CN104158490A - Photovoltaic power station standard plate energy measuring system - Google Patents
Photovoltaic power station standard plate energy measuring system Download PDFInfo
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- CN104158490A CN104158490A CN201410409127.9A CN201410409127A CN104158490A CN 104158490 A CN104158490 A CN 104158490A CN 201410409127 A CN201410409127 A CN 201410409127A CN 104158490 A CN104158490 A CN 104158490A
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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
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- 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
Abstract
The invention discloses a photovoltaic power station standard plate energy measuring system comprising a plurality of solar energy standard plate energy measurement assemblies; DC electric energy meters, the number of which is corresponding to that of the solar energy standard plate energy measurement assemblies; grid -connected inverters, the number of which is corresponding to that of the solar energy standard plate energy measurement assemblies; a data collector, an environmental monitor station, monitoring equipment and a central control room, wherein each solar energy standard plate energy measurement assembly is connected with the corresponding grid-connected inverter through the corresponding DC electric energy meter respectively; the grid-connected inverters are in data connection with the data collector through a data bus; the data collector is connected to the central control room through a fiber; the monitoring equipment is connected to the central control room through a transmission fiber; and the environmental monitor station is connected to the data collector through a data bus. The photovoltaic power station standard plate energy measuring system can effectively improve measured photovoltaic power station power generation efficiency PR precision so as to meet photovoltaic power station precision management and lean production requirements.
Description
Technical field
The present invention relates to technical field of new energies, be specifically related to a kind of monitoring technology of photovoltaic power station system efficiency.
Background technology
Photovoltaic power station power generation efficiency PR weighs the design of photovoltaic plant and the most important basic performance indicators of managerial skills in photovoltaic generation enterprise, be the most critical index that realizes the accurate management of photovoltaic plant and lean production.
Generating efficiency PR is affected by many factors, as: all many-sides such as geographical environment, Power Plant Design, equipment and technology level, equipment quality and on-the-spot operation and maintenance level, the photovoltaic power station power generation efficiency PR that therefore simply comparison system output energy draws with input energy can not meet the requirement of the accurate management of photovoltaic plant and lean production.
Summary of the invention
For the not high problem of photovoltaic power station power generation efficiency PR monitoring accuracy in prior art, the object of the present invention is to provide a kind of photovoltaic plant on-gauge plate energy gauge, it is by setting up unified Efficiency Evaluation standard, by the unit of measurement of Criterion, realize between power station the unification of the numerical value reference system between the subsystem of power station.
In order to achieve the above object, the present invention adopts following technical scheme:
Photovoltaic plant on-gauge plate energy gauge, described system comprises: some solar energy on-gauge plate energy measurement assemblies, the direct current energy meter that quantity is corresponding with solar energy on-gauge plate energy measurement assembly, the combining inverter that quantity is corresponding with solar energy on-gauge plate energy measurement assembly, data acquisition unit, environmental monitoring station, watch-dog and Central Control Room, described each solar energy on-gauge plate energy measurement assembly joins with corresponding combining inverter by direct current energy meter respectively, all combining inverters join by data/address bus and data acquisition unit data, described data acquisition unit is connected to Central Control Room by optical fiber, described watch-dog is connected to Central Control Room by passing optical fiber, described environmental monitoring station is connected to data acquisition unit by data/address bus.
In preferred embodiment of the present invention, described solar energy on-gauge plate energy measurement assembly is selected from the assembly on existing operation group string in solar power generation power station.
