CN107112946A - Determine the method for the alignment error in the DC parts in PV power stations and for the combiner case for the DC parts for performing this method - Google Patents
Determine the method for the alignment error in the DC parts in PV power stations and for the combiner case for the DC parts for performing this method Download PDFInfo
- Publication number
- CN107112946A CN107112946A CN201480082198.0A CN201480082198A CN107112946A CN 107112946 A CN107112946 A CN 107112946A CN 201480082198 A CN201480082198 A CN 201480082198A CN 107112946 A CN107112946 A CN 107112946A
- Authority
- CN
- China
- Prior art keywords
- switch
- return line
- power
- switch unit
- combiner
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 73
- 238000005259 measurement Methods 0.000 claims abstract description 12
- 238000012545 processing Methods 0.000 claims description 40
- 238000013461 design Methods 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 2
- 238000012216 screening Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 description 13
- 230000008030 elimination Effects 0.000 description 8
- 238000003379 elimination reaction Methods 0.000 description 8
- 239000008186 active pharmaceutical agent Substances 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 230000000977 initiatory effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000010009 beating Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
- H02S50/10—Testing of PV devices, e.g. of PV modules or single PV cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/02016—Circuit arrangements of general character for the devices
- H01L31/02019—Circuit arrangements of general character for the devices for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/02021—Circuit arrangements of general character for the devices for devices characterised by at least one potential jump barrier or surface barrier for solar cells
-
- 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
Abstract
The method of the present invention is performed in the combiner case of the DC parts in PV power stations before being initiated, and form a kind of measuring circuit, wherein at least one of the direction of measurement DC electric current, the polarity of voltage or earth fault, and wherein measurement result is used for determining the alignment error in DC parts.
Description
Technical field
The present invention relates to the method and use of the alignment error in a kind of DC (direct current) part for determining PV (photovoltaic) power station
Combiner case in the DC parts for performing this method.
Background technology
Photovoltaic plant includes DC parts, and it has at least one combiner case (combiner box), and it is embodied as string group
Clutch case.String combiner case combines the DC electric current generated in multiple strings.Each string represents DC sources, and includes the PV being connected in series
Module, it is used to generate direct current, and it is fed into string combiner case.If DC parts include multiple string combiner casees, this
The DC electric current of combination is directly fed into inverter or into array combiner case by a little each of case, wherein the direct current combined
It is further combined.Indivedual one be connected in multiple DC inputs of string combiner case of each string, and/or string combiner case are every
Individual indivedual one be connected in multiple DC of array combiner case inputs of DC outputs.
Therefore, the installation kit of DC parts is electrically connected to the DC inputs of string combiner case containing wherein string and/or wherein gone here and there just
The step of pole and negative pole are electrically connected to the power and return line terminal of multiple DC inputs of string combiner case.Connection is using installation
Realize that it is independently mounted between a pole of string and the power or return line terminal of DC inputs in part.Therefore, DC portions are installed
Alignment error can be caused by dividing, and the different DC of the reverse connection of such as power and return line or the pole of string and string combiner case are defeated
The power and the erroneous association of return line terminal entered.
In such as A1 of EP 2282366 or US 2013/0264883 prior art literature and/or in prior International Patent
Application PCT/EP2013/070258 (2013 on September 27, submit) if described in have be embodied as string combiner case and-
It is applicable-is also embodied as the PV power stations of the combiner case of array combiner case.
The content of the invention
Therefore, it is an object of the present invention to provide the installation in realizing the DC parts in PV power stations before operation DC parts
The method of the determination of error, and the combiner case of DC parts is provided, it allows to perform this method.
These and other purposes are realized using the method for the alignment error in the DC parts for determining PV power stations, PV power stations
DC parts include multiple at least two DC sources, inputted with multiple at least two DC and for by the positive pole in each DC sources and negative
The combiner case for the mounting portion that pole is connected with the DC power inputted and is connected with return line terminal.This method is performed
Following steps：
(a) closed arrangement connects (its power line in the DC power lines terminals and combiner case inputted in multiple power lines
Between the busbar of road extend) in or multiple at least two return lines connect (its DC input return line terminal with
Extend between the return line busbar of combiner case) in multiple at least two first switch units at least one switching it is single
Member,
(b) closed arrangement is in multiple power or return line connection (connection does not include any of the first switch unit)
Multiple at least two second switch units a switch unit, to recognize one in DC sources and to define measuring circuit
(it includes second switch unit in recognized DC sources, the first switch unit that one closes and a closure),
(c) at least one of sense of current in the measuring circuit, the polarity of voltage and earth fault are measured,
(d) measurement is opened when measuring at least one in forward current, the correct polarity of voltage or no earth fault
Circuit, and another to remaining DC source repeats method and step (a) to (d), or
When at least one in the wrong polarity and earth fault for measuring reverse current, voltage, signal installation and miss
Difference and the startup for preventing combiner case, open combiner case, and repeat method and step after alignment error is eliminated
(a) to (d), and
(e) combiner case is discharged after each execution method and step (a) to (d) to DC sources is used in any alignment error
Operation in the case of non-existent.
Method according to the present invention allows to start nominal operation in combiner case (it can be string or array combiner case)
Alignment error in the before quick DC parts for positioning and removing PV power stations.It is therefore prevented that combiner case and its equipment from because
Fatal damage caused by alignment error.Because this method can be used such as switch unit and electric current, voltage or earth fault sensing
The remote-controllable component of part is performed, so can automatically perform and be seen at remote location according to the method for the present invention
Examine.
In order to save the execution time, according to the present invention method can work as the first switch unit it is each according to constitute with
Multiple first switch units, Yi Ji are closed in step (a) when the mode of the nominal current in disconnected at least each DC sources is to design
The of closure can be opened when short circuit current flow is measured in the current circuit including one and two the first switch unit in DC sources
One switch unit and it is capable of signaling that alignment error.
This method can electrically connect power and return line busbar before step (b) is performed.This method can held
Power and return line busbar are electrically connected after row step (b) and before sense of current is measured according to step (c).Should
Method can electrically connect power and return line after the polarity that the voltage between the two busbars is measured according to step (c)
Busbar.This method can also be worked as when measuring the reverse current according to step (d) before the second switch unit of closure is opened
Disconnect power and return line busbar.
This method can recognize the peace that second pole in the DC sources recognized is connected to the second switch unit in step (b)
The Part II of part is filled, measurement can include the first switch unit and the mounting portion of at least one closure in step (c)
Part I (the first pole of two poles in the DC sources recognized is connected to the first switch unit of closure by it) measurement electricity
Electric current in one section of road can store the first and second mounting portions as a pair to recognize the first installation part
Identity (identity).
This method can screen the storage pair for being associated with DC sources, and being capable of each checking whether for DC sources
Store a pair this source is connected in DC inputs.
It can include according to the combiner case of the method for the present invention for performing：
Multiple at least two DC inputs, wherein be each suitable for the electrical connection of one in multiple at least two DC sources,
For the DC outputs of the electrical connection of the other combiner case to DC parts or the inverter to PV power stations,
Power and return line busbar,
Multiple at least two first switch units, are arranged in multiple power lines connection (its power lines terminal inputted in DC
Extend between power lines busbar) in or be connected in multiple return lines (its in the DC return line terminals inputted and
Extend between return line busbar) in,
Multiple at least two second switch units, be arranged in multiple power or return line connection (it does not cut including any first
Change unit) in,
Multiple at least two current sensors, are associated with multiple first switch units,
Control and processing unit, for receiving output signal from the first and second switch units and multiple current sensors,
And for signal to be passed into the first and second switch units, and
Bridge member, it is electrically connected to power on side and is connected to return line busbar on another side, itself and control
System and processing unit enter row data communication, and its formed before being initiated for measure sense of current, the polarity of voltage and
One section of the circuit of at least one in the presence of earth fault.
Bridge member can include at least one in auxiliary switch, polarity of voltage sensor and ground fault detecting sensor
Individual, at least one wherein in auxiliary switch, polarity of voltage sensor and ground fault detecting sensor is electrically connected to one end
Power and return line busbar is electrically connected to the other end.Ground fault detecting sensor is maintained in ground potential.
Bridge member can be included in auxiliary switch and polarity of voltage sensor and ground fault detecting sensor extremely
It is few one.
Bridge member can only include auxiliary switch or polarity of voltage sensor.
Auxiliary switch can be designed as disconnecting switch, and the two-way mixing that can each be designed as of the first switch unit is opened
Close.Auxiliary switch can be designed as two-way hybrid switch, and the unidirectional mixing that can each be designed as of the first switch unit is opened
Close.
In order to reduce the size of auxiliary switch, resistor can be connected in series with auxiliary switch.
Brief description of the drawings
The example embodiment of DC combiner casees for performing the method according to the present invention is shown in drawings described below：
Fig. 1 is the schematic circuit diagram of the DC parts in the PV power stations including combiner case according to the present invention,
Fig. 2 is the zoomed-in view of the combiner case according to Fig. 1,
Fig. 3 is current measurement and the view of handover module of the mechanical layout of the combiner case according to Fig. 2,
Fig. 4 is the view of the control module of the mechanical layout of the combiner case according to Fig. 2, and
Fig. 5 to Fig. 9 is the DC circuit diagrams of five embodiments of the combiner case according to Fig. 2.
Summarize the reference symbol and its connotation used in accompanying drawing in list of numerals.In general, to similar or
The part of identity function gives same reference numeral.The embodiment is intended as example without that should limit the present invention.
Embodiment
PV power stations shown in Fig. 1 DC part include three it is multiple n go here and there S1, S2 ..., Sn, three string combiner casees
SCB, three power cable C and array combiner case ACB.Three it is multiple n string be each electrically coupled to three string combiner casees
The inputs of the n DC of one IS1, IS2 in SCB ..., one in ISn.Each string is DC sources, and it is in string combiner case SCB
Feed direct current.Each combiner case SCB combines the n direct current fed generated in n string.Resulting direct current passes through three
String combiner case SCB each DC outputs OS.Three string combiner case SCB each DC outputs are electrically connected to array combination
One in device case ACB three DC inputs IA1, IA2 and IA3.Each string combiner case is DC sources, and it is via array combiner
One in three power cable C in case ACB is come the direct current obtained by feeding.Combiner case ACB combines fed direct current.
Resulting direct current exports OA by array combiner case ACB DC, and it is electrically connected to the inverter in PV power stations.
DC parts can be included more or less than three string combiner case SCB and including more than one or do not include
Array combiner case ACB.N is the integer more than 2, and can be not at least first and second of combiner case SCB
With.Have been described above in the above prior art go here and there S1, S2 ..., Sn, go here and there combiner case SCB and array combiner case ACB one
As Design and Features.
Each string S1, S2 ..., Sn includes to be used to generating the multiple of direct current and is connected in series PV modules PM.Mounting portion S1+,
S2+ ..., Sn+ and/or S1-, S2- ..., Sn- will go here and there S1, S2 ..., Sn each positive pole and/or negative pole be connected to combiner
Case SCB n DC input IS1, IS2 ..., ISn.Mounted in pairs part, such as S1+ and S1- by n string and/or DC sources S1,
S2 ..., Sn each such as S1 positive pole and negative pole be connected to n DC inputs IS1, IS2 ..., ISn each power lines
Terminal and return line terminal.Mounting portion S1+, S2+ ..., S1- ... Sn- can be designed as flexible or rigid Ampereconductors,
It is by least one plug, screw rod or any electric current connection separable in addition or separates electric current and connects that (it is by DC sources
A pole be directly connected to the terminals of the DC of combiner case inputs) come be attached in DC sources one, a such as S1 pole and
It is attached to one, such as IS1 power or return terminal in DC inputs.
Each string combiner case SCB includes positive pole and negative pole, and it is arranged in DC outputs OS, and it passes through three power
One in cable C be electrically connected to array combiner case ACB three DC input IA1, IA2 and IA3 in one.Therefore, often
Individual string combiner case SCB works as DC sources to array combiner case ACB.
Four shown combiner case SCB are similar with ACB design.Fig. 2 shows three string combinations with zoomed-in view
One in device case SCB.Fig. 2 illustrate n DC input IS1, IS2 ..., ISn and DC export string combiner case SCB bags beside OS
Include power lines busbar A+ and return line busbar A-.Power lines busbar A+ by n power lines connect L1+,
L2+ ..., Ln+ be electrically connected to n DC input IS1 ... power lines terminal, and pass through power lines and connect L0+ electrical connections
OS power lines terminal is exported to DC.Return line busbar A- by n return line connect L1-, L2- ..., Ln- electricity
The return line terminal of n DC input is connected to, and L0- is connected by return line and is electrically connected to the line of return that DC exports OS
Road terminal.N power lines connection L1+, L2+ ..., Ln+ it is each in and/or n correspondence return line connect L1-,
L2- ..., Ln- it is each in arrange power lines switch unit B1+, B2+ ..., Bn+ and/or return line switch unit
B1-, B2- ..., Bn- and current sensor CS1+, CS2+ ..., CSn+ and/or CS1-, CS2- ..., CSn-.Each electric current
Sensor reaches the flowing for being enough to detect direct current (it flows in the current circuit including associated power or return line connection)
With the precision in direction.Main switch M switching list is arranged in power lines connect L0+ and/or in return line connects L0-
Member.
The combiner case SCB that goes here and there also includes bridge member D and combiner control and processing unit CU.Bridge member D is one
Power A+ is electrically connected on side, and is electrically connected to return line busbar A- on another side, and carry out it is following at least
One:Electrical connection disconnects two busbars A+ and A-, and measures the polarity of voltage between the two busbars or ground connection
Failure.As depicted in figs. 1 and 2, control unit CU from power and return line switch unit B1+, B2+ ..., B1- ..., Bn-,
Current sensor CS1+ ..., CSn+, CS1- ..., CSn-, main switch M power and return line switch unit and from bridge joint
Component D receives output signal.Control unit CU is handled and preserve received signal, and generation signal, tool
It is used for the switch unit, power and return line switch unit B1+, B2 for opening, close, preventing or opening main switch M for body
+ ..., B1- ..., Bn-, and be additionally operable to open-if applicable-or close switch in bridge-set D is provided.Therefore,
All these switches can be remotely controlled.
The control and processing unit CU combined with remote-controllable switch unit enables associated group clutch case, such as SCB or ACB
Run autostart routine (routine).Autostart routine can detect installation failure, and the inverse of such as power and return line connects
Connect or faulty string S1, S2 ..., Sn and/or faulty power cable C, if run in array combiner case ACB
Words.
In one in three string combiner case SCB operation start routine before, n go here and there S1 ..., Sn be electrically connected to this
The input IS1 of individual combiner case ..., ISn, and main switch M, all switch unit B1+ ... Bn+, B1- ..., Bn- and-
If applicable-switch for being arranged in bridge-set D is to open.
Before operation starts routine in array combiner case ACB, three multiple strings are electrically connected to association string combiner case
Three combiner case SCB output OS is electrically connected to array combiner case ACB's by SCB input, and three power cable C
Three inputs IA1, IA2 and IA3.Main switch M and all power and return line switch unit B1+, B2+ ..., B1- ...,
Bn- and-if applicable-switch being arranged in bridge-set D be open.
In order to determine the alignment error in the DC parts according to Fig. 1 PV power stations, in four combiner casees SCB and ACB
In any, largely identical method and step is performed.Typical case of the invention in the string combiner case SCB according to Fig. 2
In example, following method and step is performed：
(a) close multiple first switch units (its be power B1+ ... Bn+ or return line switch unit B1- ..., Bn-,
And/or its be arranged in power L1+, L2+ ..., in Ln+ or return line connect L1-, L2- ..., in Ln-) at least one
Individual switch unit, such as B1+,
(b) closing multiple second switch units, (it is arranged in any return line connection for not including the first switch unit
Or in power) switch unit, a such as B1-, to recognize one in DC sources, such as S1, and define and include
The DC sources (being herein S1) that are recognized, the first switch unit (being herein B1+) of closure and second closed
The measuring circuit of switch unit (being herein B1-),
(c) at least one of sense of current in the measuring circuit, the polarity of voltage and earth fault are measured,
(d) measurement electricity is opened when measuring at least one of forward current, the correct polarity of voltage or no earth fault
Road, and method and step (a) to (d) is repeated to another (being herein S2) in remaining DC source, or
When at least one in the wrong polarity and earth fault for measuring reverse current, voltage, signal installation and miss
Difference and the startup for preventing combiner case (being herein SCB), open combiner case, and repeat after alignment error is eliminated
Method and step (a) to (d) is carried out, and
(e) to DC sources it is each (be herein S1, S2 ..., Sn) perform and discharge combiner after method and step (a) to (d)
The operation that case is used in the case of any alignment error is non-existent.
" at least one switch unit of multiple at least two first switch units of closure " are using control and processing unit CU
Pass to first switch unit (such as B1+ or B1-), pass to two (such as B1+ and B2+ or B1- and B2-), biography
Pass more than two or pass to all first switch units (this means pass to all switch unit B1+ ..., Bn+ or
Person pass to all switch unit B1- ..., Bn-) trip signal realize.In each case, the first switch unit is arranged
Power L1+ ..., in Ln+ or return line connect L1- ..., in Ln-.
" switch units of multiple at least two switch units of closure " are passed only to using control and processing unit CU
Be arranged in do not include the first switch unit any plurality of power L1+ ..., Ln+ or return line connection L1- ..., in Ln
The trip signal of one the second switch unit (such as B1- or B1+) is realized.The closure identification of second switch unit, such as B1-
One (being herein S1) in DC sources, its identity is stored in control and processing unit CU.Closure further definition measurement
Circuit.The embodiment of measuring circuit is it is shown in fig. 2, and DC sources S1, mounting portion S1+, power lines including being recognized
L1+ is connected together with power lines switch unit B1+ and current sensor CS1+, power lines busbar A+, bridge-set, return
Circuit busbar A-, return line connect L1- together with return line switch unit B1- and current sensor CS1- and installation portion
Divide S1-.
" at least one for measuring the sense of current in the measuring circuit, the polarity of voltage and earth fault " uses above-mentioned
Current sensor CS1+ ..., CSn- at least one and using can comprising extra current sensor above-mentioned bridge-set D come
Realize.Current sensor and bridge-set D transmit measurement signal to control and processing unit CU.
" opening measuring circuit " passes at least one relay of measuring circuit (for example using control and processing unit CU
First or second switch unit) or in addition switch unit (such as auxiliary switch AS) (it is electrically connected to power lines on side
Busbar A+, and return line busbar A- is electrically connected on another side, and it is usually placed in bridge member D)
Trip signal is realized.
" preventing combiner case " (being herein SCB) is worked as using control and processing unit CU measures reverse current, voltage
Wrong polarity and earth fault at least one when at least to switch unit B+1, B2+ ..., B1- ..., Bn- and-such as
Fruit requires-also realized to the signal of main switch M and auxiliary switch AS transmission.This signal also makes reverse current or any
Other error current is interrupted.
" opening combiner case " and " release combiner case is used to operate " is forwardly listed using control and processing unit CU
Switch and the signal of switch unit transmission realize.If combiner case (being herein SCB) does not include main switch M, believe
The switch of DC parts number is delivered to, it is connected or the DC outputs (being herein OS) of open combinations device case and DC parts.
Method and step " release combiner case is used to operate " also can be manually implemented, it means that is ordered using the input of user
Make realizing：This order is able to confirm that the release signal automatically generated, and therefore, it is possible to initiate string and the DC portions in PV power stations
/ via combiner case connection.
Switch unit, such as B1+ and control and processing unit CU Basic Design are shown in Fig. 3 and/or Fig. 4.This
A little units are embodied as the mounting rail that module MS and MC are used to be installed on combiner case (being herein string combiner case SCB).Such as
Shown in Fig. 3, module MS includes power lines switch unit B1+, power lines connection L1+ and current sensor CS1+, and it is applied
L1+ is connected in power lines.Module MS also includes local control and processing unit LCU, and it is used to from unit, specifically cut
Change in unit B 1+ (identity, state), current sensor CS1+ and manual operation switch MOD and from outside, specifically from control
Make with processing unit CU to receive data-signal, and for switch unit B1+ and sending data-signal to unit CU.Number
Control unit CU will be passed to from the local control unit LCU data-signal DS sent according to interface IOL and will be single from control
The data-signal DS that first CU is sent passes to local control unit LCU.
Manual operation switch MOD realizes that the data-signal DS's of the input of signal manually generated and manual request is aobvious
Show.Local control unit LCU and/or control unit CU is typically implemented as microprocessor.
Fig. 4 shows module MC.This module connects including combiner control unit CU, manual operation switch MOS and data
Mouthful IOS, it is used for data sink, and (such as module MS or the switch unit including main switch M-if applicable-are carried
For the local control unit LCU of the module of the switch in bridge member D) transmit from control unit CU and manually operated MOS institutes
The data-signal sent.Data-interface IOS local control unit LCU also on side and manual operation switch MOD with it is another
Data-signal DS is transmitted between control unit CU on side.Manual operation switch MOS such as manual operation switch MOD realize manual raw
Into data-signal input and manual request data-signal DS display.
Fig. 5 to shown in Fig. 9 be combiner case SCB according to Fig. 2 five embodiments.In this five embodiments
In, power lines switch unit B1+, B2+ ..., Bn+ be designed as switch, its can constitute and interrupt DC sources (it means that string
S1, S2 ..., Sn it is each) at least nominal DC electric current, and return line switch unit B1-, B2- ..., Bn- is typically designed to
Disconnecting switch and be merely able to constitute electric current.In combiner case SCB modification embodiment, return line switch unit B1-,
B2- ..., Bn- can be implemented as the switch of at least nominal current for constituting and interrupting DC sources, and power lines switch unit
B1+, B2+ ..., Bn+ can be implemented as disconnecting switch.In additional embodiment, all power and return line switch unit B1
+ ..., Bn- can be implemented as switch for constituting and interrupting at least nominal DC electric current.According to Fig. 5, Fig. 6, Fig. 7 and Fig. 9
In four embodiments, above-mentioned current sensor CS1+, CS2+ ... CSn+, CS1-, CS2- ..., CSn- be applied to power neutralize/
Or return line connect L1+, L2+ ..., in Ln-, and in the embodiment according to Fig. 8, only current sensor CS1+, CS2
+ ..., CSn+ be arranged in power lines connection L1+ ..., in Ln+.
In the embodiment according to Fig. 5, bridge member D includes above-mentioned auxiliary switch AS.Power lines switch unit B1+,
B2+ ..., Bn+ be each designed as two-way hybrid switch, and therefore, it is possible to constitute and interrupt in the forward direction and reversely side
Upward DC nominal current.Auxiliary switch AS and switch unit B1-, B2- ..., each of Bn- be embodied as disconnecting switch.
Two-way hybrid switch and unidirectional hybrid switch (it shows in Fig. 6, Fig. 7 and Fig. 9) are designed as unidirectional hybrid switch samely.
In combiner case SCB this embodiment, start routine execution as follows：
(1) switch M and AS and switch unit B1+, B2+ ..., Bn+ and B1-, B2- ..., Bn- be to open.
(2) control and processing unit CU (only being shown in Fig. 1, Fig. 2 and Fig. 4) transmit trip signal to auxiliary switch AS
To close.
(3) unit CU also to all power lines switch unit B1+, B2+ ..., Bn+ transmit trip signal to close.
(4) if due to the first alignment error, string S1, S2 ... in one there is short circuit, then current sensor CS1
+ ..., CSn+ at least one to control and processing unit CU transmit short circuit current flow generation.Control and processing unit CU transmission
The signal of the first alignment error is indicated, and causes combiner case SCB prevention.Prevent comprising the switching list for reopening closure
First B1+ ... Bn+, to interrupt short circuit current flow.When mounting portion S1+ ..., Sn- mistakenly install (for example by first install
Partly the positive pole of DC sources (such as S1) is connected to DC and inputs IS1 power lines terminal by (such as S1+), and passes through the second installation portion
Divide (such as S1-) that the negative pole of DC sources (being herein S1) is connected into the power lines terminal that DC inputs IS2) when, this short-circuit energy
It is enough to occur.
(5) after the first alignment error is eliminated, unit CU transmits signal to open to combiner case, and makes combination
Device case repeats method and step listed hereinbefore.
(6) in the case of the first alignment error is non-existent, control unit CU transmits trip signal to switch unit B1-
To close.
(7) the switch unit B1- and DC sources (herein be string S1) of unit CU identifications closure, its first pole is across being known
Other the first installation part (herein by S1-) is electrically connected to the switch unit B1- recognized.
(8) unit CU stores switch unit B1-, string S1 and mounting portion S1- identity.
(9) B1- closure forms a kind of measuring circuit, and it is from the string S1 recognized the first pole across the first installation part
S1-, return line connection L1-, return line busbar with current sensor CS1- and return line switch unit B1-
A-, auxiliary switch AS, power lines busbar A+, with current sensor CS1+ ..., one in CSn+ (be herein CS2
+) and with power lines switch unit B1+ ..., the power lines connection L1 of one (being herein B2+) in Bn+
+ ..., the Part II (being herein S2+) of one (herein by L2+) in Ln and mounting portion extend to what is recognized
String S1 the second pole.
(10) if the first pole be go here and there S1 negative pole, current sensor detection measuring circuit in forward current, its from
Mounting portion S2+ flow to mounting portion S1-.
(11) control and processing unit CU notify forward current, and two mounting portions S1- and S2+ are identified as into pass
It is linked to a pair of string S1.This to identity be stored in control and processing unit CU in.
(12) then unit CU transmits trip signal to open to the switch unit B2+ of closure.This trip signal is with it
The time delay of forward current is interrupted to pass to switch unit B1- to open.Once switch unit B1- is to open, cut
Changing unit B 2+ can just be reclosed.
