as all or part of a system by software, hardware, or a combination of both. The system comprises a first signal monitoring module 10, a second signal acquisition module 20 and a second signal judgment module 30.
The first signal monitoring module 10 is configured to determine, when detecting that a fluctuation of a first signal collected by the first device is abnormal, that a fluctuation amplitude of the first signal exceeds a set first threshold;
the second signal acquisition module 20 is configured to control the second device to acquire a second signal in a target area, where the target area is a surrounding area centered on the target photovoltaic module;
the second signal judging module 30 is configured to output a corresponding early warning signal based on the fluctuation anomaly of the first signal if the second signal has a variation anomaly, where the variation anomaly is that the amplitude variation of the second signal exceeds a set second threshold.
On the basis of the above embodiment, as an alternative embodiment, the first signal monitoring module 10 further includes: a first threshold determining unit in which:
the first threshold determining unit is used for obtaining a historical change curve of the first signal, wherein the historical change curve is a curve of the change of the signal amplitude of the first signal along with time; and taking the signal amplitude corresponding to the current moment in the historical change curve as a reference value, and determining the value of the first threshold value.
On the basis of the above embodiment, as an alternative embodiment, the second signal acquisition module 20 further includes: the device comprises a second device refinement unit, a third associated signal acquisition unit, a third non-associated signal acquisition unit and a third threshold mapping unit, wherein:
the second equipment refining unit is used for controlling a third equipment to acquire a third signal of the target photovoltaic module; and controlling fourth equipment to acquire fourth signals of other photovoltaic modules except the target photovoltaic module in the target area, wherein the fourth signals are signals of the same type as the first signals.
The third correlation signal acquisition unit is used for controlling third correlation equipment to acquire a third correlation signal of the target photovoltaic module, wherein the third correlation signal is a signal of the target photovoltaic module with the same type as the first signal.
The third non-associated signal acquisition unit is used for controlling the third non-associated equipment to acquire a third non-associated signal of the target photovoltaic module, wherein the third non-associated signal is a signal of the target photovoltaic module with a different type from the first signal.
The third threshold mapping unit is used for acquiring a third threshold of the third non-associated signal, wherein the third threshold is a threshold for judging whether the third non-associated signal is abnormal or not; the third non-correlated signal is mapped to the second signal and the third threshold is mapped to the second threshold.
On the basis of the above embodiment, as an alternative embodiment, the second signal determining module 30 further includes: a normal interference unit, wherein:
the normal interference unit is used for judging whether the second signal is abnormal in change or not; if the second signal is not abnormal in change, the fluctuation abnormality of the first signal is determined as normal interference.
It should be noted that: in the system provided in the above embodiment, when implementing the functions thereof, only the division of the above functional modules is used as an example, in practical application, the above functional allocation may be implemented by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules, so as to implement all or part of the functions described above. In addition, the system and method embodiments provided in the foregoing embodiments belong to the same concept, and specific implementation processes of the system and method embodiments are detailed in the method embodiments, which are not repeated herein.
The embodiment of the present application further provides a computer storage medium, where the computer storage medium may store a plurality of instructions, where the instructions are suitable for being loaded by a processor and executed by the processor, and the specific execution process may refer to the specific description of the embodiment shown in fig. 1, and will not be described herein.
The application also discloses electronic equipment. Referring to fig. 3, fig. 3 is a schematic structural diagram of an electronic device according to the disclosure in an embodiment of the present application. The electronic device 300 may include: at least one processor 301, at least one network interface 304, a user interface 303, a memory 305, at least one communication bus 302.
Wherein the communication bus 302 is used to enable connected communication between these components.
The user interface 303 may include a Display screen (Display), a Camera (Camera), and the optional user interface 303 may further include a standard wired interface, and a wireless interface.
The network interface 304 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface), among others.
Wherein the processor 301 may include one or more processing cores. The processor 301 utilizes various interfaces and lines to connect various portions of the overall server, perform various functions of the server and process data by executing or executing instructions, programs, code sets, or instruction sets stored in the memory 305, and invoking data stored in the memory 305. Alternatively, the processor 301 may be implemented in hardware in at least one of digital signal processing (Digital Signal Processing, DSP), field programmable gate array (Field-Programmable Gate Array, FPGA), programmable logic array (Programmable Logic Array, PLA). The processor 301 may integrate one or a combination of several of a central processing unit (Central Processing Unit, CPU), an image processor (Graphics Processing Unit, GPU), and a modem etc. The CPU mainly processes an operating system, a user interface, an application program and the like; the GPU is used for rendering and drawing the content required to be displayed by the display screen; the modem is used to handle wireless communications. It will be appreciated that the modem may not be integrated into the processor 301 and may be implemented by a single chip.
The Memory 305 may include a random access Memory (Random Access Memory, RAM) or a Read-Only Memory (Read-Only Memory). Optionally, the memory 305 includes a non-transitory computer readable medium (non-transitory computer-readable storage medium). Memory 305 may be used to store instructions, programs, code, sets of codes, or sets of instructions. The memory 305 may include a stored program area and a stored data area, wherein the stored program area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playing function, an image playing function, etc.), instructions for implementing the above-described respective method embodiments, etc.; the storage data area may store data or the like involved in the above respective method embodiments. Memory 305 may also optionally be at least one storage device located remotely from the aforementioned processor 301. Referring to fig. 3, an operating system, a network communication module, a user interface module, and a photovoltaic pre-warning application program may be included in the memory 305 as a computer storage medium.
In the electronic device 300 shown in fig. 3, the user interface 303 is mainly used for providing an input interface for a user, and acquiring data input by the user; and the processor 301 may be configured to invoke an application program in the memory 305 that stores a photovoltaic warning, which when executed by the one or more processors 301, causes the electronic device 300 to perform the method as in one or more of the embodiments described above. It should be noted that, for simplicity of description, the foregoing method embodiments are all expressed as a series of action combinations, but it should be understood by those skilled in the art that the present application is not limited by the order of actions described, as some steps may be performed in other order or simultaneously in accordance with the present application. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required in the present application.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
In the several embodiments provided herein, it should be understood that the disclosed apparatus may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, such as a division of units, merely a division of logic functions, and there may be additional divisions in actual implementation, such as 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 through some service interface, device or unit indirect coupling or communication connection, electrical or otherwise.
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 integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable memory. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a memory, 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 of the embodiments of the present application. And the aforementioned memory includes: various media capable of storing program codes, such as a U disk, a mobile hard disk, a magnetic disk or an optical disk.
The above are merely exemplary embodiments of the present disclosure and are not intended to limit the scope of the present disclosure. That is, equivalent changes and modifications are contemplated by the teachings of this disclosure, which fall within the scope of the present disclosure. Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure.
This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a scope and spirit of the disclosure being indicated by the claims.

Claims (10)

1. A photovoltaic pre-warning method, the method comprising:
when fluctuation abnormality of a first signal acquired by first equipment is monitored, determining a target photovoltaic module corresponding to the first signal, wherein the fluctuation abnormality is that the amplitude fluctuation of the first signal exceeds a preset first threshold;
controlling a second device to acquire a second signal in a target area, wherein the target area is a surrounding area taking the target photovoltaic module as a center;
if the second signal is abnormal in change, outputting a corresponding early warning signal based on the fluctuation abnormality of the first signal, wherein the abnormal change is that the amplitude change of the second signal exceeds a second threshold value.
2. The method of claim 1, wherein the second device comprises a third device and a fourth device, wherein the second signal comprises the third signal and the fourth signal, wherein the controlling the second device to acquire the second signal within the target area comprises:
controlling the third equipment to acquire a third signal of the target photovoltaic module;
and controlling the fourth equipment to acquire fourth signals of other photovoltaic modules except the target photovoltaic module in the target area, wherein the fourth signals are signals with the same type as the first signals.