Further, described solar energy on-gauge plate energy measurement assembly is chosen four block assemblies: three old assemblies, a New Parent; The numerical value of described New Parent is exported as mark post all the time; The output of described three old assemblies is as follows:
The equal < 1% of numerical value deviation of (1) three Geju City assembly, gets the numerical value of two assemblies the most close with the mean value of these three component values, using the mean value of the numerical value of these two close assemblies as output valve; If when the numerical value of this output valve and a New Parent exceedes 5% deviation, produce and report to the police;
The numerical value of (2) three assemblies, the numerical value of one of them assembly and the deviation > of two other numerical value 1%, and increase progressively by regularity, trace back to so last time point, find the numerical value different from rule, calculate according to method 1 afterwards;
The numerical value of (3) three assemblies, the numerical value of one of them assembly and the deviation > of two other numerical value 1%, produce and report to the police, and simultaneity factor generates a mechanism, gets the mean value of the numerical value of two other assembly, as output valve.
Further, described solar energy on-gauge plate energy measurement assembly comprises modularization standard cell plate unit and on-gauge plate support, and described modularization standard cell plate unit is arranged on on-gauge plate support.
Further, described watch-dog is made up of wide temperature Zoom camera connection industrial computer.
Further, in described environmental monitoring station, comprise full spectroanalysis instrument.
Further, described data/address bus is 485 buses.
Further, in described system, also comprise gps clock timing device and on-gauge plate measuring system warning device, in described system, also comprise gps clock timing device and on-gauge plate measuring system warning device, described gps clock timing device is connected by 485 Serial Port Lines with on-gauge plate measuring system warning device, the transducer that described on-gauge plate measuring system warning device is installed by on-gauge plate receives the measurement data of on-gauge plate, and data itself are analyzed, judge whether data exist abnormal conditions, if there are abnormal conditions, report to the police.
Photovoltaic plant on-gauge plate energy gauge of the present invention is by setting up unified Efficiency Evaluation standard, by the unit of measurement of Criterion, realize between power station, the unification of the numerical value reference system between the subsystem of power station, can effectively improve the precision of the photovoltaic power station power generation efficiency PR monitoring, to meet, photovoltaic plant is accurately managed and the requirement of lean production.
Brief description of the drawings
Further illustrate the present invention below in conjunction with the drawings and specific embodiments.
Fig. 1 is the theory diagram of photovoltaic plant on-gauge plate energy gauge in the present invention;
Fig. 2 is that photovoltaic plant on-gauge plate energy gauge assembly is chosen schematic diagram.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
Referring to Fig. 1, it is depicted as the theory diagram of photovoltaic plant on-gauge plate energy gauge.As seen from the figure, whole photovoltaic plant on-gauge plate energy gauge 100 mainly comprises some solar energy on-gauge plate energy measurement assemblies 101, some direct current energy meters 102, some combining inverters 103, data acquisition unit 104, environmental monitoring station 105, watch-dog 106, transfer of data and communication apparatus 107 and Central Control Room 108.
Wherein, each solar energy on-gauge plate energy measurement assembly 101 correspondences are connected to a direct current energy meter 102, and these direct current energy meter 102 correspondences are connected to a combining inverter 103.
Solar energy on-gauge plate energy measurement assembly 101 is mainly made up of modularization standard cell plate unit 101a and on-gauge plate support 101b, it is upper that modularization standard cell plate unit 101a is arranged on on-gauge plate support 101b as requested, forms solar energy on-gauge plate energy measurement assembly 101.
In the specific implementation, solar energy on-gauge plate energy measurement assembly 101 is taken from the assembly on the existing operation group string in power station conventionally; If contain multiple different assembly on photovoltaic plant, some solar energy on-gauge plate energy measurement assemblies 101 in photovoltaic plant on-gauge plate energy gauge need to be chosen every kind of assembly, the assembly of choosing should be chosen for suitable from main batch of corresponding assembly kind, the number of components of each kind should be at least 3 (but being not limited to this), between these assemblies, be preferably even apart from distributing, form thus the some solar energy on-gauge plate energy measurement assemblies 101 in photovoltaic plant on-gauge plate energy gauge.Should ensure that for all photovoltaic modulies of on-gauge plate every day clean, need all to keep at any time the dustless state of assembly surface.
As optimal case, every kind of assembly is chosen four, wherein three old assemblies, a New Parent.
