CN106788251A - A kind of peasant household house roof photovoltaic power station detecting system and detection method - Google Patents

A kind of peasant household house roof photovoltaic power station detecting system and detection method Download PDF

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Publication number
CN106788251A
CN106788251A CN201611182432.4A CN201611182432A CN106788251A CN 106788251 A CN106788251 A CN 106788251A CN 201611182432 A CN201611182432 A CN 201611182432A CN 106788251 A CN106788251 A CN 106788251A
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China
Prior art keywords
photovoltaic panel
peasant household
voltage
power station
inverter
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CN201611182432.4A
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Chinese (zh)
Inventor
周崇波
陈飞飞
李旭东
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Hangzhou Huadian Double Crown Energy Technology Co Ltd
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Hangzhou Huadian Double Crown Energy Technology Co Ltd
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Priority to CN201611182432.4A priority Critical patent/CN106788251A/en
Publication of CN106788251A publication Critical patent/CN106788251A/en
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02SGENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED 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
    • H02S50/10Testing of PV devices, e.g. of PV modules or single PV cells
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/10Measuring sum, difference or ratio
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R35/00Testing or calibrating of apparatus covered by the other groups of this subclass
    • G01R35/04Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02SGENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/10Cleaning arrangements
    • 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
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/10Photovoltaic [PV]
    • 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

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Photovoltaic Devices (AREA)

Abstract

The invention discloses a kind of peasant household house roof photovoltaic power station detecting system and detection method, it includes photovoltaic panel cleaning module, photovoltaic panel detection module, inverter detection module, electric energy meter detection module and acquisition control module.Press water delivered into roof photovoltaic panel with pipeline high-end to clean photovoltaic panel dust;By gathering each photovoltaic panel terminal voltage, inverter ac side Current Voltage, electric energy meter umber of pulse, electrical equipment status are judged by acquisition control module and normal outcome data and abnormal generation cumulative data are uploaded into a distant place.The data that distant place Operation and Maintenance Center is uploaded according to each peasant household's acquisition control module, implement to concentrate O&M with management.The present invention is detected to being dispersed in peasant household's all kinds of electrical equipments of 5kwp roof photovoltaic power stations, employs elementary methods and be suitable for peasant household's background.Therefore, the present invention generates electricity peasant household's roof photovoltaic power station more, the aspect such as trip has practical value in time for many incomes of peasant household and operation maintenance personnel.

Description

A kind of peasant household house roof photovoltaic power station detecting system and detection method
Technical field
The present invention relates to the use of Internet of Things sensing detection technology carries out the application of operation maintenance to new energy electrical equipment, tool Body is related to a kind of peasant household house roof photovoltaic power station detecting system and detection method.
Background technology
Most area can receive solar irradiation throughout the year on the earth, compared with nuclear power, thermoelectricity, solar energy have take it The characteristics of nexhaustible not to the utmost.Last decade, the high speed development of photovoltaic power generation technology, for people are provided using solar power generation Wide stage.The previous photovoltaic plant built is substantially based on big-and-middle-sized centralized photovoltaic plant, to take up an area more than thousand mu dresses More than machine MW;Big-and-middle-sized centralized photovoltaic plant someone is on duty patrols and examines for these, there is a whole set of operation maintenance system.However, building Roof photovoltaic power station is one of most effective approach of distributed power generation, and is that rural poverty family installation roof photovoltaic power station is One important measure of the accurate help-the-poor policy of China.
As shown in Figure 1 a typical peasant household roof photovoltaic power station, peasant household roof or one layer or two layers, setting height(from bottom) or 3 meters or 7 meters.Peasant household is all mostly the family individual of a family one, and peasant household's roof photovoltaic power station each is equipped with complete electrical equipment, As it has 16 photovoltaic panels, combining inverter and charging electric meters.In actual moving process, each electrical equipment link has It is likely to occur exception or even failure.It is additionally, since the covering of dust storm, dust, it is also possible to cause the decrease of power generation of photovoltaic panel.
At present, the daily maintenance work of photovoltaic plant includes:1)The O&M of photovoltaic module;2) O&M of header box;3) it is inverse Become the O&M of device;4) O&M of converting equipment;O&M mode is mainly:Soon, hand is touched(Directly touch or utilize specific purpose tool), nose The methods such as sub- news, ear.In terms of photovoltaic panel dust cleaning, on the basis of manually cleaning is cleaned, there is photovoltaic Plate dust automatic sweeping machine system.