3. The method of claim 2, wherein the third device is a third associated device, the controlling the third device to collect a third signal of the target photovoltaic module comprising:
and controlling the third association equipment to acquire a third association signal of the target photovoltaic module, wherein the third association signal is a signal of the target photovoltaic module with the same type as the first signal.
4. The method of claim 2, wherein the third device is a third non-associated device, the controlling the third device to collect a third signal of the target photovoltaic module comprising:
and controlling the third non-associated equipment to acquire a third non-associated signal of the target photovoltaic module, wherein the third non-associated signal is a signal of the target photovoltaic module with a different type from the first signal.
5. The method of claim 4, wherein the controlling the third non-associated device to collect the third non-associated signal within the target area further comprises:
acquiring a third threshold value of the third non-associated signal, wherein the third threshold value is a threshold value for judging whether the third non-associated signal is abnormal or not;
mapping the third non-associated signal to a second signal and mapping the third threshold to a second threshold.
6. The method according to claim 1, wherein when the fluctuation anomaly of the first signal collected by the first device is detected, before determining the target photovoltaic module corresponding to the first signal, the method further comprises:
acquiring a historical change curve of a first signal, wherein the historical change curve is a curve of the change of the signal amplitude of the first signal along with time;
and taking the signal amplitude corresponding to the current moment in the historical change curve as a reference value, and determining the value of the first threshold value.
7. The method of claim 1, wherein after the controlling the second device to acquire the second signal in the target area, further comprises:
judging whether the second signal has abnormal change or not;
and if the second signal is not abnormal in change, determining that the fluctuation of the first signal is abnormal as normal interference.
8. A photovoltaic pre-warning system, wherein the system comprises:
the first signal monitoring module (10) is used for determining a target photovoltaic module corresponding to a first signal when detecting that the fluctuation of the first signal acquired by first equipment is abnormal, wherein the fluctuation abnormality is that the fluctuation amplitude of the first signal exceeds a preset first threshold value;
the second signal acquisition module (20) is used for controlling second equipment to acquire a second signal in a target area, wherein the target area is a surrounding area taking the target photovoltaic module as a center;
and the second signal judging module (30) is used for outputting a corresponding early warning signal based on the fluctuation abnormality of the first signal if the second signal is abnormal in change, wherein the abnormal change is that the amplitude change of the second signal exceeds a second threshold value.
9. A computer storage medium storing a plurality of instructions adapted to be loaded by a processor and to perform the method of any one of claims 1 to 7.
10. An electronic device comprising a processor, a memory and a transceiver, the memory configured to store instructions, the transceiver configured to communicate with other devices, the processor configured to execute the instructions stored in the memory, to cause the electronic device to perform the method of any one of claims 1-7.
CN202311296000.6A 2023-10-09 2023-10-09 Photovoltaic early warning method, system, storage medium and electronic equipment Pending CN117318616A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104767485A (en) * 2015-04-28 2015-07-08 北京汉能光伏投资有限公司 Convergence detecting method and system for convergence box and solar power station
JP2016140121A (en) * 2015-01-26 2016-08-04 株式会社日立製作所 Storage battery system and photovoltaic power generation system including the same
CN112104326A (en) * 2020-09-17 2020-12-18 江西三川新能源有限公司 Power monitoring method and device for photovoltaic power generation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016140121A (en) * 2015-01-26 2016-08-04 株式会社日立製作所 Storage battery system and photovoltaic power generation system including the same
CN104767485A (en) * 2015-04-28 2015-07-08 北京汉能光伏投资有限公司 Convergence detecting method and system for convergence box and solar power station
CN112104326A (en) * 2020-09-17 2020-12-18 江西三川新能源有限公司 Power monitoring method and device for photovoltaic power generation

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