CN111833212B - Operation and maintenance management system and method for solar photovoltaic power station - Google Patents

Operation and maintenance management system and method for solar photovoltaic power station Download PDF

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CN111833212B
CN111833212B CN202010834107.1A CN202010834107A CN111833212B CN 111833212 B CN111833212 B CN 111833212B CN 202010834107 A CN202010834107 A CN 202010834107A CN 111833212 B CN111833212 B CN 111833212B
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field
light intensity
signal
wind speed
remote terminal
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CN111833212A (en
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朱见涛
郭振鹏
曹振武
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Zhong Tengwei Network Beijing Technology Co ltd
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Zhong Tengwei Network Beijing Technology Co ltd
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    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06QDATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
    • G06Q50/06Electricity, gas or water supply
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00Measuring or testing not otherwise provided for
    • G01D21/02Measuring two or more variables by means not covered by a single other subclass
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/20Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
    • G06F16/28Databases characterised by their database models, e.g. relational or object models
    • G06F16/284Relational databases
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06QDATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00Administration; Management
    • G06Q10/20Product repair or maintenance administration
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02SGENERATION OF ELECTRIC POWER BY CONVERSION OF INFRA-RED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S50/00Monitoring or testing of PV systems, e.g. load balancing or fault identification
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00Systems supporting electrical power generation, transmission or distribution
    • Y04S10/50Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications

Abstract

The invention provides a solar photovoltaic power station operation and maintenance management system and method. The operation and maintenance management system comprises a cloud storage control platform, a plurality of field solar panels and a field remote terminal unit. The field remote terminal unit sends the collected field light intensity signal and the field wind speed information to a field edge computing terminal; the field edge computing terminal preprocesses the field light intensity signal and the field wind speed information and then sends the processed field light intensity signal and the processed field wind speed information to the cloud storage control platform; the cloud storage control platform generates an operation and maintenance control signal by utilizing the geographic information database and the real-time weather database based on the preprocessed field signal and sends the operation and maintenance control signal to a field control device; and the field control device controls the state change of the field solar panel based on the operation and maintenance control signal. According to the technical scheme, the difference between the field parameter change of the photovoltaic power station and the data provided by the real-time cloud can be mastered in time, so that correct regulation and control parameters are selected for operation and maintenance control.

Description

Operation and maintenance management system and method for solar photovoltaic power station
Technical Field
The invention belongs to the technical field of photovoltaic power generation operation and maintenance, and particularly relates to an operation and maintenance management system and method for a solar photovoltaic power station.
Background
The new energy power generation represented by photovoltaic power generation is an effective measure for relieving energy crisis and preventing and treating environmental pollution due to the advantages of environmental friendliness, short construction period, low marginal power generation cost and the like, and meanwhile, large-scale photovoltaic power generation is an indispensable important component in the important strategy of the smart grid and the energy Internet which are established at present. With the progress of photovoltaic power generation technology and the improvement of economy, the development of photovoltaic power generation is enhanced at home and abroad. By the end of 2020, the installed capacity of solar power generation reaches 1.6 hundred million kilowatts, and the installed scale accounts for about 7% in a power supply structure, wherein photovoltaic power generation accounts for 94% of the total installed capacity of solar power generation. Major countries such as europe and the united states regard the large-scale application of photovoltaic as an important measure for energy transformation, and accelerate the progress of photovoltaic power generation technology and improve the integration capability of a photovoltaic system while corresponding policy support is maintained.
In order to improve the efficiency of photovoltaic power generation, Concentrated Photovoltaic (CPV) is becoming a hot point of research. CPV assemblies use relatively inexpensive concentrators to concentrate sunlight, thereby reducing the amount of expensive batteries. Therefore, the photoelectric conversion efficiency is greatly improved, and the power generation cost is reduced. However, as the concentration ratio is increased, the range of the solar ray receiving angle of the CPV module is smaller, and when the included angle between the solar ray and the normal line of the lens of the CPV module exceeds the receiving angle, the power generation efficiency of the CPV module is greatly reduced, and even the CPV module cannot generate power. Therefore, how to maximize the efficiency of photovoltaic power generation has become a hot research point in solar technology.
A feasible approach to solve this problem is to implement operation and maintenance control for automatic tracking of the sun. The automatic sun tracking is similar to a sunflower effect, and the deflection angle of the solar cell is correspondingly and automatically adjusted along with the change of the position of the sun, so that the sun is tracked. The automatic sun tracking technology can enable sunlight to vertically irradiate on the solar cell panel, and solar energy resources are better and more fully utilized. According to related researches, the flat-plate solar power generation array can improve the efficiency by 33% compared with the original fixed mode when the sun is automatically tracked. The control mode which is used for sun tracking is a photoelectric tracking mode, a view-sun movement track tracking mode and the combination of the two modes.
Photoelectric tracking is mainly performed by using a photosensitive sensor, such as a photodiode, for detecting the moving direction of the sun. Firstly, a photosensitive sensor is fixed on a sun tracking device according to a certain mode, when the position of the sun changes, the photosensitive sensor generates a deviation current, a photoelectric detection circuit amplifies and shapes the deviation current to output a deviation signal to a controller, and the controller receives the deviation signal and drives a motor to rotate, so that incident light of the sun vertically irradiates on a light receiving surface of the tracking device.
The sun-viewing movement track is tracked, the sunrise and sunset time of the local sun and the azimuth parameters of the sun of the tracking device are calculated according to a formula related to the sun celestial body operation rule in astronomy, and then the rotation of a motor is controlled through computer programming, so that the offset angle of the tracking device is changed.
The system and the method for tracking the solar azimuth of the photovoltaic power generation based on the hill-climbing algorithm, which are provided by the Chinese invention patent application with the application number of CN201910651187, utilize energy data collected by a light intensity sensor, and then analyze the data through the hill-climbing algorithm to accurately obtain a two-dimensional solar azimuth angle and an altitude angle of a solar motion track tracking mode. The hill climbing algorithm is added to accurately track the sun azimuth angle and the sun altitude angle in the sun movement track tracking mode, so that the accumulated error of the sun movement track tracking mode can be better eliminated, and the sun azimuth tracking precision is improved. Meanwhile, the whole automatic sun direction tracking device is divided into two working modes by using the light intensity sensor, so that the influence of weather change on the sun direction tracking stability can be well solved. Meanwhile, a relatively complex photoelectric tracking mode and a solar motion trail tracking mode are switched and are multiplexed, so that the system is more convenient and practical, and the loss of electric energy is saved to a certain extent.
The Chinese invention patent with the application number of CN200910111178 discloses an automatic tracking linkage mechanism of a solar concentrating photovoltaic power generation array, which comprises a solar concentrator array, an altitude angle linkage mechanism and an azimuth angle linkage mechanism; the solar concentrating photovoltaic power generation array drives all the concentrators of the whole array to obliquely track the solar altitude angle through a set of altitude angle driving mechanism, and drives all the concentrators of the whole array to rotate around a transmission shaft of the concentrators to track the solar azimuth angle through a set of azimuth angle driving mechanism. Because the whole solar concentrating photovoltaic power generation array only adopts one set of solar elevation angle driving mechanism and one set of solar azimuth angle driving mechanism, the two-dimensional linkage sun tracking operation of all the concentrators of the whole array can be realized, and the tracking cost is low. And because the solar altitude angle driving mechanism and the solar azimuth angle driving mechanism are completely formed by simple mechanical mechanisms, the solar azimuth angle driving mechanism is easy to manufacture, high in tracking precision and strong in strong wind resistance.
However, in one aspect, the apparent solar motion trajectory is timed, and light control is a closed-loop control system, which is an open-loop control system. The closed-loop tracking system can accurately track the sun, and the open-loop tracking system usually causes error accumulation in the tracking process; on the other hand, whether the control is light-operated or time-controlled, the control model or the control strategy can be enabled to be effective only by acquiring accurate relevant parameter data, and if the data acquired by the relevant parameter sensors on site is not accurate enough, the obtained control strategy cannot realize effective tracking control, and the power generation efficiency is reduced.
Disclosure of Invention
In order to solve the technical problems, the invention provides a system and a method for operation and maintenance management of a solar photovoltaic power station. The operation and maintenance management system comprises a cloud storage control platform, a plurality of field solar panels and a field remote terminal unit. The field remote terminal unit sends the collected field light intensity signal and the field wind speed information to a field edge computing terminal; the field edge computing terminal preprocesses the field light intensity signal and the field wind speed information and then sends the processed field light intensity signal and the processed field wind speed information to the cloud storage control platform; the cloud storage control platform generates an operation and maintenance control signal by utilizing the geographic information database and the real-time weather database based on the preprocessed field signal and sends the operation and maintenance control signal to a field control device; and the field control device controls the state change of the field solar panel based on the operation and maintenance control signal. The technical scheme of the invention can acquire accurate control parameters to the maximum extent, thereby realizing accurate automatic tracking control; meanwhile, the difference between the field parameter change of the photovoltaic power station and the data provided by the real-time cloud can be mastered in time, so that correct regulation and control parameters are selected for operation and maintenance control.
In a first aspect of the invention, an operation and maintenance management system for a solar photovoltaic power station is provided, wherein the operation and maintenance management system comprises a cloud storage control platform and a plurality of field solar panels, the cloud storage control platform is connected with a field edge computing terminal, and the field edge computing terminal is connected with the solar panels through a field control device;
as a first advantage of the present invention, the operation and maintenance management system further comprises a field remote terminal unit; the plurality of field remote terminal units are distributed around the field solar panel and are connected to the field control device through the field edge computing terminal; the field remote terminal units comprise photosensitive sensors and wind speed sensors, the field remote terminal units acquire field light intensity signals through the photosensitive sensors, and field wind speed information is acquired through the wind speed sensors;
as a second advantage of the present invention, the cloud storage control platform includes a geographic information database and a real-time weather database, and the geographic information database stores geographic position information of the solar panel;
the field remote terminal unit sends the collected field light intensity signal and the field wind speed information to the field edge computing terminal;
the field edge computing terminal preprocesses the field light intensity signal and the field wind speed information and then sends the processed field light intensity signal and the processed field wind speed information to the cloud storage control platform;
as a third advantage of the present invention, the cloud storage control platform generates an operation and maintenance control signal based on the preprocessed field signal by using the geographic information database and the real-time weather database, and sends the operation and maintenance control signal to the field control device; the field control device controls the state change of the field solar panel based on the operation and maintenance control signal:
in the operation and maintenance control signal, based on a plurality of light intensity signal values, a solar azimuth driving mechanism adjusts the angle (solar azimuth) of the solar panel; based on the wind speed information, a solar altitude driving mechanism adjusts the height of the solar panel (solar altitude).
In another aspect, as a more preferred embodiment, a first field remote terminal unit, a second field remote terminal unit, a third field remote terminal unit and a fourth field remote terminal unit are distributed on the circumference of four directions of south, east and north of a circle with a radius R and taking the solar panel as a center of the circle;
the first and second field remote terminal units are located on the same diameter of the circle, the third and fourth field remote terminal units are located on the same diameter of the circle,
based on the above optimization, the invention further provides a solar photovoltaic power station operation and maintenance management method, which comprises the following steps:
s1: acquiring field wind speed information collected by the first field remote terminal unit, the second field remote terminal unit, the third field remote terminal unit and the fourth field remote terminal unitAnd the field light intensity information L1、L2、L3、L4
S2: generating a control adjustment signal based on the field wind speed information and the field light intensity information;
s3: acquiring real-time weather parameter information sent by the cloud storage control platform, wherein the real-time weather parameter information comprises real-time wind speed information and real-time weather type information of the position of the solar panel;
s4: searching a corresponding light intensity signal range from a preset relational database based on the weather type information;
s5: and generating the operation and maintenance control signal based on one or a combination of the light intensity signal range, the control adjustment signal and the real-time wind speed information.
The preset relational database stores corresponding relations between weather type information and light intensity signal ranges of different geographical positions in different time periods.
The weather type information is represented as Cweather={C1,C2,C3,C4,C5,C6,C7};
Wherein, C1Representing a cloudy day, C2Representing a sunny day, C3Representing cloudy, C4Representing rainy day, C5Representing snow sky, C6Representing a hail sky, C7Represents except C1-C6Other weather than weather.
The technical scheme of the invention can acquire accurate control parameters to the maximum extent, thereby realizing accurate automatic tracking control; meanwhile, the difference between the field parameter change of the photovoltaic power station and the data provided by the real-time cloud can be mastered in time, so that correct regulation and control parameters are selected for operation and maintenance control.
Further advantages of the invention will be apparent in the detailed description section in conjunction with the drawings attached hereto.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is an overall schematic diagram of a solar photovoltaic power station operation and maintenance management system according to an embodiment of the present invention
FIG. 2 is a schematic diagram of the distribution of Remote Terminal Units (RTUs) in the embodiment of FIG. 1
FIG. 3 is a flow chart of the operation and maintenance management method implemented by the system based on FIG. 2
FIG. 4 is a schematic diagram of the method of FIG. 3 for generating a control adjust signal
Detailed Description
The invention is further described with reference to the following drawings and detailed description.
Referring to fig. 1, an overall schematic diagram of a solar photovoltaic power station operation and maintenance management system according to an embodiment of the present invention is shown.
In fig. 1, the operation and maintenance management system includes a cloud storage control platform and a plurality of on-site solar panels, the cloud storage control platform is connected to on-site edge computing terminals, and the on-site edge computing terminals are connected to the solar panels through on-site control devices.
The operation and maintenance management system also comprises a field remote terminal unit;
the plurality of field remote terminal units are distributed around the field solar panel and are connected to the field control device through the field edge computing terminal;
the field remote terminal units comprise photosensitive sensors and wind speed sensors, the field remote terminal units acquire field light intensity signals through the photosensitive sensors, and field wind speed information is acquired through the wind speed sensors;
the cloud storage control platform comprises a geographic information database and a real-time weather database, and the geographic information database stores geographic position information of the solar panel;
the field remote terminal unit sends the collected field light intensity signal and the field wind speed information to the field edge computing terminal;
the field edge computing terminal preprocesses the field light intensity signal and the field wind speed information and then sends the processed field light intensity signal and the processed field wind speed information to the cloud storage control platform;
the cloud storage control platform generates an operation and maintenance control signal by utilizing the geographic information database and the real-time weather database based on the preprocessed field signal and sends the operation and maintenance control signal to the field control device;
and the field control device controls the state change of the field solar panel based on the operation and maintenance control signal.
The cloud storage control platform generates operation and maintenance control signals by utilizing the geographic information database and the real-time weather database based on the preprocessed field signals, and sends the operation and maintenance control signals to the field control device, and the cloud storage control platform specifically comprises:
the cloud storage control platform further comprises a weather type-light intensity signal corresponding database, and the weather type-light intensity signal corresponding database stores corresponding relations between weather type information and light intensity signal ranges at different geographic positions and different time periods;
the cloud storage control platform acquires real-time weather parameter information corresponding to the geographical position information of the on-site solar panel through a real-time weather database, wherein the real-time weather parameter information comprises real-time weather type information of the geographical position of the on-site solar panel;
finding out a corresponding light intensity signal range in the weather type-light intensity signal corresponding database based on the real-time weather type information;
and generating the operation and maintenance control signal based on the preprocessed field signal, the light intensity signal range and the wind speed information included in the real-time weather parameter information.
It should be noted that, after obtaining a plurality of accurate time-series values of the light intensity information and the wind speed information, how to generate an operation and maintenance control signal for tracking control, and control the state change of the solar photovoltaic conversion panel based on the light intensity signal value and/or the wind speed information in the operation and maintenance control signal, there are a plurality of known prior arts in the art, such as the light control and solar control technologies mentioned in the foregoing background art;
for example, for the light control technology, after a light intensity signal value is obtained, when the position of the sun changes, the photosensor generates a deviation current, the photoelectric detection circuit amplifies and shapes the deviation current to output a deviation signal to the controller, and the controller receives the deviation signal and drives the motor to rotate, so that incident light of the sun vertically irradiates on the light receiving surface of the tracking device.
For the solar control technology, the rotation tendency of the solar azimuth angle can be corrected according to the wind speed information so as to correct the accumulated deviation.
Of course, this is not the focus of the present invention, which is inventive in the data acquisition and accuracy of the light intensity information and the wind speed information before that.
Further, how to generate the tracking control command based on the obtained light intensity information and the wind speed information can be referred to the following prior art, and the present invention is not described in detail herein.
F.r.Rubio,M.G.Ortega,F.Gordillo.Application of new control strategy for sun tracking[J].Energy Conversion and Management,2007,48(7):2174-2184
Research on Wangshang, Gao Wei, Huangshuhong, hybrid biaxial solar automatic tracking device [ J ] renewable energy, 2007,25(6):22-25
Marlett Wentzel,Anastassios Pouris.The development impact of solar cookers:A review of solar cooking research in South Africa[C].Energy Policy,2007,35(3):1909-1919。
Wanghai army, mixed dual-axis sun tracking judgment system [ D ] based on cloudy and sunny judgment.
On the basis of fig. 1, referring to fig. 2, a distribution diagram of Remote Terminal Units (RTUs) in the embodiment of fig. 1 is shown.
As a general example, for each solar panel, a plurality of field remote terminal units are distributed in a plurality of different orientations within a circle with a radius R and the center of the circle being the solar panel.
As a specific example, in fig. 2, the plurality of remote terminal units in different orientations includes four remote terminal units in four different geographic directions within a predetermined target range, where the predetermined target range is a circle with a radius R from the center of the solar panel; the four different geographic directions are south-east-west-north, and the four remote terminals are respectively positioned on the circumferences of the four directions of south-east-west-north of the circle.
The first terminal unit (RTU1), the second terminal unit (RTU2) are located on the same diameter, and the third terminal unit (RTU3), the fourth terminal unit (RTU4) are located on the same diameter.
It is noted that in the above embodiments of the present invention, the edge computing terminal and the remote terminal unit are used for the first time.
The edge computing means that an open platform integrating network, computing, storage and application core capabilities is adopted at one side close to an object or a data source to provide nearest-end service nearby. The application program is initiated at the edge side, so that a faster network service response is generated, and the basic requirements of the industry in the aspects of real-time business, application intelligence, safety, privacy protection and the like are met. The edge computation is between the physical entity and the industrial connection, or on top of the physical entity.
The edge computing terminal is a terminal device which is arranged on the photovoltaic power generation site and used for achieving edge computing of the local site, can avoid data blockage, and can be matched with a remote cloud storage control platform.
A Remote Terminal Unit (RTU), which is a special computer measurement and control Unit with a modular structure designed for long communication distance and severe industrial field environment. The RTU can be implemented in a variety of different hardware and software depending on the nature of the controlled site, site environmental conditions, system complexity, requirements for data communication, real-time alarm reporting, analog signal measurement accuracy, condition monitoring, regulatory control of the device, and on-off control. Because the data transmission protocol, information structure and error detection technology adopted by each manufacturer are different, each manufacturer generally produces a special RTU matched with the SCADA system.
The RTU of this embodiment is the measurement and control module who is exclusively used in photovoltaic power generation field data monitoring.
Based on the RTU arrangement shown in fig. 2, referring to fig. 3, a schematic flow chart of an operation and maintenance management method implemented by the system is shown.
In FIG. 3, the method includes steps S1-S5.
The steps are specifically executed as follows:
s1: acquiring field wind speed information collected by the first field remote terminal unit, the second field remote terminal unit, the third field remote terminal unit and the fourth field remote terminal unitAnd the field light intensity information L1、L2、L3、L4
S2: generating a control adjustment signal based on the field wind speed information and the field light intensity information;
s3: acquiring real-time weather parameter information sent by the cloud storage control platform, wherein the real-time weather parameter information comprises real-time wind speed information and real-time weather type information of the position of the solar panel;
s4: searching a corresponding light intensity signal range from a preset relational database based on the weather type information;
s5: and generating the operation and maintenance control signal based on one or a combination of the light intensity signal range, the control adjustment signal and the real-time wind speed information.
The preset relational database stores corresponding relations between weather type information and light intensity signal ranges of different geographical positions in different time periods.
The weather type information is represented as Cweather={C1,C2,C3,C4,C5,C6,C7};
Wherein, C1Representing a cloudy day, C2Representing a sunny day, C3Representing cloudy, C4Representing rainy day, C5Representing snow sky, C6Representing a hail sky, C7Represents except C1-C6Other weather than weather.
Fig. 4 shows a schematic diagram of the method of fig. 3 for generating the control adjust signal.
Wherein, the S2 generates a control adjustment signal based on the field wind speed information and the field light intensity information, and specifically includes:
judgment ofAndandwhether the directions are the same;
if it is notAndandthe directions are the same, then the control adjustment signal is CT={avgL,maxV},
Wherein the content of the first and second substances,
if onlyAndif the direction is the same, the control adjustment signal is:
CT={avgL,maxV};
wherein the content of the first and second substances,
if onlyAndif the direction is the same, the control adjustment signal is:
CT={avgL,maxV};
wherein the content of the first and second substances,
the above-mentionedRepresenting wind speed informationI is 1, 2, 3, 4.
Based on fig. 4, in the embodiment of fig. 3, after the step S4 and before the step S5, the method further includes:
judging whether the avgL value in the control adjustment signal falls into the light intensity signal range or not;
if yes, generating an operation and maintenance control signal based on the control adjustment signal;
and if not, generating an operation and maintenance control signal based on the light intensity signal range and the maxV value in the control adjusting signal.
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 (10)

1. The operation and maintenance management system for the solar photovoltaic power station comprises a cloud storage control platform and a plurality of field solar panels, wherein the cloud storage control platform is connected with a field edge computing terminal, and the field edge computing terminal is connected with the solar panels through a field control device;
the method is characterized in that:
the field edge computing terminal is terminal equipment which is arranged on a photovoltaic power generation field and is used for realizing local field edge computing;
the operation and maintenance management system also comprises a field remote terminal unit;
the plurality of field remote terminal units are distributed around the field solar panel and are connected to the field control device through the field edge computing terminal;
the field remote terminal units comprise photosensitive sensors and wind speed sensors, the field remote terminal units acquire field light intensity signals through the photosensitive sensors, and field wind speed information is acquired through the wind speed sensors;
the cloud storage control platform comprises a geographic information database and a real-time weather database, and the geographic information database stores geographic position information of the solar panel;
the field remote terminal unit sends the collected field light intensity signal and the field wind speed information to the field edge computing terminal;
the field edge computing terminal preprocesses the field light intensity signal and the field wind speed information and then sends the processed field light intensity signal and the processed field wind speed information to the cloud storage control platform;
the cloud storage control platform generates an operation and maintenance control signal by utilizing the geographic information database and the real-time weather database based on the preprocessed field signal and sends the operation and maintenance control signal to the field control device;
and the field control device controls the state change of the field solar panel based on the operation and maintenance control signal.
2. The solar photovoltaic power station operation and maintenance management system of claim 1, wherein:
for each solar panel, a plurality of field remote terminal units are distributed in a plurality of different directions within a circle range with the solar panel as a circle center and a radius of R.
3. The solar photovoltaic power station operation and maintenance management system of claim 2, wherein:
a first field remote terminal unit, a second field remote terminal unit, a third field remote terminal unit and a fourth field remote terminal unit are distributed on the circumference of the circle with the solar panel as the center of circle and the radius of R in four directions of the south, the east and the north;
the first and second field remote terminal units are located on the same diameter of the circle, and the third and fourth field remote terminal units are located on the same diameter of the circle.
4. The solar photovoltaic power station operation and maintenance management system of claim 1, wherein:
the cloud storage control platform generates operation and maintenance control signals by utilizing the geographic information database and the real-time weather database based on the preprocessed field signals, and sends the operation and maintenance control signals to the field control device, and the cloud storage control platform specifically comprises:
the cloud storage control platform further comprises a weather type-light intensity signal corresponding database, and the weather type-light intensity signal corresponding database stores corresponding relations between weather type information and light intensity signal ranges at different geographic positions and different time periods;
the cloud storage control platform acquires real-time weather parameter information corresponding to the geographical position information of the on-site solar panel through a real-time weather database, wherein the real-time weather parameter information comprises real-time weather type information of the geographical position of the on-site solar panel;
finding out a corresponding light intensity signal range in the weather type-light intensity signal corresponding database based on the real-time weather type information;
and generating the operation and maintenance control signal based on the preprocessed field signal, the light intensity signal range and the wind speed information included in the real-time weather parameter information.
5. The solar photovoltaic power station operation and maintenance management system of claim 4, wherein:
the operation and maintenance control signal is generated based on the light intensity signal and a plurality of time-series values of the wind speed information,
based on the operation and maintenance control signal, control the change of state of on-the-spot solar panel specifically includes:
adjusting the angle of the solar panel based on a plurality of time series values of a plurality of light intensity signal values;
adjusting the height of the solar panel based on a plurality of time series values of the wind speed information.
6. A solar photovoltaic power station operation and maintenance management method is realized based on the solar photovoltaic power station operation and maintenance management system of claim 3, and is characterized by comprising the following steps:
s1: acquiring field wind speed information collected by the first field remote terminal unit, the second field remote terminal unit, the third field remote terminal unit and the fourth field remote terminal unitWith the field light intensity signal L1、L2、L3、L4
S2: generating a control adjustment signal based on the field wind speed information and the field light intensity signal;
s3: acquiring real-time weather parameter information sent by the cloud storage control platform, wherein the real-time weather parameter information comprises real-time wind speed information and real-time weather type information of the position of the solar panel;
s4: searching a corresponding light intensity signal range from a preset relational database based on the weather type information;
s5: and generating the operation and maintenance control signal based on one or the combination of the light intensity signal range, the control adjustment signal and the real-time wind speed information.
7. The operation and maintenance management method for the solar photovoltaic power station as claimed in claim 6, characterized in that:
the preset relational database stores corresponding relations between the weather type information and the light intensity signal range of different geographical positions in different time periods.
8. The operation and maintenance management method for the solar photovoltaic power station as claimed in claim 6, characterized in that:
the S2 generates a control adjustment signal based on the field wind speed information and the field light intensity signal, and specifically includes:
judgment ofAndandwhether the directions are the same;
if it is notAndandthe directions are the same, then the control adjustment signal is CT={avgL,maxV},
Wherein the content of the first and second substances,
if onlyAndif the direction is the same, the control adjustment signal is:
CT={avgL,maxV};
wherein the content of the first and second substances,
if onlyAndif the direction is the same, the control adjustment signal is:
CT={avgL,maxV};
wherein the content of the first and second substances,
the above-mentionedRepresenting wind speed informationI is 1, 2, 3, 4.
9. The operation and maintenance management method for the solar photovoltaic power station of claim 8, characterized by comprising the following steps: after the step S4, before the step S5, the method further comprises:
judging whether the avgL value in the control adjustment signal falls into the light intensity signal range or not;
if yes, generating an operation and maintenance control signal based on the control adjustment signal;
and if not, generating an operation and maintenance control signal based on the light intensity signal range and the maxV value in the control adjusting signal.
10. The operation and maintenance management method for the solar photovoltaic power station of claim 6 or 7, characterized by comprising the following steps:
the weather type information is represented as Cweather={C1,C2,C3,C4,C5,C6,C7};
Wherein, C1Representing a cloudy day, C2Representing a sunny day, C3Representing cloudy, C4Representing rainy day, C5Representing snow sky, C6Representing a hail sky, C7Represents except C1-C6Other weather than weather.
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