CN206117592U - Manifold device of cancellation direct current fuse - Google Patents
Manifold device of cancellation direct current fuse Download PDFInfo
- Publication number
- CN206117592U CN206117592U CN201621034664.0U CN201621034664U CN206117592U CN 206117592 U CN206117592 U CN 206117592U CN 201621034664 U CN201621034664 U CN 201621034664U CN 206117592 U CN206117592 U CN 206117592U
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- China
- Prior art keywords
- fuse
- collector
- shoe gear
- counnter attack
- direct current
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The utility model discloses a manifold device of cancellation direct current fuse establishes ties one after the inward -remittance all the way of per two strings of photovoltaic cell boards among the the device and prevents anti - diode, preventing the parallelly connected back output each other of anti - diode, not only having realized the function of converging, cancelled the direct current fuse moreover, connect when the trouble such as turning over at short circuit or photovoltaic cell board, the electric current that flows through the device logical OR circuit be photovoltaic cell board short -circuit current, and takes place anti - phenomenon of the same kind, the reliability height of irritating of multichannel when can be like multichannel photovoltaic board parallelly connected, simultaneously, the manifold device front end still is provided with a plurality of switching device, has increased the reliability, the manifold device outlet side can remove direct current breaker, the cost is reduced.
Description
Technical field
The utility model is related to field of photovoltaic power generation, more particularly to a kind of collector-shoe gear for cancelling DC fuse.
Background technology
Large-scale ground photovoltaic plant is typically confluxed using header box, then through photovoltaic inverter grid-connected, and header box one
As using DC fuse be DC insurance silk as error protection means, but a series of asking is brought using DC fuse
Topic.The amount of DC fuse first is very big, such as the photovoltaic plant of a 100MW, then needs to be equipped with according to the inverter of 1MW
14 header boxs, every header box wants 16 branch roads, then need 16*2*14*100=44800 roots to insure altogether；Next direct current
The fault rate of fuse is high, and due to the output characteristics of photovoltaic battery panel, whether this or not when protecting to cause DC fuse, is held when not protecting
Easily misoperation.According in the failure that live actual count data, photovoltaic plant occur, wherein the failure ratio related to DC fuse
Example brings sharply increasing for maintenance workload more than 20%.
Utility model content
The purpose of this utility model is to solve background above technology by a kind of collector-shoe gear of cancellation DC fuse
The problem that part is mentioned.
It is that, up to this purpose, the utility model is employed the following technical solutions：
A kind of collector-shoe gear for cancelling DC fuse, the device includes some counnter attack diodes, per two string photovoltaic battery panels
Import and connect afterwards all the way a counnter attack diode, output after the counnter attack diode is parallel with one another.
Especially, the outlet side of the collector-shoe gear for cancelling DC fuse is connected with dc circuit breaker.
Especially, the front end of the collector-shoe gear for cancelling DC fuse is additionally provided with some break-up devices, the disjunction
One end connection photovoltaic battery panel of device, other end connection counnter attack diode.
Especially, the break-up device includes rotary switch, electronic fuse, relay, contactor, shunt release.
The utility model proposes cancellation DC fuse collector-shoe gear in per two string photovoltaic battery panels import go here and there afterwards all the way
One counnter attack diode of connection, output after the counnter attack diode is parallel with one another not only realizes combining functions, and eliminates straight
Stream fuse, in short circuit or the failure such as photovoltaic battery panel is reversed, the electric current for flowing through device or circuit is photovoltaic battery panel short circuit electricity
, there is the anti-phenomenon for filling all the way of multichannel in stream, reliability is high during without as the parallel connection of multichannel photovoltaic panel；Meanwhile, collector-shoe gear front end
Some break-up devices are additionally provided with, reliability is increased；Collector-shoe gear outlet side can remove dc circuit breaker, reduce into
This.
Description of the drawings
Fig. 1 is the collector-shoe gear structure chart of the cancellation DC fuse that the utility model embodiment one is provided；
Fig. 2 is the collector-shoe gear structure chart one of the cancellation DC fuse that the utility model embodiment two is provided；
Fig. 3 is the collector-shoe gear structure chart two of the cancellation DC fuse that the utility model embodiment two is provided；
Fig. 4 is the collector-shoe gear structure chart of the cancellation DC fuse that the utility model embodiment three is provided.
Specific embodiment
For the ease of understanding the utility model, the utility model is more fully retouched below with reference to relevant drawings
State.Preferred embodiment of the present utility model is given in accompanying drawing.But, the utility model can come in many different forms real
It is existing, however it is not limited to embodiment described herein.On the contrary, the purpose for providing these embodiments is made to public affairs of the present utility model
Open the more thorough comprehensive of content understanding.It should be noted that when an element is considered as " connection " another element, it can
To be directly to another element or may be simultaneously present centering elements.Unless otherwise defined, institute used herein
Some technologies and scientific terminology are identical with the implication that those skilled in the art of the present utility model are generally understood that is belonged to.Herein
In term used in the description of the present utility model be intended merely to describe specific embodiment purpose, it is not intended that in
Limit the utility model.Term as used herein " and/or " include one or more related Listed Items arbitrary and
All of combination.
Embodiment one
Cancelling the collector-shoe gear of DC fuse in the present embodiment includes some counnter attack diodes, converges per two string photovoltaic battery panels
Enter and connect afterwards all the way a counnter attack diode, outlet side dc circuit breaker is accessed after the counnter attack diode is parallel with one another.
As shown in figure 1, the collector-shoe gear structure chart of the cancellation DC fuse that Fig. 1 is the utility model embodiment one to be provided, D1-Dn in figure
For counnter attack diode, PV1+, PV2+ ... PV2n+, PV- are photovoltaic battery panel.The remittance of the cancellation DC fuse that the present embodiment is proposed
Stream device not only realizes combining functions, and in the failure such as short circuit or cell panel be reversed, flows through the electric current of device or circuit
For cell panel short circuit current, there is multichannel during without as the parallel connection of multichannel photovoltaic panel and instead fill phenomenon all the way, and then cause device wire
Stream is passed by so as to DC fuse, therefore the collector-shoe gear for cancelling DC fuse that the present embodiment is proposed must be added not only to eliminate directly
Stream fuse, reduces cost, and reliability is high.
Embodiment two
Cancelling the collector-shoe gear of DC fuse in the present embodiment includes some counnter attack diodes, converges per two string photovoltaic battery panels
Enter and connect afterwards all the way a counnter attack diode, outlet side dc circuit breaker is accessed after the counnter attack diode is parallel with one another.
In order to increase system reliability, break-up device, the break-up device is added to include rotation in collector-shoe gear front end in the present embodiment
Switch, electronic fuse or other active disjunction devices, the active disjunction device include but is not limited to relay, contactor,
Shunt release.Fig. 2 is the structure chart of collector-shoe gear when break-up device selects rotary switch, and Fig. 3 selects electronics for break-up device
The structure chart of fuse constantly collector-shoe gear, D1-Dn is counnter attack diode in figure, and PV1+, PV2+ ... PV2n+, PV- are photovoltaic electric
Pond plate.
Embodiment three
Cancelling the collector-shoe gear of DC fuse in the present embodiment includes some counnter attack diodes, converges per two string photovoltaic battery panels
Enter and connect afterwards all the way a counnter attack diode, output after the counnter attack diode is parallel with one another.In order to increase system reliability
Property, in the present embodiment collector-shoe gear front end add break-up device, the break-up device include rotary switch, electronic fuse or
Other active disjunction devices, the active disjunction device includes but is not limited to relay, contactor, shunt release.
For collector-shoe gear outlet side dc circuit breaker, its capacity is phase with the dc circuit breaker capacity in DC power distribution cabinet
With, play a part of redundancy, it is impossible to play multi-stage protection function, photovoltaic system fault rate, therefore this enforcement are increased on the contrary
The dc circuit breaker of the outlet side connection of collector-shoe gear is eliminated in example, it is safeguarded with defencive function by inverter side DC distribution
Cabinet realizes that reduce cost, as shown in figure 4, D1-Dn is counnter attack diode in figure, PV1+, PV2+ ... PV2n+, PV- are photovoltaic
Cell panel.
Import per two string photovoltaic battery panels in the technical solution of the utility model and connect afterwards all the way a counnter attack diode, institute
The rear output parallel with one another of counnter attack diode is stated, combining functions are not only realized, and eliminates DC fuse, in short circuit or photovoltaic
During the failure such as cell panel is reversed, the electric current for flowing through device or circuit is photovoltaic battery panel short circuit current, without as multichannel photovoltaic
There is multichannel anti-filling phenomenon all the way when plate is in parallel, reliability is high；Meanwhile, collector-shoe gear front end is additionally provided with some disjunction dresses
Put, increased reliability；Collector-shoe gear outlet side can remove dc circuit breaker, reduce cost.
Note, above are only preferred embodiment of the present utility model and institute's application technology principle.Those skilled in the art's meeting
Understand, the utility model is not limited to specific embodiment described here, can carry out for a person skilled in the art various bright
Aobvious change, readjust and substitute without departing from protection domain of the present utility model.Therefore, although by above example
The utility model is described in further detail, but the utility model is not limited only to above example, without departing from
In the case that the utility model is conceived, more other Equivalent embodiments can also be included, and scope of the present utility model is by appended
Right determine.
Claims (4)
1. a kind of collector-shoe gear for cancelling DC fuse, it is characterised in that including some counnter attack diodes, per two string photovoltaic cells
Plate is imported and connect afterwards all the way a counnter attack diode, output after the counnter attack diode is parallel with one another.
2. it is according to claim 1 cancel DC fuse collector-shoe gear, it is characterised in that the outlet side of the collector-shoe gear
It is connected with dc circuit breaker.
3. according to any one of claim 1 or 2 cancellation DC fuse collector-shoe gear, it is characterised in that the cancellation
The front end of the collector-shoe gear of DC fuse is additionally provided with some break-up devices, one end connection photovoltaic cell of the break-up device
Plate, other end connection counnter attack diode.
4. it is according to claim 3 cancel DC fuse collector-shoe gear, it is characterised in that the break-up device include rotation
Turn on pass, electronic fuse, relay, contactor, shunt release.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621034664.0U CN206117592U (en) | 2016-08-31 | 2016-08-31 | Manifold device of cancellation direct current fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621034664.0U CN206117592U (en) | 2016-08-31 | 2016-08-31 | Manifold device of cancellation direct current fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206117592U true CN206117592U (en) | 2017-04-19 |
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ID=58518687
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621034664.0U Active CN206117592U (en) | 2016-08-31 | 2016-08-31 | Manifold device of cancellation direct current fuse |
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| CN (1) | CN206117592U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110729714A (en) * | 2019-10-30 | 2020-01-24 | 上能电气股份有限公司 | Photovoltaic power generation system input reverse connection protection circuit |
| CN111342495A (en) * | 2020-04-08 | 2020-06-26 | 阳光电源股份有限公司 | Renewable energy source-energy storage hybrid power generation system |
| CN113725847A (en) * | 2021-02-20 | 2021-11-30 | 华为数字能源技术有限公司 | Photovoltaic system, direct current combiner box and fault isolation method |
| WO2022141526A1 (en) * | 2020-12-31 | 2022-07-07 | 华为数字能源技术有限公司 | Photovoltaic power generation system, photovoltaic inverter and direct-current combiner box |
-
2016
- 2016-08-31 CN CN201621034664.0U patent/CN206117592U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110729714A (en) * | 2019-10-30 | 2020-01-24 | 上能电气股份有限公司 | Photovoltaic power generation system input reverse connection protection circuit |
| CN110729714B (en) * | 2019-10-30 | 2023-07-14 | 上能电气股份有限公司 | Input reverse connection protection circuit of photovoltaic power generation system |
| CN111342495A (en) * | 2020-04-08 | 2020-06-26 | 阳光电源股份有限公司 | Renewable energy source-energy storage hybrid power generation system |
| CN111342495B (en) * | 2020-04-08 | 2022-04-08 | 阳光电源股份有限公司 | Renewable energy source-energy storage hybrid power generation system |
| WO2022141526A1 (en) * | 2020-12-31 | 2022-07-07 | 华为数字能源技术有限公司 | Photovoltaic power generation system, photovoltaic inverter and direct-current combiner box |
| CN113725847A (en) * | 2021-02-20 | 2021-11-30 | 华为数字能源技术有限公司 | Photovoltaic system, direct current combiner box and fault isolation method |
| WO2022174402A1 (en) * | 2021-02-20 | 2022-08-25 | 华为数字能源技术有限公司 | Photovoltaic system, direct-current combiner box and fault isolation method |
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