CN104143958A - Photovoltaic active safety system - Google Patents
Photovoltaic active safety system Download PDFInfo
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- CN104143958A CN104143958A CN201410365423.3A CN201410365423A CN104143958A CN 104143958 A CN104143958 A CN 104143958A CN 201410365423 A CN201410365423 A CN 201410365423A CN 104143958 A CN104143958 A CN 104143958A
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- photovoltaic
- security module
- module
- communication management
- active safety
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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
Abstract
The invention relates to a photovoltaic active safety system. The photovoltaic active safety system is composed of safety modules, communication management modules, monitoring modules, a DC arc direction device and the like. The DC arc direction device detects hidden arc fault hazards in a photovoltaic DC system in real time and eliminates the hidden hazards; the safety modules can safely shut off the photovoltaic system as needed, so that the high voltage danger of the photovoltaic DC system is eliminated, and the personal safety of installers, maintainers and firefighters is guaranteed; the safety modules can be automatically triggered and can be triggered through the communication management modules or the monitoring modules; the intelligent monitoring modules collect, analyze and process information of the photovoltaic system and sound an alarm for abnormal conditions. According to the photovoltaic active safety system, the hidden fire hazards of the distributed photovoltaic system can be greatly reduced, and it can be guaranteed that the distributed photovoltaic system achieves expected benefits.
Description
Technical field
The present invention relates to a kind of photovoltaic active safety system.
Background technology
In recent years, photovoltaic generation utilizes form to develop by ground light overhead utility emphasis to roof photovoltaic distributed, and there are residential houses, industrial premises, market and school etc. in the roof that is mounted photovoltaic module.
The voltage, particularly some photovoltaic modulies of photovoltaic module tens of volts of meeting generation under illumination condition are connected into a string voltage afterwards and can reach 1000V, and this brings serious threat to installation, maintenance and fire-fighting work of photovoltaic plant; Generally take at present to strengthen to install, maintenance and fire extinguishing personnel's insulating protection level carrys out passive reply, weak point is can not by dangerous matter sources, be initiatively that high voltage after photovoltaic module series connection reduces to lsafety level.
The direct current component of photovoltaic system, the bad or cable of conductor contact is aging to be caused sustained arc (direct-current arc cannot as alternating current arc zero-crossing switching) and forms fire.Common way is that detector for fire alarm system part is installed on roof, if breaking out of fire causes fire alarm, then sprays fire extinguisher and waits fire-fighting equipment to put out a fire.This way is a kind of passive security measure, and its weak point is: generation that can not active monitoring electric arc also takes measures to eliminate in time.
Summary of the invention
For the problems referred to above, the object of this invention is to provide a kind of photovoltaic active safety system, it can be when installation, maintenance, fault and fire alarm, photovoltaic system is switched to safe condition, also can monitor in time direct-current arc fault and eliminate, thereby reduce the investment risk of photovoltaic system, reduce the infringement of photovoltaic to the person of place building and property.
For achieving the above object, the present invention takes following technical scheme: on existing photovoltaic system, configure a set of photovoltaic active safety system, this photovoltaic active safety system comprises: several security modules, described security module comprises a controller and a gate-controlled switch circuit, described gate-controlled switch circuit is connected with at least one photovoltaic module by input terminal, described gate-controlled switch circuit accesses header box or inverter after connecting with the lead-out terminal of other security modules by lead-out terminal, the power supply of described controller is provided by accessed photovoltaic module, described controller comprises a communication interface, described gate-controlled switch circuit is controlled in energy output state or safe condition by described controller, several communication management module, described communication management module comprises communication interface and human-computer interaction device, the power supply of described communication management module is provided by photovoltaic generating system AC, the security module that described communication interface accesses with communication management module is communicated by letter, and described human-computer interaction device is for showing the information that security module is uploaded and receiving outside operational order, communication normal condition under, described security module according to the instruction works of communication management module at energy output state or safe condition, when the communication management module communication abnormality of security module and access, security module enters safe condition automatically.
Preferably, this photovoltaic active safety system also comprises: a set of monitoring module, described monitoring module comprises communication interface, data storage device, data processing equipment and man-machine interface etc., described communication interface is communicated by letter with all communication management module, the information that described data storage device is uploaded for storage security module and communication management module, the analysis of described data processing equipment for security module and communication management module are uploaded to information, described man-machine interface is for showing the analysis conclusion of information that security module and communication management module are uploaded and data processing equipment and receiving outside operational order.
