CN206023703U - Photovoltaic module fault monitoring system - Google Patents
Photovoltaic module fault monitoring system Download PDFInfo
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- CN206023703U CN206023703U CN201621021993.1U CN201621021993U CN206023703U CN 206023703 U CN206023703 U CN 206023703U CN 201621021993 U CN201621021993 U CN 201621021993U CN 206023703 U CN206023703 U CN 206023703U
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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
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Abstract
The utility model discloses a kind of photovoltaic module fault monitoring system.The system includes：Voltage monitor, is connected with photovoltaic module, for monitor photovoltaic module terminal voltage and according to terminal voltage generate analog voltage signal；Data acquisition unit, is connected with voltage monitor, for gathering analog voltage signal according to predetermined period and judging photovoltaic module whether failure according to analog voltage signal；Control terminal, is connected with data acquisition unit, for adjusting predetermined period.By this utility model, solve the problems, such as cannot to judge photovoltaic module whether failure in correlation technique.
Description
Technical field
This utility model is related to malfunction monitoring field, in particular to a kind of photovoltaic module fault monitoring system.
Background technology
One standard photovoltaic module is generally made up of 60 photovoltaic cells, as shown in figure 1, each photovoltaic cell is suitable
In an independent out-put supply, its IV (current-voltage) characteristic curve is as shown in Figure 2.All 60 cell pieces are together in series
Externally export, output current is about 10～15A, output voltage is about 30～40V.When one piece of photovoltaic cell breaks down,
The electric current of the cell piece is substantially reduced, and is just occurred such as the situation of ii quadrant in Fig. 2, is become a very big load of pressure drop,
Up to 30V, big pressure drop can cause cell piece to be brought rapidly up initiation fire for pressure drop.
In prior art, the potential safety hazard brought to prevent cell piece from breaking down, generally in several cell pieces, example
Such as, as shown in fig. 1, a diode in parallel in 20 cell pieces, if any a piece of battery in this 20 cell pieces
Piece failure, diode can will be all short-circuit for this 20 cell pieces.This mode avoids hot spot effect to a certain extent, reduces
Failure is for the loss for generating electricity, but the tour personnel in power station cannot find there is component at the scene or from back-end data
Raw failure, cannot also determine which component there occurs that failure, failure persistently will be present, not only have impact on the work(of whole photovoltaic group
Rate, offsets from maximum power point, and there is breakneck potential safety hazard.
For the photovoltaic module whether problem of failure cannot be judged in correlation technique, not yet propose effective solution party at present
Case.
Utility model content
Main purpose of the present utility model is to provide a kind of photovoltaic module fault monitoring system, to solve in correlation technique
The photovoltaic module whether problem of failure cannot be judged.
To achieve these goals, according to one side of the present utility model, there is provided a kind of photovoltaic module malfunction monitoring
System.The system includes：Voltage monitor, is connected with photovoltaic module, for monitoring the terminal voltage basis of photovoltaic module
Terminal voltage generates analog voltage signal；Data acquisition unit, is connected with voltage monitor, for gathering according to predetermined period
Analog voltage signal simultaneously judges photovoltaic module whether failure according to analog voltage signal；Control terminal, with data acquisition unit phase
Connection, for adjusting predetermined period.
Further, photovoltaic module is multiple photovoltaic modulies；Voltage monitor be multiple voltage monitors, Duo Ge electricity
Pressure monitoring device is connected one to one with multiple photovoltaic modulies and is used for generating multiple analog voltage signals.
Further, data acquisition unit is connected with multiple voltage monitors.
Further, in multiple voltage monitors, each voltage check device includes：Address scrambler, for determining certainly
The address code of body；Data transmission module, is connected with address scrambler and control terminal.
Further, multiple photovoltaic modulies include that target photovoltaic module, data acquisition unit include：Sampling module is and more
Individual voltage monitor is connected, for gathering analog voltage signal；Time block, is connected with sampling module, for timing
Send sampled signal；Fault diagnosis module, is connected with sampling module, for the analog voltage according to multiple voltage monitors
Signal judges target photovoltaic module whether failure.
Further, data acquisition unit also includes：Memorizer, is connected with sampling module, for according to present sample
The analog voltage signal for obtaining updates historical data base.
Further, voltage monitor includes：Reducing transformer, for reducing the magnitude of voltage of terminal voltage.
