CN203942491U - A kind of photovoltaic array conflux box - Google Patents
A kind of photovoltaic array conflux box Download PDFInfo
- Publication number
- CN203942491U CN203942491U CN201420329279.3U CN201420329279U CN203942491U CN 203942491 U CN203942491 U CN 203942491U CN 201420329279 U CN201420329279 U CN 201420329279U CN 203942491 U CN203942491 U CN 203942491U
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- anodal
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- 230000001413 cellular effect Effects 0.000 claims abstract description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 230000006378 damage Effects 0.000 abstract description 2
- 238000005070 sampling Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Photovoltaic Devices (AREA)
Abstract
A photovoltaic array conflux box, comprises the circuit link block in casing and casing, the negative pole input common port that described circuit link block comprises one group of anodal input common port and answers in contrast; Electrode input end comprises that at least one road electric current is anodal, and negative input at least comprises a road and anodal corresponding negative pole; The anodal input in each road or negative pole input are connected to common port by a fuse; Positive pole or negative pole common port are connected to a two-way contactor KM end of incoming cables through a cover cellular type Hall current sensor respectively; Contactor outlet termination circuit breaker Q F; Positive and negative polarities common port is connected respectively to the both positive and negative polarity input of lightning protection device; The outlet of circuit breaker Q F both positive and negative polarity accesses voltage transformer with parallel way.The utility model adopts fuse to protect in support, and lightning protection device can be eliminated the destruction of thunder and lightning high pressure to photovoltaic array, header box internal components.
Description
Technical field
The utility model belongs to photovoltaic application technical field, is specifically related to the collector-shoe gear for being connected between photovoltaic array or various DC power supply and inverter.
Background technology
For reducing the line between photovoltaic array or other DC power supply and inverter, after conventionally photovoltaic group string or DC power supply being confluxed, access again inverter, both strengthened the stability of a system, also facilitate on-site maintenance.Current common header box is divided into band detecting unit and is not with two kinds of detecting units.The header box with detecting unit does not contain a simple electric energy meter conventionally, there is no communication interface, there is no control circuit yet, is unfavorable for the overall monitor of photovoltaic plant.The common control core of header box with detecting unit is fairly simple, and only each branch current is sampled, and upload by communication interface, function singleness, communication efficiency is lower and antijamming capability is lower.Along with the development of embedded technology, simple controller has not met the reliable and stable requirement of photovoltaic supervisory control system.
Summary of the invention
The utility model, for the deficiencies in the prior art, provides a kind of and has certain antijamming capability, lightning protection capability and support the photovoltaic array conflux box that remote on/off is controlled.
Realize above-mentioned purpose, the utility model adopts following technical scheme:
A photovoltaic array conflux box, comprises the circuit link block in casing and casing, it is characterized in that:
The negative pole input common port that described circuit link block comprises one group of anodal input common port and answers in contrast;
Electrode input end comprises that at least one road electric current is anodal, and negative input at least comprises a road and anodal corresponding negative pole;
The anodal input in each road or negative pole input are connected to common port by a fuse;
Positive pole or negative pole common port are connected to a two-way contactor KM end of incoming cables through a cover cellular type Hall current sensor respectively;
Contactor outlet termination circuit breaker Q F;
Positive and negative polarities common port is connected respectively to the both positive and negative polarity input of lightning protection device; The outlet of circuit breaker Q F both positive and negative polarity accesses voltage transformer with parallel way.
The utility model is preferred following technical scheme further:
Every group of photovoltaic array both positive and negative polarity enters header box housing by the waterproof wiring hole on header box base plate, and each road negative or positive electrode is connected on DC bus inlet wire common port copper busbar by fuse respectively;
DC bus after confluxing passes through contactor KM, circuit breaker Q F, DC bus outlet terminal, then exports by header box base plate waterproof wiring hole.
Contactor control loop, Hall-type current transformer, voltage transformer, temperature sensor be access control unit respectively, and control unit is existing general controls unit.
By such scheme, fuse is protected in support, can under control unit failure conditions, carry out overcurrent protection.Lightning protection device can be eliminated the destruction of thunder and lightning high pressure to photovoltaic array, header box internal components.Current transformer is passed to control unit by current signal; Voltage transformer is passed to control unit by voltage signal; Temperature sensor is passed to control unit by temperature signal; Control unit scanning relay status, obtains header box operating state.So, header box can provide the comparatively comprehensively monitoring information such as voltage, electric current, temperature, operating state, energy output.
Further, adopt Hall-type active electric current instrument transformer, can significantly improve sampling precision, and well completely cut off primary circuit and secondary circuit, improve sampling reliability.
Further, the utility model support access photovoltaic supervisory control system, realizes real time data monitoring and remote operation contactor, and header box is cut-off to control.
The utlity model has following useful technique effect:
Accompanying drawing explanation
For the utility model is more easily clearly understood, below in conjunction with specific embodiments and accompanying drawing, be further described:
Fig. 1 is a kind of schematic diagram of photovoltaic array conflux box;
Fig. 2 is a kind of structure and winding diagram of photovoltaic array conflux box.
Reference numeral in figure is: 1-header box connection side base plate; 2-fuse; 3-485 binding posts; 4-fixed terminal; 5-DC bus outlet terminal; 6-DC bus inlet wire common port copper busbar; 7-common ground end; 8-voltage transformer; 9-Hall-type direct current instrument transformer; 10-D.C. contactor; 11-temperature sensor; 12-existing general controls unit; 13-positive electrode bus current transformer sampled signal binding post; 14-voltage sampling signal binding post; 15-current transformer power supply terminal; 16-contactor control loop binding post; 17-negative pole busbar current transformer sampled signal binding post; 18-lightning protection device; 19-circuit breaker; 20-waterproof wiring hole; 21-DC bus; 22-common ground line; 23-485 plate upper connecting terminals; 24-header box; 25-temperature signal sampling terminal; 26-power supply terminal.
Embodiment
See the schematic diagram of a kind of photovoltaic array conflux box of Fig. 1, a kind of Intelligent photovoltaic array header box, comprises the circuit link block in casing and casing, the negative pole input common port that described circuit link block comprises one group of anodal input common port and answers in contrast; Electrode input end comprises that at least one road electric current is anodal, and negative input at least comprises a road and anodal corresponding negative pole; The anodal input in each road or negative pole input are connected to common port by a fuse 2; Positive pole or negative pole common port are connected to two-way contactor 10 ends of incoming cables through a cover cellular type Hall current sensor 9 respectively; Contactor 10 control loop access control unit; Contactor 10 outlet termination circuit breakers 19; Positive and negative polarities common port is connected respectively to the both positive and negative polarity input of lightning protection device 18; Circuit breaker 19 both positive and negative polarity outlets are with parallel way access voltage transformer 8; Hall-type current transformer and voltage transformer secondary be access control unit respectively; Temperature sensor is equipped with in casing side, transducer secondary access control unit.
The multichannel positive pole of photovoltaic array is connected to anodal common port by fuse 2, and corresponding negative pole is connected to negative pole common port, realizes the output of confluxing of photovoltaic combiner box.Lightning protection device 18 is parallel on positive and negative polarities, prevents lightning impulse equipment.Anodal, negative pole bus rod passes through contactor 10 and the rear output of circuit breaker 19.Temperature sensor 11, Hall-type current transformer 9, voltage transformer 8 are connected to general controls unit 12, realize the real-time monitoring of temperature, electric current, voltage.Contactor 10 secondary circuits are connected to control unit 12, realize remote control.
See that Fig. 2 is structure and the winding diagram of photovoltaic array conflux box.Every group of photovoltaic array both positive and negative polarity enters header box housing 24 by the waterproof wiring hole 20 on header box base plate 1, and each road is connected on DC bus inlet wire common port copper busbar 6 by fuse 2 respectively.DC bus after confluxing passes through contactor 10, circuit breaker 19, DC bus outlet terminal 5, then by 20 outputs of header box base plate waterproof wiring hole.
The control unit wiring of described header box comprises: 485 plate upper connecting terminals 23 are connected to 485 binding posts 3 again by 20 outputs of waterproof wiring hole, realize.Current transformer power supply terminal 15 is connected to two Hall-type direct current instrument transformers 9, and it is powered.The sampled signal line of Hall-type direct current instrument transformer 9 is connected to busbar current transformer sampled signal binding post 13 and 17.Voltage transformer 8 primary sides are connected to DC bus 21, and secondary side is connected to voltage sampling signal binding post 14.Temperature sensor 11 is connected to sampling terminal 25.
Lightning protection device 18 is connected respectively to both positive and negative polarity DC bus 21 and PE common ground terminal 7.
Power supply terminal 26 is connected to the front both positive and negative polarity DC bus 21 of contactor.
The embodiment more than providing is in order to illustrate the utility model and its practical application, not the utility model is done to any pro forma restriction, any one professional and technical personnel, within not departing from the scope of technical solution of the present invention, does certain modification and changes as the equivalent embodiment that is considered as equivalent variations according to above technology and method.
Claims (2)
1. a photovoltaic array conflux box, comprises the circuit link block in casing and casing, it is characterized in that:
The negative pole input common port that described circuit link block comprises one group of anodal input common port and answers in contrast;
Electrode input end comprises that at least one road electric current is anodal, and negative input at least comprises a road and anodal corresponding negative pole;
The anodal input in each road or negative pole input are connected to common port by a fuse;
Positive pole or negative pole common port are connected to a two-way contactor KM end of incoming cables through a cover cellular type Hall current sensor respectively;
Contactor outlet termination circuit breaker Q F;
Positive and negative polarities common port is connected respectively to the both positive and negative polarity input of lightning protection device; The outlet of circuit breaker Q F both positive and negative polarity accesses voltage transformer with parallel way.
2. photovoltaic array conflux box according to claim 1, is characterized in that:
Every group of photovoltaic array both positive and negative polarity enters header box housing by the waterproof wiring hole on header box base plate, and each road negative or positive electrode is connected on DC bus inlet wire common port copper busbar by fuse respectively;
DC bus after confluxing passes through contactor KM, circuit breaker Q F, DC bus outlet terminal, then exports by header box base plate waterproof wiring hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420329279.3U CN203942491U (en) | 2014-06-19 | 2014-06-19 | A kind of photovoltaic array conflux box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420329279.3U CN203942491U (en) | 2014-06-19 | 2014-06-19 | A kind of photovoltaic array conflux box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203942491U true CN203942491U (en) | 2014-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420329279.3U Expired - Lifetime CN203942491U (en) | 2014-06-19 | 2014-06-19 | A kind of photovoltaic array conflux box |
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| CN (1) | CN203942491U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108964604A (en) * | 2018-07-27 | 2018-12-07 | 易事特新能源合肥有限公司 | A kind of photovoltaic array intelligent DC header box |
| CN113162544A (en) * | 2021-04-29 | 2021-07-23 | 中顺元通新能源集团有限公司 | Photovoltaic power generation uses switch board |
-
2014
- 2014-06-19 CN CN201420329279.3U patent/CN203942491U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108964604A (en) * | 2018-07-27 | 2018-12-07 | 易事特新能源合肥有限公司 | A kind of photovoltaic array intelligent DC header box |
| CN113162544A (en) * | 2021-04-29 | 2021-07-23 | 中顺元通新能源集团有限公司 | Photovoltaic power generation uses switch board |
| CN113162544B (en) * | 2021-04-29 | 2022-11-15 | 中顺元通新能源集团有限公司 | Photovoltaic power generation uses switch board |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | "change of name, title or address" | ||
| CP03 | "change of name, title or address" |
Address after: 101303 2nd floor, building 307, Guodian New Energy Institute, 9 Yingcai North 2nd Street, future science and Technology City, Changping District, Beijing Patentee after: Guoneng xinkong Internet Technology Co.,Ltd. Address before: Building 1, yard 16, West Fourth Ring Middle Road, Haidian District, Beijing 100039 Patentee before: BEIJING HUADIAN TIANREN ELECTRIC POWER CONTROL TECHNOLOGY Co.,Ltd. |