CN112039436B - Method for analyzing power station state by integrating working state and real-time data of photovoltaic inverter - Google Patents
Method for analyzing power station state by integrating working state and real-time data of photovoltaic inverter Download PDFInfo
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- CN112039436B CN112039436B CN202010917930.9A CN202010917930A CN112039436B CN 112039436 B CN112039436 B CN 112039436B CN 202010917930 A CN202010917930 A CN 202010917930A CN 112039436 B CN112039436 B CN 112039436B
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 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
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004075 alteration 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
- 230000000694 effects Effects 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
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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]
-
- 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
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
-
- 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
-
- 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
Landscapes
- 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 and real-time data of a photovoltaic inverter, which is characterized in that: the method comprises the following steps: s1, setting a timing task: the system defaults to 10 minutes to execute once; s2, counting the state of equipment: counting all devices and counting various states of the devices, including: (1) total number of devices, (2) positive constant of devices, (3) number of device failures, (4) number of device alarms, and (5) number of device offline. The technical problem to be solved by the invention is to synthesize 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 early warn abnormal states, facilitate timely maintenance of operation and maintenance people, ensure the 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, the photovoltaic power generation industry is rapidly developed under the strong support of the nation, on one hand, the effects of energy conservation, emission reduction and environmental protection are achieved, and on the other hand, the photovoltaic power generation device is also used as a production tool, and benefits are created for users. Therefore, the operation stability of the photovoltaic power station is ensured, potential abnormality of the photovoltaic power station is found as soon as possible, the abnormal time is reduced, the power generation amount of the photovoltaic power station is increased, and further the income is increased for the user, which is also the basic functional requirement of the user for the monitoring platform. Therefore, how to more intelligently judge abnormal states of the power station becomes a basic requirement for intelligent monitoring of the photovoltaic power station.
At present, each photovoltaic inverter manufacturer or third party manufacturer adopts external acquisition equipment to read inverter event information, and judges the equipment state according to the event information, thereby judging the power station state. The method mainly depends on the fault event of the inverter, and can not sense non-fault type anomalies, such as poor installation environment signals or poor network, and the acquisition equipment can not upload data in time, so that the state of the power station can not be updated in real time.
Meanwhile, when a plurality of inverters exist in the same power station and a plurality of devices are simultaneously failed, how to judge the priority of the failure, and further judge the state of the power station, is also a problem.
The problems of signal difference problems, simultaneous faults of a plurality of devices and the like in the photovoltaic power station can still not be well analyzed and predicted by other current platforms, and the state of the power station can not be mastered in time, so that the data statistics and the operation and maintenance of the power station are affected, and the risk of unnecessary loss exists.
Aiming at the problems in the related art, no effective solution is proposed at present, and for this reason, a method for analyzing the state of a power station by combining the working state of a photovoltaic inverter and real-time data is proposed.
Disclosure of Invention
(one) solving the technical problems
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 above purpose, the present invention provides the following technical solutions: 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 10 minutes to execute once;
s2, counting the state of equipment: counting all devices and counting various states of the devices, including: (1) total number of devices, (2) positive device constant, (3) number of device failures, (4) number of device alarms, and (5) number of device offline;
s3, secondary judgment of equipment states: in actual production, because of the problem of signals or networks, the condition of network disconnection of equipment is possibly 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 this time, the update time of the real-time data is required to judge the state of the equipment;
s4, judging the state of the power station: and analyzing the equipment state according to a series of rules, and further judging the state of the power station.
Preferably, the determining logic in S3 is that the data uploaded by the collecting device has a frequency, and the frequency can be set by the user through the platform end, and the frequency specifies how often the collecting device uploads the real-time data. The platform end obtains the updating time of the last piece of data by inquiring the database, compares the time with the current time to obtain a time difference, and if the time difference is 3 times greater than the frequency, judges that the equipment is in a network disconnection state and can be put in an offline state.
