CN103701093A - Photovoltaic fire-proof circuit breaker and photovoltaic circuit breaking method - Google Patents
Photovoltaic fire-proof circuit breaker and photovoltaic circuit breaking method Download PDFInfo
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- CN103701093A CN103701093A CN201210379468.7A CN201210379468A CN103701093A CN 103701093 A CN103701093 A CN 103701093A CN 201210379468 A CN201210379468 A CN 201210379468A CN 103701093 A CN103701093 A CN 103701093A
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- photovoltaic
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- relay
- circuit breaker
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Abstract
The invention discloses a photovoltaic circuit breaking method and a photovoltaic circuit breaker. The photovoltaic circuit breaker comprises a main controller (1), a power supply (2), a relay (3), a PC (4) and a console (5), wherein the power supply (2) and the relay (3) are electrically connected with the main controller (1); and the PC (4) and the console (5) are connected with the main controller (1) through a first communication bus (14) and a second communication bus (15) respectively. The photovoltaic circuit breaking method and the photovoltaic circuit breaker have the advantages as follows: a photovoltaic array can be controlled in a centralized way; in case of an accident, power generation of the photovoltaic array can be quickly and timely stopped.
Description
Technical field
The present invention relates to photovoltaic apparatus, relate in particular to a kind of photovoltaic fireproof breaker.
Background technology
Trend and Policy orientation by government along with theCourse of PV Industry, BIPV is regarded as one of effective way of saving domestic photovoltaic industry, corresponding building energy conservation target is also listed among 12 plans by country, and BIPV is just entering the high speed development stage.Yet, promote energetically energy-conservation combine with building in, the fire prevention of photovoltaic system is problem hidden in industry and that do not talk always.Different from the photovoltaic plant of building, when photovoltaic product is applied in building widely, the people's life and property safety and fire fighter's safety will be a problem can not be ignored.The fire monitoring that the fire-proof product of BIPV project that this project proposes and the research of the system integration mainly focus on photovoltaic plant DC side, the dump mode of prevention and DC side, the research and development of these products and integratedly have an innovative significance, the application on photovoltaic system also belongs to first.
In recent years, also more and more for the research of photovoltaic fireproof, the photovoltaic fire-fighting laboratory report that for example provide in about in June, 2011 in UL laboratory, the importance of more having given prominence to this research.More media comments appears at various websites and space in a newspaper.Yet the domestic and international fire-fighting for photovoltaic does not at present have reliable product.So, before new product release, before photovoltaic building fire occurs and draws attention, for the research and development of this system, will there is initiative meaning.
Photovoltaic and architecture-integral, that is: " BIPV ", is one of important method of solar energy power generating, it mainly generates electricity by way of merging two or more grid systems.In order making peace with line voltage one, to improve system effectiveness, to reduce manufacturing cost, by polylith electric pressure, be normally 24 or the solar module series connection of 36V, therefore the voltage ratio of photovoltaic DC system is higher, and work can reach about 600 volts, if more than open circuit voltage may reach 800V.After combining closely with building, can produce many safety problems:
1) security against fire has no idea to solve.After building breaking out of fire, because building has the electrified body of 600V, as long as this electrified body has illumination just to exist simultaneously, cause fire brigade to sue and labour.
2) if solar module leaks electricity, may cause building charged, cause personal voltage meeting accident, even earth leakage protective device action, photovoltaic arrays is still charged, cannot sue and labour to electric shock person.
3) current technology is when finding solar module generation leak current fault, automatically disconnect the direct current input of inverter, but at this time photovoltaic arrays voltage can raise suddenly, can cause larger accident.
Summary of the invention
The technical problem to be solved in the present invention is the above-mentioned defect for prior art, provides a kind of and can cut off in time photovoltaic breaking method circuit, assurance building safety, and a kind of photovoltaic fireproof breaker is further provided.
The present invention for solving the adoptable technical scheme of its technical problem is: a kind of photovoltaic breaking method, it is characterized in that, and described method comprises the steps:
The operating state of S1, monitoring photovoltaic array;
S2, when finding dangerous situation, by control desk or PC end, send control command;
S3, by communication bus, send control command to master controller;
S4, master controller output order open or close relay, thereby make photovoltaic array cracking or recovery.
According to photovoltaic breaking method of the present invention aspect, described communication bus is RS485 bus.
According to photovoltaic breaking method of the present invention aspect, when described relay is during in opening, described photovoltaic array cracking; When described relay is during in closed condition, described photovoltaic array is resumed work.
Further, the present invention solves the adoptable technical scheme of its technical problem and is: a kind of photovoltaic circuit breaker, and described photovoltaic circuit breaker comprises master controller, power supply, relay, PC end and control desk; Described power supply is electrically connected to described master controller, is described master controller power supply; Described master controller and described relay are connected and control the operating state of this relay; Described PC end is connected with described master controller by the first communication bus; Described control desk is connected with described master controller by second communication bus.
According to photovoltaic circuit breaker of the present invention aspect, described master controller is STM8S207S6T6C.
According to photovoltaic circuit breaker of the present invention aspect: described the first communication bus and second communication bus are RS485 bus.
According to photovoltaic circuit breaker of the present invention aspect, described power supply is storage battery.
Photovoltaic breaking method of the present invention and photovoltaic circuit breaker can intensively, remotely be controlled photovoltaic module.When building breaking out of fire or photovoltaic module generation electric leakage, in photovoltaic arrays, the photovoltaic module of each series connection can be cracked into rapidly the monomer photovoltaic module of low-voltage, and by the short circuit of monomer photovoltaic module, making square formation stop generating, the accident for the treatment of is replied normal later.Under normal circumstances, electric current process be the normal-closed end of relay, power consumption is little, little on the generating efficiency impact of photovoltaic system.
Will be appreciated that, the feature in the above each side of the present invention is independent assortment within the scope of the invention, and is not subject to the restriction of its order---as long as the technical scheme after combination drops in connotation of the present invention.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, photovoltaic breaking method of the present invention and photovoltaic circuit breaker are described further, in accompanying drawing:
Fig. 1 is the logical construction block diagram of photovoltaic circuit breaker of the present invention;
Fig. 2 is the flow chart of photovoltaic breaking method of the present invention;
Fig. 3 be the relay of photovoltaic circuit breaker of the present invention when closed condition, the state diagram of photovoltaic array;
Fig. 4 be the relay of photovoltaic circuit breaker of the present invention when opening, the state diagram of photovoltaic array.
Embodiment
Below in connection with the preferred embodiments of the present invention, technical scheme of the present invention is elaborated.Need to understand, following description (comprising accompanying drawing) is only exemplary, but not limitation of the present invention is described.Can relate in the following description the concrete quantity of parts, yet also it is to be understood that, these quantity are only also exemplary, and those skilled in the art can choose arbitrarily with reference to the present invention the parts of right quantity.And, if the wording such as mentioned " first ", " second " in the present invention not represents the sequence to parts importance, is only used as to distinguish name of parts and is referred to as.
As shown in Figure 1, the invention discloses a kind of photovoltaic circuit breaker.This photovoltaic circuit breaker comprises following logical block: master controller 1, power supply 2, relay 3, PC(personal computer) end 4 and control desk 5.Power supply 2 is connected with master controller 1 with relay 3, and PC end 4 is connected with master controller 1 by the first communication bus 14, second communication bus 15 respectively with control desk 5.Master controller 1 can adopt STM8S207S6T6C processor, its data processing rate is that 20MIPS, RAM are 2k, and Flash memory is 32k, I/O path numerical digit 34 tunnels, this master controller 1 is for receiving the control signal of PC end 4 or control desk 5, and wherethrough is managed the break-make of rear control relay 3.Power supply 2 can adopt the storage battery of 24V, and the operating voltage of relay 3 is by direct battery power, and the operating voltage of master controller 1 and the first second communication bus obtains after by LM2576 step-down.Relay 3 is for the break-make between centralized control photovoltaic array series component, and the output of confluxing.The normal-closed end of relay 3 is connected between the above-mentioned series component of photovoltaic, and Chang Kaiduan is connected in parallel on photovoltaic module two ends, during relay work, can realize the cracking of photovoltaic array and the short circuit of photovoltaic module simultaneously.
Communication protocol between master controller 1 and PC end 4, control desk 5 adopts Modbus-RTU.
With reference to figure 2, the invention discloses a kind of photovoltaic breaking method.The method comprises the steps:
The operating state of S1, monitoring photovoltaic array;
S2, when finding dangerous situation, by control desk or PC end, send control command;
S3, by communication bus, send control command to master controller;
S4, master controller output order open or close relay, thereby make photovoltaic array cracking or recovery.
Wherein, when relay is during in opening, photovoltaic array cracking, thus reduce rapidly voltage, make it to stop generating.When relay is during in closure state, photovoltaic array recovers normal operating state.
In the method, communication protocol adopts Modbus-RTU, and communication line adopts RS485 bus.
In conjunction with Fig. 1-4 explanation operation principle of the present invention.When breaking out of fire is dangerous, can transmit control signal at control desk or PC end, by the telecommunication of Modbus, control signal is sent in master controller, after master controller analyzing and processing, signal is sent to the drive end of relay, relay conducting work, Chang Kaiduan closes, normal-closed end is opened, thereby makes to open a way between each photovoltaic module, simultaneously each photovoltaic module self short circuit, reach the object that stops photovoltaic arrays generating, as shown in Figure 4.
After dangerous situation is removed, then send ring off signal by control desk or PC end, the same with said process, last cut-off, makes photovoltaic arrays recover generating, as shown in Figure 3.Therefore, this photovoltaic circuit breaker can centralized control photovoltaic module, when building breaking out of fire or photovoltaic module generation electric leakage, the photovoltaic module of each series connection in photovoltaic array can be cracked into rapidly the monomer photovoltaic module of low-voltage, and by the short circuit of monomer photovoltaic module, make square formation stop generating, the accident for the treatment of is replied normal later.Under normal circumstances, electric current process be the normal-closed end of relay, power consumption is little, little on the generating efficiency impact of photovoltaic system.
Claims (7)
1. a photovoltaic breaking method, is characterized in that, described method comprises the steps:
The operating state of S1, monitoring photovoltaic array;
S2, when finding dangerous situation, by control desk or PC end, send control command;
S3, by communication bus, send control command to master controller;
S4, master controller output order open or close relay, thereby make photovoltaic array cracking or recovery.
2. photovoltaic breaking method according to claim 1, is characterized in that: described communication bus is RS485 bus.
3. photovoltaic breaking method according to claim 1, is characterized in that: when described relay is during in opening, and described photovoltaic array cracking; When described relay is during in closed condition, described photovoltaic array is resumed work.
4. a photovoltaic circuit breaker, is characterized in that: described photovoltaic circuit breaker comprises that master controller (1), power supply (2), relay (3), PC hold (4) and control desk (5); Described power supply (2) is electrically connected to described master controller (1), is described master controller (1) power supply; Described master controller (1) and described relay (3) are connected and control the operating state of this relay; Described PC end (4) is connected with described master controller (1) by the first communication bus (14); Described control desk (5) is connected with described master controller (1) by second communication bus (15).
5. photovoltaic circuit breaker according to claim 4, is characterized in that: described master controller (1) is STM8S207S6T6C.
6. photovoltaic circuit breaker according to claim 4, is characterized in that: described the first communication bus (14) and second communication bus (15) are RS485 bus.
7. photovoltaic circuit breaker according to claim 4, is characterized in that: described power supply is storage battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210379468.7A CN103701093A (en) | 2012-10-09 | 2012-10-09 | Photovoltaic fire-proof circuit breaker and photovoltaic circuit breaking method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210379468.7A CN103701093A (en) | 2012-10-09 | 2012-10-09 | Photovoltaic fire-proof circuit breaker and photovoltaic circuit breaking method |
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| CN103701093A true CN103701093A (en) | 2014-04-02 |
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| CN201210379468.7A Pending CN103701093A (en) | 2012-10-09 | 2012-10-09 | Photovoltaic fire-proof circuit breaker and photovoltaic circuit breaking method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767478A (en) * | 2015-03-18 | 2015-07-08 | 江苏九鼎光伏系统有限公司 | Photovoltaic system disaster control method and safe wiring box |
| CN105185856A (en) * | 2015-06-29 | 2015-12-23 | 北京天诚同创电气有限公司 | Automatic battery board splitting device and battery board series array |
| CN110416970A (en) * | 2018-04-28 | 2019-11-05 | 北京汉能光伏投资有限公司 | Control the method, apparatus and curtain wall system of solar components power on/off |
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| JPH05343722A (en) * | 1992-06-05 | 1993-12-24 | Sharp Corp | Short-circuit detector for solar battery |
| EP0591620A1 (en) * | 1992-06-26 | 1994-04-13 | Canon Kabushiki Kaisha | Battery power supply system |
| CN101951190A (en) * | 2010-09-08 | 2011-01-19 | 陈文良 | Photovoltaic module capable of being electrically isolated and electrical isolation method thereof |
| CN202102997U (en) * | 2011-05-20 | 2012-01-04 | 中环光伏系统有限公司 | Intelligent circuit breaker for solar cell module string |
-
2012
- 2012-10-09 CN CN201210379468.7A patent/CN103701093A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05343722A (en) * | 1992-06-05 | 1993-12-24 | Sharp Corp | Short-circuit detector for solar battery |
| EP0591620A1 (en) * | 1992-06-26 | 1994-04-13 | Canon Kabushiki Kaisha | Battery power supply system |
| CN101951190A (en) * | 2010-09-08 | 2011-01-19 | 陈文良 | Photovoltaic module capable of being electrically isolated and electrical isolation method thereof |
| CN202102997U (en) * | 2011-05-20 | 2012-01-04 | 中环光伏系统有限公司 | Intelligent circuit breaker for solar cell module string |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767478A (en) * | 2015-03-18 | 2015-07-08 | 江苏九鼎光伏系统有限公司 | Photovoltaic system disaster control method and safe wiring box |
| CN105185856A (en) * | 2015-06-29 | 2015-12-23 | 北京天诚同创电气有限公司 | Automatic battery board splitting device and battery board series array |
| CN105185856B (en) * | 2015-06-29 | 2017-06-09 | 北京天诚同创电气有限公司 | Automatic battery board splitting device and battery board series array |
| CN110416970A (en) * | 2018-04-28 | 2019-11-05 | 北京汉能光伏投资有限公司 | Control the method, apparatus and curtain wall system of solar components power on/off |
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Application publication date: 20140402 |
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