(13) control and processing unit CU transmit trip signal to switch unit B2-, to recognize the another of multiple DC sources
Outside, for example go here and there S2, and method and step (1) to (12) is repeated to switch unit B2- and string S2.
(14) in the same fashion, check that remaining is gone here and there.
(15) if the polarity of string 1 is reversion and/or if mounting portion S1- is connected to string S1 positive pole and installed
Part S2+ is connected to negative pole, then control and processing unit CU notify the reverse current flows in measuring circuit.Unit CU and then hair
Signal notifies the second alignment error, and transmits trip signal to open measuring circuit, it means that open power lines switching
Unit B 2+.In addition, unit CU causes the combiner case SCB prevented for operating, this realizes the elimination of alignment error.
(16) control and processing unit CU the second alignment error elimination it is rear to combiner case transmit open signal,
And initiating method step (1) repeating to (6).
(17) after method and step (1) to (16) is performed in the case of from any alignment error, release signal is certainly
Move (from unit CU) and/or manual (from user) passes to combiner case and be used to operate, and/or for opening auxiliary switch AS simultaneously
And for closing main switch M or any other switch unit with some time delay, wherein other switch units will be combined
Device case SCB DC outputs OS is connected to the DC parts in PV power stations.
In the embodiments of the invention according to Fig. 6, Fig. 7 and Fig. 9, auxiliary switch AS is embodied as two-way hybrid switch, with
And power lines switch unit B1+, B2+ ..., Bn+ be each embodied as unidirectional hybrid switch.It is less expensive and simple unidirectional
Hybrid switch is merely able to turn off direct current on a predefined direction, and more expensive two-way hybrid switch can be turned off any
The electric current that side is flowed up, it means that forward and reverse electric current.
These three combiner casees SCB each execution with according to Fig. 5 combiner case identical method and step (1), (3) extremely
(8).It is auxiliary in each according to the three of Fig. 6, Fig. 7 and Fig. 9 combiner case in addition in the combiner case according to Fig. 5
Switch AS is helped to close and/or can open measuring circuit, to constitute or interrupt the electric current in measuring circuit.Therefore, exist
In step (12) and/or step (15), instead of switch unit B1+, B2+ ..., auxiliary switch AS can be closed and/or open,
To constitute or interrupt the electric current in measuring circuit.
In addition in the combiner case according to Fig. 5, in the combiner case according to Fig. 6, method and step (2) (closure
Auxiliary switch AS) performed between method and step (8) and (9).Hereafter, method and step (10) and (11) is performed.Other method step
Suddenly it is similar or identical with to the method and step (12) to (17) performed by the string combiner case SCB according to Fig. 5, and following institute
State：
(12) unit CU transmits trip signal to open to the auxiliary switch AS of closure.This trip signal is wherein to interrupt just
Switch unit B1- is passed to the time delay of electric current to open.Once switching B1- is to open, auxiliary switch just can
It is reclosed.
(13) control and processing unit CU transmit trip signal to switch unit B2-, to recognize the another of multiple DC sources
Outside, for example go here and there S2, and method and step (1), (3) are repeated to (8) to switch unit B2- and string S2, (2), (9) are extremely
(12)。
(14) in the same fashion, check that remaining is gone here and there.
(15) if the polarity of string 1 is reversion and/or if mounting portion S1- is connected to string S1 positive pole and installed
Part S2+ is connected to negative pole, then control and processing unit CU notify the reverse current flows in measuring circuit.Unit CU and then hair
Signal notifies the second alignment error, and transmits trip signal to open measuring circuit, it means that open auxiliary switch AS.This
Outside, unit CU causes the combiner case SCB prevented for operating, and this realizes the elimination of alignment error.
(16) control and processing unit CU the second alignment error elimination it is rear to combiner case transmit open signal,
And initiating method step (1), (3) to (8), (2), (9) repeat to (16).
(17) in not any alignment error after method and step (1), (3) to (8), (2), (9) to (16) are performed
In the case of, release signal automatic (unit CU) and/or manually (user), which pass to combiner case, to be used to operate, and/or for beating
Open auxiliary switch AS and for closing main switch M or any other switch unit with some time delay, wherein other
Combiner case SCB DC outputs OS is connected to the DC parts in PV power stations by switch unit.
In addition in the combiner according to Fig. 6, also include polarity of voltage sensor VPS according to Fig. 7 combiner case,
It measures the polarity of the voltage between busbar A+ and A- when auxiliary switch AS is to open.
Combiner case SCB performs above method step (1) and (3) to (8), and also performs following method and step：
(9) according to step (6) switching B1- closure formation the first measuring circuit, its from the string S1 recognized the first pole across
The first installation part S1-, the return line connection L1- with current sensor CS1- and return line switch unit B1-, return
Circuit busbar A-, polarity of voltage sensor VPS, power lines busbar A+, with current sensor CS1+ ..., in CSn+
One and with power lines switch unit B1+ ..., the connection of the power lines of one L1+ in Bn+ ..., in Ln+
The Part II of one and mounting portion extends to recognized string S1 the second pole.
(10) if the first pole is to go here and there S1 negative pole, polarity of voltage sensor VPS measure two busbar A+ and A- it
Between voltage correct polarity.
(11) control and processing unit CU transmit trip signal to close to auxiliary switch AS.
(12) auxiliary switch AS closure the second measuring circuit of formation, it is from the string S1 recognized the first pole across first
Mounting portion S1-, return line connection L1-, return line with current sensor CS1- and return line switch unit B1-
Busbar A-, auxiliary switch AS, power lines busbar A+, with current sensor CS1+ ..., one in CSn+ (at this
In be CS2+) and with power lines switch unit B1+ ..., the power lines of one (being herein B2+) in Bn+ connect
Connect L1+ ..., the Part II (being herein S2+) of one (herein by L2+) in Ln and mounting portion extends to and knows
Other string S1 the second pole.
(13) due to the correct polarity of the voltage between two busbars A+ and A-, current sensor detection second is measured
Forward current in circuit, it flow to mounting portion S1- from mounting portion S2+.
(14) control and processing unit CU notify forward current, and two mounting portions S1- and S2+ are identified as into pass
It is linked to a pair of string S1.This to identity be stored in control and processing unit CU in.
(15) then unit CU transmits trip signal to open to the auxiliary switch AS of closure.This trip signal is with it
The time delay of forward current is interrupted to pass to switch unit B1- to open.Once switching B1- is to open, auxiliary is opened
Pass can be just reclosed.
(16) then control and processing unit CU transmit trip signal to switch unit B2-, to recognize multiple DC sources
In addition, for example go here and there S2, and method and step (1), (3) to (16) are repeated to switch unit B2- and string S1.
(17) in the same fashion, check that remaining is gone here and there.
(18) if the polarity of string 1 is reversion and/or if mounting portion S1- is connected to string S1 positive pole and installed
Part S2+ is connected to negative pole, then control and processing unit CU notify the wrong polarity of the voltage in the first measuring circuit.Unit CU
Then the second alignment error is signaled, and transmits trip signal to open the first measuring circuit and/or open switching list
First B1-.In addition, unit CU causes the combiner case SCB prevented for operating, this realizes the elimination of alignment error.
(19) control and processing unit CU the second alignment error elimination it is rear to combiner case transmit open signal,
And initiating method step (1), (3) repeat to (19).
(20) after method and step (1), (3) to (19) are performed in the case of not any alignment error, release letter
Number automatic (unit CU) and/or manually (user), which pass to combiner case, to be used to operate, and/or for opening auxiliary switch AS simultaneously
And for closing main switch M or any other switch unit with some time delay, wherein other switch units will be combined
Device case SCB DC outputs OS is connected to the DC parts in PV power stations.
In the embodiment according to Fig. 8, bridge member D only includes the pole for measuring the voltage between busbar A+ and A-
The polarity of voltage sensor VPS of property.Combiner case SCB performs above method step (1) and (3) to (8), and then also performs
Following method and step：
(9) form a kind of measuring circuit according to the switching B1- of step (6) closure, its from the string S1 recognized the first pole across
The first installation part S1-, return line connection L1-, return line busbar A-, polarity of voltage with switch unit B1- are passed
Sensor VPS, power lines busbar A+, with current sensor CS1+ ..., one in CSn+ and cut with power lines
Change unit B 1+ ..., the connection of the power lines of one L1+ in Bn+ ..., second of one in Ln+ and mounting portion
Divide the second pole for extending to recognized string S1.
(10) if the first pole is to go here and there S1 negative pole, polarity of voltage sensor VPS measure two busbar A+ and A- it
Between voltage correct polarity.
(11) control and processing unit CU notify voltage correct polarity, and to multiple switch unit B1+ ..., Bn+
Trip signal is transmitted to open and then close in succession these switch units, to measure the voltage in measuring circuit just
True polarity, wherein one (being herein B2+) in the switch unit closed in succession recognizes string S1 the second pole and/or the second peace
Dress part (being herein S2+).
(12) control and processing unit CU storages as a pair of first (being herein S-) and the second mounting portion (
Here be S2+) identity.
(13) unit CU transmits trip signal to open to the switch unit B1- of closure, and to multiple switch unit B1
+, B2+ ... transmission trip signal is to close.
(14) control and processing unit CU transmit trip signal to close to switch unit B2-, to recognize multiple DC sources
In addition, for example go here and there S2, and method and step (1), (3) to (14) are repeated to switch unit B2- and string S2.
(15) in the same fashion, check that remaining is gone here and there.
(16) if the polarity of string 1 is reversion and/or if mounting portion S1- is connected to string S1 positive pole and installed
Part S2+ is connected to negative pole, then control and processing unit CU notify the wrong polarity of the voltage in measuring circuit.Unit CU is then
The second alignment error is signaled, and transmits trip signal to open measuring circuit, it means that switch unit B1- is opened
And/or multiple switch unit B1+ ..., Bn+.In addition, unit CU causes the combiner case SCB prevented for operating, this realizes peace
Fill the elimination of error.
(17) control and processing unit CU the second alignment error elimination it is rear to combiner case transmit open signal,
And cause method and step (1), (3) to repeat to (17).
(18) after method and step (1), (3) to (17) are performed in the case of not any alignment error, release letter
Number automatic (unit CU) and/or manually (user), which pass to combiner case, to be used to operate, and/or for being come with some time delay
Main switch M or any other switch unit are closed, combiner case SCB DC outputs OS is connected to by wherein other switch units
The DC parts in PV power stations.
In the embodiment according to Fig. 9, bridge member D includes resistor R, and it is connected in series with auxiliary switch AS.Resistance
Device R is reduced in measuring circuit and is therefore reduced the electric current in auxiliary switch AS.This is inverted auxiliary switch AS cost reduction.Bridge
Connection member D also includes ground fault detecting sensor GF, and it is so that one end is electrically connected to power (A+) and is electrically connected to the other end
Return line busbar (A-), and it is maintained in ground potential.Sensor GF signals the presence of earth fault.
In the combiner case according to Fig. 9, it is able to carry out according to the method for the present invention described in the combiner case according to Fig. 7
Method and step, still, wherein instead of the wrong polarity of the voltage between busbar A+ and A-, unit CU is notified from earth fault
The existence or non-existence for the earth fault that detection sensor GF is signaled.
In above-described embodiment according to Fig. 5 to Fig. 9 combiner case, multiple first switch unit B1+ ..., Bn+ and/
Or B1- ..., Bn- define measuring circuit before close.Perform the method according to the present invention in a dc portion before startup
When, this saves run time.
If only one is closed before measuring circuit is defined in the first switch unit, it is able to carry out according to the present invention's
Method so that after one in closing the first switch unit, multiple second switch units are closed and opened in succession, so as to
Measuring circuit, its each DC source for including multiple DC sources and each combination of switch unit are formed, it includes one first and one
Individual second switch unit.This needs the more time, but avoids determining that the first alignment error is (multiple using additional method step
The short circuit of first switch unit) additional effort.When for correspondence string no switch unit pair will be found, first is also found that
Plant alignment error.
List of reference characters
A+ power lines busbars
A- return line busbars
ACB array combiner casees
B1+, B2+ ..., Bn+ power lines switch units
B1-, B2- ..., Bn- return line switch units
C power cables
CU is controlled and processing unit
CS1+, CS2+ ..., CSn+,
CS1-, CS2- ..., CSn- current sensors
D bridge members
DS data-signals
GF ground fault detecting sensors
IA1, IA2 ..., the DC of Ian array combiner casees input
IOL, IOS data-interface
IS1, IS2 ..., ISn string combiner case DC input
L0+, L1+, L2+ ..., Ln+ power lines connection
L0-, L1-, L2- ..., Ln- return lines connection
LCU is locally controlled and processing unit
M main switches
MC, MS module
MOD, MOS manual operation switch
The DC outputs of OA array combiner casees
The DC outputs of OS string combiner casees
PM photovoltaic modules
R resistors
S1, S2 ..., Sn string, DC sources
S1+, S2+ ..., Sn+ mounting portions
S1-、S2-、…、Sn-
SCB string combiner casees, DC sources
VPS polarity of voltage sensors
PM PV modules
Claims (15)
1. a kind of method for being used for determining the alignment error in the DC parts in PV power stations, the DC parts in the PV power stations are including multiple
At least two DC sources (S1, S2 ...), with multiple at least two DC inputs (IS1, IS2 ... IA1, IA2 ...) and with use
In the peace that the positive pole and negative pole in each DC sources are connected with the DC power inputted and be connected with return line terminal
Dress part (S1+, S2+ ..., S1-, S2- ...) combiner case (SCB, ACB), it is characterised in that following method and step：
(a) closed arrangement is connected in multiple power lines in (L1+, L2+ ...) or connected in multiple at least two return lines
Connect in (L1-, L2- ...) multiple at least two first switch units (B1+, B2+ ..., B1- ..., Bn-) at least one cut
Change unit (B1+), the multiple power lines be connected to the power lines terminals of the DC inputs (IS1 ...) with it is described
Extend between the power lines busbar (A+) of combiner case, the return line is connected to the institute of DC input (IS1 ...)
State and extend between return line terminal and the return line busbar (A-) of the combiner case (SCB),
(b) closed arrangement the multiple power or return line connection (L1-, L2- ..., L1+ ...) in multiple at least two
Individual second switch unit (B1-, B2- ..., B1+ ..., Bn+) a switch unit (B1-), to recognize in the DC sources
One (S1) and measuring circuit is defined, the first switching that the measuring circuit is closed including recognized DC sources (S1), one
Unit (B1+) and one closure the second switch unit (B1-), it is described connection include first switch unit (B1+ ...,
B1- ...) it is any,
(c) at least one of sense of current in the measuring circuit, the polarity of voltage and earth fault are measured,
(d) the measurement electricity is opened when measuring forward current, the correct polarity of the voltage or no earth fault
Road, and methods described step (a) to (d) is repeated to another (S2) in remaining DC source, or
When measuring at least one in reverse current, the wrong polarity and earth fault of the voltage, peace is signaled
Dress error and the startup for preventing the combiner case (SCB), the combiner case is opened after the alignment error is eliminated
(SCB), and methods described step (a) to (d) is repeated, and
(e) combination is discharged after each execution methods described step (a) to (d) to the DC sources (S1, S2 ...)
The operation that device case (SCB) is used in the case of any alignment error is non-existent.
2. the method as described in claim 1, it is characterised in that
It is each according to constituting and interrupt each at least nominal of the DC sources (S1, S2 ...) when first switch unit
When the mode of electric current is to design in the step (a) the multiple first switch unit of closure (B1+ ...), and including described
Opened when measuring short circuit current flow in the current circuit of one in DC sources (S1) and two the first switch units (B1+, B2+ ...)
The first switch unit (B1+, B2+ ...) for being closed and signal alignment error.
3. the method as described in any in claim 1 or 2, it is characterised in that
The power (A+) and the return line busbar (A-) are electrically connected before step (b) is performed.
4. the method as described in any in claim 1 or 2, it is characterised in that
The work(is electrically connected after step (b) is performed and before the direction of the electric current is measured according to step (c)
Rate (A+) and the return line busbar (A-).
5. method as claimed in claim 4, it is characterised in that
The power (A+) is electrically connected after the polarity of the voltage is measured according to step (c) and the return line converges
Flow bar (A-).
6. the method as described in any in claim 3 to 5, it is characterised in that
Disconnected when reverse current of the measurement according to step (d) before closed the second switch unit (B1-) is opened described
Power (A+) and the return line busbar (A-).
7. the method as described in any in claim 1 to 6, it is characterised in that
The Part II (S1-) of the identification mounting portion in step (b), it connects second pole in the DC sources (S1) recognized
Second switch unit (B1-) is connected to,
In the step (c) measurement include at least one closure the first switch unit (B1+) and the mounting portion the
The electric current in one section of one (S1+) measuring circuit, to recognize first (S1+) mounting portion, it will be recognized
DC sources (S1) the two poles of the earth the first pole be connected to closed the first switch unit (B1+) and
Store described first (S1+) and the identity of second mounting portion (S1-) as a pair.
8. method as claimed in claim 7, it is characterised in that
Screening is associated with pair stored in the DC sources (S1, S2 ...), and
For the DC sources (S1 ...) it is each come check whether it is stored by this source be connected to the DC inputs (IS1,
IS2 ...) in a pair (S1+, the S1-) of one.
9. a kind of combiner case (SCB, ACA) for being used to perform the method as described in claim 1 in the DC parts in PV power stations,
Including：
Multiple at least two DC input (IS1, IS2 ...;IA1, IA2 ...), its each (IS1) is suitable for multiple at least two
The electrical connection of one (S1) in individual DC sources (S1, S2 ...),
DC for the electrical connection of the other combiner case (ACA) to the DC parts or the inverter to the PV power stations is defeated
Go out OS, OA),
Power (A+) and return line busbar (A-),
Multiple at least two first switch units (B1+, B2+ ...), are arranged in multiple power lines connections (L1+, L2+ ...)
Or in multiple return lines connection (L1-, L2- ...), the power lines are connected to the DC inputs (IS1, IS2 ...)
Power lines terminal and the power lines busbar (A+) between extend, the return line is connected to DC input
Extend between the return line terminal and the return line busbar (A-) of (IS1 ...),
Multiple at least two second switch units (B1-, B2- ...), are arranged in the multiple power or return line connection
In (L1-, L2- ...), the connection does not include any first switch unit (B1+),
Multiple at least two current sensors (CS1+, CS2+ ...), are associated with the multiple first or the multiple second and cut
Unit is changed, and
Control and processing unit (CU), for from described first and second switch unit (B1+ ..., B1- ...) and institute
Multiple current sensors (CS1+, CS2+ ...) are stated to receive output signal, and for signal to be passed into described first and the
Two switch units, it is characterised in that
The combiner case also includes bridge member (D), and it is electrically connected to the power (A+) and in opposite side on side
On be electrically connected to the return line busbar (A-), its with it is described control and processing unit (CU) enter row data communication, and
Its formed before being initiated for measure sense of current, the polarity of voltage and earth fault presence in the electricity of at least one
One section of road.