The numerical value of New Parent is exported as mark post all the time.
Three old assemblies divide three kinds of situations, as follows:
1. the equal < 1% of the numerical value deviation of three Geju City assemblies, gets the numerical value of two assemblies the most close with the mean value of these three component values, using the mean value of the numerical value of these two close assemblies as output valve; If when the numerical value of this output valve and a New Parent exceedes 5% deviation, produce and report to the police.
2. the numerical value of three assemblies, the numerical value of one of them assembly and the deviation > of two other numerical value 1%, and increase progressively by regularity, trace back to so last time point, find the numerical value different from rule, calculate according to method 1 afterwards;
3. the numerical value of three assemblies, the numerical value of one of them assembly and the deviation > of two other numerical value 1%, produce and report to the police, and simultaneity factor generates a mechanism, gets the mean value of the numerical value of two other assembly, as output valve.
The output valve computational process of three old assemblies is divided three kinds of situations, specifically referring to table 1:
Table 1
Solar energy on-gauge plate energy measurement assembly 101 after selected, elevation angle when its work is all identical with the elevation angle and the azimuth of on-the-spot other assembly (non-measurement assembly) with azimuth, can ensure like this accuracy of measuring.
Direct current energy meter 102, its quantity is corresponding with solar energy on-gauge plate energy measurement assembly 101 quantity in system 100, realize with solar energy on-gauge plate energy measurement assembly 101 and connecting one to one, realize thus the direct current measurement that the each solar energy on-gauge plate of Real-time Obtaining energy measurement assembly 101 produces.
This direct current energy meter 102 can measuring voltage i, electric flux kWh in electric current v, instantaneous power p and definition time section, and precision reaches 0.2 grade, and supports the output of Modbus stipulations.Its important technological parameters is as follows:
1. wide temperature range type special DC electric flux meter;
2. DC input voitage: 0～60V;
3. rated current: 0～20A;
4. power reguirements: 220AC;
5. communication need: RS485, ModbusRTU;
6. working temperature :-25 DEG C～70 DEG C;
7. storage temperature :-40 DEG C～85 DEG C;
8. insulation voltage: 2500V;
9. electric flux certainty of measurement: 0.2～0.5%;
10. current-voltage measurement precision: 0.2%;
11. from power consumption: <2W.
Combining inverter 103, its quantity is corresponding with solar energy on-gauge plate energy measurement assembly 101 quantity in system 100, realizes with direct current energy meter 102 and connecting one to one, and realizes the direct current that direct current energy meter 102 is obtained and carries out inversion output.
This combining inverter 103 adopts the grid-connected Miniature inverter of modularization, and its important technological parameters is as follows:
1) maximum direct current power input: 250W;
2) maximum DC input voitage: 20V～50V;
3) MPPT voltage range: 24V～40V;
4) standard exchanges AC power output: 235W;
5) standard exchanges AC output current: 1.02A;
6) exchange AC output voltage range: 195V～253V (adjustable);
7) exchange AC frequency range: 49.5Hz～51.5Hz;
8) overall harmonic distortion: <3%.
Environmental monitoring station 105, is the high-precision environment monitoring station containing full spectroanalysis instrument, for measuring solar energy on-gauge plate energy measurement assembly 101 environmental data around.It is measured content and comprises: global radiation, scattering radiation, directly radiation, reflected radiation, net total radiation, ultraviolet light, visible ray, near infrared light, far red light, hours of daylight.
In the time of specific implementation, environmental monitoring station comprises environment temperature sensor, humidity sensor, anemoclinograph, total irradiation instrument, direct projection irradiation instrument, scattering irradiation instrument, assembly temperature transducer, barometric pressure sensor.
Environment temperature sensor function is collection site ambient temperature data, is arranged on weather acquisition system support.
Humidity sensor function is collection site ambient humidity data, is arranged on weather acquisition system support.
Anemoclinograph function is collection site ambient wind velocity, wind direction data, is arranged on weather acquisition system support.