In electrical equipment context of detection, the SUNNY PORTAL photovoltaic power station monitoring systems interface of SMA companies design is introduced , with from consuming, the automatic intelligent for realizing load by wireless remotecontrol is controlled, and is had for the photovoltaic generation of associated power station, consumption The characteristics of Real-time Data Visualization.And for example publication date is on November 06th, 2013, and the China of Publication No. CN103384089A is specially In profit, disclose a kind of based on Zigbee photovoltaic generating systems data acquisition device and acquisition method, by Zigbee wireless networks Network mode realizes that photovoltaic power station is monitored, and can not only solve large-scale and similar to village distribution roof photovoltaic power station Monitoring problem, and across route cable is buried without drawing when using, no data traffic fee realizes low cost, the intelligent management in power station.But It is that this kind of systemic-function is very powerful, installed in the terminal device somewhat expensive of photovoltaic plant, complexity is operated with, for the phase Treat monthly to get the peasant household of 400-500 units income especially for family with financial difficulties, these big-and-middle-sized photovoltaic plant technologies are can not be straight Connect and indiscriminately imitate what is used.What current peasant household roof photovoltaic power station was adopted is original measure, such as manually directly climbs up roof or people's station Clean cleaning personally on ladder, this is extremely dangerous.Peasant household is exactly often to let matters drift in face of electrical equipment status.Together When peasant household scattered settlement feature, cause professional to patrol and examine difficulty and increase.In the urgent need to being detected towards peasant household's roof photovoltaic power station The technological means of maintenance and measure.
The content of the invention
It is an object of the invention to overcome above shortcomings in the prior art, and provide a kind of peasant household house roof light Overhead utility detecting system and detection method.Aim to solve the problem that isolated scattered peasant household's roof photovoltaic power station can be clear with water at any time one by one Photovoltaic panel dust is washed, abnormal simple, convenient, the elementary technological means of electrical equipment is found in time.
The present invention the used technical scheme that solves the above problems is:Peasant household's house roof photovoltaic power station detecting system bag Photovoltaic panel detection module, inverter detection module and electric energy meter detection module are included, its feature is also to clean mould including photovoltaic panel Block and acquisition control module;
The photovoltaic panel cleaning module is made up of pipeline, Kong Guan, total effluent switch and indicator lamp, when photovoltaic panel has dust, by Photovoltaic panel cleaning module completes the cleaning to photovoltaic panel;
The acquisition control module be single-chip microcomputer or embedded controller, the analog input loop of the acquisition control module with The inverter detection module and the photovoltaic panel detection module are connected, the On-off signal loop of the acquisition control module with The pulse interface connection of the electric energy meter detection module, output switch parameter loop and the photovoltaic panel of the acquisition control module Cleaning module is connected, and distally Operation and Maintenance Center uploads data, the especially collection to the communication loop of the acquisition control module Control module realizes the detection and assessment of peasant household's each electrical equipment of house roof photovoltaic power station by operating assigned work flow.
Preferably, the total effluent switch of photovoltaic panel cleaning module of the present invention is manual completely open and close valve.
Preferably, the pipeline hole pipe of photovoltaic panel cleaning module of the present invention is common PVC pipe, by conventional joint phase Even after by press water from piston-type container cause roof photovoltaic panel it is high-end from, its hollow tube photovoltaic panel it is high-end along East and West direction spread If;The indicator lamp of the photovoltaic panel cleaning module is near total effluent switch, the indicator lamp and the acquisition control module Output switch parameter loop connection.
A kind of peasant household house roof photovoltaic power station detection method, based on described house roof photovoltaic power station detection system of peasant household System, it is characterised in that:Workflow, inverter apparatus detection workflow, the inspection of electric energy meter equipment are detected including photovoltaic board device Survey workflow, and on send data workflow.
Preferably, photovoltaic board device detection workflow of the present invention is as follows:
(1)Each photovoltaic panel voltage is calculated for UiScene top to bottm, left-to-right photovoltaic panel are corresponded to respectively;
(2)Calculate UmeanIt is the average voltage of all photovoltaic panels;
(3)Set up normal photovoltaic panel voltage change curve model:Sunrise can shortly rise to crest voltage;Afternoon 3-4 points Voltage can drop to below crest voltage;Post sunset voltage suppression ratio is very fast, but will not arrive drop zero;
(4)Judge Ui-UmeanWhether close to 0;Abnormality mark is put if the super threshold value of deviation;
(5)If voltage UiVoltage change curve model is not met, the photovoltaic panel operation irregularity is can determine whether.
