CN205847199U - A kind of photovoltaic module on-line detecting system - Google Patents
A kind of photovoltaic module on-line detecting system Download PDFInfo
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- CN205847199U CN205847199U CN201620684619.3U CN201620684619U CN205847199U CN 205847199 U CN205847199 U CN 205847199U CN 201620684619 U CN201620684619 U CN 201620684619U CN 205847199 U CN205847199 U CN 205847199U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
A kind of photovoltaic module on-line detecting system, parallel connection short circuit device on each photovoltaic module, use voltage detecting circuit that photovoltaic group string is carried out voltage measurement, use current detection circuit that photovoltaic group string carries out current detecting, and use intelligent control circuit to form described control system implementation Comprehensive Control.It provides the benefit that: by using this device or header box can directly monitor each piece of photovoltaic module, fault location is more accurate, the assembly of abnormal parameters can be picked out in the case of without obvious fault, improve the overall generating capacity of photovoltaic group string, reduce the comprehensive O&M cost of photovoltaic plant, and this photovoltaic module online test method, system cost is low easy for installation, far below at present by adding the cost installing independent monitor component module in group, and reliability is greatly enhanced, can carry out being applicable in the scene that all employing photovoltaic group string carry out generating electricity after the commercialization of this on-line detecting system, possesses great promotional value.
Description
Technical field
This utility model relates to a kind of method and system that photovoltaic module carries out in photovoltaic plant on-line checking, belongs to
The photovoltaic module on-line checking of detection control field, especially photovoltaic generation.
Background technology
The demand reduced discharging along with national energy-saving and the rise of clean energy resource, the various generating equipments utilizing clean energy resource are also got over
Coming the most universal, country greatly developed photovoltaic generation the most in recent years, and the photovoltaic plant installed capacity of cut-off China in 2015 has reached
Arrive 45GW, become the country that photovoltaic plant installation amount is maximum in the world.
The core of photovoltaic plant is photovoltaic module, 20-22 block photovoltaic module connect, become photovoltaic group string, by multiple light
Volt group string is confluxed by header box, and the final inverter that accesses carries out inversion grid connection generating.In actual running, due to light
The manufacture reason of photovoltaic assembly, the performance of each assembly own also differs, and especially in later stage running, assembly can occur various
Performance changes, and as by birds droppings, dust such as blocks at the assembly property reduction etc. caused, and owing to photovoltaic group string is polylith component string
Connection, the maximum power output of group string depends on the photovoltaic module that performance is worst, current published technology or commonly used skill
Art is by adding the monitoring of the current/voltage to photovoltaic group string in header box, and the data of contrast many groups string identify problem set
String, then by manually carrying out identification and the repairing of concrete photovoltaic module.This mode is only capable of goes here and there fault location and nothing to group
Method navigates to assembly, and during outward appearance no significant difference, maintenance is wasted time and energy, and component parameter is not mated to the entirety caused and send out
Electrical efficiency reduces currently without effective detection method.In order to solve the problems referred to above, in order to the monitoring of photovoltaic plant is refine to
Assembly, so that O&M cost is greatly reduced, promotes overall generated energy, and spy has carried out the present utility model.
Summary of the invention
The purpose of this utility model is to solve to ask specifying photovoltaic module to carry out on-line checking in photovoltaic generation
Topic, by the outfan controlled short-circuiting means in parallel at photovoltaic module, is issued an instruction to short circuit photovoltaic group by control system
A certain piece of photovoltaic module in string, draws be shorted assembly by analyzing the output voltage of photovoltaic group string and current detecting
Performance parameter, find out the problem photovoltaic module in photovoltaic group string and report to the police, in order to realize above-mentioned target, this utility model use
Technical scheme as follows:
A kind of photovoltaic module on-line detecting system, this utility model is characterised by, parallel connection short circuit on each photovoltaic module
Device, uses voltage detecting circuit that photovoltaic group string carries out voltage measurement, uses current detection circuit to carry out current detecting, and
Use intelligent control circuit to form described control system and carry out Comprehensive Control.