When photovoltaic module is installed, communication close administration module is communicated by letter with security module, and security module enters safe condition automatically, just makes security module series connection voltage afterwards be no more than safe voltage; When photovoltaic system is in maintenance, during fault, by monitoring module man-machine interface or communication management module human-computer interaction device, send instruction, can make relevant security module enter safe condition; When photovoltaic system generation fire alarm or other emergency, except sending instruction by monitoring module or communication management module, make associated safety module enter safe condition, can also cut off photovoltaic system AC power supply and make communication management module dead electricity, security module automatically enter safe condition.
Preferably, described monitoring module is communicated by letter with corresponding communication management module by internet.
Preferably, an included gate-controlled switch circuit of security module is DC/DC voltage-regulating circuit.
Preferably, an included gate-controlled switch circuit of security module is controlled normal open switch.
Preferably, an included gate-controlled switch circuit of security module is controlled two position changeover switch.
Preferably, security module comprises a temperature sensor, when the controller in security module surpasses limit value by described temperature sensor monitors to temperature, this security module is switched to safe condition.
Preferably, security module comprises a voltage sensor, and the controller in security module is gathered the output voltage information of corresponding light photovoltaic assembly and uploaded by described voltage sensor.
Preferably, security module comprises a current sensor, and the controller in security module is gathered the output current information of corresponding light photovoltaic assembly and uploaded by described current sensor.
Preferably, header box or the inner integrated DC electric arc detecting device of inverter at photovoltaic system, described direct-current arc detection arrangement monitors when there is arc fault in photovoltaic system, is controlled corresponding security module by communication management module or monitoring module and is switched to safe condition.
Preferably, security module is integrated in photovoltaic component terminal box or as independent device.
Preferably, between security module and communication management module, adopt power line carrier communication or communication.
Preferably, security module is communicated by letter with communication management module by communication gate.
The present invention is owing to taking above technical scheme, and it has the following advantages:
(1) when photovoltaic system installation, maintenance, fault and fire alarm, photovoltaic system can be switched to the safe condition of the tens of volts of voltage from the high-voltage state up to 1000V, thereby reduce the shock hazard of photovoltaic system to installation, maintenance and fireman, guarantee installation, maintenance and fire-fighting work are carried out smoothly;
(2) find in time the arc fault hidden danger of photovoltaic generation, and hidden danger can be eliminated, thereby reduce the harm to the person and property in photovoltaic system and building;
(3) by the information such as temperature, voltage, electric current of monitoring photovoltaic module, find in time the abnormality of photovoltaic module, to take appropriate measures, thereby improve the energy output of system.
Accompanying drawing explanation
Fig. 1 is the connection diagram of security module of the present invention and photovoltaic system.
Fig. 2 is communication construction schematic diagram of the present invention.
Fig. 3 (a), Fig. 3 (b), Fig. 3 (c) are the schematic diagrames of security module.
Fig. 4 is the schematic diagram that a plurality of photovoltaic modulies connect a security module.
Fig. 5 is the schematic diagram that security module is connected with communication management module by gateway.
101. photovoltaic modulies in figure, 102. security modules, 103. photovoltaic group strings, 104. header boxs or inverter, 105. communication management module, 106. monitoring modules, 201.DC/DC voltage-regulating circuit, 202. controlled normal open switch, 203. controlled two position changeover switch, 204. controllers, 301. direct-current arc checkout gears, 501. communication gates.
Embodiment
Below in conjunction with drawings and Examples, to of the present invention, be described in detail.
In Fig. 1, each photovoltaic module (101) accesses corresponding security module (102), and each security module (102) series connection is photovoltaic group string (103); Several photovoltaic group string (103) access header box or inverters (104).
In Fig. 3 (a), security module (102) comprises the gate-controlled switch circuit that a controller (204) and a DC/DC voltage-regulating circuit (201) form; Security module (102) provides power supply by accessed photovoltaic module; Under energy output state, DC/DC voltage-regulating circuit (201) is followed the tracks of the maximum power point of institute's connected components, and energy is exported; Under safe condition, DC/DC voltage-regulating circuit (201) is controlled at output that voltage is not more than 1.1V, power is not more than 1W; Described control (204) comprises a communication interface.
In Fig. 3 (b), security module (102) comprises the gate-controlled switch circuit that a controller (204) and a normal open switch (202) form; Security module (102) provides power supply by accessed photovoltaic module; When normal open switch (202) disconnects, security module (102) is in energy output state; When normal open switch (202) is closed, security module (102) is in a safe condition, and the output of security module (102) is controlled at that voltage is not more than 1.1V, power is not more than 1W; Described control (204) comprises a communication interface.
In Fig. 3 (c), security module (102) comprises the gate-controlled switch circuit that a controller (204) and controlled two position changeover switch (203) form; Security module (102) provides power supply by accessed photovoltaic module; When the moving node of change over switch (203) is positioned at node 1, security module (102) is in energy output state; When the moving node of change over switch (203) is positioned at node 2, security module (102) is in a safe condition, and the output of security module (102) is controlled at that voltage is not more than 1.1V, power is not more than 1W; Under power failure state, the moving node of controlled two position switchs is positioned at node 2; Described control (204) comprises a communication interface.
In Fig. 2, security module (102) is carried out two-way communication by the mode of power line carrier communication or radio communication with corresponding communication management module (105); The information of uploading of the security module (102) that communication management module (105) accesses is also sent corresponding instruction to accessed security module (102); Communication management module (105) is powered by photovoltaic system AC.
In Fig. 2, preferably, all communication management module (105) are carried out two-way communication by wired or wireless mode and monitoring module (106), upload information or receive instruction; Preferably, monitoring module (106) can be arranged in a distant place, and all communication management module (105) are connected with monitoring module (106) by internet.
When photovoltaic module is installed, communicating by letter between communication close administration module (105) and security module (102), security module (102) is controlled in a safe condition, within the voltage of photovoltaic group string (103) remains on safe voltage, thereby initiatively by the dangerous elimination of high voltage.
When photovoltaic system maintenance or fault, operations staff makes relevant security module (102) in a safe condition to corresponding security module (102) transmission instruction by the man-machine interface of monitoring module (106) or the human-computer interaction device of communication management module (105), and corresponding photovoltaic DC part and header box or inverter (104) are disconnected, the high voltage danger of this part photovoltaic DC system is initiatively eliminated.
When fire alarm or other emergencies, except sending instruction to corresponding security module (102) by monitoring module (106) or communication management module (105), make security module (102) in a safe condition, can also be by the AC power-off of photovoltaic system, thereby make communication management module (105) lose power supply, corresponding security module (102) enters safe condition automatically.
In Fig. 1, header box or inverter (104) are integrated with direct-current arc checkout gear (301); When direct-current arc checkout gear (301) detects arc fault, first header box is exported to circuit breaker or inverter direct-flow side and disconnected, then by communication management module (105), relevant security module (102) is closed, thereby by arc cutting.
Preferably, security module (102) comprises a temperature sensor, when the controller in security module surpasses limit value by described temperature sensor monitors to temperature, this security module is switched to safe condition.
Preferably, security module (102) comprises a voltage sensor, and the controller in security module is gathered the output voltage information of corresponding light photovoltaic assembly and uploaded by described voltage sensor.
Preferably, security module (102) comprises a current sensor, and the controller in security module is gathered the output current information of corresponding light photovoltaic assembly and uploaded by described current sensor.
Monitoring module, according to the operating state of the information analysis photovoltaic module of uploading, is reported to the police to the abnormality of photovoltaic module.
Fig. 4 is that above-mentioned case configures the modification of quantity in security module, with above-mentioned case 1 difference is, after some block assemblies series connection, configures a security module.
Fig. 5 is the modification of above-mentioned case in communication network configuration, is that security module is communicated by letter with communication management module (105) by communication gate (501) with above-mentioned case 1 difference.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (13)
1. a photovoltaic active safety system, is characterized in that, it comprises:
Several security modules, described security module comprises a controller and a gate-controlled switch circuit, described gate-controlled switch circuit is connected with at least one photovoltaic module by input terminal, described gate-controlled switch circuit accesses header box or inverter after connecting with the lead-out terminal of other security modules by lead-out terminal, the power supply of described controller is provided by accessed photovoltaic module, described controller comprises a communication interface, and described gate-controlled switch circuit is controlled in energy output state or safe condition by described controller;
Several communication management module, described communication management module comprises communication interface and human-computer interaction device, the power supply of described communication management module is provided by photovoltaic generating system AC, the security module that described communication interface accesses with communication management module is communicated by letter, and described human-computer interaction device is for showing the information that security module is uploaded and receiving outside operational order; Communication normal condition under, described security module according to the instruction works of communication management module at energy output state or safe condition; When the communication management module communication abnormality of security module and access, security module enters safe condition automatically.
2. a kind of photovoltaic active safety system according to claim 1, it is characterized in that, it comprises: a set of monitoring module, described monitoring module comprises communication interface, data storage device, data processing equipment and man-machine interface etc., described communication interface is communicated by letter with all communication management module, the information that described data storage device is uploaded for storage security module and communication management module, the analysis of described data processing equipment for security module and communication management module are uploaded to information, described man-machine interface is for showing the analysis conclusion of information that security module and communication management module are uploaded and data processing equipment and receiving outside operational order.
3. a kind of photovoltaic active safety system according to claim 2, is characterized in that: described monitoring module is communicated by letter with all communication management module by internet.
4. a kind of photovoltaic active safety system according to claim 1 and 2, is characterized in that: an included gate-controlled switch circuit of security module is DC/DC voltage-regulating circuit.
5. a kind of photovoltaic active safety system according to claim 1 and 2, is characterized in that: an included gate-controlled switch circuit of security module is controlled normal open switch.
6. a kind of photovoltaic active safety system according to claim 1 and 2, is characterized in that: an included gate-controlled switch circuit of security module is controlled two position changeover switch.
7. a kind of photovoltaic active safety system according to claim 1 and 2, it is characterized in that: security module comprises a temperature sensor, when the controller in security module surpasses limit value by described temperature sensor monitors to temperature, this security module is switched to safe condition.
8. a kind of photovoltaic active safety system according to claim 1 and 2, is characterized in that: security module comprises a voltage sensor, and the controller in security module is gathered the output voltage information of corresponding light photovoltaic assembly and uploaded by described voltage sensor.
9. a kind of photovoltaic active safety system according to claim 1 and 2, is characterized in that: security module comprises a current sensor, and the controller in security module is gathered the output current information of corresponding light photovoltaic assembly and uploaded by described current sensor.
10. a kind of photovoltaic active safety system according to claim 1 and 2, it is characterized in that: at header box or the inner integrated DC electric arc detecting device of inverter of photovoltaic system, described direct-current arc detection arrangement monitors when there is arc fault in photovoltaic system, is controlled corresponding security module by communication management module or monitoring module and is switched to safe condition.
11. a kind of photovoltaic active safety systems according to claim 1 and 2, is characterized in that: security module is integrated in photovoltaic component terminal box or as independent device.
12. a kind of photovoltaic active safety systems according to claim 1 and 2, is characterized in that: between security module and communication management module, adopt power line carrier communication or communication.
13. a kind of photovoltaic active safety systems according to claim 1 and 2, is characterized in that: security module is communicated by letter with communication management module by communication gate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410365423.3A CN104143958A (en) | 2014-07-29 | 2014-07-29 | Photovoltaic active safety system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410365423.3A CN104143958A (en) | 2014-07-29 | 2014-07-29 | Photovoltaic active safety system |
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| CN104143958A true CN104143958A (en) | 2014-11-12 |
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| CN201410365423.3A Pending CN104143958A (en) | 2014-07-29 | 2014-07-29 | Photovoltaic active safety system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104578297A (en) * | 2015-01-08 | 2015-04-29 | 漳州科华技术有限责任公司 | Modular photovoltaic charger dormancy control device and method |
| CN108323219A (en) * | 2017-03-22 | 2018-07-24 | 胡炎申 | The control method of photovoltaic generating system and MPPT maximum power point tracking MPPT |
| CN110101992A (en) * | 2019-01-17 | 2019-08-09 | 上海电机学院 | A kind of electric fire-control linked system based on photovoltaic building |
| CN112787912A (en) * | 2021-01-18 | 2021-05-11 | 上海瑟度能源科技有限公司 | Communication gateway for photovoltaic power generation system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104578297A (en) * | 2015-01-08 | 2015-04-29 | 漳州科华技术有限责任公司 | Modular photovoltaic charger dormancy control device and method |
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