CN207251223U - A kind of grid-connected interface arrangement - Google Patents

A kind of grid-connected interface arrangement Download PDF

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Publication number
CN207251223U
CN207251223U CN201721175296.6U CN201721175296U CN207251223U CN 207251223 U CN207251223 U CN 207251223U CN 201721175296 U CN201721175296 U CN 201721175296U CN 207251223 U CN207251223 U CN 207251223U
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CN
China
Prior art keywords
unit
grid
main control
shut brake
control unit
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.)
Expired - Fee Related
Application number
CN201721175296.6U
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Chinese (zh)
Inventor
孟繁荣
石清
杨志博
孙海淇
武香群
狄晓东
白松岭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Zealink Electrical Tech Co Ltd
JIANGSU ZEALINK ELECTRICAL TECHNOLOGY Co Ltd
Original Assignee
Jiangsu Zealink Electrical Tech Co Ltd
JIANGSU ZEALINK ELECTRICAL TECHNOLOGY Co Ltd
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Filing date
Publication date
Application filed by Jiangsu Zealink Electrical Tech Co Ltd, JIANGSU ZEALINK ELECTRICAL TECHNOLOGY Co Ltd filed Critical Jiangsu Zealink Electrical Tech Co Ltd
Priority to CN201721175296.6U priority Critical patent/CN207251223U/en
Application granted granted Critical
Publication of CN207251223U publication Critical patent/CN207251223U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/56Power conversion systems, e.g. maximum power point trackers
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/70Smart grids as climate change mitigation technology in the energy generation sector
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00Systems supporting electrical power generation, transmission or distribution
    • Y04S10/12Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
    • Y04S10/123Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving renewable energy sources
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00Systems supporting electrical power generation, transmission or distribution
    • Y04S10/50Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications

Abstract

The utility model provides a kind of grid-connected interface arrangement, including n roads exchange collector-shoe gear n >=1, automatic switching off/on device, electrical energy measurement unit, main control unit and man-machine interaction unit.The output terminal connection power grid of the main circuit module of the automatic divide-shut brake unit, the input terminal of the state output end connection main control unit of the automatic divide-shut brake unit;The electrical energy measurement unit is used for the current-voltage information and generated energy information for gathering the main circuit module of the automatic divide-shut brake unit;The main control unit is used to be controlled automatic divide-shut brake unit, and transmits data to remote data center.The man-machine interaction unit is used to show the information such as electric current, voltage, generated energy.The utility model has provided the distributed power supply smart interface for integrating the functions such as measurement, protection, monitoring, communication to the user, shortens grid-connected link, accelerates the utilization of regenerative resource, Optimization Support power grid security and stable operation.

Description

A kind of grid-connected interface arrangement
Technical field
The utility model belongs to Photovoltaic new energy technical field, more particularly to a kind of grid-connected interface arrangement.
Background technology
The application scheme of major part parallel network power generation at present, is to produce alternating current by photovoltaic DC-to-AC converter, and header box converges, Transformer boosts, and is connected to the grid finally by special switch cabinet.Since grid-connected link is more, system reliability is difficult to ensure;By Power grid is accessed in a large amount of distributed generation resources, the function such as big measurement, protection, monitoring, communication, control and management and user service has Wait to refine and concentrate solution.
Utility model content
In order to solve problem above, in order to realize that the comprehensively monitoring of power grid distributed generation resource grid entry point, protection and safety are anti- Shield, and provide intelligentized interactive function to the user, the utility model proposes a kind of grid-connected interface arrangement, including successively The n roads exchange collector-shoe gear (1) of electrical connection, n >=1, automatic divide-shut brake unit (2), electrical energy measurement unit (3), main control unit (4) and man-machine interaction unit (5);The automatic divide-shut brake unit (2) include main circuit module and with the main circuit module The under-voltage protection mechanism of electrical connection, the output terminal connection power grid of the main circuit module of the automatic divide-shut brake unit (2) are described The input terminal of the state output end connection main control unit (4) of automatic divide-shut brake unit (2);The electrical energy measurement unit (3) includes Current measurement instrument and metering ammeter, the electrical energy measurement unit (3) are used for the main electricity for gathering the automatic divide-shut brake unit (2) The current-voltage information and generated energy information of road module;The main control unit (4) includes main control board, intelligent data acquisition takes Business device, the main control unit (4) is used to be controlled automatic divide-shut brake unit, and transmits data to remote data center.
Further, the current measurement instrument of the electrical energy measurement unit (3) is contactless.
Further, the metering ammeter of the electrical energy measurement unit (3) is the standard metering ammeter of State Grid Corporation of China's accreditation.
Further, the main control board of the main control unit (4), for detect automatic divide-shut brake unit point, combined floodgate shape State, and under send point, feed motion instruction.
Further, the intelligent data acquisition server of the main control unit (4) transmits data to remote data center.
Further, the man-machine interaction unit (5) is used to show electric current, electricity that the main control unit (4) detects Pressure, generated energy information.
Grid-connected interface arrangement provided by the utility model, when a large amount of distributed generation resources access power grid, carries for user The distributed power supply smart interface for integrating the functions such as measurement, protection, monitoring, communication has been supplied, has accelerated the profit of regenerative resource With guarantee power grid security and stable operation.
Brief description of the drawings
Fig. 1 is a kind of structure diagram of grid-connected photovoltaic power generation system of the utility model;
In figure:1st, collector-shoe gear is exchanged, 2, automatic divide-shut brake unit, 3, electrical energy measurement unit, 4, main control unit, 5, man-machine Interactive unit.
Embodiment
The embodiment of grid-connected interface arrangement a kind of to the utility model carries out specifically below in conjunction with the accompanying drawings Bright, which is merely to illustrate the utility model rather than limitation the scope of the utility model, those skilled in the art couple The modification of the various equivalent forms of the utility model falls within the application appended claims limited range.
As shown in Figure 1, a kind of grid-connected interface arrangement, including n roads exchange collector-shoe gear 1, n >=1;Automatic divide-shut brake dress Put 2, electrical energy measurement unit 3, main control unit 4, the man-machine interaction unit 5 containing LED, LCD or other presentation modes.
When the exchange that more photovoltaic DC-to-AC converters produce is electrically accessed the input terminal of grid-connected interface arrangement, first, photovoltaic is simultaneously Multichannel AC electric current can be flowed on automatic divide-shut brake unit 2 by the n roads exchange collector-shoe gear 1 inside network interface device.It is described Automatic divide-shut brake unit 2 includes main circuit module and the under-voltage protection mechanism being electrically connected with the main circuit module, in main electricity Lu Shang, be provided with can the electrical equipment that cut-offs of each road electric current of independent control, such as each circuit breaker, electronic in input terminal installation Operating mechanism, overvoltage protection mechanism etc., are provided with main circuit breaker, the main circuit output terminal connection power grid is realized in output terminal It is grid-connected.Under-voltage protection mechanism protects machine when the alternating voltage for exchanging the remittance of collector-shoe gear 1 is less than grid-connected rated voltage condition Structure cuts off main circuit.The n roads exchange collector-shoe gear 1, and the feelings of grid-connected interface function are realized suitable for the input of a variety of multichannels Condition.
Secondly, automatic switching off/on device 2 is that basis measures the data such as electric current, voltage, carries out the automatic division of indoor design The device of lock so that grid entry point technical indicator meets the grid-connected requirement of power grid.The automatic switching off/on device 2 uses obvious cut-off point Design, meets the grid-connected requirement of power grid.
Again, the electrical energy measurement unit 3 for meeting national standard, the electric energy meter are mounted with inside grid-connected interface arrangement Amount unit 3 includes current measurement instrument and metering ammeter, and the current measurement instrument is contactless, automatic divide-shut brake unit 2 main circuit current information of voltage connects the current-voltage sampling input terminal of electrical energy measurement unit 3 by current measurement instrument.Institute The standard metering ammeter that metering ammeter is State Grid Corporation of China's accreditation is stated, grid entry point generated energy and power consumption can be measured.Electric energy Metering units 3 not only have electric current, voltage, generated energy detection function, the data detected can also be passed through 485 communication modes It is output to the main control board and intelligent data acquisition server of main control unit 4.
4th, the main control unit 4 of grid-connected interface arrangement can carry out Data Detection, contrast, and information communication, is realized certainly Dynamic control function, it includes main control board, intelligent data acquisition server.The main control board and automatic divide-shut brake unit 2 state output end connection, can directly detect main circuit breaker state, automatic opening and closing state, and pass through the electrical energy measurement list Member 3 gathers electric current, the information of voltage of main circuit;Moreover, main control board can be sent down point, feed motion is instructed to automatic Divide-shut brake unit 2, automatically controls automatic divide-shut brake unit 2.
The intelligent data acquisition server and remote data center carry out information exchange, by the electric current sampled, voltage, The data sendings such as generated energy are to remote data center.
Finally, the man-machine interaction unit 5, i.e. liquid crystal display, display device current state and main control unit 4 detect The information such as the electric current that arrives, voltage, generated energy, these information are showed with friendly man-machine interaction unit 5.
In implementation, the exchange that more photovoltaic DC-to-AC converters produce is electrically accessed grid-connected interface arrangement, grid-connected interface dress Multichannel AC electric current can be flowed on main circuit by the exchange collector-shoe gear 1 put, and main circuit connection power grid is realized grid-connected.Work as master control Circuit board detecting is in gate-dividing state to main circuit breaker, and is judged by threshold value comparison, and the voltage from electrical energy measurement unit 3 is adopted Sample data, when reaching grid-connected rated voltage condition, i.e., can send feed motion instruction.When main control board detects main open circuit Device is in "on" position, and is judged by threshold value comparison, the voltage sample data from electrical energy measurement unit 3, is higher than or low When grid-connected rated voltage condition, i.e., it can send separating brake action command.
The effect of the utility model is:It is integrated with the functions such as measurement, protection, monitoring, communication to be integrated, shortens grid-connected ring Section, accelerates the utilization of regenerative resource, ensures power network safety operation.The utility model can be realized comprehensive to grid entry point progress Close monitoring, protection and function of safety protection, using the teaching of the invention it is possible to provide intelligent interactive function.
The preferred embodiment of the utility model, still, the utility model and unlimited are described in detail above in association with attached drawing Detail in the above embodiment, can be to the skill of the utility model in the range of the technology design of the utility model Art scheme carries out a variety of simple variants, these simple variants belong to the scope of protection of the utility model.

Claims (6)

  1. A kind of 1. grid-connected interface arrangement, it is characterised in that including be sequentially connected electrically n roads exchange collector-shoe gear (1), n >= 1st, automatic divide-shut brake unit (2), electrical energy measurement unit (3), main control unit (4) and man-machine interaction unit (5);Wherein,
    The automatic divide-shut brake unit (2) includes main circuit module and the under-voltage protection machine being electrically connected with the main circuit module Structure, the output terminal connection power grid of the main circuit module of the automatic divide-shut brake unit (2), the automatic divide-shut brake unit (2) The input terminal of state output end connection main control unit (4);
    The electrical energy measurement unit (3) includes current measurement instrument and metering ammeter, and the electrical energy measurement unit (3) is used to gather The current-voltage information and generated energy information of the main circuit module of the automatic divide-shut brake unit (2);
    The main control unit (4) includes main control board, intelligent data acquisition server, and the main control unit (4) is used for certainly Dynamic divide-shut brake unit is controlled, and transmits data to remote data center.
  2. 2. grid-connected interface arrangement according to claim 1, it is characterised in that the electricity of the electrical energy measurement unit (3) Flow measuring instrument is contactless.
  3. 3. grid-connected interface arrangement according to claim 1, it is characterised in that the meter of the electrical energy measurement unit (3) Electrometer is the standard metering ammeter of State Grid Corporation of China's accreditation.
  4. 4. grid-connected interface arrangement according to claim 1, it is characterised in that the master control electricity of the main control unit (4) Road plate, for detect automatic divide-shut brake unit point, "on" position, and under send point, feed motion instructs.
  5. 5. grid-connected interface arrangement according to claim 1, it is characterised in that the intelligent number of the main control unit (4) Remote data center is transmitted data to according to acquisition server.
  6. 6. grid-connected interface arrangement according to claim 1, it is characterised in that the man-machine interaction unit (5) is used In the electric current, voltage, generated energy information that show that the main control unit (4) detects.
CN201721175296.6U 2017-09-14 2017-09-14 A kind of grid-connected interface arrangement Expired - Fee Related CN207251223U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721175296.6U CN207251223U (en) 2017-09-14 2017-09-14 A kind of grid-connected interface arrangement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721175296.6U CN207251223U (en) 2017-09-14 2017-09-14 A kind of grid-connected interface arrangement

Publications (1)

Publication Number Publication Date
CN207251223U true CN207251223U (en) 2018-04-17

Family

ID=61888731

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721175296.6U Expired - Fee Related CN207251223U (en) 2017-09-14 2017-09-14 A kind of grid-connected interface arrangement

Country Status (1)

Country Link
CN (1) CN207251223U (en)

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CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20180417

Termination date: 20200914