System described in the utility model is by intelligent control circuit short-circuiting means in parallel with photovoltaic module respectively, voltage inspection
Slowdown monitoring circuit, current detection circuit, power supply circuit, lightning-protection module, hand control circuit, sound light alarming circuit, data are transmitted
With communicating circuit；Data transmission is also connected with terminal management system with communicating circuit；Wherein, each piece of photovoltaic in photovoltaic group string
Assembly has all been installed in parallel a short-circuiting means, at the DC output end shunt voltage testing circuit of photovoltaic group string, series current
Testing circuit；Outfan in photovoltaic group string is in series with counnter attack diode, current detection circuit output to counnter attack diode,
Parallel operation power circuit after counnter attack diode, the DC output end in photovoltaic group string arranges lightning-protection module, power supply electricity
Road is that control circuit is powered, and intelligent control circuit is by receiving the relevant finger of hand control circuit or data transmission and communicating circuit
The short-circuiting means that order control is specified, and collect the related data of voltage detecting circuit and current detection circuit, pass through sound and light alarm
Circuit alarm or by data transmission with communicating circuit upload data to terminal management system.
This utility model short-circuiting means controls cable with intelligent control circuit by signal and is connected, by intelligent control circuit
Control short-circuiting means according to instruction or program setting and carry out corresponding actions.
This utility model short-circuiting means selects electric current to be more than 10A, pressure not less than the controlled short-circuiting means of 100V.
The transmission of this utility model data selects 485 interfaces to carry out data transmission, by external carrier wave or nothing with communicating circuit
The modes such as wire module and terminal management system are attached.
This utility model intelligent control circuit can control simultaneously and detect any photovoltaic module in multichannel photovoltaic group string
Short-circuiting means, and obtain the running state parameter specifying photovoltaic module.
This utility model intelligent control circuit be can accept manual instructions that hand control circuit sends or transmitted by data
The instruction sent by terminal management system with communicating circuit acceptance.
This utility model can be automatically performed corresponding module testing work according to setting, and corresponding test result is uploaded to
Terminal management system.
When between this utility model intelligent control circuit and controlled short-circuiting means, signal cable is long, can be by photovoltaic group
String terminal increases repeat circuit and realizes long-distance control and simplify control number of cables.
This utility model can individually designed become a kind of device or by this method and the system integration to intelligent junction box.
Counnter attack diode described in the utility model, after being arranged on current sensing means, if set in header box
Being equipped with counnter attack diode, counnter attack diode can not be installed the most in the present system.
The detection of this utility model minimum support one tunnel photovoltaic group string, can realize multichannel photovoltaic group by intelligent control circuit
The on-line checking of string.
The beneficial effects of the utility model are, by using device of the present utility model or header box directly to monitor
To each piece of photovoltaic module, fault location is more accurate, can pick out the assembly of abnormal parameters, carry in the case of without obvious fault
The overall generating capacity of high photovoltaic group string, reduces the comprehensive O&M cost of photovoltaic plant, and photovoltaic module of the present utility model exists
Line detecting method, system cost is low easy for installation, far below at present by organizing plus installing independent monitor component module
Cost, and reliability is greatly enhanced, and can enter in the scene that all employing photovoltaic group string carry out generating electricity after this utility model commercialization
Row popularization and application, possess great promotional value.
Accompanying drawing explanation
Fig. 1 is the method and system schematic diagram of a kind of photovoltaic module on-line checking.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and beneficial effect clearer, below in conjunction with accompanying drawing, to this
The preferred embodiment of utility model is described in detail, to facilitate the technical staff to understand.
A kind of photovoltaic module on-line detecting system, this utility model is characterised by, in parallel short on each piece of photovoltaic module 1
Road device 2, uses voltage detecting circuit 3 that photovoltaic group string carries out voltage measurement, uses current detection circuit 4 to enter photovoltaic group string
Row current detecting, and use intelligent control circuit 8 to form described control system implementation Comprehensive Control.
System described in the utility model is by intelligent control circuit 8 short-circuiting means 2 in parallel with photovoltaic module 1 respectively, electricity
Pressure testing circuit 3, current detection circuit 4, power supply circuit 6, lightning-protection module 7, hand control circuit 9, sound light alarming circuit
10, data transmission and communicating circuit 11；Data transmission is also connected with terminal management system 12 with communicating circuit 11；Wherein, photovoltaic
Each piece of photovoltaic module 1 in group string has all been installed in parallel a short-circuiting means 2, at the DC output end parallel connection electricity of photovoltaic group string
Pressure testing circuit 3, series current testing circuit 4；Outfan in photovoltaic group string is in series with counnter attack diode 5, current detecting electricity
Road 4 exports to counnter attack diode 5, and at counnter attack diode 5 parallel operation power circuit 6 below, the direct current in photovoltaic group string exports
End arranges lightning-protection module 7, and power supply circuit 6 is powered for control circuit 8, and intelligent control circuit 8 is by receiving hand control electricity
Road 9 or data transmission and the dependent instruction of communicating circuit 11 control the short-circuiting means 2 formulated, and collect voltage detecting circuit 3 with
The related data of current detection circuit 4, is reported to the police by sound light alarming circuit 10 or is uploaded with communicating circuit 11 by data transmission
Data are to terminal management system 12.
This utility model short-circuiting means 2 controls cable with intelligent control circuit 8 by signal and is connected, by Intelligent control electric
Road 8 controls short-circuiting means 2 according to instruction or program setting and carries out corresponding actions.
This utility model short-circuiting means 2 selects electric current to be more than 10A, the pressure controlled short-circuiting means not less than 100V.Preferably
Ground can use electric current to be more than 10A, pressure controllable silicon not less than 100V or meet the field effect transistor that relevant parameter requires, it is possible to
To use the life-span relay not less than 10,000 times.
The transmission of this utility model data selects 485 interfaces to carry out data transmission with communicating circuit 11, by external carrier wave or
The modes such as wireless module and terminal management system 12 are attached.
This utility model intelligent control circuit 8 can control simultaneously and detect any photovoltaic module 1 in multichannel photovoltaic group string
Short-circuiting means 2, and obtain specify photovoltaic module 1 running state parameter.
This utility model intelligent control circuit 8 be can accept manual instructions that hand control circuit 9 sends or passed by data
The defeated instruction accepting with communicating circuit 11 to be sent by terminal management system 12.
This utility model can be automatically performed corresponding module testing work according to setting, and corresponding test result is uploaded to
Terminal management system 12.
When between this utility model intelligent control circuit 8 and controlled short-circuiting means 2, signal cable is long, preferably can be at light
Volt group string terminal realizes long-distance control by arranging repeat circuit and simplifies control number of cables.
This utility model can individually designed become a kind of device or by this method and the system integration to intelligent junction box.
Counnter attack diode described in the utility model, after being arranged on current sensing means, if set in header box
Being equipped with counnter attack diode, counnter attack diode can not be installed the most in the present system.
The detection of this utility model minimum support one tunnel photovoltaic group string, can realize multichannel photovoltaic by intelligent control circuit 8
The on-line checking of group string.
This utility model is the system of a kind of on-line checking for photovoltaic module, and its core concept is according to photovoltaic module
Self-characteristic and the mode of operation of current photovoltaic plant carry out the detection of online photovoltaic module performance, photovoltaic module belongs to constant current
Source, himself characteristic determines that it can be shorted, and in photovoltaic plant, is typically together in series by 20-22 photovoltaic module, constitutes light
Volt group string, is carried out direct current by many optical crosstalks volt group string by header box and confluxes, finally enter after combining inverter carries out inversion grid-connected
Output electric energy.And the peak power output of photovoltaic group string depends on that block photovoltaic module that performance is minimum, this utility model is just
It is by the photovoltaic module in photovoltaic group string being carried out in order short circuit, after short circuit, photovoltaic group string being carried out output voltage and output
Electric current measures, and i.e. can obtain being shorted the performance parameter of photovoltaic module by the contrast of front and back's data, thus identify group
The photovoltaic module that in string, performance is minimum, reaches reporting to the police of alarming threshold value.
This utility model, in actual application, if the header box of photovoltaic plant is provided with counnter attack diode, then may be used
To cancel the counnter attack diode in independent detection device, it is to avoid the power loss caused due to multiple counnter attack diodes, if converged
Stream case is provided with lightning protection device, then can cancel the lightning protection device of independent detection device to reduce cost.Fill in independent detection
In putting, need the way of the photovoltaic group string detected as required to arrange corresponding voltage detecting and current detection circuit, accompanying drawing
For the principle schematic for a road photovoltaic group string, for multichannel photovoltaic group string, need to arrange multichannel electric current voltage detecting circuit.
Expanded according to actual photovoltaic group string quantity by intelligent control circuit and control interface accordingly, control letter by controlling interface output
Number control the short-circuiting means action of corresponding photovoltaic group string, and carry out voltage and the collection of current data of corresponding light volt group string.
In actual product design, directly can use native system in intelligent junction box, fill part and utilize intelligent junction
The current/voltage testing circuit of the photovoltaic group string that case has been provided with, power supply circuit and data transmission and communicating circuit etc., only
Need to install short-circuiting means 2 on photovoltaic module 1, increase in the intelligent control circuit of intelligent junction box and control interface accordingly
Just can realize the on-line checking function to photovoltaic module.
Operation principle of the present utility model and concrete operative scenario, its core should be able to be understood clearly by described above
Heart principle is aiming at photovoltaic module the characteristic of short circuit and the maximum output of photovoltaic group string can depend on that in group string, performance is minimum
This general knowledge of assembly；This utility model is used to be possible not only to design and manufacture special photovoltaic module on-line measuring device, it is possible to
Realize photovoltaic module on-line checking and set designing and manufacturing the intelligent junction box possessing photovoltaic module on-line checking function or other
Standby.Every by use the photovoltaic module in photovoltaic group string carried out short circuit carry out the various methods of group string detection, device or
System all should be at the row of protection of the present utility model.
Claims (5)
1. a photovoltaic module on-line detecting system, it is characterised in that at the upper parallel connection short circuit device (2) of each photovoltaic module (1),
Use voltage detecting circuit (3) that photovoltaic group string carries out voltage measurement, use current detection circuit (4) that photovoltaic group string is carried out electricity
Stream detection, and use intelligent control circuit (8) to form described control system implementation Comprehensive Control.
A kind of photovoltaic module on-line detecting system the most according to claim 1, it is characterised in that described system is by intelligence
Control circuit (8) short-circuiting means (2) in parallel with photovoltaic module (1) respectively, voltage detecting circuit (3), current detection circuit
(4), power supply circuit (6), lightning-protection module (7), hand control circuit (9), sound light alarming circuit (10), data transmission are with logical
News circuit (11)；Data transmission is also connected with terminal management system (12) with communicating circuit (11)；Wherein, every in photovoltaic group string
One piece of photovoltaic module (1) has all been installed in parallel a short-circuiting means (2), and the DC output end shunt voltage in photovoltaic group string detects
Circuit (3), series current testing circuit (4)；Outfan in photovoltaic group string is in series with counnter attack diode (5), current detecting electricity
Road (4) output is to counnter attack diode (5), at counnter attack diode (5) parallel operation power circuit (6) below, in photovoltaic group string
DC output end arranges lightning-protection module (7), and power supply circuit (6) is control circuit (8) power supply, and intelligent control circuit (8) leads to
Cross the short-circuiting means (2) that the dependent instruction control of reception hand control circuit (9) or data transmission and communicating circuit (11) is specified,
And collect the related data of voltage detecting circuit (3) and current detection circuit (4), reported to the police by sound light alarming circuit (10) or logical
Cross data transmission and upload data to terminal management system (12) with communicating circuit (11).
3. a kind of photovoltaic module on-line detecting system as claimed in claim 2, it is characterised in that short-circuiting means (2) and intelligence
Control circuit (8) controls cable by signal and is connected, intelligent control circuit (8) control short circuit according to instruction or program setting
Device (2) carries out corresponding actions.
4. a kind of photovoltaic module on-line detecting system as claimed in claim 2, it is characterised in that electricity selected by short-circuiting means (2)
Stream is more than 10A, pressure not less than the controlled short-circuiting means of 100V.
5. a kind of photovoltaic module on-line detecting system as claimed in claim 2, it is characterised in that data transmission and communicating circuit
(11) select 485 interfaces to carry out data transmission, entered by the modes such as external carrier wave or wireless module and terminal management system (12)
Row connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620684619.3U CN205847199U (en) | 2016-07-01 | 2016-07-01 | A kind of photovoltaic module on-line detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620684619.3U CN205847199U (en) | 2016-07-01 | 2016-07-01 | A kind of photovoltaic module on-line detecting system |
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| Publication Number | Publication Date |
|---|---|
| CN205847199U true CN205847199U (en) | 2016-12-28 |
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| CN201620684619.3U Active CN205847199U (en) | 2016-07-01 | 2016-07-01 | A kind of photovoltaic module on-line detecting system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111402078A (en) * | 2020-03-11 | 2020-07-10 | 合肥阳光新能源科技有限公司 | Photovoltaic string diagnosis method and device and controller |
-
2016
- 2016-07-01 CN CN201620684619.3U patent/CN205847199U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111402078A (en) * | 2020-03-11 | 2020-07-10 | 合肥阳光新能源科技有限公司 | Photovoltaic string diagnosis method and device and controller |
| CN111402078B (en) * | 2020-03-11 | 2023-06-30 | 阳光新能源开发股份有限公司 | Photovoltaic string diagnosis method, device and controller |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |