CN112039436A - Method for analyzing power station state by integrating photovoltaic inverter working state and real-time data - Google Patents
Method for analyzing power station state by integrating photovoltaic inverter working state and real-time data Download PDFInfo
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- CN112039436A CN112039436A CN202010917930.9A CN202010917930A CN112039436A CN 112039436 A CN112039436 A CN 112039436A CN 202010917930 A CN202010917930 A CN 202010917930A CN 112039436 A CN112039436 A CN 112039436A
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000007405 data analysis Methods 0.000 claims 2
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000002159 abnormal effect Effects 0.000 abstract description 3
- 238000012544 monitoring process Methods 0.000 description 4
- 238000010248 power generation Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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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
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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
- H02J13/00001—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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- 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
- 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
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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
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
-
- 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
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
- H02S40/32—Electrical components comprising DC/AC inverter means associated with the PV module itself, e.g. AC modules
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- 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)
- Human Computer Interaction (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a method for analyzing the state of a power station by integrating the working state of a photovoltaic inverter and real-time data, which is characterized by comprising the following steps of: the method comprises the following steps: s1, setting a timing task: the system defaults to execute once in 10 minutes; s2, counting the equipment state: counting all the devices, and counting various states of the devices, including: (1) the device comprises (1) total number of devices, (2) normal number of devices, (3) failure number of devices, (4) alarm number of devices and (5) offline number of devices. The technical problem to be solved by the invention is to integrate the working state and the real-time power of the photovoltaic inverter, further analyze and judge the real-time state of the power station, timely warn abnormal states, facilitate timely maintenance of operation and maintenance personnel, ensure normal operation of the power station and reduce unnecessary loss.
Description
Technical Field
The invention belongs to the technical field of photovoltaic power generation, and particularly relates to a method for analyzing the state of a power station by integrating the working state of a photovoltaic inverter and real-time data.
Background
With the development of the green energy industry, under the strong support of the state, the photovoltaic power generation industry is developed at a rapid speed, so that the effects of energy conservation, emission reduction and environmental protection are achieved, and the photovoltaic power generation industry is also used as a production tool to create benefits for users. Therefore, the stability of the operation of the photovoltaic power station is ensured, the potential abnormity of the photovoltaic power station is found as early as possible, the abnormal time is reduced, the power generation amount of the photovoltaic power station is increased, the income is further increased for a user, and the basic function requirement of the user on the monitoring platform is also met. Therefore, how to judge the abnormal state of the power station more intelligently becomes the basic requirement of monitoring intellectualization of the photovoltaic power station.
At present, each photovoltaic inverter manufacturer or a third party manufacturer adopts external acquisition equipment to read inverter event information, judges the state of the equipment according to the event information and further judges the state of a power station. The method mainly depends on the fault event of the inverter, and the non-fault abnormality cannot be sensed, such as poor installation environment signals or poor network, and the acquisition equipment cannot upload data in time, so that the state of the power station cannot be updated in real time.
Meanwhile, a plurality of inverters often exist in the same power station, and when a plurality of devices break down simultaneously, how to judge the priority of the failure is also a problem to judge the state of the power station.
At present, other platforms still cannot well analyze and prejudge aiming at the problems of poor signal, simultaneous failure of a plurality of devices and the like in a photovoltaic power station, and the state of the power station cannot be mastered in time, so that data statistics and operation and maintenance of the power station are influenced, and unnecessary loss risks exist.
For the problems in the related art, no effective solution is provided at present, and therefore a method for analyzing the state of the power station by integrating the working state of the photovoltaic inverter and real-time data is provided.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a method for analyzing the state of a power station by integrating the working state of a photovoltaic inverter and real-time data, and solves the problems in the background art.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: the method for analyzing the state of the power station by integrating the working state of the photovoltaic inverter and real-time data comprises the following steps:
s1, setting a timing task: the system defaults to execute once in 10 minutes;
s2, counting the equipment state: counting all the devices, and counting various states of the devices, including: (1) the device comprises (1) total number of devices, (2) normal number of devices, (3) failure number of devices, (4) alarm number of devices and (5) offline number of devices;
s3, secondary judgment of equipment state: in actual production, due to the problem of signals or networks, the situation of network disconnection of the equipment may be caused, and at this time, the platform end cannot receive event information and real-time data, so that the actual state of the equipment cannot be judged. At the moment, the state of the equipment is judged by the updating time of the real-time data;
s4, judging the state of the power station: and analyzing the equipment state according to a series of rules, and further judging the power station state.
Preferably, the judgment logic in S3 is that the data uploaded by the acquisition device is frequency, and the frequency can be set by the user through the platform end, and the frequency specifies how often the acquisition device uploads the real-time data. And the platform end acquires the updating time of the last piece of data by inquiring the database, compares the updating time with the current time to acquire a time difference, and if the time difference is 3 times greater than the frequency, judges that the equipment is in a disconnected state and places the equipment in an offline state.
