CN104135073B - A kind of distributed solar energy cutting-in control case and control method - Google Patents

A kind of distributed solar energy cutting-in control case and control method Download PDF

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Publication number
CN104135073B
CN104135073B CN201410339649.6A CN201410339649A CN104135073B CN 104135073 B CN104135073 B CN 104135073B CN 201410339649 A CN201410339649 A CN 201410339649A CN 104135073 B CN104135073 B CN 104135073B
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China
Prior art keywords
computer processor
operating mechanism
circuit breaker
motor
electrical network
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CN201410339649.6A
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CN104135073A (en
Inventor
谢翠斌
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TAIXING HUACHENG ELECTROMECHANICAL MANUFACTURING CO LTD
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TAIXING HUACHENG ELECTROMECHANICAL MANUFACTURING CO LTD
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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
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS 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
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
    • Y04S10/123—Monitoring 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
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS 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
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/40—Display of information, e.g. of data or controls

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  • Supply And Distribution Of Alternating Current (AREA)
  • Inverter Devices (AREA)

Abstract

The present invention relates to a kind of distributed solar energy cutting-in control case and control method, control cabinet is connected between solar inverter and electrical network, control cabinet comprises circuit breaker, motor-operating mechanism, device for under-voltage releasing equipment, AC/DC Switching Power Supply, kilowatt-hour meter, computer processor and display screen, solar inverter connecting breaker, circuit breaker connects motor-operating mechanism respectively, device for under-voltage releasing equipment, AC/DC Switching Power Supply, kilowatt-hour meter and computer processor, kilowatt-hour meter is connected to electrical network, under-voltage coil in device for under-voltage releasing equipment connecting breaker, kilowatt-hour meter, display screen, motor-operating mechanism is connected computer processor with AC/DC Switching Power Supply.Generating voltage and line voltage can be monitored in real time, control the break-make that user powers on to electrical network of generating electricity by way of merging two or more grid systems, guarantee that electricity generation system is used safely.

Description

A kind of distributed solar energy cutting-in control case and control method
Technical field
The present invention relates to solar energy field of new energy utilization, is a kind of distributed solar energy cutting-in control case and control method specifically.
Background technology
Solar energy power generating relies on solar module, utilizes the electronics property of semi-conducting material, light energy conversion is become electric energy.Grid-connected system becomes receive next solar radiation energy into high voltage direct current by photovoltaic array after high-frequency direct-current conversion, exports and the simple sinusoidal alternating current of line voltage with frequency, homophase after inverter inversion to electrical network.Grid-connected photovoltaic system is exactly that solar photovoltaic generation system is connected with normal grid, and shared is powered task.Inverter by photovoltaic system the DC inverter sent out become sinusoidal ac, the alternating current of generation directly can supply AC load, then by remaining electric energy input electrical network, or is directly connected to the grid by the whole electric energy produced.Due to difference and the generating of network users source different, if the uneven power supply of a large amount of access quality of power supply in electrical network, voltage ripple of power network, voltage deviation etc. may be caused, produce line voltage thus to fluctuate by a relatively large margin on load voltage value, easily cause the feedback to consumer networks, cause the damage of user's generating equipment.
Summary of the invention
For above-mentioned deficiency of the prior art, the invention provides one and can monitor generating voltage and line voltage in real time, control the break-make that user powers on to electrical network of generating electricity by way of merging two or more grid systems, guarantee the distributed solar energy cutting-in control case that electricity generation system is used safely and control method.
The technical solution used in the present invention is: a kind of distributed solar energy cutting-in control case, control cabinet is connected between solar inverter and electrical network, it is characterized in that: described control cabinet comprises circuit breaker, motor-operating mechanism, device for under-voltage releasing equipment, AC/DC Switching Power Supply, kilowatt-hour meter, computer processor and display screen, solar inverter connecting breaker, circuit breaker connects motor-operating mechanism respectively, device for under-voltage releasing equipment, AC/DC Switching Power Supply, kilowatt-hour meter and computer processor, kilowatt-hour meter is connected to electrical network, under-voltage coil in device for under-voltage releasing equipment connecting breaker, kilowatt-hour meter, display screen, motor-operating mechanism is connected computer processor with AC/DC Switching Power Supply.
Further, described display screen is long-range and/or short range touch operation display screen, and display screen connects motor-operating mechanism.
Further, described motor-operating mechanism is the adaptive switched motor-operating mechanism of hand.
A control method for distributed solar energy cutting-in control case, control method is:
A. electrical network powers on first, breaker closing, computer processor by AC/DC Switching Power Supply obtain electric after, first detection display screen, kilowatt-hour meter and the communication state between it, when after these two kinds of equipment with computer processor communication normally, the state of circuit breaker is read while computer processor reads watt-hour meter voltage value by communication, computer processor judges that whether line voltage value is at electrical network load voltage value, when line voltage value is within the 80%-120% of electrical network load voltage value, circuit breaker will keep original state; When line voltage value is in less than 80% or more than 120% of electrical network load voltage value, control circuit breaker trips by computer processor;
B. and network process in, when computer processor judges that line voltage value is within 80%-85% or 115%-120% of electrical network load voltage value, circuit breaker will keep original state, when computer processor judges that line voltage value is within the 85%-115% of electrical network load voltage value, computer processor reads the state of motor-operating mechanism, if at auto state and circuit breaker is in gate-dividing state, time delay 1s is controlled electric operating mechanism of circuit-breaker and closes a floodgate and show by computer processor; If when motor-operating mechanism is in artificial state, computer processor reading displayed screen state, realizes nearly control and/or control far away carries out long-range splitting or integrating lock and show state to circuit breaker.
Adopt technique scheme, the invention has the beneficial effects as follows: electrical network powers on first, that detects each parts obtains electric situation, and when powering on, detect generating voltage and line voltage, voltage ripple of power network or under-voltage time, select to control by computer processor device for under-voltage releasing equipment to realize circuit breaker sub-switching operation via under-voltage coil and/or motor-operating mechanism, effectively avoid, to generating user damage, guaranteeing that system safety uses.
Accompanying drawing explanation
Fig. 1 is structure diagram of the present invention.
In figure: solar inverter 1, electrical network 2, circuit breaker 3, motor-operating mechanism 4, device for under-voltage releasing equipment 5, AC/DC Switching Power Supply 6, kilowatt-hour meter 7, computer processor 8, display screen 9.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
Shown in Fig. 1, a kind of distributed solar energy cutting-in control case is connected between solar inverter 1 and electrical network 2, and control cabinet comprises circuit breaker 3, motor-operating mechanism 4, device for under-voltage releasing equipment 5, AC/DC Switching Power Supply 6, kilowatt-hour meter 7, computer processor 8, display screen 9.Solar inverter 1 connecting breaker 3, circuit breaker 3 connects motor-operating mechanism 4, device for under-voltage releasing equipment 5, AC/DC Switching Power Supply 6, kilowatt-hour meter 7 and computer processor 8 respectively, kilowatt-hour meter 7 is connected to electrical network 2, under-voltage coil in device for under-voltage releasing equipment 5 connecting breaker 3, kilowatt-hour meter 7, display screen 9, motor-operating mechanism 4 are connected computer processor 8 with AC/DC Switching Power Supply 6, display screen is long-range and/or short range touch operation display screen, and display screen connects motor-operating mechanism.Motor-operating mechanism is the adaptive switched motor-operating mechanism of hand.
The control method of control cabinet is:
A. electrical network powers on first, breaker closing, computer processor by AC/DC Switching Power Supply obtain electric after, first detection display screen, kilowatt-hour meter and the communication state between it, when after these two kinds of equipment with computer processor communication normally, the state of circuit breaker is read while computer processor reads watt-hour meter voltage value by communication, computer processor judges that whether line voltage value is at electrical network load voltage value, when line voltage value is within the 80%-120% of electrical network load voltage value, circuit breaker will keep original state; When line voltage value is in less than 80% or more than 120% of electrical network load voltage value, control circuit breaker trips by computer processor;
B. and network process in, when computer processor judges that line voltage value is within 80%-85% or 115%-120% of electrical network load voltage value, circuit breaker will keep original state, when computer processor judges that line voltage value is within the 85%-115% of electrical network load voltage value, computer processor reads the state of motor-operating mechanism, if at auto state and circuit breaker is in gate-dividing state, time delay 1s is controlled electric operating mechanism of circuit-breaker and closes a floodgate and show by computer processor; If when motor-operating mechanism is in artificial state, computer processor reading displayed screen state, realizes nearly control and/or control far away carries out long-range splitting or integrating lock and show state to circuit breaker.

Claims (3)

1. a distributed solar energy cutting-in control case, control cabinet is connected between solar inverter and electrical network, it is characterized in that: described control cabinet comprises circuit breaker, motor-operating mechanism, device for under-voltage releasing equipment, AC/DC Switching Power Supply, kilowatt-hour meter, computer processor and display screen, solar inverter connecting breaker, circuit breaker connects motor-operating mechanism respectively, device for under-voltage releasing equipment, AC/DC Switching Power Supply, kilowatt-hour meter and computer processor, kilowatt-hour meter is connected to electrical network, under-voltage coil in device for under-voltage releasing equipment connecting breaker, kilowatt-hour meter, display screen, motor-operating mechanism is connected computer processor with AC/DC Switching Power Supply, electrical network powers on first, after breaker closing, computer processor by AC/DC Switching Power Supply obtain electric after first detection display shield, kilowatt-hour meter and the communication state between it, when after these two kinds of equipment and computer processor communication normally, read the state of circuit breaker while computer processor reads the magnitude of voltage of kilowatt-hour meter by communication, computer processor judges, when line voltage value is within the 80%-120% of electrical network load voltage value, circuit breaker will keep original state, when line voltage value is in less than 80% or more than 120% of electrical network load voltage value, control circuit breaker trips by computer processor, and in network process, when computer processor judges that line voltage value is within 80%-85% or 115%-120% of electrical network load voltage value, circuit breaker will keep original state, when computer processor judges that line voltage value is within the 85%-115% of electrical network load voltage value, computer processor reads the state of motor-operating mechanism, if at auto state and circuit breaker is in gate-dividing state, time delay 1s is controlled circuit breaker by computer processor, and motor-operating mechanism closes a floodgate and shows, if when motor-operating mechanism is in artificial state, computer processor reading displayed screen state, realizes nearly control and/or control far away carries out long-range splitting or integrating lock and show state to circuit breaker.
2. a kind of distributed solar energy cutting-in control case according to claim 1, is characterized in that: described display screen is long-range and/or short range touch operation display screen, and display screen connects motor-operating mechanism.
3. a kind of distributed solar energy cutting-in control case according to claim 1 and 2, is characterized in that: described motor-operating mechanism is the adaptive switched motor-operating mechanism of hand.
CN201410339649.6A 2014-07-17 2014-07-17 A kind of distributed solar energy cutting-in control case and control method Active CN104135073B (en)

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Publication number Priority date Publication date Assignee Title
CN104135029A (en) * 2014-07-17 2014-11-05 泰兴市华诚机电制造有限公司 Distributed solar grid-connected control box
CN104410100B (en) * 2014-11-11 2017-02-01 国家电网公司 Distributive photovoltaic generating grid-connected smart black box and application thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102545087A (en) * 2012-01-12 2012-07-04 天津市电力公司 Multifunctional power distribution cabinet special for microgrid system
CN102867712A (en) * 2011-05-20 2013-01-09 中环光伏系统有限公司 Breaker for solar cell component string and protecting method
CN103178542A (en) * 2013-03-12 2013-06-26 南京南瑞太阳能科技有限公司 Distributed power grid-connection interface system and control method thereof
CN204118758U (en) * 2014-07-17 2015-01-21 泰兴市华诚机电制造有限公司 A kind of distributed solar energy cutting-in control case

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Publication number Priority date Publication date Assignee Title
JPH08126206A (en) * 1994-10-28 1996-05-17 Kyocera Corp Power supply device
US20090189445A1 (en) * 2008-01-24 2009-07-30 Renewable Energy Holdings, Llc Renewable energy management and storage system
CN203660549U (en) * 2013-09-17 2014-06-18 北京北变微电网技术有限公司 Distributed photovoltaic intelligent grid connection box
CN103595348B (en) * 2013-11-19 2016-01-13 安泰科技股份有限公司 Family photovoltaic intelligent control system

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
CN102867712A (en) * 2011-05-20 2013-01-09 中环光伏系统有限公司 Breaker for solar cell component string and protecting method
CN102545087A (en) * 2012-01-12 2012-07-04 天津市电力公司 Multifunctional power distribution cabinet special for microgrid system
CN103178542A (en) * 2013-03-12 2013-06-26 南京南瑞太阳能科技有限公司 Distributed power grid-connection interface system and control method thereof
CN204118758U (en) * 2014-07-17 2015-01-21 泰兴市华诚机电制造有限公司 A kind of distributed solar energy cutting-in control case

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