CN203761057U - Anti-reverse-flow control system based on ARM architecture - Google Patents
Anti-reverse-flow control system based on ARM architecture Download PDFInfo
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- CN203761057U CN203761057U CN201320757109.0U CN201320757109U CN203761057U CN 203761057 U CN203761057 U CN 203761057U CN 201320757109 U CN201320757109 U CN 201320757109U CN 203761057 U CN203761057 U CN 203761057U
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- China
- Prior art keywords
- control system
- system based
- photovoltaic
- master controller
- counterflow
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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
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Inverter Devices (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The utility model discloses an anti-reverse-flow control system based on an ARM architecture, comprising a main controller adopting the ARM architecture and a relay, AC contactors, a voltage collection module, current sampling sensors, a power supply module, a touch screen and a computer which are connected to the main controller. Air switches are positioned between a photovoltaic inverter and an electric grid side; one ends of the voltage collection modules are connected to the air switches and the other ends are connected to the AC contactors; the other ends of the AC contactors are connected to the photovoltaic inverter; the main controller controls the AC contactors through the relay; and the main controller is provided with an A/D data collection module which is respectively connected to the voltage collection module and the current sampling sensors. Compared with the prior art, the anti-reverse-flow control system based on the ARM architecture can quickly regulate the output power of the inverter and promptly prevent the reverse power. When the main controller detects the communication defaults, the main controller directly breaks off the AC contactors and eliminates facts that the corresponding control cannot be performed when the reverse flow happens.
Description
Technical field
The utility model relates to solar photovoltaic grid-connection field, especially relates to a kind of counterflow-preventing control system based on ARM framework.
Background technology
For the grid-connected photovoltaic system of low-voltage network side, it is generally acknowledged that photovoltaic generation power is not more than 20% of grid-connected side higher level's distribution transformer capacity.At present, it is irreversible electricity generation system that Utilities Electric Co. requires photovoltaic parallel in system conventionally, and photovoltaic parallel in system electricity is consumed by this locality load, and unnecessary electricity does not allow by the reverse conveying of low voltage distribution transformer superior electrical network.
In grid-connected system, because external environment condition is constantly to change, in order to prevent that the reverse generating of photovoltaic parallel in system from improving the utilance of photovoltaic parallel in system electricity simultaneously, system need to configure a set of counterflow-preventing control system, by the voltage of Real-Time Monitoring distribution transformer low tension outlet side, the generated output that current signal regulates photovoltaic generating system, thereby reach the counterflow-preventing function of photovoltaic parallel in system and improve the utilance of photovoltaic DC-to-AC converter generating.
Utility model content
The purpose of this utility model is exactly to provide a kind of counterflow-preventing control system based on ARM framework in order to overcome the defect that above-mentioned prior art exists.
The purpose of this utility model can be achieved through the following technical solutions: a kind of counterflow-preventing control system based on ARM framework, be connected with photovoltaic DC-to-AC converter and grid side respectively, on described photovoltaic DC-to-AC converter and the line of grid side, be connected with local load, it is characterized in that, this control system comprises the master controller that adopts ARM framework, and the relay being connected with master controller respectively, A.C. contactor, voltage acquisition module, current sample transducer, power supply module, touch-screen and PC, between described photovoltaic DC-to-AC converter and grid side, be provided with air switch, described voltage acquisition module one end is connected with air switch, the other end is connected with A.C. contactor, the described A.C. contactor other end is connected with photovoltaic DC-to-AC converter, described master controller is by Control A.C. contactor, described master controller is provided with A/D data acquisition module, described A/D data acquisition module is connected with voltage acquisition module and current sample transducer respectively.
It is corresponding one by one that described photovoltaic DC-to-AC converter is provided with multiple, described photovoltaic DC-to-AC converters, A.C. contactor and relay.
Described photovoltaic DC-to-AC converter is no more than 10.
Described master controller is by RS485 or Ethernet and photovoltaic DC-to-AC converter communication.
Described master controller is by RS485 or Ethernet and PC communication.
Described master controller is by RS232 and touch-screen communication.
Described comprise+12V of power supply module relay power, ± 12V current sensor power supply ,+24V touch-screen power supply and+5V power supply.
Described master controller also comprises memory, is used for the historical data of saved system.
Described counterflow-preventing set-up of control system is in control cubicle.
Compared with prior art, the utlity model has following advantage:
1,, in preventing adverse current, the power output of energy quick adjustment inverter, prevents the appearance of inverse probability in time.
2, there is good human-computer interaction interface, higher security performance, anti-harsh weather performance and resistance to wear are provided.
3, in the time that master controller detects communication failure, master controller directly disconnects the A.C. contactor of controlling output, stops, to grid side power supply, while stopping adverse current occurs, cannot controlling accordingly.