Preferably, the determination of the power station state in S4 is as follows:
(1) if the total number is 0, setting the power station state as alarm;
(2) if the number of faults is not 0, setting the state of the power station as a fault;
(3) if the fault number is 0 and the alarm number is not 0, setting the power station state as alarm;
(4) if the total number is equal to the off-line number, setting the power station state as off-line;
(5) and if the total number is equal to the normal number, setting the power station to be normal.
(III) advantageous effects
Compared with the prior art, the invention provides a method for analyzing the state of a power station by integrating the working state of a photovoltaic inverter and real-time data, which has the following beneficial effects:
1. the method can be applied to a photovoltaic power station monitoring platform, and fault monitoring is achieved on the premise that hardware cost is not increased.
2. The inverter state is analyzed and prejudged from a data layer, so that the abnormality is found as early as possible, operation and maintenance personnel can maintain the inverter in time, and loss of users is reduced.
Drawings
FIG. 1 is a logic diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: the method for analyzing the state of the power station by integrating the working state of the photovoltaic inverter and real-time data comprises the following steps:
s1, setting a timing task: the system defaults to execute once in 10 minutes;
s2, counting the equipment state: counting all the devices, and counting various states of the devices, including: (1) the device comprises (1) total number of devices, (2) normal number of devices, (3) failure number of devices, (4) alarm number of devices and (5) offline number of devices;
s3, secondary judgment of equipment state: in actual production, due to the problem of signals or networks, the situation of network disconnection of the equipment may be caused, and at this time, the platform end cannot receive event information and real-time data, so that the actual state of the equipment cannot be judged. At the moment, the state of the equipment is judged by the updating time of the real-time data;
s4, judging the state of the power station: and analyzing the equipment state according to a series of rules, and further judging the power station state.
As shown in fig. 1, the judgment logic in S3 is that the data uploaded by the acquisition device is frequency, which can be set by the user through the platform end, and which specifies how often the acquisition device uploads real-time data. And the platform end acquires the updating time of the last piece of data by inquiring the database, compares the updating time with the current time to acquire a time difference, and if the time difference is 3 times greater than the frequency, judges that the equipment is in a disconnected state and places the equipment in an offline state.
As shown in fig. 1, the determination of the power station state in S4 is as follows:
(1) if the total number is 0, setting the power station state as alarm;
(2) if the number of faults is not 0, setting the state of the power station as a fault;
(3) if the fault number is 0 and the alarm number is not 0, setting the power station state as alarm;
(4) if the total number is equal to the off-line number, setting the power station state as off-line;
(5) and if the total number is equal to the normal number, setting the power station to be normal.
It is noted that, herein, relational terms such as first and second, and the like may be 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. Also, 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.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The method for analyzing the state of the power station by integrating the working state of the photovoltaic inverter and real-time data is characterized by comprising the following steps of: the method comprises the following steps:
s1, setting a timing task: the system defaults to execute once in 10 minutes;
s2, counting the equipment state: counting all the devices, and counting various states of the devices, including: (1) the device comprises (1) total number of devices, (2) normal number of devices, (3) failure number of devices, (4) alarm number of devices and (5) offline number of devices;
s3, secondary judgment of equipment state: in the actual production, the problem of signal or network may cause the situation of device disconnection, at this time, the platform end cannot receive the event information and real-time data, so the actual state of the device cannot be judged,
at the moment, the state of the equipment is judged by the updating time of the real-time data;
s4, judging the state of the power station: and analyzing the equipment state according to a series of rules, and further judging the power station state.
2. The method for integrating photovoltaic inverter operating state and real-time data analysis plant state of claim 1, wherein: the judgment logic in S3 is that the data uploaded by the acquisition device is frequent, the frequency can be set by the user through the platform end, the frequency specifies how often the real-time data is uploaded by the acquisition device, the platform end obtains the update time of the last data by querying the database, compares the update time with the current time to obtain a time difference, and if the time difference is greater than the frequency by 3 times, it is determined that the device is in a disconnected state, and the device is placed in an offline state.
3. The method for integrating photovoltaic inverter operating state and real-time data analysis plant state according to claim 1, wherein the determining of the plant state at S4 is as follows:
(1) if the total number is 0, setting the power station state as alarm;
(2) if the number of faults is not 0, setting the state of the power station as a fault;
(3) if the fault number is 0 and the alarm number is not 0, setting the power station state as alarm;
(4) if the total number is equal to the off-line number, setting the power station state as off-line;
(5) and if the total number is equal to the normal number, setting the power station to be normal.
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