Total irradiation instrument function is collection site solar energy global radiation data, is arranged on weather acquisition system support.
Direct projection irradiation instrument function is collection site solar energy vertical radiation data, is arranged on weather acquisition system support.
Scattering irradiation instrument function is collection site solar energy irradiation scattering data, is arranged on weather acquisition system support.
Barometric pressure sensor function is collection site ambient atmosphere pressure force data, is arranged on weather acquisition system support.
Assembly temperature sensor function, for gathering on-gauge plate assembly temperature data, is arranged on the on-gauge plate assembly back side.
Wherein carry out equipment by weather acquisition system support and fix, by weather data collection plate, the weather data analog quantity of each transducer collection is converted to digital signal and carries out data processing, pending data collector image data.
Solar energy on-gauge plate energy measurement assembly 101 environmental data analog quantity around accurately, is comprehensively measured by various transducers by the environmental monitoring station 105 forming thus, by environment collection plate, analog signal is converted to digital signal again, is transferred in photovoltaic plant on-gauge plate energy gauge and analyzes.
Data acquisition unit 104, it is by all combining inverter 103 and environmental monitoring stations 105 in 485 data/address bus connected systems, the data of above each equipment of Real-time Collection, and the sun of real-time Transmission on-gauge plate measuring system divides spectrum irradiation value, total solar irradiation value, the accurate energy output of DC side, AC limit for tonnage information and real-time clock, system alarm information etc.; Meanwhile, data acquisition unit 104 reaches transfer of data and communication apparatus 107 by all data in real time by serial ports or network mode, is uploaded in real time the Central Control Room 108 of general headquarters by transfer of data and communication apparatus 107.
Wherein, data acquisition unit carries out denoising to the energy output collecting and relevant environment data, and corresponding relation between definite different pieces of information amount is to further analyze.
Watch-dog 106, it is specially video monitoring equipment, for example, for the state of the real-time all solar energy on-gauge plates of monitoring site energy measurement assembly 101, fineness etc.
This watch-dog mainly comprises technical grade wide temperature Zoom camera 106a and on-the-spot industrial computer 106b, the solar energy on-gauge plate energy measurement assembly 101 corresponding settings that the wide temperature Zoom camera of technical grade 106a is concrete and on-the-spot, and technical grade wide temperature Zoom camera 106a and on-the-spot industrial computer 106b data are joined, and on-the-spot industrial computer 106b is connected to transfer of data and communication apparatus 107 by data wire.
Wherein the important technological parameters of the wide temperature Zoom camera of the technical grade 106a in watch-dog 106 is as follows:
1. outdoor version adjustable focus camera, degree of protection IP68;
2. camera independent rack and support ground;
3. DVR and remote data coffret, exportable high-definition screen, supports long-range focusing;
4. adopt video communication cable.
As an alternative solution, the wide temperature Zoom camera of technical grade 106a can adopt infra-red heat to become instrument to substitute, and can reach thus same monitoring effect.
Transfer of data and communication apparatus 107, be specially fibre-optic terminus equipment, for realize by all data of system for field collection with the mode of optical fiber at a high speed, the real-time Central Control Room 108 that reaches.It is mainly by light terminal box and optical-electrical converter mix proportion.
Central Control Room 108, is the data processing control center of whole system, and it is positioned at rear and is connected in transfer of data and communication apparatus 107 by optical fiber, the data of receiver transmission in real time.
This Central Control Room 108 is by the energy output information of optical fiber on-the-spot each solar energy on-gauge plate energy measurement assembly 101 of Real-time Obtaining from transfer of data and communication apparatus 107, the state information of the ambient condition information of each solar energy on-gauge plate energy measurement assembly 101 and each solar energy on-gauge plate energy measurement assembly 101, and according to the time, by the energy output information of each solar energy on-gauge plate energy measurement assembly 101, ambient condition information and state information are carried out corresponding stored, and carry out total score and analyse, obtain different spectrum, relation between various component states and assembly energy output, determine thus on-the-spot different assembly, can obtain maximum generating effect corresponding to which kind of environment and state.
Concrete, the energy that this Central Control Room 108 specifically receives by measurement standard plate, and the deviation of the energy that in the theory of computation, on-gauge plate receives and the actual energy receiving, thereby improve the precision of the photovoltaic power station power generation efficiency PR monitoring, and come thus photovoltaic plant accurately to manage and lean production.
In the time carrying out the energy that measurement standard plate specifically receives, first calculate the energy that the inclined plane at on-gauge plate place absorbs, and on inclined plane, the computational process of amount of radiation is as follows:
First, calculate directly auxiliary penetrating.
Direct projection irradiance on different inclined planes can utilize following formula to obtain:
S(β，α)＝Sm·cosθ；
In formula, θ is the incidence angle of sunray to inclined plane, can be drawn by following formula:
cosθ＝cosβSinh+Sinβcoshcos(Ψ-α)；
In formula, β is the angle between inclined plane and horizontal plane, and h is sun altitude, and Ψ is the azimuth of the sun, and α is the azimuth on inclined plane, and azimuth is counted from due south, westwards for just, eastwards for negative.For horizontal plane, due to β=0, thus cos θ=Sinh, therefore:
S(0，0)＝Sm·Sinh
If K
s=S (β, α)/S (0,0), by formula substitution above, has:
K
S＝cosθ/Sinh＝cosβ+Sinβ·cos(Ψ-α)/tanh
K
sbe called conversion coefficient.
There is K
sbe worth, be easy to obtain the radiation value on inclined plane according to the radiation value on horizontal plane.For the amount of radiation of exposing to the sun of different periods, be also like this.Time ask calculate K
stime, Ψ, α, the equivalent mean value of wanting the corresponding period of substitution of h.
When calculating exposing to the sun when amount of radiation in longer period of time, as daily amount, use conversion coefficient also very convenient, just K at this moment
svalue should draw, and can not calculate by above-mentioned geometrical relationship from measured value.For practicality, with the K of monthly average daily amount
svalue most convenient, it is than the K on indivedual dates
svalue to the dependence of cloud amount and transparent situation still less.Other influences K
sthe factor be place latitude, inclined plane towards with month etc.
Then, calculate scattering radiation.
Calculate different scattering irradiances on inclined plane, difficulty is much bigger.Common solution is that supposition radiation is isotropic, is evenly distributed.Like this, scattering irradiance E
d ↓with reflection irradiance E
r ↑can calculate by following formula:
E
d ↓(β，α)＝E
d ↓(1+Cosβ)/2；
E
r ↑(β，α)＝E
r ↑(1-Cosβ)/2；
E in formula
d ↓and E
r ↑scattering and the reflection irradiance on the water surface.
But, calculate the scattering irradiance on inclined plane according to scattering irradiance on horizontal plane with following formula, Billy with isotropic hypothesis more accurate this.
E
d ↓(β，α)+E
r ↑(β，α)＝K(E
d+E
r)·E
d ↓
Conversion coefficient K (E
d+ E
r) be under various sun altitudes and azimuth, determine by the result that pyranometer is surveyed the scattering irradiance on various inclined surfaces and reflection irradiance.
Moreover, calculate total auxiliary penetrating.
Under isotropic prerequisite, the global radiation on inclined plane can calculate with following formula:
E
g ↓(β，α)＝Ks·Sm+E
d ↓(1+Cosβ)/2+E
r ↑(1-Cosβ)/2
But, for most of users, directly obtain E from the global radiation of horizontal plane by conversion coefficient Kg
g ↓(β, α) is more convenient,
E
g ↓(β，α)＝Kg·E
g ↓。
By above-mentioned formula, the energy that inclined plane that can accurate Calculation on-gauge plate place absorbs, is multiplied by on-gauge plate so again, i.e. the concrete area of every block assembly, the energy that the on-gauge plate that can obtain is accepted.
