CN204031071U - A kind of GFDI ground fault detection circuit of solar battery group - Google Patents
A kind of GFDI ground fault detection circuit of solar battery group Download PDFInfo
- Publication number
- CN204031071U CN204031071U CN201420501843.5U CN201420501843U CN204031071U CN 204031071 U CN204031071 U CN 204031071U CN 201420501843 U CN201420501843 U CN 201420501843U CN 204031071 U CN204031071 U CN 204031071U
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- solar battery
- battery group
- fault detection
- ground fault
- current sensor
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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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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Emergency Protection Circuit Devices (AREA)
- Protection Of Static Devices (AREA)
Abstract
The utility model relates to a kind of observation circuit, specifically discloses a kind of GFDI ground fault detection circuit of solar battery group, comprises solar battery group, Hall current sensor and fuse; Described solar battery group is provided with multichannel, a Hall current sensor that each solar battery group is connected; Described fuse connects with Hall current sensor, and solar battery group connected together, and receives casing greatly after gathering by connecting D.C. contactor.The utility model relates to the GFDI ground fault detection of solar battery group, is mainly used in the photovoltaic DC-to-AC converter with two-way or multichannel MPPT, to hull cell ground fault detection; Solar battery group is summarised in together, casing the earth is received by D.C. contactor, reduce the PID effect of solar panel, each road solar battery group uses the leakage current of high-precision hall current sensor sampling to casing, be set to multichannel MPPT ground fault detection, there is provided low cost low monitoring scheme, monitoring is convenient, and cost is low.
Description
Technical field
The utility model relates to a kind of observation circuit, specifically a kind of GFDI ground fault detection circuit of solar battery group.
Background technology
At present, during the application of photovoltaic DC-to-AC converter scene, the negative or positive of battery pack needs to connect the earth, if during multichannel MPPT, and needs to connect the earth simultaneously, and monitoring grounding fault respectively, cumbersome, not easily monitor, and monitoring cost is higher, causes the wasting of resources.
Utility model content
The purpose of this utility model is the GFDI ground fault detection circuit providing a kind of solar battery group for multichannel MPPT photovoltaic DC-to-AC converter.
For achieving the above object, the utility model provides following technical scheme:
A GFDI ground fault detection circuit for solar battery group, comprises solar battery group, Hall current sensor and fuse; Described solar battery group is provided with multichannel, a Hall current sensor that each solar battery group is connected; Described fuse connects with Hall current sensor, and solar battery group connected together, and receives casing greatly after gathering by connecting D.C. contactor.
As further program of the utility model: described solar battery group is provided with multichannel, arrange multichannel insurance, casing the earth received by the D.C. contactor being 1000VDC by a high pressure again after each road solar battery group gathers.
As further program of the utility model: each road solar battery group is linked together by fuse.
As further program of the utility model: described Hall current sensor is high-precision sensor, each road solar battery group of sampling respectively is to the leakage current of casing.
Compared with prior art, the beneficial effects of the utility model are: the GFDI ground fault detection that the present invention relates to solar battery group, is mainly used in the photovoltaic DC-to-AC converter with two-way or multichannel MPPT, to hull cell ground fault detection; Solar battery group is summarised in together, casing the earth is received by D.C. contactor, reduce the PID effect of solar panel, each road solar battery group uses the leakage current of high-precision hall current sensor sampling to casing, be set to multichannel MPPT ground fault detection, there is provided low cost low monitoring scheme, monitoring is convenient, and cost is low.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: 1-solar battery group, 2-Hall current sensor, 3-fuse, 4-D.C. contactor.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of GFDI ground fault detection circuit of solar battery group, comprises solar battery group 1, Hall current sensor 2 and fuse 3; Described solar battery group 1 is provided with multichannel, a high-precision hall current sensor 2 that each solar battery group 1 is connected, and the leakage current of each road solar battery group 1 pair of casing of sampling respectively arranges multichannel insurance; Described fuse 3 is connected with Hall current sensor 2, and each road solar battery group 1 is linked together by fuse 3, and casing the earth received by the D.C. contactor 4 being 1000VDC by connection high pressure after gathering.This practicality is mainly used in the photovoltaic DC-to-AC converter with two-way or multichannel MPPT, is set to multichannel MPPT ground fault detection, to hull cell ground fault detection; Reduce the PID effect of solar panel, provide low cost low monitoring scheme, monitoring is convenient, and cost is low.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technical scheme in each embodiment also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.
Claims (3)
1. a GFDI ground fault detection circuit for solar battery group, comprises solar battery group (1), Hall current sensor (2) and fuse (3); It is characterized in that, described solar battery group (1) is provided with multichannel, the upper series connection Hall current sensor (2) of each solar battery group (1); Described fuse (3) is connected with Hall current sensor (2), and solar battery group (1) is connected together, and receives casing the earth after gathering by connecting D.C. contactor (4).
2. the GFDI ground fault detection circuit of solar battery group according to claim 1, is characterized in that, casing the earth received by the D.C. contactor (4) that Suo Ge road solar battery group (1) is 1000VDC by a high pressure again after gathering.
3. the GFDI ground fault detection circuit of solar battery group according to claim 1, is characterized in that, each road solar battery group (1) is linked together by fuse (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420501843.5U CN204031071U (en) | 2014-09-02 | 2014-09-02 | A kind of GFDI ground fault detection circuit of solar battery group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420501843.5U CN204031071U (en) | 2014-09-02 | 2014-09-02 | A kind of GFDI ground fault detection circuit of solar battery group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204031071U true CN204031071U (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420501843.5U Active CN204031071U (en) | 2014-09-02 | 2014-09-02 | A kind of GFDI ground fault detection circuit of solar battery group |
Country Status (1)
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| CN (1) | CN204031071U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108206670A (en) * | 2016-12-19 | 2018-06-26 | 丰郅(上海)新能源科技有限公司 | For detecting the monitoring system and monitoring method of photovoltaic battery pack string state of insulation |
| CN115575852A (en) * | 2022-10-11 | 2023-01-06 | 华为数字能源技术有限公司 | Shell grounding detection method and inverter |
-
2014
- 2014-09-02 CN CN201420501843.5U patent/CN204031071U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108206670A (en) * | 2016-12-19 | 2018-06-26 | 丰郅(上海)新能源科技有限公司 | For detecting the monitoring system and monitoring method of photovoltaic battery pack string state of insulation |
| CN108206670B (en) * | 2016-12-19 | 2021-05-07 | 丰郅(上海)新能源科技有限公司 | Monitoring system and monitoring method for detecting insulation state of photovoltaic battery pack string |
| CN115575852A (en) * | 2022-10-11 | 2023-01-06 | 华为数字能源技术有限公司 | Shell grounding detection method and inverter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200525 Address after: Shenzhen Nanshan District City, Guangdong province 518000 Pine Industrial Park outside the small Thai Bai Lu Bai mang mulberry Patentee after: MOSO POWER SUPPLY TECHNOLOGY Co.,Ltd. Address before: 518126 Guangdong province Shenzhen city Baoan District street Xixiang city road route Shu Mian's youth entrepreneurship Park B building first floor Patentee before: SHENZHEN MOSO ELECTRIC Co.,Ltd. |