Preferably, inverter apparatus detection workflow of the present invention is as follows:
(1)Calculate UaddFor all photovoltaic panel magnitudes of voltage and;
(2)Set up photovoltaic panel it is in good condition under the conditions of voltage and current vs table;
When total voltage is more than 280V, output current is more than 20A;
When total voltage is more than 280V, output current is more than 15A;
When total voltage is more than 220V, output current is more than 10A;
(3)When voltage x current runs counter to above-mentioned voltage with current vs table, you can judge inverter operation irregularity;
(4)Especially when more than 220V, inverter ac side no current is exported voltage value, you can judge that inverter occurs Failure.
Preferably, electric energy meter equipment detection workflow of the present invention is as follows:
(1)Photovoltaic panel Plant in good condition;
(2)Inverter apparatus are intact;
(3)Calculate inverter ac side power, collection per second once and adds up, and is formed per hour(Kilowatt-hour)Electricity W1;
(4)Calculate charging electric meter output umber of pulse(1 degree of electricity meter constant 3200 in 5A transformers)Electricity is converted to after accumulation Amount W2;
(5)Compare two SOC values W1 and W2 to make the difference, when deviation surmounts threshold value, judge electric energy meter exception.
Preferably, sending data workflow as follows on of the present invention:
(1)Upload message content and Telecontrol Protocol framework is circulated using CDT;
(2)Header is the EB 90 of 90 EB of EB 90;
(3)Add yards accounts for two bytes, and function code accounts for a byte, and numeric data code accounts for a byte;
(4)Data volume accounts for six bytes, and CRC check accounts for two bytes;
(5)Without any exception(There is no photovoltaic panel exception, there is no inverter exception, there is no charging electric meter exception, do not have yet Press water cleans behavior)In the case of, selection function code 01, data volume content is to generate electricity same day generating total electricity and each hour Amount;
(6)After abnormal generation, reached with difference in functionality code table:0A is photovoltaic panel exception, and 0B is inverter exception, and 0C is charge electric energy Table exception, 0D is acted for press water cleaning;Abnormal data when data volume is for abnormal generation, it is first per minute to upload a secondary data, even It is continuous 10 minutes;A secondary data is then uploaded per hour, until manual-lock.
The present invention compared with prior art, with advantages below and effect:It is an object of the invention to provide a kind of peasant household House roof photovoltaic power station detecting system, it is a full process manually that its photovoltaic panel cleans module, and identical peasant household is especially It is family with financial difficulties physical feature and cognitive ability;Acquisition control module can determine whether electrical equipment exception and inform county town cities and towns safeguard in Heart professional, is capable of achieving the effect of " note abnormalities for a hour, solve problem in three days ";So as to ensure the warp of peasant household's family with financial difficulties Ji income, is that national new energy policy and help-the-poor policy provide technical foundation.Therefore, the present invention is realizing the family room of one family of rural area one The simple, efficient, quick of top light overhead utility, economical operation service mode aspect have application value.
Brief description of the drawings
Fig. 1 is the structural representation of typical peasant household's roof photovoltaic power station in the prior art.
Fig. 2 is the structural representation of peasant household house roof photovoltaic power station detecting system of the present invention.
Fig. 3 is the schematic diagram that the present invention is detected to each electrical equipment link of peasant household's roof photovoltaic power station.
Fig. 4 is that acquisition control module of the present invention completes initial configuration and enters cycle detection schematic flow sheet first.
Fig. 5 is that acquisition control module of the present invention is patrolling and examining testing process schematic diagram.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings and by embodiment, and following examples are to this hair Bright explanation and the invention is not limited in following examples.
Embodiment.
The invention provides a kind of peasant household house roof photovoltaic power station detecting system and detection method.
As shown in figure 1, the daily maintenance work of peasant household's roof photovoltaic power station is mainly photovoltaic panel dust cleaning and electrical equipment Detection, while being provided with the remote maintenance center of professional in county town cities and towns.Peasant household's roof photovoltaic power station electrical equipment is main Including photovoltaic panel in itself, combining inverter, electric energy meter.
Peasant household as shown in Figure 2 house roof photovoltaic power station detecting system by partly constituting as follows:Photovoltaic panel cleaning module, light The compositions such as volt plate detection module, inverter detection module, electric energy meter detection module, acquisition control module and distant place Operation and Maintenance Center. Wherein acquisition control module is the hinge of system, by acquisition control module analog input loop and inverter detection module and Photovoltaic panel detection module is connected, and is connected by acquisition control module On-off signal loop and electric energy meter detection module pulse interface Connect, be connected with photovoltaic panel cleaning module by acquisition control module output switch parameter loop, communicated back by acquisition control module Road direction distant place Operation and Maintenance Center uploads data.And photovoltaic panel cleaning module then provides technology specifically designed for peasant household's roof photovoltaic panel dust Scheme.
Common PVC pipe coordinates with common PVC tube connector part, is always opened through water outlet open and close from press water water out adapter Close to peasant household roof photovoltaic panel region, common PVC pipe is finally connected with pvc pipe with holes.
The circular hole aperture of pvc pipe with holes is 3-5mm, and circular hole pitch of holes is 20mm or so, and pvc pipe two ends with holes are close Close, press water is projected from circular hole.
Peasant household or voluntarily observation dust storm influence or observe the indicator lamp bright on photovoltaic panel, can manually be grasped entirely along above-mentioned flow Realize cleaning photovoltaic panel dust.
As shown in figure 3, being detected to each electrical equipment link of peasant household's roof photovoltaic power station.
One piece of photovoltaic panel open-circuit voltage is 55VDC, can by DC DC chips(Such as TD1501H chips)Conversion, obtains 0- 5VDC voltages.16 photovoltaic panels configure 16 one-to-one DC DC chips, be connected to acquisition control module analog input time Road.Thus, acquisition control module has obtained each piece of photovoltaic panel terminal voltage.
Combining inverter is the power apparatus that direct current is converted to exchange, and it is DC side to be input into, and is output as AC;Exchange Side is synchronous with voltage holding with mains frequency.Can be by transmitter(Such as HZ-PQ1)Alternating current, alternating voltage are converted to Direct voltage output, this transmitter direct current output and inverter power direct proportionality;This transmitter direct current output is connected to Acquisition control module analog input loop.Thus, acquisition control module has obtained inverter ac side power.
The exportable pulse of electric energy meter(As kilowatt-hour is equal to 3200 pulses), electric energy meter pulse output may be coupled directly to adopt Collection control module On-off signal loop.Thus, acquisition control module can be counted to the pulse of electric energy meter output.
By abovementioned technology, peasant household roof photovoltaic power station photovoltaic panel electrical equipment, combining inverter electrical equipment, electricity Energy table electrical equipment is all connected with acquisition control module, and acquisition control module can obtain photovoltaic panel terminal voltage, acquisition control module Can obtain inverter ac side electric current and power, acquisition control module can obtain electric energy meter summation pulse number.
The acquisition control module is single-chip microcomputer or embedded controller.It is defeated that the acquisition control module includes analog quantity Entry loop, On-off signal loop, output switch parameter loop, electric power loop, serial communication loop and wireless communication module.As schemed Shown in 4, the acquisition control module completes initial configuration and enters cycle detection flow first.
But judge assessment of the acquisition control module to peasant household's roof photovoltaic power station electrical equipment abnormality is according to three What individual detection workflow was carried out is the acquisition control module according to these three detection workflow software code realizations 's.
The photovoltaic board device detection workflow is as follows:
(1)Each photovoltaic panel voltage is calculated for UiScene top to bottm, left-to-right photovoltaic panel are corresponded to respectively;
(2)Calculate UmeanIt is the average voltage of all photovoltaic panels;
(3)Set up normal photovoltaic panel voltage change curve model:Sunrise can shortly rise to crest voltage;Afternoon 3-4 points Voltage can drop to below crest voltage;Post sunset voltage suppression ratio is very fast, but will not arrive drop zero;
(4)Judge Ui-UmeanWhether close to 0;Abnormality mark is put if the super threshold value of deviation;
(5)If voltage UiVoltage change curve model is not met, the photovoltaic panel operation irregularity is can determine whether.
The inverter apparatus detection workflow is as follows:
(1)Calculate UaddFor all photovoltaic panel magnitudes of voltage and.
(2)Set up photovoltaic panel it is in good condition under the conditions of voltage and current vs table;
When total voltage is more than 280V, output current is more than 20A;
When total voltage is more than 280V, output current is more than 15A;
When total voltage is more than 220V, output current is more than 10A;
(3)When voltage x current runs counter to above-mentioned voltage with current vs table, you can judge inverter operation irregularity;
(4)Especially when more than 220V, inverter ac side no current is exported voltage value, you can judge that inverter occurs Failure.
The electric energy meter equipment detection workflow is as follows:
(1)Photovoltaic panel Plant in good condition;
(2)Inverter apparatus are intact;
(3)Calculate inverter ac side power, collection per second once and adds up, and is formed per hour(Kilowatt-hour)Electricity W1;
(4)Calculate charging electric meter output umber of pulse(1 degree of electricity meter constant 3200 in 5A transformers)Electricity is converted to after accumulation Amount W2;
(5)Compare two SOC values W1 and W2 to make the difference, when deviation surmounts threshold value, judge electric energy meter exception.
Send data workflow as follows on described:
(1)Upload message content and Telecontrol Protocol framework is circulated using CDT;
(2)Header is the EB 90 of 90 EB of EB 90;
(3)Add yards accounts for two bytes, and function code accounts for a byte, and numeric data code accounts for a byte;
(4)Data volume accounts for six bytes, and CRC check accounts for two bytes;
(5)Without any exception(There is no photovoltaic panel exception, there is no inverter exception, there is no charging electric meter exception, do not have yet Press water cleans behavior)In the case of, selection function code 01, data volume content is to generate electricity same day generating total electricity and each hour Amount;
(6)After abnormal generation, reached with difference in functionality code table:0A is photovoltaic panel exception, and 0B is inverter exception, and 0C is charge electric energy Table exception, 0D is acted for press water cleaning;Abnormal data when data volume is for abnormal generation, it is first per minute to upload a secondary data, even It is continuous 10 minutes;A secondary data is then uploaded per hour, until manual-lock.
Acquisition control module is patrolling and examining testing process operation flow as shown in Figure 5, by the photovoltaic board device detection work Flow, inverter apparatus detection workflow, electric energy meter equipment detection workflow are melted into acquisition control module Among assessment is judged.
Application of the present invention is peasant household's roof photovoltaic power station, is the family scattered distribution of a family one, and peasant household is especially difficult Expect the monthly income 400-500 units from photovoltaic power station power generation in family.But dust, electrical equipment can all cause peasant household difficult extremely The benefited decline at family so without be benefited.The invention provides a kind of peasant household house roof photovoltaic power station detecting system, its collection Control module can determine whether that electrical equipment is abnormal and upload distant place maintenance centre, quick solve problem of pinpointing the problems in time in time.Cause This, the present invention the family roof photovoltaic power station field of one family of rural area one propose one it is simple, efficiently, it is quick, economical, have practicality The service mode of value.
Furthermore, it is necessary to explanation, the specific embodiment described in this specification, is named the shape of its parts and components Claiming etc. can be with difference, and the above content described in this specification is only to structure example explanation of the present invention.It is all according to The equivalence changes or simple change done according to the construction described in inventional idea of the present invention, feature and principle, are included in this hair In the protection domain of bright patent.Those skilled in the art can do various to described specific embodiment The modification of various kinds or supplement are substituted using similar mode, without departing from structure of the invention or surmount present claims Scope defined in book, all should belong to protection scope of the present invention.

Claims (8)

1. a kind of peasant household house roof photovoltaic power station detecting system, including photovoltaic panel detection module, inverter detection module and electricity Energy table detection module, it is characterised in that:Also include photovoltaic panel cleaning module and acquisition control module;
The photovoltaic panel cleaning module is managed by pipeline, hole and total effluent switch is constituted, clear by photovoltaic panel when photovoltaic panel has dust Mold cleaning block completes the cleaning to photovoltaic panel;
The acquisition control module be single-chip microcomputer or embedded controller, the analog input loop of the acquisition control module with The inverter detection module and photovoltaic panel detection module connection, the acquisition control module On-off signal loop and institute The connection of electric energy meter detection module pulse interface is stated, output switch parameter loop and the photovoltaic panel of the acquisition control module are cleaned Module is connected, and distally Operation and Maintenance Center uploads data to the communication loop of the acquisition control module, and the acquisition control module is led to Cross detection and assessment that operating assigned work flow realizes peasant household's each electrical equipment of house roof photovoltaic power station.
2. peasant household house roof photovoltaic power station detecting system according to claim 1, it is characterised in that:The photovoltaic panel is clear The Kong Guanwei common PVC pipes of mold cleaning block, the high-end place of roof photovoltaic panel, its mesopore are caused after being connected by conventional joint by press water Pipe is high-end along East and West direction laying in photovoltaic panel;Total effluent switch of the photovoltaic panel cleaning module and the acquisition control module Output switch parameter loop connects.
3. peasant household house roof photovoltaic power station detecting system according to claim 1, it is characterised in that:The photovoltaic panel is clear Total effluent switch of mold cleaning block is manual completely open and close valve.
4. a kind of peasant household house roof photovoltaic power station detection method, based on peasant household house as claimed in claim 1 or 2 roof light Overhead utility detecting system, it is characterised in that:The peasant household house roof photovoltaic power station detection method is detected including photovoltaic board device Workflow, inverter apparatus detection workflow, electric energy meter equipment detection workflow, and on send data workflow.
5. peasant household house roof photovoltaic power station detection method according to claim 4, it is characterised in that:The photovoltaic panel sets Standby detection workflow is as follows:
(1)Each photovoltaic panel voltage is calculated for Ui, scene top to bottm, left-to-right photovoltaic panel are corresponded to respectively;
(2)Calculate UmeanIt is the average voltage of all photovoltaic panels;
(3)Set up normal photovoltaic panel voltage change curve model:Crest voltage is risen to after sunrise;Afternoon 3-4 points voltage can under Drop to below crest voltage;Post sunset voltage will not arrive drop zero;
(4)Judge Ui-Umean Whether close to 0;Abnormality mark is put if the super threshold value of deviation;
(5)If voltage UiVoltage change curve model is not met, the photovoltaic panel operation irregularity is can determine whether.
6. peasant household house roof photovoltaic power station detection method according to claim 4, it is characterised in that:The inverter sets Standby detection workflow is as follows:
(1)Calculate UaddFor all photovoltaic panel magnitudes of voltage and;
(2)Set up photovoltaic panel it is in good condition under the conditions of voltage and current vs table:
When total voltage is more than 280V, output current is more than 20A;
When total voltage is more than 280V, output current is more than 15A;
When total voltage is more than 220V, output current is more than 10A;
(3)When voltage x current runs counter to above-mentioned voltage with current vs table, you can judge inverter operation irregularity;
(4)Especially when more than 220V, inverter ac side no current is exported voltage value, you can judge that inverter occurs Failure.
7. peasant household house roof photovoltaic power station detection method according to claim 4, it is characterised in that:The electric energy meter sets Standby detection workflow is as follows:
(1)Photovoltaic panel Plant in good condition;
(2)Inverter apparatus are intact;
(3)Calculate inverter ac side power, collection per second once and is added up, and electricity W1 is formed per hour;
(4)Electricity W2 is converted to after calculating charging electric meter output umber of pulse accumulation;
(5)Compare two SOC values W1 and W2 and make the difference, when deviation surmounts threshold value, judge electric energy meter exception.
8. peasant household house roof photovoltaic power station detection method according to claim 4, it is characterised in that:Data are sent on described Workflow is as follows:
(1)Upload message content and Telecontrol Protocol is circulated using CDT;
(2)Header is the EB 90 of 90 EB of EB 90;
(3)Add yards accounts for two bytes, and function code accounts for a byte, and numeric data code accounts for a byte;
(4)Data volume accounts for six bytes, and CRC check accounts for two bytes;
(5)In the case of in no photovoltaic panel exception, without abnormal, the no charging electric meter exception of inverter, selection function code 01, data volume content is same day generating total electricity and each hour generated energy;
(6)After abnormal generation, reached with difference in functionality code table:0A is photovoltaic panel exception, and 0B is inverter exception, and 0C is charge electric energy Table exception, 0D is acted for press water cleaning;Abnormal data when data volume is for abnormal generation, it is first per minute to upload a secondary data, even It is continuous 10 minutes;A secondary data is then uploaded per hour, until manual-lock.
CN201611182432.4A 2016-12-20 2016-12-20 A kind of peasant household house roof photovoltaic power station detecting system and detection method Pending CN106788251A (en)

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Application publication date: 20170531