10. combiner case as claimed in claim 9, it is characterised in that
The bridge member (D) includes auxiliary switch (AS), polarity of voltage sensor (VPS) and ground fault detecting sensor
(GF) at least one in, wherein the auxiliary switch, the polarity of voltage sensor and the ground fault detecting sensor
In at least one the power (A1) is electrically connected to one end and the return line busbar is electrically connected to the other end
(A-)。
11. combiner case as claimed in claim 10, it is characterised in that
The bridge member (D) includes the auxiliary switch (AS) and the polarity of voltage sensor (VPS) and the ground connection
At least one in failure detection sensor (GF).
12. the combiner case as described in any in claim 10 or 11, it is characterised in that
The bridge member (D) only includes the auxiliary switch or the polarity of voltage sensor.
13. the combiner case as described in any in claim 10 to 12, it is characterised in that
The auxiliary switch (AS) is designed as disconnecting switch, and each (B1+) of first switch unit (B1+ ...) is set
It is calculated as two-way hybrid switch.
14. the combiner case as described in any in claim 10 or 13, it is characterised in that
The auxiliary switch (AS) is designed as two-way hybrid switch, and
Each (B1+) of first switch unit is designed as unidirectional hybrid switch.
15. the combiner case as described in any in claim 10 to 14, it is characterised in that
Resistor (R) is connected in series with the auxiliary switch.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2014/070404 WO2016045725A1 (en) | 2014-09-24 | 2014-09-24 | A method to determine an installation error in a dc part of pv plant and a combiner box of the dc part for performing the method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107112946A true CN107112946A (en) | 2017-08-29 |
Family
ID=51626519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480082198.0A Pending CN107112946A (en) | 2014-09-24 | 2014-09-24 | Determine the method for the alignment error in the DC parts in PV power stations and for the combiner case for the DC parts for performing this method |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3210243A1 (en) |
| JP (1) | JP6211739B1 (en) |
| CN (1) | CN107112946A (en) |
| WO (1) | WO2016045725A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109565245B (en) * | 2016-08-12 | 2021-07-09 | 马里奇控股荷兰有限公司 | Restoration of deteriorated photovoltaic panels |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120050924A1 (en) * | 2010-08-24 | 2012-03-01 | Sanyo Electric Co., Ltd. | Current collecting box for photovoltaic power generation |
| CN102761294A (en) * | 2011-04-29 | 2012-10-31 | 通用电气公司 | Switching coordination of distributed DC-DC converters for highly efficient photovoltaic power plants |
| JP2012244852A (en) * | 2011-05-23 | 2012-12-10 | Toshiba Corp | Ground fault detection apparatus for photovoltaic power generation system |
| CN103229063A (en) * | 2010-11-29 | 2013-07-31 | 吉坤日矿日石能源株式会社 | Ground fault detection device, ground fault detection method, solar energy generator system, and ground fault detection program |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010042643A2 (en) * | 2008-10-07 | 2010-04-15 | Solaratek | Photovoltaic module monitoring system |
| DE102010011476A1 (en) * | 2010-03-16 | 2011-09-22 | Adensis Gmbh | Insulation test method for large photovoltaic plants |
| GB2498365A (en) * | 2012-01-11 | 2013-07-17 | Solaredge Technologies Ltd | Photovoltaic module |
| US8587906B2 (en) * | 2012-04-05 | 2013-11-19 | Eaton Corporation | Photovotaic system including hybrid bi-directional DC contactors and method of detection and isolation of faults therein |
-
2014
- 2014-09-24 JP JP2017516126A patent/JP6211739B1/en active Active
- 2014-09-24 EP EP14776845.1A patent/EP3210243A1/en not_active Withdrawn
- 2014-09-24 WO PCT/EP2014/070404 patent/WO2016045725A1/en active Application Filing
- 2014-09-24 CN CN201480082198.0A patent/CN107112946A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120050924A1 (en) * | 2010-08-24 | 2012-03-01 | Sanyo Electric Co., Ltd. | Current collecting box for photovoltaic power generation |
| CN103229063A (en) * | 2010-11-29 | 2013-07-31 | 吉坤日矿日石能源株式会社 | Ground fault detection device, ground fault detection method, solar energy generator system, and ground fault detection program |
| CN102761294A (en) * | 2011-04-29 | 2012-10-31 | 通用电气公司 | Switching coordination of distributed DC-DC converters for highly efficient photovoltaic power plants |
| JP2012244852A (en) * | 2011-05-23 | 2012-12-10 | Toshiba Corp | Ground fault detection apparatus for photovoltaic power generation system |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3210243A1 (en) | 2017-08-30 |
| JP6211739B1 (en) | 2017-10-11 |
| WO2016045725A1 (en) | 2016-03-31 |
| JP2017532940A (en) | 2017-11-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8749934B2 (en) | Reverse current sensor | |
| CN108475928B (en) | Inverter with grid disconnection point and insulation resistance measurement and method for measuring insulation resistance | |
| CN107666140B (en) | A kind of combined DC breaker and its control method with multiple terminals | |
| CN108233495A (en) | Charging system and its control method | |
| CN112636694B (en) | Photovoltaic power generation system and method | |
| US20140137920A1 (en) | Photovoltaic module | |
| US20150194801A1 (en) | Reverse current fault prevention in power combination of solar panel array systems | |
| CN108696155B (en) | The fault detection method of converter apparatus and power component | |
| WO2011157306A1 (en) | Breaker failure protection of hvdc circuit breakers | |
| CN105652148A (en) | System and method for detecting ground fault in DC system | |
| CN106936177B (en) | Charging device and charging method for a high-voltage battery of a motor vehicle | |
| CN103986192A (en) | Non-isolation type photovoltaic grid-connected inverter and photovoltaic grid-connected power generation system | |
| EP3046196A1 (en) | A method of clearing a fault in a HVDC electrical network | |
| US20150171615A1 (en) | Breaker circuit configurations for multi-terminal DC systems | |
| CN109565275A (en) | Distribution system and method | |
| CN103176098B (en) | Connector mistake junction detection system | |
| CN107112946A (en) | Determine the method for the alignment error in the DC parts in PV power stations and for the combiner case for the DC parts for performing this method | |
| US9718526B2 (en) | Boat with high-voltage system | |
| EP2963760A1 (en) | Ground potential equalization for photovoltaic power generation system | |
| CN109921622A (en) | Realize the circuit and system for being configured for preventing the power supply of spark | |
| CN209542782U (en) | A kind of discharge circuit fault detection means | |
| CN104685749A (en) | Circuit configuration with an inverter | |
| CN206584199U (en) | A kind of novel permanent magnetic mechanics controller of primary cut-out | |
| CN109444722A (en) | A kind of discharge circuit fault detection means and its method for detecting failure | |
| CN104578004A (en) | Quick low-voltage power supply fault isolating device with automatic load balance function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20191022 |