CN206004300U - Counterflow-preventing current detecting system - Google Patents
Counterflow-preventing current detecting system Download PDFInfo
- Publication number
- CN206004300U CN206004300U CN201621040585.0U CN201621040585U CN206004300U CN 206004300 U CN206004300 U CN 206004300U CN 201621040585 U CN201621040585 U CN 201621040585U CN 206004300 U CN206004300 U CN 206004300U
- Authority
- CN
- China
- Prior art keywords
- counterflow
- load unit
- electrical load
- backflow device
- electrical network
- 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.)
- Active
Links
Classifications
-
- 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
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Abstract
Counterflow-preventing current detecting system, is related to solar energy power generating field.Including air switch, photovoltaic generation unit, use electrical load unit and anti-backflow device, the input connection electrical network of the air switch, output end passes through anti-backflow device and is connected with electrical load unit, is connected on anti-backflow device and between electrical load unit by photovoltaic generation unit.The utility model can be prevented effectively from photovoltaic generation unit adverse current and enter electrical network, produce impact to electrical network, affect the safe operation of electrical network.
Description
Technical field
The utility model is related to solar energy power generating field, specially a kind of counterflow-preventing current detecting system.
Background technology
Photovoltaic generating system does not stop transmission of electricity with electrical load unit in the case of being disabled, often, and always to system
, in this case, easily there is phenomenon of the photovoltaic generating system to grid power transmission, power network fluctuation caused, causes safe thing in power supply
Therefore.
Utility model content
The purpose of this utility model is to provide a kind of counterflow-preventing current detecting system, by the sense of current of detecting system,
To control the break-make between photovoltaic generation unit and electrical network, it is to avoid the back electrical energy of photovoltaic bill unit is to electrical network.
The technical scheme for realizing above-mentioned purpose is：Counterflow-preventing current detecting system, it is characterised in that：Including air switch,
Photovoltaic generation unit, with electrical load unit and anti-backflow device, the input connection electrical network of the air switch, output end pass through
Anti-backflow device be connected with electrical load unit, be connected on anti-backflow device by photovoltaic generation unit and between electrical load unit.
The anti-backflow device includes contactor, current direction detection module and counterflow-preventing current controller, the contact
Device is concatenated with current direction detection module, and the input of contactor is connected with air switch, current direction detection module and electricity consumption
Load unit connects, and the control end of current direction detection module is connected with the input of counterflow-preventing current controller, counterflow-preventing electricity
The output end of stream controller is connected with the control end of A.C. contactor.
When being run well with electrical load unit, current direction detection module exists positive when detecting electrical network normal power supply
Electric current, contactor keep attracting state, and photovoltaic generation unit is incorporated into the power networks with electrical network.
When being disabled with electrical load unit, there is reversely electricity in current direction detection module when detecting electrical network normal power supply
Stream, counterflow-preventing current controller provide power-off signal to contactor, cut off photovoltaic generation unit and are connected with electrical network, make photovoltaic generation
Unit is locally consumed, and is stopped power supply, and does not feed back to electrical network.
The utility model can be prevented effectively from photovoltaic generation unit adverse current and enter electrical network, produce impact to electrical network, affect electrical network
Safe operation.
Description of the drawings
Fig. 1 is fundamental diagram of the present utility model.
Specific embodiment
As shown in figure 1, the utility model includes air switch 1, photovoltaic generation unit 2, uses electrical load unit 3 and counterflow-preventing
Device 4, the input connection electrical network 5 of air switch 1, output end pass through anti-backflow device 4 and are connected with electrical load unit 3, light
Anti-backflow device 4 is connected on and between electrical load unit 3 by volt generator unit 2.
Anti-backflow device 4 includes contactor 6, current direction detection module 7 and counterflow-preventing current controller 8, contactor 6 with
Current direction detection module 7 is concatenated, and the input of contactor 6 is connected with air switch 1, current direction detection module 7 and electricity consumption
Load unit 3 connects, and the control end of current direction detection module 7 is connected with the input of counterflow-preventing current controller 8, counterflow-preventing
The output end of current controller 8 is connected with the control end of A.C. contactor 6.
Claims (2)
1. counterflow-preventing current detecting system, it is characterised in that：Including air switch, photovoltaic generation unit, with electrical load unit and
Anti-backflow device, the air switch input connection electrical network, output end by anti-backflow device with connected with electrical load unit
Connect, anti-backflow device is connected on by photovoltaic generation unit and between electrical load unit.
2. counterflow-preventing current detecting system according to claim 1, it is characterised in that：The anti-backflow device includes contact
Device, current direction detection module and counterflow-preventing current controller, the contactor are concatenated with current direction detection module, contactor
Input be connected with air switch, current direction detection module be connected with electrical load unit, current direction detection module
Control end is connected with the input of counterflow-preventing current controller, the output end of counterflow-preventing current controller and the control of A.C. contactor
End connection processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621040585.0U CN206004300U (en) | 2016-09-07 | 2016-09-07 | Counterflow-preventing current detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621040585.0U CN206004300U (en) | 2016-09-07 | 2016-09-07 | Counterflow-preventing current detecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206004300U true CN206004300U (en) | 2017-03-08 |
Family
ID=58194055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621040585.0U Active CN206004300U (en) | 2016-09-07 | 2016-09-07 | Counterflow-preventing current detecting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206004300U (en) |
-
2016
- 2016-09-07 CN CN201621040585.0U patent/CN206004300U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102496923A (en) | Input circuit with reverse connection preventing protection | |
| CN105071527A (en) | Small-power host modular fire-fighting emergency power supply | |
| CN202904280U (en) | Control circuit approaching to zero standby power consumption | |
| CN202372602U (en) | Reverse connection detecting circuit for batteries | |
| CN206004300U (en) | Counterflow-preventing current detecting system | |
| CN204068210U (en) | Short-circuit protection circuit | |
| CN104727382A (en) | Tap water pipe net with vertical type spontaneous power generation function | |
| CN203632335U (en) | Power supply of wind power variable pitch control system with redundant design | |
| CN204462339U (en) | A kind of electric quantity detecting circuit and solar water heater control panel | |
| CN204790498U (en) | Mining ann's type data acquisition system | |
| CN204290295U (en) | A kind of short-circuit protection circuit and electric supply installation | |
| CN202712954U (en) | Power supply integrated conducting wire transmitter of wind driven generator for auxiliary motor | |
| CN204258326U (en) | A kind of photovoltaic generating system | |
| CN201194326Y (en) | Protection apparatus preventing reverse connection for DC power source | |
| CN204012907U (en) | A kind of solar power generation drops into conversion equipment automatically | |
| CN104485647A (en) | Short-circuit protection circuit and power supply device | |
| CN202455116U (en) | Novel discharge control circuit | |
| CN204361654U (en) | A kind of rack power-supply controller of electric | |
| CN204316320U (en) | A kind of relay reducing protective circuit for photovoltaic DC-to-AC converter | |
| CN203536999U (en) | Power supply module for intelligent power control equipment | |
| CN201363238Y (en) | Wind generator | |
| CN203398751U (en) | Air breaker controlled by electronic circuit | |
| CN202797963U (en) | Reverse-current resistant and zero-power-consumption adjuster | |
| CN202565000U (en) | High heat dispersion single circuit power-supply emergency power supply cabinet | |
| CN104410269A (en) | Direct-current power supply converting circuit and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |