CN204794899U - Failure detector circuit of integrated unit of solar PV modules - Google Patents
Failure detector circuit of integrated unit of solar PV modules Download PDFInfo
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- CN204794899U CN204794899U CN201520383003.8U CN201520383003U CN204794899U CN 204794899 U CN204794899 U CN 204794899U CN 201520383003 U CN201520383003 U CN 201520383003U CN 204794899 U CN204794899 U CN 204794899U
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- photovoltaic module
- relay normally
- current sensor
- integrated unit
- photovoltaic
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The utility model discloses a failure detector circuit of integrated unit of solar PV modules, including 6 photovoltaic module, 3 individual current sensor, 3 individual relay normally closed contact, 3 individual normally open contact, integrated unit positive terminal and integrated unit negative pole end, it is first, two photovoltaic module and third, four photovoltaic module establish ties earlier and afterwards connect in parallel, the 5th, six photovoltaic module and first-four photovoltaic module then go on like shown being connected of figure through the normally open contact of 3 relays and the normally closed contact of 3 relays respectively, be equipped with a current sensor between first relay normally closed contact and integrated unit positive terminal, be equipped with the 2nd current sensor between a photovoltaic module and the 3rd photovoltaic module, the 6th photovoltaic module's anodal zonulae occludens has the 3rd current sensor, through detecting a relatively current sensor, the position of fault localization emergence is come to the 2nd current sensor and the 3rd current sensor's current value and change photovoltaic array structure.
Description
Technical field
This patent relates to a kind of failure detector circuit of solar photovoltaic assembly integrated unit.
Background technology
At the solar photovoltaic assembly integrated unit that patent name is a kind of primary topology, the patent No.: ZL2013208161.6 and patent name: with a kind of solar photovoltaic generation system of primary topology, the patent No.: the photovoltaic array describing a kind of primary topology in ZL2012083625.1 respectively.Be applied to the photovoltaic array failure detector circuit that conventional topology structure is fixing, in the face of the series parallel structure of existing above-mentioned variable light photovoltaic array, fast detecting can not go out its abort situation, therefore fault detect can not be carried out to it.
Summary of the invention
The purpose of this utility model is to provide a kind of failure detector circuit of solar photovoltaic assembly integrated unit, can detect and diagnose sunny energy photovoltaic array to produce location of fault.
To achieve these goals, the utility model is achieved through the following technical solutions:
A failure detector circuit for solar photovoltaic assembly integrated unit, comprises 6 photovoltaic modulies, 3 current sensors, 3 relay normally-closed contacts, 3 relay normally open contacts, integrated unit positive terminal and integrated unit negative pole end,
First photovoltaic module is connected with the second photovoltaic module, 3rd photovoltaic module is connected with the 4th photovoltaic module, then the positive pole of the first photovoltaic module is connected with the positive pole of the 3rd photovoltaic module, the second current sensor is connected with between first photovoltaic module and the 3rd photovoltaic module, the negative pole of the second photovoltaic module is connected with the negative pole of the 4th photovoltaic module
First photovoltaic module and the 3rd photovoltaic module positive pole are connected to integrated unit positive terminal by the first relay normally-closed contact, are connected with the first current sensor between the first relay normally-closed contact and integrated unit positive terminal;
3rd photovoltaic module positive pole is connected to again the negative pole of the 6th photovoltaic module by the first relay normally open contact;
The negative pole of the 6th photovoltaic module connects the negative pole of the 5th photovoltaic module by the 3rd relay normally open contact;
The positive pole of the 6th photovoltaic module is connected to integrated unit positive terminal by the second relay normally open contact;
The positive pole compact siro spinning technology of described 6th photovoltaic module has the 3rd current sensor;
Second photovoltaic module negative pole is connected to the negative pole end of integrated unit;
Second photovoltaic module negative pole is also connected to the negative pole of the 6th photovoltaic module by the second relay normally-closed contact.
In the utility model, as further illustrating, first photovoltaic module, the second photovoltaic module, the 3rd photovoltaic module, the 4th photovoltaic module, the 5th photovoltaic module and the 6th photovoltaic module are made up of single photovoltaic module respectively, or the component string be in series by multiple photovoltaic modulies that quantity is identical is formed.
In the utility model, as further illustrating, 3 described relay normally-closed contacts can replace with 3 relay normally open contacts, and 3 relay normally open contacts also can replace with 3 relay normally-closed contacts simultaneously.Adopting this mode, compared with prior art, by relay normally-closed contact and normally opened contact being replaced flexibly, making the utility model have the advantage of flexible mobility.
The beneficial effects of the utility model:
The utility model structure is simple, it is ingenious to design, and has great promotional value in this area.
Accompanying drawing explanation
Fig. 1 is anatomical connectivity schematic diagram of the present utility model;
Accompanying drawing 2 is the failure detector circuit schematic diagram of solar photovoltaic generation system;
Annex marks:
First photovoltaic module 1, second photovoltaic module the 2, three photovoltaic module the 3, four photovoltaic module the 4, five photovoltaic module the 5, six photovoltaic module 6,
First current sensor 7, second current sensor the 8, three current sensor 9,
First relay normally-closed contact 10, second relay normally-closed contact the 11, three relay normally-closed contact 12,
First relay normally open contact 13, second relay normally open contact the 14, three relay normally open contact 15,
Integrated unit positive terminal 16, integrated unit negative pole end 17;
Inverter 18.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but execution mode of the present utility model is not limited to the scope that embodiment represents.
Embodiment 1:
As shown in Figure 1, a kind of failure detector circuit of solar photovoltaic assembly integrated unit, it comprises 6 photovoltaic modulies, 3 current sensors, 3 relay normally-closed contacts, 3 relay normally open contacts, integrated unit positive terminal 16 and integrated unit negative pole end 17,
First photovoltaic module 1 is connected with the second photovoltaic module 2,3rd photovoltaic module 3 is connected with the 4th photovoltaic module 4, then the positive pole of the first photovoltaic module 1 is connected with the positive pole of the 3rd photovoltaic module 3, the second current sensor 8 is connected with between first photovoltaic module 1 and the 3rd photovoltaic module 3, the negative pole of the second photovoltaic module 2 is connected with the negative pole of the 4th photovoltaic module 4
First photovoltaic module 1 and the 3rd photovoltaic module 3 positive pole are connected between integrated unit positive terminal 16, first relay normally-closed contact 10 and integrated unit positive terminal 16 by the first relay normally-closed contact 10 and are connected with the first current sensor 7;
3rd photovoltaic module 3 positive pole is connected to again the negative pole of the 6th photovoltaic module 6 by the first relay normally open contact 13;
The negative pole of the 6th photovoltaic module 6 connects the negative pole of the 5th photovoltaic module 5 by the 3rd relay normally open contact 15;
The positive pole of the 6th photovoltaic module 6 is connected to integrated unit positive terminal 16 by the second relay normally open contact 14;
The positive pole compact siro spinning technology of described 6th photovoltaic module 6 has the 3rd current sensor 9;
The negative pole of the second photovoltaic module 2 is connected to the negative pole end 17 of integrated unit;
The negative pole of the second photovoltaic module 2 is also connected to the negative pole of the 6th photovoltaic module 6 by the second relay normally-closed contact 11.
The solar photovoltaic assembly integrated unit of primary topology has two kinds of operating states:
The first is that the first relay normally-closed contact 10, second relay normally-closed contact 11 and the 3rd relay normally-closed contact 12 are in closure state, and the first relay normally open contact 13, second relay normally open contact 14 and the 3rd relay normally open contact 15 are in off-state simultaneously;
The second is that the first relay normally-closed contact 10, second relay normally-closed contact 11 and the 3rd relay normally-closed contact 12 are in off-state, and the first relay normally open contact 13, second relay normally open contact and the 3rd relay normally open contact 15 are in closure state simultaneously.
Operation principle of the present utility model is as follows:
For the angle of inclination of varying environment temperature, sunlight irradiation degree and photovoltaic module, current value when normally working under measuring photovoltaic module two kinds of operating states respectively, draft concrete scope according to following method:
As shown in Figure 2 integrated unit positive terminal 16 is connected by inverter 18 with integrated unit negative pole end 17, because the power generation performance of photovoltaic module in integrated unit under unified installation environment and parameter are close, assembly can be considered as equivalent unit.Be defined as follows at this: U
andfor the grid-connected magnitude of voltage of inverter 18; U
lowfor the minimum input voltage that inverter 18 requires; U
highfor the maximum input voltage that inverter 18 requires; I
ofor the total current after grid-connected; U
1for the magnitude of voltage of photovoltaic module single under the first operating state; I
1for U under the first operating state
1corresponding current value; I
17for the current value of the first current sensor 7 under the first operating state; I
18for the current value of the second current sensor 8 under the first operating state; I
19for the current value of the 3rd current sensor 9 under the first operating state; I
1low is the minimum current value that under the first operating state, single photovoltaic module ensures normal job requirement; U
2for the magnitude of voltage of photovoltaic module single under the second operating state; I
2for U under the second operating state
2corresponding current value; I
27for the current value of the first current sensor 7 under the second operating state; I
28for the current value of the second current sensor 8 under the second operating state; I
29for the current value of the 3rd current sensor 9 under the second operating state; I
2 is lowfor photovoltaic module single under the second operating state ensures the minimum current value of normal job requirement.
Based on this, we can draw basic relational expression:
U
low≤ U
and≤ U
high;
Non-failure conditions for the first operating state:
U
and=2U
1; U
low≤ 2U
1≤ U
high;
I
o=I
17=3I
18=3I
19=3I
1; I
1>=I
1 is low
Non-failure conditions for the second operating state:
U
and=3U
2; U
low≤ 3U
2≤ U
high;
I
o=I
27=2I
28=2I
29=2I
2; I
1>=I
1 is low
The present invention after repeatedly deriving and actual test proves, the computational methods of concrete scope given herein: photovoltaic module under the first operating state, inverter 18 place magnitude of voltage U
andfor the magnitude of voltage U of single photovoltaic module
12 times, the total current I after grid-connected
o=3I
1, to meet normal operation, then U
low≤ 2U
1≤ U
high, so current value range is now U
1corresponding current value range; Photovoltaic module under the second operating state, inverter 18 place magnitude of voltage U
andfor the magnitude of voltage U of single photovoltaic module
12 times, the total current I after grid-connected
o=2I
2, to meet normal operation, then U
low≤ 3U
2≤ U
high, so current value range is now U
2corresponding current value range.
Current value range when photovoltaic module normally works first is measured for different environmental conditions before installing, and the present invention directly can judge whether break down under two kinds of operating states in a kind of method that this provides verification.As long as break down under namely any one generation of following condition assert the first operating state: the value I of the second current sensor 8
18the minimum current value I of normal job requirement is ensured lower than photovoltaic module single under the first operating state
1 is low; The value I of the 3rd current sensor 9
19the minimum current value I of normal job requirement is ensured lower than photovoltaic module single under the first operating state
1 is low; The value I of the second current sensor 8
18be significantly less than the value I of the first current sensor 7
171/3rd; The value I of the 3rd current sensor 9
19be significantly less than the value I of the first current sensor 7
171/3rd; The value I of the first current sensor 7
17under not reaching the first operating state, single photovoltaic module ensures the minimum current value I of normal job requirement
1 is lowthree times, i.e. 3I
1 is low.
As long as break down under namely any one generation of following condition assert the second operating state: the value I of the second current sensor 8
28the minimum current value I of normal job requirement is ensured lower than photovoltaic module single under the second operating state
2 is low; The value I of the 3rd current sensor 9
29the minimum current value I of normal job requirement is ensured lower than photovoltaic module single under the first operating state
2 is low; The value I of the second current sensor 8
28be significantly less than the value I of the first current sensor 7
271/2nd; The value I of the 3rd current sensor 9
29be significantly less than the value I of the first current sensor 7
271/2nd; The value I of the first current sensor 7
27under not reaching the first operating state, single photovoltaic module ensures the minimum current value I of normal job requirement
2 is lowtwo times, i.e. 2I
2low.
Photovoltaic module breaks down under the first operating state, detect the current value of the second current sensor 8, the 3rd current sensor 9, if the current value approximately equal of the second current sensor 8, the 3rd current sensor 9, then the 3rd photovoltaic module 3, the 4th photovoltaic module 4 branch road break down, if the current value of current value ratio the 3rd current sensor 9 of the second current sensor 8 is little, then the first photovoltaic module 1, second photovoltaic module 2 branch road breaks down, if the current value of current value ratio second current sensor 8 of the 3rd current sensor 9 is little, then the 5th photovoltaic module 5, 6th photovoltaic module 6 branch road breaks down, then by the first relay normally-closed contact 10, second relay normally-closed contact 11 and the 3rd relay normally-closed contact 12 disconnect, first relay normally open contact 13, second relay normally open contact 14 and the 3rd relay normally open contact 15 close, photovoltaic module integrated unit enters the second operating state, compare the current value of the first current sensor 7 and the 3rd current sensor 9 again, if the first current sensor 7 is equal with the current value of the 3rd current sensor 9, then the 5th photovoltaic module 5 branch road breaks down, if the current value of the 3rd current sensor 9 is less than the current value of the first current sensor 7, then the 6th photovoltaic module 6 branch road breaks down.
Photovoltaic module breaks down under the second operating state, compares the current value of the first current sensor 7 and the 3rd current sensor 9, if the first current sensor 7 is equal with the current value of the 3rd current sensor 9, then the 5th photovoltaic module 5 branch road breaks down; If the current value of the 3rd current sensor 9 is less than 1/2 of the current value of the first current sensor 7, then the 6th photovoltaic module 6 branch road breaks down; If the current value of the 3rd current sensor 9 is 1/2 of the current value of the first current sensor 7, then fault occurs in the first photovoltaic module 1, second photovoltaic module 2 branch road or the 3rd photovoltaic module 3, the 4th photovoltaic module 4 branch road.Now the first relay normally-closed contact 10, second relay normally-closed contact 11 and the 3rd relay normally-closed contact 12 are closed, first relay normally open contact 13, second relay normally open contact 14 and the 3rd relay normally open contact 15 disconnect, photovoltaic module integrated unit enters the first operating state, compare the current value of the second current sensor 8 and the 3rd current sensor 9 again, if the second current sensor 8 is equal with the current value of the 3rd current sensor 9, then the 3rd photovoltaic module 3, the 4th photovoltaic module 4 branch road break down; If the current value of current value ratio the 3rd current sensor 9 of the second current sensor 8 is little, then the first photovoltaic module 1, second photovoltaic module 2 branch road breaks down.
Embodiment 2:
As different from Example 1: the component string that multiple photovoltaic modulies that the first photovoltaic module 1, second photovoltaic module 2, the 3rd photovoltaic module 3, the 4th photovoltaic module 4, the 5th photovoltaic module 5 are identical by quantity respectively with the 6th photovoltaic module 6 are in series is formed; 3 described relay normally-closed contacts replace with 3 relay normally open contacts, and 3 relay normally open contacts also replace with 3 relay normally-closed contacts simultaneously.
Last it is noted that obviously, above-described embodiment is only used to the utility model example is clearly described, and not to the restriction implemented.For the those of ordinary skill in described field, can also make other changes in different forms on the basis of the above description, such as the mode etc. of the connection status of regulation and control relay normally-closed contact, relay normally open contact.Here without the need to also cannot to all execution modes with exhaustive.And thus the apparent change of amplifying out or variation be still among protection range of the present utility model.
Claims (3)
1. a failure detector circuit for solar photovoltaic assembly integrated unit, is characterized in that: comprise 6 photovoltaic modulies, 3 current sensors, 3 relay normally-closed contacts, 3 relay normally open contacts, integrated unit positive terminal (16) and integrated unit negative pole end (17)
First photovoltaic module (1) is connected with the second photovoltaic module (2), 3rd photovoltaic module (3) is connected with the 4th photovoltaic module (4), then the positive pole of the first photovoltaic module (1) is connected with the positive pole of the 3rd photovoltaic module (3), the second current sensor (8) is connected with between first photovoltaic module (1) and the 3rd photovoltaic module (3), the negative pole of the second photovoltaic module (2) is connected with the negative pole of the 4th photovoltaic module (4)
First photovoltaic module (1) is connected to integrated unit positive terminal (16) with the 3rd photovoltaic module (3) positive pole by the first relay normally-closed contact (10), is connected with the first current sensor (7) between the first relay normally-closed contact (10) and integrated unit positive terminal (16);
3rd photovoltaic module (3) positive pole is connected to again the negative pole of the 6th photovoltaic module (6) by the first relay normally open contact (13);
The negative pole of the 6th photovoltaic module (6) connects the negative pole of the 5th photovoltaic module (5) by the 3rd relay normally open contact (15);
The positive pole of the 6th photovoltaic module (6) is connected to integrated unit positive terminal (16) by the second relay normally open contact (14);
The positive pole compact siro spinning technology of described 6th photovoltaic module (6) has the 3rd current sensor (9);
Second photovoltaic module (2) negative pole is connected to the negative pole end (17) of integrated unit;
Second photovoltaic module (2) negative pole is also connected to the negative pole of the 6th photovoltaic module (6) by the second relay normally-closed contact (11).
2. the failure detector circuit of solar photovoltaic assembly integrated unit according to claim 1, it is characterized in that, first photovoltaic module (1), the second photovoltaic module (2), the 3rd photovoltaic module (3), the 4th photovoltaic module (4), the 5th photovoltaic module (5) are made up of single photovoltaic module respectively with the 6th photovoltaic module (6), or the component string be in series by multiple photovoltaic modulies that quantity is identical is formed.
3. the failure detector circuit of solar photovoltaic assembly integrated unit according to claim 1, it is characterized in that, 3 described relay normally-closed contacts can replace with 3 relay normally open contacts, and 3 relay normally open contacts also can replace with 3 relay normally-closed contacts simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520383003.8U CN204794899U (en) | 2015-06-05 | 2015-06-05 | Failure detector circuit of integrated unit of solar PV modules |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520383003.8U CN204794899U (en) | 2015-06-05 | 2015-06-05 | Failure detector circuit of integrated unit of solar PV modules |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204794899U true CN204794899U (en) | 2015-11-18 |
Family
ID=54534870
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520383003.8U Expired - Fee Related CN204794899U (en) | 2015-06-05 | 2015-06-05 | Failure detector circuit of integrated unit of solar PV modules |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204794899U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104883127A (en) * | 2015-06-05 | 2015-09-02 | 广西大学 | Solar photovoltaic assembly integration unit fault detection circuit and detection method thereof |
| CN111902725A (en) * | 2018-03-27 | 2020-11-06 | 罗伯特·博世有限公司 | Sensor device for vehicle |
-
2015
- 2015-06-05 CN CN201520383003.8U patent/CN204794899U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104883127A (en) * | 2015-06-05 | 2015-09-02 | 广西大学 | Solar photovoltaic assembly integration unit fault detection circuit and detection method thereof |
| CN104883127B (en) * | 2015-06-05 | 2017-12-19 | 广西大学 | The failure detector circuit of solar photovoltaic assembly integrated unit |
| CN111902725A (en) * | 2018-03-27 | 2020-11-06 | 罗伯特·博世有限公司 | Sensor device for vehicle |
| CN111902725B (en) * | 2018-03-27 | 2023-08-22 | 罗伯特·博世有限公司 | Sensor device for a vehicle |
| US11841379B2 (en) | 2018-03-27 | 2023-12-12 | Robert Bosch Gmbh | Sensor assembly for a vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20160605 |