CN104135029A - Distributed solar grid-connected control box - Google Patents
Distributed solar grid-connected control box Download PDFInfo
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- CN104135029A CN104135029A CN201410339423.6A CN201410339423A CN104135029A CN 104135029 A CN104135029 A CN 104135029A CN 201410339423 A CN201410339423 A CN 201410339423A CN 104135029 A CN104135029 A CN 104135029A
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Abstract
The invention relates to a distributed solar gird-connected control box. The control box is connected between a solar inverter and a power grid and comprises a circuit breaker, an electric operating mechanism, an under-voltage tripper, an AC/DC switching power supply, an electricity meter, a computer processor and a display screen, wherein the solar inverter is connected with the circuit breaker, the circuit breaker is connected with the electric operating mechanism, the under-voltage tripper, the AC/DC switching power supply, the electricity meter and the computer processor respectively, the electricity meter is connected to the power grid, the under-voltage tripper is connected with an internal under-voltage coil of the circuit breaker, and the electricity meter, the display screen, the electric operating mechanism and the AC/DC switching power supply are connected to the computer processor. By the distributed solar grid-connected control box, generation voltage and power grid voltage can be monitored in real time, switching on and switching off of the power grid by a grid-connected generation user are controlled, and a generation system is ensured to safely run.
Description
Technical field
The present invention relates to solar energy utilization of new energy resources field, is the grid-connected control cabinet of a kind of distributed solar energy specifically.
Background technology
Solar energy power generating is to rely on solar module, utilizes the electronics property of semi-conducting material, and light energy conversion is become to electric energy.Grid-connected system becomes receive the solar radiation energy coming into high voltage direct current by photovoltaic array after high-frequency direct-current is changed, through the backward electrical network output of inverter inversion and the simple sinusoidal alternating current of line voltage with frequency, homophase.Grid-connected photovoltaic system is exactly that solar photovoltaic generation system is connected with conventional electrical network, shared power supply task.The DC inverter that inverter is sent out photovoltaic system becomes sinusoidal ac, and the alternating current of generation can directly be supplied with AC load, then by remaining electric energy input electrical network, or directly the whole electric energy that produce is connected to the grid.Because the generating source of difference network users is different, if access in a large number the uneven power supply of the quality of power supply in electrical network, may cause voltage ripple of power network, voltage deviation etc., produce thus line voltage fluctuation 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 in real time generating voltage and line voltage, control the break-make that the user of generating electricity by way of merging two or more grid systems powers on to electrical network, guarantee the grid-connected control cabinet of distributed solar energy and the control method of electricity generation system safe handling.
The technical solution used in the present invention is: the grid-connected control cabinet of a kind of distributed solar energy, 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 respectively motor-operating mechanism, 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 touches operating display, 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 the grid-connected control cabinet of distributed solar energy, 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, after these two kinds of equipment and computer processor communication are normal, when computer processor reads watt-hour meter voltage value by communication and read the state of circuit breaker, computer processor judges that whether line voltage value is at electrical network load voltage value, in 80%-120% in line voltage value in electrical network load voltage value time, circuit breaker will keep original state; In line voltage value, in below 80% or when 120% is above of electrical network load voltage value, computer processor trips control circuit breaker;
B. and network process in, in computer processor judges the 80%-85% of line voltage value in electrical network load voltage value or 115%-120% time, circuit breaker will keep original state, in computer processor judges the 85%-115% of line voltage value in electrical network load voltage value time, computer processor reads the state of motor-operating mechanism, if be in gate-dividing state at auto state and circuit breaker, computer processor is controlled electric operating mechanism of circuit-breaker by time delay 1s and is closed a floodgate and show; If motor-operating mechanism is in the time of artificial state, computer processor reading displayed screen state, realizes nearly control and/or control far away is carried out long-range splitting or integrating lock show state to circuit breaker.
Adopt technique scheme, the invention has the beneficial effects as follows: electrical network powers on first, detect the electric situation that obtains of each parts, and in the time powering on, detect generating voltage and line voltage, at voltage ripple of power network or when under-voltage, select to be realized via under-voltage coil and/or motor-operating mechanism by computer processor control device for under-voltage releasing equipment the sub-switching operation of circuit breaker, effectively avoid the damage to generating user, guarantee that system safety is used.
Brief description of the drawings
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, the grid-connected control cabinet of a kind of distributed solar energy 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 respectively 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, kilowatt-hour meter 7 is connected to electrical network 2, the interior under-voltage coil of device for under-voltage releasing equipment 5 connecting breaker 3, kilowatt-hour meter 7, display screen 9, motor-operating mechanism 4 and AC/DC Switching Power Supply 6 are connected computer processor 8, display screen is long-range and/or short range touches operating display, 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, after these two kinds of equipment and computer processor communication are normal, when computer processor reads watt-hour meter voltage value by communication and read the state of circuit breaker, computer processor judges that whether line voltage value is at electrical network load voltage value, in 80%-120% in line voltage value in electrical network load voltage value time, circuit breaker will keep original state; In line voltage value, in below 80% or when 120% is above of electrical network load voltage value, computer processor trips control circuit breaker;
B. and network process in, in computer processor judges the 80%-85% of line voltage value in electrical network load voltage value or 115%-120% time, circuit breaker will keep original state, in computer processor judges the 85%-115% of line voltage value in electrical network load voltage value time, computer processor reads the state of motor-operating mechanism, if be in gate-dividing state at auto state and circuit breaker, computer processor is controlled electric operating mechanism of circuit-breaker by time delay 1s and is closed a floodgate and show; If motor-operating mechanism is in the time of artificial state, computer processor reading displayed screen state, realizes nearly control and/or control far away is carried out long-range splitting or integrating lock show state to circuit breaker.
Claims (3)
1. the grid-connected control cabinet of distributed solar energy, 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 respectively motor-operating mechanism, 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.
2. the grid-connected control cabinet of a kind of distributed solar energy according to claim 1, is characterized in that: described display screen is long-range and/or short range touches operating display, and display screen connects motor-operating mechanism.
3. the grid-connected control cabinet of a kind of distributed solar energy according to claim 1 and 2, is characterized in that: described motor-operating mechanism is the adaptive switched motor-operating mechanism of hand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410339423.6A CN104135029A (en) | 2014-07-17 | 2014-07-17 | Distributed solar grid-connected control box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410339423.6A CN104135029A (en) | 2014-07-17 | 2014-07-17 | Distributed solar grid-connected control box |
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| Publication Number | Publication Date |
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| CN104135029A true CN104135029A (en) | 2014-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410339423.6A Pending CN104135029A (en) | 2014-07-17 | 2014-07-17 | Distributed solar grid-connected control box |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105071439A (en) * | 2015-08-14 | 2015-11-18 | 国家电网公司 | Photovoltaic inversion single-phase AC grid-connected box |
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| US20090189445A1 (en) * | 2008-01-24 | 2009-07-30 | Renewable Energy Holdings, Llc | Renewable energy management and storage system |
| CN103595348A (en) * | 2013-11-19 | 2014-02-19 | 安泰科技股份有限公司 | Household photovoltaic intelligent control 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 |
| CN203690942U (en) * | 2014-01-24 | 2014-07-02 | 嘉兴恒创电力设计研究院有限公司 | Single-phase 220V household photovoltaic grid connection box |
| CN104135073A (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 and control method |
| 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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2014
- 2014-07-17 CN CN201410339423.6A patent/CN104135029A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103595348A (en) * | 2013-11-19 | 2014-02-19 | 安泰科技股份有限公司 | Household photovoltaic intelligent control system |
| CN203690942U (en) * | 2014-01-24 | 2014-07-02 | 嘉兴恒创电力设计研究院有限公司 | Single-phase 220V household photovoltaic grid connection box |
| CN104135073A (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 and control method |
| 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105071439A (en) * | 2015-08-14 | 2015-11-18 | 国家电网公司 | Photovoltaic inversion single-phase AC grid-connected box |
| CN105071439B (en) * | 2015-08-14 | 2017-08-15 | 国家电网公司 | Photovoltaic inversion single phase ac grid connection box |
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Application publication date: 20141105 |