On the basis of such scheme, also can in photovoltaic plant on-gauge plate energy gauge 100, increase gps clock timing device and on-gauge plate measuring system warning device, to further improve the Performance And Reliability of photovoltaic plant on-gauge plate energy gauge 100.
The concrete structure feature of gps clock timing device comprises that volume is little, easy for installation, purposes is convenient, simple to operate, is arranged on data equipment end to be adopted, be connected by network or 485 lines with other building block, carry out time calibration by network and country of Chinese Academy of Sciences time service central server.
On-gauge plate measuring system warning device has the design feature of instantaneity, accuracy, be arranged on the lower end of data acquisition unit, be connected by netting twine with data acquisition unit, the transducer of installing by on-gauge plate receives the measurement data of on-gauge plate, and data itself are analyzed, judge that whether data exist abnormal conditions, if there are abnormal conditions, report to the police.
Further illustrate below the scheme of photovoltaic plant on-gauge plate energy gauge by an instantiation.
In this example, relate to a certain solar power station project, in this power station, adopt altogether the photovoltaic module of 4 kinds of different models.
Wherein, the installation of photovoltaic plant on-gauge plate energy gauge, adopts following technical requirement:
A) on-gauge plate need near key light Fu Qu and preferably from Control of Power Plant chamber close to, be convenient to cleaning;
B) the photovoltaic module inclination angle of on-gauge plate and azimuth need to be in full accord with original support inclination angle, power station;
C) the ground surface situation that on-gauge plate measuring system is settled is consistent with entirety earth's surface, power station, and can not be subject to the impact of the possible reflected radiation of nearby buildings.
The concrete equipment of photovoltaic plant on-gauge plate energy gauge is selected as follows:
On-gauge plate energy measurement assembly, can adopt following two schemes to arrange:
Scheme one: directly get one jiao as standard edition with the power station being built into.Choose 4 kinds of different assemblies, replace original same assembly.
Scheme two: standard edition is built in addressing again.
Owing to adopting altogether the photovoltaic module of 4 kinds of different models in power station, therefore three photovoltaic modulies of the photovoltaic module of same model sampling are as sampling plate (adopt this power station is existing have been moved and three of intact photovoltaic modulies), totally 12 block assemblies (referring to Fig. 2) in this example.
Direct current energy scale, each piece photovoltaic module is all installed a direct current energy scale, totally 12.
Miniature grid-connected inverter, each piece solar components is all installed a miniature grid-connected inverter, totally 12.
High-precision environment monitoring station (weather system), point spectrum irradiation value of irradiation instrument is measured particularly important, needs 1 cover.
Watch-dog: the Optical Fiber Transmission of supporting front end camera and rear end center monitoring equipment room.
Fibre-optic terminus equipment, comprises light terminal box and optical-electrical converter
Smartlogg, harvester, gathers standard edition data and delivers to Central Control Room server by optical fiber transmission
By the photovoltaic plant on-gauge plate energy gauge of above-mentioned each equipment composition, its carry out data acquisition and integrated requirement as follows:
A) on-gauge plate provides the real-time curve about the direct current energy of photovoltaic module in each wave band and all band irradiation value, the corresponding on-gauge plate of temperature;
B) direct current energy real-time Transmission is given relevant performance and system effectiveness PR measuring and calculating program;
C) all measurement result Real-time Feedbacks of on-gauge plate system are to centralized control center of general headquarters;
D) device data acquisition frequency is once per minute, and the frequency that device data is uploaded to centralized control center of general headquarters is once per minute, and the frequency that wherein video data is uploaded is every 60 minutes frames.
More than show and described general principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (8)
1. photovoltaic plant on-gauge plate energy gauge, it is characterized in that, described system comprises: some solar energy on-gauge plate energy measurement assemblies, the direct current energy meter that quantity is corresponding with solar energy on-gauge plate energy measurement assembly, the combining inverter that quantity is corresponding with solar energy on-gauge plate energy measurement assembly, data acquisition unit, environmental monitoring station, watch-dog and Central Control Room, described each solar energy on-gauge plate energy measurement assembly joins with corresponding combining inverter by direct current energy meter respectively, all combining inverters join by data/address bus and data acquisition unit data, described data acquisition unit is connected to Central Control Room by optical fiber, described watch-dog is connected to Central Control Room by passing optical fiber, described environmental monitoring station is connected to data acquisition unit by data/address bus.
2. photovoltaic plant on-gauge plate energy gauge according to claim 1, is characterized in that, described solar energy on-gauge plate energy measurement assembly is selected from the assembly on existing operation group string in solar power generation power station.
3. photovoltaic plant on-gauge plate energy gauge according to claim 1, is characterized in that, described solar energy on-gauge plate energy measurement assembly is chosen four block assemblies: three old assemblies, a New Parent; The numerical value of described New Parent is exported as mark post all the time; The output of described three old assemblies is as follows:
The equal < 1% of numerical value deviation of (1) three Geju City assembly, gets the numerical value of two assemblies the most close with the mean value of these three component values, using the mean value of the numerical value of these two close assemblies as output valve; If when the numerical value of this output valve and a New Parent exceedes 5% deviation, produce and report to the police;
The numerical value of (2) three assemblies, the numerical value of one of them assembly and the deviation > of two other numerical value 1%, and increase progressively by regularity, trace back to so last time point, find the numerical value different from rule, calculate according to method 1 afterwards;
The numerical value of (3) three assemblies, the numerical value of one of them assembly and the deviation > of two other numerical value 1%, produce and report to the police, and simultaneity factor generates a mechanism, gets the mean value of the numerical value of two other assembly, as output valve.
4. according to the photovoltaic plant on-gauge plate energy gauge described in claim 1 or 2 or 3, it is characterized in that, described solar energy on-gauge plate energy measurement assembly comprises modularization standard cell plate unit and on-gauge plate support, and described modularization standard cell plate unit is arranged on on-gauge plate support.
5. photovoltaic plant on-gauge plate energy gauge according to claim 1, is characterized in that, described watch-dog connects industrial computer by wide temperature Zoom camera and forms.
6. photovoltaic plant on-gauge plate energy gauge according to claim 1, is characterized in that, comprises full spectroanalysis instrument in described environmental monitoring station.
7. photovoltaic plant on-gauge plate energy gauge according to claim 1, is characterized in that, described data/address bus is 485 buses.
8. photovoltaic plant on-gauge plate energy gauge according to claim 1, it is characterized in that, in described system, also comprise gps clock timing device and on-gauge plate measuring system warning device, described gps clock timing device is connected by 485 Serial Port Lines with on-gauge plate measuring system warning device, the transducer that described on-gauge plate measuring system warning device is installed by on-gauge plate receives the measurement data of on-gauge plate, and data itself are analyzed, judge whether data exist abnormal conditions, if there are abnormal conditions, report to the police.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107171641A (en) * | 2017-05-31 | 2017-09-15 | 江苏普世祥光电技术有限公司 | A kind of photovoltaic system |
| CN108491362A (en) * | 2018-03-19 | 2018-09-04 | 广西壮族自治区气象减灾研究所 | The statistical method of region sun altitude average deviation characteristic rule |
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| CN202334381U (en) * | 2011-11-28 | 2012-07-11 | 山东力诺太阳能电力工程有限公司 | Data real-time acquisition monitoring system in photovoltaic power supply system |
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| CN107171641A (en) * | 2017-05-31 | 2017-09-15 | 江苏普世祥光电技术有限公司 | A kind of photovoltaic system |
| CN108491362A (en) * | 2018-03-19 | 2018-09-04 | 广西壮族自治区气象减灾研究所 | The statistical method of region sun altitude average deviation characteristic rule |
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