Preferably, the determining power station state of S4 is as follows:
(1) The total number is 0, and the state of the power station is set as an alarm;
(2) If the fault number is not 0, setting the state of the power station as a fault;
(3) Setting the state of the power station as an alarm if the fault number is 0 and the alarm number is not 0;
(4) Setting the state of the power station as offline if the total number is equal to the offline number;
(5) And setting the power station as normal if the total number is equal to the normal number.
(III) beneficial 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 of not increasing hardware cost.
2. The inverter state is analyzed and pre-judged from the data layer, the abnormality is found as early as possible, the operation and maintenance personnel can maintain in time, and the loss is reduced for the user.
Drawings
Fig. 1 is a logical block diagram of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the 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 10 minutes to execute once;
s2, counting the state of equipment: counting all devices and counting various states of the devices, including: (1) total number of devices, (2) positive device constant, (3) number of device failures, (4) number of device alarms, and (5) number of device offline;
s3, secondary judgment of equipment states: in actual production, because of the problem of signals or networks, the condition of network disconnection of equipment is possibly 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 this time, the update time of the real-time data is required to judge the state of the equipment;
s4, judging the state of the power station: and analyzing the equipment state according to a series of rules, and further judging the state of the power station.
As shown in fig. 1, the determining logic in S3 is that the data uploaded by the collecting device has a frequency, and the frequency can be set by the user through the platform end, and the frequency specifies how often the collecting device uploads the real-time data. The platform end obtains the updating time of the last piece of data by inquiring the database, compares the time with the current time to obtain a time difference, and if the time difference is 3 times greater than the frequency, judges that the equipment is in a network disconnection state and can be put in an offline state.
As shown in fig. 1, the determined power station state of S4 is as follows:
(1) The total number is 0, and the state of the power station is set as an alarm;
(2) If the fault number is not 0, setting the state of the power station as a fault;
(3) Setting the state of the power station as an alarm if the fault number is 0 and the alarm number is not 0;
(4) Setting the state of the power station as offline if the total number is equal to the offline number;
(5) And setting the power station as normal if the total number is equal to the normal number.
It is noted that relational terms such as first and second, and the like 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.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, 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 understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (1)
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 10 minutes to execute once;
s2, counting the state of equipment: counting all devices and counting various states of the devices, including: (1) total number of devices, (2) positive device constant, (3) number of device failures, (4) number of device alarms, and (5) number of device offline;
s3, secondary judgment of equipment states: in actual production, because of the problem of signals or networks, the condition of network disconnection of equipment is possibly caused, and at the moment, the platform end cannot receive event information and real-time data, so that the actual state of the equipment cannot be judged, and at the moment, the state of the equipment is judged by the update time of the real-time data;
s4, judging the state of the power station: analyzing the equipment state according to a series of rules, and further judging the state of the power station;
the judgment logic in the step S3 is that the data uploaded by the acquisition equipment has a frequency, the frequency can be set by a user through a platform end, the frequency prescribes how long the acquisition equipment uploads real-time data, the platform end obtains the updating time of the last piece of data by inquiring a database, the time is compared with the current time to obtain a time difference, if the time difference is 3 times greater than the frequency, the equipment is judged to be in a disconnected network state, and the equipment is put into an offline state;
the judging power station state of the S4 is as follows:
(1) The total number is 0, and the state of the power station is set as an alarm;
(2) If the fault number is not 0, setting the state of the power station as a fault;
(3) Setting the state of the power station as an alarm if the fault number is 0 and the alarm number is not 0;
(4) Setting the state of the power station as offline if the total number is equal to the offline number;
(5) And setting the power station as normal if the total number is equal to the normal number.
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| CN202010917930.9A CN112039436B (en) | 2020-09-03 | 2020-09-03 | Method for analyzing power station state by integrating working state and real-time data of photovoltaic inverter |
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| CN112039436B true CN112039436B (en) | 2023-11-17 |
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