Brief description of the drawings
Fig. 1 is electrical schematic diagram of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
As shown in Figure 1, a kind of counterflow-preventing control system based on ARM framework, be arranged in control cubicle, be connected with photovoltaic DC-to-AC converter 1 and grid side 2 respectively, on described photovoltaic DC-to-AC converter 1 and the line of grid side 2, be connected with local load 3, it is characterized in that, this control system comprises the master controller MCU that adopts ARM framework, and the relay 4 being connected with master controller MCU respectively, A.C. contactor 5, voltage acquisition module 6, current sample transducer 7, power supply module, touch-screen 9 and PC 10, described master controller adopts ARMCortex-M3 chip, between described photovoltaic DC-to-AC converter 1 and grid side 2, be provided with air switch 11, described voltage acquisition module 6 one end are connected with air switch 11, the other end is connected with A.C. contactor 5, described A.C. contactor 5 other ends are connected with photovoltaic DC-to-AC converter 1, described master controller MCU controls A.C. contactor 5 by relay 4, described master controller MCU is provided with A/D data acquisition module, described A/D data acquisition module is connected with voltage acquisition module 6 and current sample transducer 7 respectively.It is corresponding one by one that described photovoltaic DC-to-AC converter 1 is provided with multiple, described photovoltaic DC-to-AC converter 1, A.C. contactor 5 and relay 4.Described photovoltaic DC-to-AC converter 1 is no more than 10.Described master controller MCU is by RS485 or Ethernet and photovoltaic DC-to-AC converter 1 communication.Described master controller MCU is by RS485 or Ethernet and PC 10 communications.Described master controller MCU is by RS232 and touch-screen 9 communications.Described comprise+12V of power supply module relay power 81, ± 12V current sensor power supply 82 ,+24V touch-screen power supply 83 and+5V power supply 84.Described master controller MCU also comprises memory, is used for the historical data of saved system.
Operation principle: the A/D data acquisition module of described master controller obtains the voltage that voltage acquisition module gathers, obtains the electric current that current sample transducer gathers, and obtains the electrical network power scale Pt of actual measurement; Master controller judges whether grid side power P t is greater than the default power ratio control Ps of master controller, that master controller puts into operation photovoltaic DC-to-AC converter gradually, otherwise master controller disconnects A.C. contactor gradually by control relay, then inverter is disconnected gradually, reduce inverter power output, until all inverter cuts out; In the time that inverse probability appears in system, judge that inverse probability occurs that the duration whether within the default duration, is to ignore, and continues normally operation; Otherwise master controller disconnects inverter within the time limiting, if still there is adverse current disconnect inverter within the time limiting after, direct closed relay; In the time there is communication failure, master controller directly cuts out the A.C. contactor that is connected to photovoltaic DC-to-AC converter, prevents the generation of adverse current.
Claims (9)
1. the counterflow-preventing control system based on ARM framework, be connected with photovoltaic DC-to-AC converter and grid side respectively, on described photovoltaic DC-to-AC converter and the line of grid side, be connected with local load, it is characterized in that, this control system comprises the master controller that adopts ARM framework, and the relay being connected with master controller respectively, A.C. contactor, voltage acquisition module, current sample transducer, power supply module, touch-screen and PC, between described photovoltaic DC-to-AC converter and grid side, be provided with air switch, described voltage acquisition module one end is connected with air switch, the other end is connected with A.C. contactor, the described A.C. contactor other end is connected with photovoltaic DC-to-AC converter, described master controller is by Control A.C. contactor, described master controller is provided with A/D data acquisition module, described A/D data acquisition module is connected with voltage acquisition module and current sample transducer respectively.
2. a kind of counterflow-preventing control system based on ARM framework according to claim 1, is characterized in that, it is corresponding one by one that described photovoltaic DC-to-AC converter is provided with multiple, described photovoltaic DC-to-AC converters, A.C. contactor and relay.
3. a kind of counterflow-preventing control system based on ARM framework according to claim 1, is characterized in that, described photovoltaic DC-to-AC converter is no more than 10.
4. a kind of counterflow-preventing control system based on ARM framework according to claim 1, is characterized in that, described master controller is by RS485 or Ethernet and photovoltaic DC-to-AC converter communication.
5. a kind of counterflow-preventing control system based on ARM framework according to claim 1, is characterized in that, described master controller is by RS485 or Ethernet and PC communication.
6. a kind of counterflow-preventing control system based on ARM framework according to claim 1, is characterized in that, described master controller is by RS232 and touch-screen communication.
7. a kind of counterflow-preventing control system based on ARM framework according to claim 1, is characterized in that, described comprise+12V of power supply module relay power, ± 12V current sensor power supply ,+24V touch-screen power supply and+5V power supply.
8. a kind of counterflow-preventing control system based on ARM framework according to claim 1, is characterized in that, described master controller also comprises memory, is used for the historical data of saved system.
9. a kind of counterflow-preventing control system based on ARM framework according to claim 1, is characterized in that, described counterflow-preventing set-up of control system is in control cubicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320757109.0U CN203761057U (en) | 2013-11-26 | 2013-11-26 | Anti-reverse-flow control system based on ARM architecture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320757109.0U CN203761057U (en) | 2013-11-26 | 2013-11-26 | Anti-reverse-flow control system based on ARM architecture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203761057U true CN203761057U (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320757109.0U Expired - Fee Related CN203761057U (en) | 2013-11-26 | 2013-11-26 | Anti-reverse-flow control system based on ARM architecture |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104779640A (en) * | 2015-04-15 | 2015-07-15 | 上海追日电气有限公司 | System for preventing distributed power generation system from reversing electric power to power grid and control method |
-
2013
- 2013-11-26 CN CN201320757109.0U patent/CN203761057U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104779640A (en) * | 2015-04-15 | 2015-07-15 | 上海追日电气有限公司 | System for preventing distributed power generation system from reversing electric power to power grid and control method |
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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: 20140806 Termination date: 20201126 |
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| CF01 | Termination of patent right due to non-payment of annual fee |