Further, voltage monitor includes：Voltage comparator, is connected with reducing transformer, after according to reduction
The magnitude of voltage of terminal voltage determines the interval residing for the magnitude of voltage of terminal voltage.
Further, voltage monitor includes：Signal coder, is connected with voltage comparator, for according to interval
Output analog voltage signal.
Further, voltage monitor also includes：Warning circuit, is connected with voltage comparator, in interval being
Warning is sent during pre-set interval.
This utility model monitors terminal voltage the root of photovoltaic module by the voltage monitor being connected with photovoltaic module
Analog voltage signal is generated according to terminal voltage；The data acquisition unit being connected with voltage monitor gathers mould according to predetermined period
Intend voltage signal and photovoltaic module whether failure is judged according to analog voltage signal；The control end being connected with data acquisition unit
End adjustment predetermined period, solves the problems, such as cannot to judge photovoltaic module whether failure in correlation technique, and then has reached accurately
The ground monitoring photovoltaic module whether effect of failure.
Description of the drawings
The accompanying drawing for constituting the part of the application is used for providing further understanding to of the present utility model, of the present utility model
Schematic description and description is used for explaining this utility model, does not constitute to improper restriction of the present utility model.In accompanying drawing
In：
Fig. 1 is a kind of schematic diagram of the standard photovoltaic module according to prior art；
Fig. 2 is a kind of characteristic schematic diagrams of IV of the photovoltaic cell according to prior art；
Fig. 3 is the schematic diagram of the photovoltaic module fault monitoring system according to this utility model first embodiment；
Fig. 4 is showing for the physical communication model of the photovoltaic module fault monitoring system according to this utility model second embodiment
It is intended to；
Fig. 5 is the principle schematic of the photovoltaic module fault monitoring system according to this utility model 3rd embodiment；
Fig. 6 is the internal structure schematic diagram of the voltage monitor according to this utility model embodiment；And
Fig. 7 is that the mounting means of the voltage monitor and data acquisition unit according to this utility model embodiment is illustrated
Figure.
Specific embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combine.Below with reference to the accompanying drawings and in conjunction with the embodiments describing this utility model in detail.
In order that those skilled in the art more fully understand application scheme, below in conjunction with the embodiment of the present application in
Accompanying drawing, to the embodiment of the present application in technical scheme be clearly and completely described, it is clear that described embodiment is only
The embodiment of the application part, rather than whole embodiments.Embodiment in based on the application, ordinary skill people
The every other embodiment obtained under the premise of creative work is not made by member, should all belong to the model of the application protection
Enclose.
It should be noted that the description and claims of this application and the term " first " in above-mentioned accompanying drawing, "
Two " it is etc. for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that so using
Data can exchange in the appropriate case, so as to embodiments herein described herein.Additionally, term " including " and " tool
Have " and their any deformation, it is intended that cover a series of non-exclusive system, the product for including, for example, containing units
Product or equipment are not necessarily limited to those units that clearly lists, but may include clearly not list or for these products
Or other units that equipment is intrinsic.
Embodiment of the present utility model provides a kind of photovoltaic module fault monitoring system.
Fig. 3 is the schematic diagram of the photovoltaic module fault monitoring system according to this utility model first embodiment.Such as Fig. 3 institutes
Show, the system includes voltage monitor 10, data acquisition unit 20 and control terminal 30.
Voltage monitor is connected with photovoltaic module, for monitor photovoltaic module terminal voltage and according to terminal voltage generate
Analog voltage signal；Data acquisition unit is connected with voltage monitor, for according to predetermined period collection analog voltage letter
Number and photovoltaic module whether failure is judged according to analog voltage signal；Control terminal is connected with data acquisition unit, for adjusting
Whole predetermined period.
The photovoltaic module fault monitoring system that the embodiment is provided, by the voltage monitor being connected with photovoltaic module
The terminal voltage of monitoring photovoltaic module simultaneously generates analog voltage signal according to terminal voltage；The data being connected with voltage monitor are adopted
Acquisition means gather analog voltage signal according to predetermined period and judge photovoltaic module whether failure according to analog voltage signal；With number
The control terminal being connected according to harvester adjusts predetermined period, solve whether cannot judge in correlation technique photovoltaic module therefore
The problem of barrier, and then reached the monitor photovoltaic module whether effect of failure.
Preferably, photovoltaic module is multiple photovoltaic modulies；Voltage monitor be multiple voltage monitors, multiple voltages
Monitoring device is connected one to one with multiple photovoltaic modulies and is used for generating multiple analog voltage signals, wherein, multiple simulation electricity
Pressure signal is corresponded with the terminal voltage of multiple photovoltaic modulies.
Preferably, data acquisition unit is connected with multiple voltage monitors, and control terminal is used for according to multiple simulations
Voltage signal judges whether there is photovoltaic module failure in multiple photovoltaic modulies.
Preferably, in multiple voltage monitors, each voltage check device includes：Address scrambler, for determining itself
Address code；Data transmission module, is connected with address scrambler and control terminal, and each voltage monitor is also respectively used to
The address code of itself corresponding photovoltaic module is sent when analog voltage signal is sent；Control terminal is additionally operable to according to multiple moulds
Intend determining, after voltage signal is judged to have photovoltaic module failure in multiple photovoltaic modulies, the photovoltaic for breaking down according to address code
Component.
Preferably, multiple photovoltaic modulies include target photovoltaic module, and the first analog voltage signal is monitoring objective photovoltaic group
The analog voltage signal that part is generated, data acquisition unit include：Sampling module, is connected with multiple voltage monitors, is used for
Collection analog voltage signal；Time block, is connected with sampling module, for regularly sending sampled signal, wherein, sampled signal
For indicating that sampling module executes collection；Fault diagnosis module, is connected with sampling module, for judging that the first analog voltage is believed
Number predetermined voltage threshold is less than whether, if it is judged that the first analog voltage signal judges the first mould less than predetermined voltage threshold
Intend whether voltage signal exceedes default error threshold with the error of reference voltage signal, wherein, reference voltage signal is according to many
The reference voltage signal that individual analog voltage signal determines；If it is judged that the mistake of the first analog voltage signal and reference voltage signal
Difference exceedes default error threshold, determines target photovoltaic component faults.
Preferably, data acquisition unit also includes：Memorizer, is connected with sampling module, for being obtained according to present sample
The analog voltage signal for arriving updates historical data base, and wherein, historical data base is used for storing what sampling within preset duration was obtained
Analog voltage signal.
Preferably, voltage monitor includes：Reducing transformer, for reducing the magnitude of voltage of terminal voltage.
Preferably, voltage monitor includes：Voltage comparator, is connected with reducing transformer, for the end after according to reduction
The magnitude of voltage of voltage determines the interval residing for the magnitude of voltage of terminal voltage.
Preferably, voltage monitor includes：Signal coder, is connected with voltage comparator, for defeated according to interval
Go out analog voltage signal.
Preferably, voltage monitor also includes：Warning circuit, is connected with voltage comparator, for being pre- in interval
If sending warning when interval.
Fig. 4 is showing for the physical communication model of the photovoltaic module fault monitoring system according to this utility model second embodiment
It is intended to.As shown in figure 4, the physical communication model of the photovoltaic module fault monitoring system of embodiment offer is divided into three-level, one-level
Unit is the voltage monitor in monitoring rosette, namely above-mentioned first embodiment, and secondary unit is array data acquisition device,
Namely the data acquisition unit in above-mentioned first embodiment, three-level unit is square formation signal collection device, namely above-mentioned first real
Apply the control terminal in example.
A primary unit is installed behind each photovoltaic cell component, the power of each photovoltaic cell component is about
250～300W.Communicated by RS485 lines between primary unit and secondary unit.Secondary unit can be arranged on header box
Interior, each secondary unit controls the corresponding primary unit of all component that a header box confluxed.Secondary unit can be to control
All primary units transmission sample commands of system, and the voltage results of all primary units for being controlled are gathered, that is, monitoring connects
The result that line box is monitored to the terminal voltage of photovoltaic cell component.Secondary unit is carried out to the data that each primary unit sends
Process, preliminarily judged, if it find that abnormal, then warning message is reported to by way of wireless telecommunications three-level list
Unit.
Voltage sensor module and data transmission module can be included in monitoring rosette.Voltage sensor module is used for obtaining mark
The terminal voltage of quasi- photovoltaic module, output are suitable for the voltage signal by a small margin that data transmission module is used；Data transmission module is used for
Digital collection is carried out to the analog voltage signal that voltage sensor module is exported, is sent by RS485 lines.Each photovoltaic module
On monitoring rosette be the first order, as the installation per 250～300Wp is accomplished by being equipped with a monitoring rosette, therefore need
Will cost squeeze and energy consumption as far as possible.Voltage monitor in the embodiment only needs to carry out one every a period of time to voltage
Secondary stepping, and send the information comprising stepping result of 1 byte.1mW, specific consumption are less than through laboratory test average energy consumption
Below 4/100000ths.
Array data acquisition device includes data acquisition module, data pre-analysis module and signal transmitting module, for timing
From voltage monitoring box collection voltages signal, judge it is that or photovoltaic cell group is blocked or weak due to failure by preliminary analyses
The warning message of failure exception if it is determined that there is failure, is then passed through nothing by photovoltaic cell group output voltage exception caused by light
Line signal sends.The array data acquisition device arranged near header box is the second level, can control about 100～200 prisons
Control device, realizes short distance communication using the RS485 of low cost, and preliminary event realized by built-in single-chip microcomputer in array data acquisition device
Barrier judges, significant fault message is screened, the third level, namely square formation signal collection device is wirelessly transmitted to.
Array data acquisition device can also pass through receiving and transmitting signal successively, position the light for breaking down using feedback time difference
Photovoltaic cell components, the mode of this positioning failure is without the need for geocoding.
Square formation signal collection device is used for carrying out geocoding to each voltage monitoring box, and collects, collects and analyze battle array
The fault message that column data Acquisition Circuit sends, timing form form.Alternatively, the system that the embodiment is provided can also include
Remote terminal, square formation signal collection device are used for sending form to remote terminal.Square formation signal collection device is placed on inversion
Device room, can control about 10～20 data acquisition units, using PC processor, realize depth analysis, arrangement and the storage of data
Deposit, with user's visualization interface, conveniently patrol and examine staff and quickly check, and form is aggregated into by long-range end by optical fiber
End.
Voltage of the photovoltaic module fault monitoring system that the embodiment is provided by real-time monitoring photovoltaic battery panel, and pass through
Data acquisition unit determines the component for breaking down, and judges whether to need to change, and the light of MW class can be independently monitored
Volt square formation, it is also possible to be combined to realize the monitoring to whole power station by multiple systems.
Short distance wire communication and wireless telecommunications are combined by three layers of communication structure, can in terms of two reduces cost, one
It is so that the watch-dog on each component is as simple as possible, two is to reduce communication cost.By the end of photovoltaic cell component
Voltage judges photovoltaic cell component whether failure, can adopt the method amount of compressed data of voltage stepping, by array data
Harvester is sampled according to prefixed time interval timing to reduce history data store amount.Between primary unit and secondary unit
Communication can also without RS485, can adopt CAN or other low cost, the wire communication mode of narrow bandwidth.By two grades of lists
Simple judgement is placed on secondary unit by the division of labor mode of communication and data processing between unit and three-level unit, will be detailed
Data statisticss and process are placed on three-level unit, can compress communication data amount, and reduce the hardware cost of secondary unit.
Fig. 5 is the principle schematic of the photovoltaic module fault monitoring system according to this utility model 3rd embodiment.Such as Fig. 5
Shown, the back end of the photovoltaic module fault monitoring system that the embodiment is provided has three layers, three block diagrams from left to right according to
Secondary for voltage monitoring box (that is, the monitoring rosette in above-mentioned second embodiment), array data acquisition device and square formation signal are received
Acquisition means.Voltage monitoring box includes voltage comparator, signal coder, voltage insulation blocking, hand switch, photoelectric alarm signal
Etc. multiple circuit modules, the segmentation so as to realize voltage is compared, the prompting of Signal coding, security protection and photosignal, conveniently more
Substitution person is quickly found out target element.Array data acquisition device is included with lower module：Timing voltage patrol adopt, short time historical data
Storage is (for judging), whether failure judgement occurs, Signal coding, protection cut-out monitoring rosette.Wherein failure judgement occurs
Method be：When low voltage value occurs in component, compared judgement according to historical information, so as to reject false fault-signal.Side
Battle array signal collection device includes following functions：Send daily start/stop machine signal, failure system to daily each array data acquisition device
Meter, data storage and call, visualization interface, power station ruuning situation intellectual analysis, change monitoring arrange (for example, the sampling interval,
Judgment threshold etc.), initialization operation (for example, IP address distribution, parameter presets etc.).Voltage monitoring box and array data are adopted
Communication relations between storage are：Harvester sends sample command successively to each monitor box having under its command, and monitor box receives order
Post-sampling, and according to sampling order send sampled result (voltage data) back production storage, voltage data can be carried out stepping with
The transmission quantity of reduction voltage data, can reach 2bits, send sampled result according to sampling order and array data can be caused to adopt
Storage judges Position Number, the corresponding photovoltaic module of identification sampled result.Array data acquisition device and square formation signal collection device
Between communication relations be：Collection device is responsible for each harvester unification carries out geocoding (initialization), same tranmitting data register school
Positive signal and change controlling of sampling arrange parameter, array data acquisition device can send alarm signal (failure when failure is found
Type, position, degree), address code is to square formation signal collection device.
The photovoltaic module fault monitoring system cost that the embodiment is provided is well below Miniature inverter, miniature MPPT, phase
Compared with existing Miniature inverter and miniature MPPT products, when realizing connection due to Miniature inverter and miniature MPPT product neededs
Phase matched function, it is necessary to real-time sampling, analysis, and with header box or group string node carry out data communication, the number of communication
The output power information of component is contained according in, and output power information includes accurate voltage, current digital signal and every block of plate
Subaddressing is encoded, and volume of transmitted data is larger.And in the tertiary structure adopted by the embodiment, the most first order of usage quantity is
The voltage monitor of each component, the voltage monitor of each component only sample voltage data and export one 1～
The digital signal of 3bit, does not carry out Data Analysis Services, and the sampling interval is also longer, and volume of transmitted data is less, and circuit is very simple
Single, for the requirement of communication chip and data wire is greatly reduced, magnitude of voltage size will be compared and fault analysis and judgement function is put
Carry out in less than the 1/20 of quantity only first order secondary unit, hardware and maintenance cost can be substantially reduced, while
Reduce energy consumption.
Fig. 6 is the internal structure schematic diagram of the voltage monitor according to this utility model embodiment.As shown in fig. 6, light
The positive and negative polar curve of volt component, including photovoltaic module+polar curve and photovoltaic module-polar curve, after accessing box, by HVDC line with
Other components series connection in photovoltaic arrays, HVDC line include high-voltage positive electrode and high voltage negative, eliminate in figure switch and every
From protection, transformator, from power taking on the positive and negative polar curve of photovoltaic module, is power electronics by low-voltage power supply line.Electronic circuit
Including voltage monitoring module and RS485 chips, RS485 chips can be modulated to signal and send, monitoring signal is passed through
RS485 lines send.
Fig. 7 is that the mounting means of the voltage monitor and data acquisition unit according to this utility model embodiment is illustrated
Figure.As shown in fig. 7, pasting voltage monitor by the rosette of each component, the positive and negative polar curve of photovoltaic module accesses voltage
Monitoring device, using the voltage on the positive and negative polar curve of photovoltaic module as monitoring signals, and can power for other circuit modules.Number
Header box adnexa, the side that power taking is powered for control circuit from header box is arranged on as power supply, power taking side according to harvester
(weak-feedback side of transmission line).Voltage monitor can also carry out wiring using the mode of connection different from Fig. 7, for example, be integrated into photovoltaic
The junction box of component.
It should be noted that can be in such as one group of computer executable instructions the step of the flow process of accompanying drawing is illustrated
Execute in computer system, and, although show logical order in flow charts, but in some cases, can be with not
The order being same as herein executes shown or described step.
Preferred embodiment of the present utility model is the foregoing is only, this utility model is not limited to, for this
For the technical staff in field, this utility model can have various modifications and variations.All of the present utility model spirit and principle
Within, any modification, equivalent substitution and improvements that is made etc. are should be included within protection domain of the present utility model.
Claims (10)
1. a kind of photovoltaic module fault monitoring system, it is characterised in that include：
Voltage monitor, is connected with photovoltaic module, for monitor the photovoltaic module terminal voltage and according to the end electricity
Pressure generates analog voltage signal；
Data acquisition unit, is connected with the voltage monitor, for gathering the analog voltage letter according to predetermined period
Number and the photovoltaic module whether failure is judged according to the analog voltage signal；
Control terminal, is connected with the data acquisition unit, for adjusting the predetermined period.
2. system according to claim 1, it is characterised in that
The photovoltaic module is multiple photovoltaic modulies；
The voltage monitor is multiple voltage monitors, the plurality of voltage monitor and the plurality of photovoltaic module
Connect one to one and be used for generate multiple analog voltage signals.
3. system according to claim 2, it is characterised in that the data acquisition unit is filled with the plurality of voltage monitoring
Put and be connected.
4. system according to claim 3, it is characterised in that each voltage detecting dress in the plurality of voltage monitor
Put including：
Address scrambler, for determining the address code of itself；
Data transmission module, is connected with the address scrambler and the control terminal.
5. system according to claim 2, it is characterised in that the plurality of photovoltaic module includes target photovoltaic module, institute
Stating data acquisition unit includes：
Sampling module, is connected with the plurality of voltage monitor, for gathering the analog voltage signal；
Time block, is connected with the sampling module, for regularly sending sampled signal；
Fault diagnosis module, is connected with the sampling module, for the analog voltage according to the plurality of voltage monitor
Signal judges the target photovoltaic module whether failure.
6. system according to claim 5, it is characterised in that the data acquisition unit also includes：
Memorizer, is connected with the sampling module, for the analog voltage signal more new historical number obtained according to present sample
According to storehouse.
7. system according to claim 1, it is characterised in that the voltage monitor includes：
Reducing transformer, for reducing the magnitude of voltage of the terminal voltage.
8. system according to claim 7, it is characterised in that the voltage monitor includes：
Voltage comparator, is connected with the reducing transformer, for the terminal voltage after according to reduction magnitude of voltage determine described
Interval residing for the magnitude of voltage of terminal voltage.
9. system according to claim 8, it is characterised in that the voltage monitor includes：
Signal coder, is connected with the voltage comparator, for according to the interval output analog voltage signal.
10. system according to claim 8, it is characterised in that the voltage monitor also includes：
Warning circuit, is connected with the voltage comparator, for sending warning when the interval is pre-set interval.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621021993.1U CN206023703U (en) | 2016-08-30 | 2016-08-30 | Photovoltaic module fault monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621021993.1U CN206023703U (en) | 2016-08-30 | 2016-08-30 | Photovoltaic module fault monitoring system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106160660A (en) * | 2016-08-30 | 2016-11-23 | 中国华能集团清洁能源技术研究院有限公司 | photovoltaic module fault monitoring system |
| CN108696249A (en) * | 2017-04-11 | 2018-10-23 | 丰郅(上海)新能源科技有限公司 | Photovoltaic module Fault Quick Diagnosis method |
| CN113098391A (en) * | 2021-03-19 | 2021-07-09 | 江苏固德威电源科技股份有限公司 | Group cascade DC arc fault detection device and method |
| CN114756082A (en) * | 2022-04-14 | 2022-07-15 | 帝森克罗德集团有限公司 | Maximum power tracking device of photovoltaic grid-connected inverter control system |
-
2016
- 2016-08-30 CN CN201621021993.1U patent/CN206023703U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106160660A (en) * | 2016-08-30 | 2016-11-23 | 中国华能集团清洁能源技术研究院有限公司 | photovoltaic module fault monitoring system |
| CN106160660B (en) * | 2016-08-30 | 2018-05-25 | 中国华能集团清洁能源技术研究院有限公司 | Photovoltaic module fault monitoring system |
| CN108696249A (en) * | 2017-04-11 | 2018-10-23 | 丰郅(上海)新能源科技有限公司 | Photovoltaic module Fault Quick Diagnosis method |
| CN108696249B (en) * | 2017-04-11 | 2021-05-14 | 丰郅(上海)新能源科技有限公司 | Rapid diagnosis method for faults of photovoltaic module |
| CN113098391A (en) * | 2021-03-19 | 2021-07-09 | 江苏固德威电源科技股份有限公司 | Group cascade DC arc fault detection device and method |
| CN114756082A (en) * | 2022-04-14 | 2022-07-15 | 帝森克罗德集团有限公司 | Maximum power tracking device of photovoltaic grid-connected inverter control system |
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