CN203416215U - Photovoltaic assembly power distribution protection system - Google Patents
Photovoltaic assembly power distribution protection system Download PDFInfo
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- CN203416215U CN203416215U CN201320571575.XU CN201320571575U CN203416215U CN 203416215 U CN203416215 U CN 203416215U CN 201320571575 U CN201320571575 U CN 201320571575U CN 203416215 U CN203416215 U CN 203416215U
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- photovoltaic module
- photovoltaic
- inverter
- header box
- string
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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 utility model discloses a photovoltaic assembly power distribution protection system which is applied to a photovoltaic system. The photovoltaic system comprises photovoltaic assemblies, a photovoltaic assembly string and an inverter, wherein the photovoltaic assembly string is formed by the photovoltaic assemblies in serial connection, and the inverter is serially connected with the photovoltaic assemblies; the photovoltaic assembly power distribution protection system comprises a measure-control management module, wherein the measure-control management module is connected with each photovoltaic assembly and used for obtaining a first detection parameter of each photovoltaic assembly in real time and judging whether the first detection parameter meets a first standard parameter, if the first detection parameter cannot meet the first standard parameter, a first control signal is generated, and the photovoltaic assembly string in which the failed photovoltaic assembly stays is controlled to be disconnected with the inverter. By adopting the photovoltaic assembly power distribution protection system, fault detection can be automatically carried out on the photovoltaic assembly which is connected with the inverter, the photovoltaic assembly string in which the photovoltaic assembly having the fault can be controlled to be separated from the inverter, so that the photovoltaic assembly strings working normally are not influenced, and the power generation loss of the photovoltaic system can be reduced.
Description
Technical field
The utility model belongs to photovoltaic system technical field, more particularly, relates to a kind of photovoltaic module power distribution protection system.
Background technology
In the application of photovoltaic system, because voltage, the power ratio of single photovoltaic module are lower, therefore after often needing first a plurality of photovoltaic module series connection to be photovoltaic module string, again by photovoltaic module connection in series-parallel, then photovoltaic module in parallel is connected in series into photovoltaic DC-to-AC converter, finally by inverter output AC electricity.By conventional 500kW inverter, calculate, every inverter need to access 112 strings to 128 optical crosstalk volt group strings, component count up to 2464 to 2818.The electric component of so large quantity is exposed in natural environment and is difficult to ensure in the long-term cycle of operation and does not go wrong; at present; when certain part of photovoltaic system breaks down, whole photovoltaic system need to be shut down and overhauled, therefore easily cause energy output loss.
Utility model content
In view of this; the utility model provides a kind of photovoltaic module power distribution protection system; can carry out automatic fault detect to the photovoltaic module of access inverter; can be by the photovoltaic module string at the photovoltaic module place of breaking down and inverter isolation; and do not affect the photovoltaic module string of other normal operations, thereby can reduce the energy output loss of photovoltaic system.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A power distribution protection system, is applied to photovoltaic system, and described photovoltaic system comprises:
Photovoltaic module, the photovoltaic module string being composed in series by described photovoltaic module and the inverter connecing with described photovoltaic module series winding;
Described photovoltaic module power distribution protection system comprises:
Be connected with described each photovoltaic module, the first detected parameters of each photovoltaic module of Real-time Obtaining, and judge whether described the first detected parameters meets the first canonical parameter, if do not meet, generate the first control signal, control the photovoltaic module string at described photovoltaic module place and the TT&C Management module that described inverter disconnects.
Preferably, described TT&C Management module integration is in described inverter.
Preferably, the first detected parameters of described each photovoltaic module comprises: voltage, electric current and temperature.
Preferably, described photovoltaic module power distribution protection system also comprises: the header box being connected with described inverter;
Described each photovoltaic module string being composed in series by photovoltaic module is connected with described header box respectively;
Described TT&C Management module also connects by described header box and described each photovoltaic module series winding, the second detected parameters of each photovoltaic module string of Real-time Obtaining, and judge whether described the second detected parameters meets the second canonical parameter, if do not meet, generate the second control signal, control described photovoltaic module string and described header box and disconnect.
Preferably, described TT&C Management module integration is in described header box.
Preferably, the second detected parameters of described each photovoltaic module string comprises: voltage, electric current, power and energy output.
Preferably, described photovoltaic module power distribution protection system also comprises: the Direct Current Distribution Unit being connected with described inverter;
Described each header box is connected with described Direct Current Distribution Unit respectively;
Described TT&C Management module is also connected with described each header box by described Direct Current Distribution Unit, the 3rd detected parameters of each header box of Real-time Obtaining, and judge whether described the 3rd detected parameters meets the 3rd canonical parameter, if do not meet, generate the 3rd control signal, control described header box and described Direct Current Distribution Unit disconnects.
Preferably, described TT&C Management module integration is in described Direct Current Distribution Unit.
Preferably, the 3rd detected parameters of described each header box is: voltage, electric current, power and energy output.
From above-mentioned technical scheme, can find out; the disclosed a kind of photovoltaic module power distribution protection system of the utility model; by real-time the first detected parameters of obtaining each photovoltaic module of TT&C Management module; and judge whether the first detected parameters meets the first canonical parameter; if do not meet and generate the first control signal; photovoltaic module string and the inverter of controlling fault photovoltaic module place disconnect, and the photovoltaic module string that other do not break down can normally be connected with inverter.Therefore; realized while having photovoltaic module to break down in photovoltaic system; without whole photovoltaic system is shut down to maintenance, only the photovoltaic module string at the photovoltaic module place of breaking down and inverter need be disconnected, and then reduce the loss of photovoltaic system energy output.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the disclosed a kind of photovoltaic module power distribution protection system of the utility model;
Fig. 2 is the structural representation of the disclosed another kind of photovoltaic module power distribution protection system of the utility model;
Fig. 3 is the structural representation of the disclosed another kind of photovoltaic module power distribution protection system of the utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only a part of embodiment of the present utility model, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
The utility model embodiment discloses a kind of photovoltaic module power distribution protection system; can carry out automatic fault detect to the photovoltaic module of access inverter; can be by the photovoltaic module string at the photovoltaic module place of breaking down and inverter isolation; and do not affect the photovoltaic module string of other normal operations, thereby can reduce the energy output loss of photovoltaic system.
As shown in Figure 1, a kind of photovoltaic module power distribution protection system, is applied to photovoltaic system, and photovoltaic system comprises:
Photovoltaic module, the photovoltaic module string being composed in series by photovoltaic module and the inverter connecing with photovoltaic module series winding;
Photovoltaic module power distribution protection system comprises: TT&C Management module;
TT&C Management module is connected with each photovoltaic module, the first detected parameters for each photovoltaic module of Real-time Obtaining, and judge whether the first detected parameters meets the first canonical parameter, if do not meet, generate the first control signal, photovoltaic module string and the inverter of controlling fault photovoltaic module place disconnect.
Concrete, the first detected parameters of above-mentioned each photovoltaic module comprises: voltage, electric current and temperature.
The operation principle of above-described embodiment is: when photovoltaic system is in running order, the voltage of TT&C Management module to each photovoltaic module, electric current, the parameters such as temperature detect, and the voltage that detects of judgement, electric current, whether the parameters such as temperature meet the normal voltage of the photovoltaic module of pre-stored in TT&C Management module, electric current, the parameters such as temperature, if do not meet, TT&C Management module generates the first control signal, photovoltaic module string and the inverter at the photovoltaic module place that control is broken down disconnect, and the photovoltaic module string at the photovoltaic module place that other do not break down still keeps being connected with inverter, work on.Therefore; the disclosed photovoltaic module power distribution protection of the present embodiment system; realized when having photovoltaic module to break down; without whole photovoltaic system is shut down to maintenance; only need will there is the photovoltaic module string of fault photovoltaic module to quit work; and other normal photovoltaic module string still can continue normal operation, thereby reduced the loss of photovoltaic system energy output.
In above-described embodiment, disclosed TT&C Management module can also be integrated in inverter, and its operation principle is same as the previously described embodiments, does not repeat them here.
As shown in Figure 2, for the utility model disclosed another kind of photovoltaic module power distribution protection system on the basis of above-described embodiment, comprising: TT&C Management module and header box; Wherein:
Each photovoltaic module string being composed in series by photovoltaic module is connected with header box;
Header box is connected with inverter;
TT&C Management module is connected with each photovoltaic module, also by header box and each photovoltaic module series winding, connects;
TT&C Management module detects the second detected parameters of the first detected parameters of each photovoltaic module and each photovoltaic module string respectively.
Concrete, the first detected parameters of above-mentioned each photovoltaic module comprises: voltage, electric current and temperature.
Concrete, the second detected parameters of above-mentioned each photovoltaic module string comprises: voltage, electric current, power and energy output.
The operation principle of above-described embodiment is: when photovoltaic system is in running order, TT&C Management module is the voltage to each photovoltaic module in every optical crosstalk photovoltaic assembly string first, electric current, the parameters such as temperature detect, and the voltage that detects of judgement, electric current, whether the parameters such as temperature meet the first canonical parameter of the photovoltaic module of pre-stored in TT&C Management module, and normal voltage, electric current, the parameters such as temperature, if do not meet, TT&C Management module generates the first control signal, photovoltaic module string and the inverter at the photovoltaic module place that control is broken down disconnect, and the photovoltaic module string at the photovoltaic module place that other does not break down is still connected with inverter by header box, work on.
If the voltage of all photovoltaic modulies in a string photovoltaic module string, electric current, the parameters such as temperature all meet the first canonical parameter of the photovoltaic module of pre-stored in TT&C Management module, and normal voltage, electric current, during the parameters such as temperature, the voltage of TT&C Management module to this photovoltaic module string, electric current, the parameter such as power and energy output detects, and the voltage that detects of judgement, electric current, whether the parameter such as power and energy output meets the second canonical parameter of the photovoltaic module string of pre-stored in TT&C Management module, and normal voltage, electric current, the parameter such as power and energy output, if do not meet, TT&C Management module generates the second control signal, photovoltaic module string and header box that control is broken down disconnect, and the photovoltaic module string that other does not break down is still connected with inverter by header box, work on.
All the other photovoltaic modulies in header box and photovoltaic module string adopt same detection mode to detect.
Disclosed TT&C Management module can also be integrated in header box in the above-described embodiments, and its operation principle is same as the previously described embodiments, does not repeat them here.
As shown in Figure 3, for the utility model disclosed another kind of photovoltaic module power distribution protection system on the basis of above-described embodiment, comprising: TT&C Management module, header box and Direct Current Distribution Unit; Wherein:
Each photovoltaic module string being composed in series by photovoltaic module is connected with header box;
Each header box is connected with Direct Current Distribution Unit respectively;
Direct Current Distribution Unit is connected with inverter;
TT&C Management module is connected with each photovoltaic module, also by header box and each photovoltaic module series winding, connects, and also by Direct Current Distribution Unit, is connected with each header box;
TT&C Management module detects the 3rd detected parameters of the second detected parameters of the first detected parameters of each photovoltaic module, each photovoltaic module string, each header box respectively.
Concrete, the first detected parameters of above-mentioned each photovoltaic module comprises: voltage, electric current and temperature.
Concrete, the second detected parameters of above-mentioned each photovoltaic module string comprises: voltage, electric current, power and energy output.
Concrete, the 3rd detected parameters of above-mentioned each header box comprises: voltage, electric current, power and energy output.
Concrete, the operation principle of above-described embodiment is: when photovoltaic system is in running order, TT&C Management module is the voltage to each photovoltaic module in every optical crosstalk photovoltaic assembly string first, electric current, the parameters such as temperature detect, and the voltage that detects of judgement, electric current, whether the parameters such as temperature meet the first canonical parameter of the photovoltaic module of pre-stored in TT&C Management module, and normal voltage, electric current, the parameters such as temperature, if do not meet, TT&C Management module generates the first control signal, photovoltaic module string and the header box at the photovoltaic module place that control is broken down disconnect, and the photovoltaic module string at the photovoltaic module place that other does not break down is still connected with inverter with Direct Current Distribution Unit by header box, work on.
If the voltage of all photovoltaic modulies in a string photovoltaic module string, electric current, the parameters such as temperature all meet the first canonical parameter of the photovoltaic module of pre-stored in TT&C Management module, and normal voltage, electric current, during the parameters such as temperature, the voltage of TT&C Management module to this photovoltaic module string, electric current, the parameter such as power and energy output detects, and the voltage that detects of judgement, electric current, whether the parameter such as power and energy output meets the second canonical parameter of the photovoltaic module string of pre-stored in TT&C Management module, and normal voltage, electric current, the parameter such as power and energy output, if do not meet, TT&C Management module generates the second control signal, photovoltaic module string and header box that control is broken down disconnect, and the photovoltaic module string that other does not break down is still connected with inverter with Direct Current Distribution Unit by header box, work on.
All the other photovoltaic modulies in header box and photovoltaic module string adopt same detection mode to detect.
If the voltage of all photovoltaic module strings in a header box, electric current, the parameter such as power and energy output all meets in TT&C Management module the second canonical parameter with the photovoltaic module string of storage, and normal voltage, electric current, during the parameter such as power and energy output, the voltage of TT&C Management module to whole header box, electric current, power and energy output detect, and the voltage that detects of judgement, electric current, whether the parameter such as power and energy output meets the 3rd canonical parameter of the header box of pre-stored in TT&C Management module, and normal voltage, electric current, the parameter such as power and energy output, if do not meet, TT&C Management module generates the 3rd control signal, header box and Direct Current Distribution Unit that control is broken down disconnect, and the header box that other does not break down is still connected with inverter by Direct Current Distribution Unit, work on.
Remaining header box adopts same detection mode to detect.
In above-described embodiment, disclosed TT&C Management module can also be integrated in Direct Current Distribution Unit, and its operation principle is same as the previously described embodiments, does not repeat them here.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment identical similar part mutually referring to.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the utility model.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. a photovoltaic module power distribution protection system, is characterized in that, is applied to photovoltaic system, and described photovoltaic system comprises:
Photovoltaic module, the photovoltaic module string being composed in series by described photovoltaic module and the inverter connecing with described photovoltaic module series winding;
Described photovoltaic module power distribution protection system comprises:
Be connected with described each photovoltaic module, the first detected parameters of each photovoltaic module of Real-time Obtaining, and judge whether described the first detected parameters meets the first canonical parameter, if do not meet, generate the first control signal, control the photovoltaic module string at described photovoltaic module place and the TT&C Management module that described inverter disconnects.
2. system according to claim 1, is characterized in that, described TT&C Management module integration is in described inverter.
3. system according to claim 1 and 2, is characterized in that, the first detected parameters of described each photovoltaic module comprises: voltage, electric current and temperature.
4. system according to claim 1, is characterized in that, also comprises: the header box being connected with described inverter;
Described each photovoltaic module string being composed in series by photovoltaic module is connected with described header box respectively;
Described TT&C Management module also connects by described header box and described each photovoltaic module series winding, the second detected parameters of each photovoltaic module string of Real-time Obtaining, and judge whether described the second detected parameters meets the second canonical parameter, if do not meet, generate the second control signal, control described photovoltaic module string and described header box and disconnect.
5. system according to claim 4, is characterized in that, described TT&C Management module integration is in described header box.
6. according to the system described in claim 4 or 5, it is characterized in that, the second detected parameters of described each photovoltaic module string comprises: voltage, electric current, power and energy output.
7. system according to claim 4, is characterized in that, also comprises: the Direct Current Distribution Unit being connected with described inverter;
Described each header box is connected with described Direct Current Distribution Unit respectively;
Described TT&C Management module is also connected with described each header box by described Direct Current Distribution Unit, the 3rd detected parameters of each header box of Real-time Obtaining, and judge whether described the 3rd detected parameters meets the 3rd canonical parameter, if do not meet, generate the 3rd control signal, control described header box and described Direct Current Distribution Unit disconnects.
8. system according to claim 7, is characterized in that, described TT&C Management module integration is in described Direct Current Distribution Unit.
9. according to the system described in claim 7 or 8, it is characterized in that, the 3rd detected parameters of described each header box is: voltage, electric current, power and energy output.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320571575.XU CN203416215U (en) | 2013-09-13 | 2013-09-13 | Photovoltaic assembly power distribution protection system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320571575.XU CN203416215U (en) | 2013-09-13 | 2013-09-13 | Photovoltaic assembly power distribution protection system |
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| CN203416215U true CN203416215U (en) | 2014-01-29 |
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| CN201320571575.XU Expired - Lifetime CN203416215U (en) | 2013-09-13 | 2013-09-13 | Photovoltaic assembly power distribution protection system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106899268A (en) * | 2017-04-14 | 2017-06-27 | 中国科学院上海微系统与信息技术研究所 | Multichannel photovoltaic module outdoor generating characteristic and grid-connected decay situation test system |
| CN113054906A (en) * | 2021-03-25 | 2021-06-29 | 合肥阳光智维科技有限公司 | Fault determination method and device for photovoltaic power station, processor and photovoltaic system |
-
2013
- 2013-09-13 CN CN201320571575.XU patent/CN203416215U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106899268A (en) * | 2017-04-14 | 2017-06-27 | 中国科学院上海微系统与信息技术研究所 | Multichannel photovoltaic module outdoor generating characteristic and grid-connected decay situation test system |
| CN113054906A (en) * | 2021-03-25 | 2021-06-29 | 合肥阳光智维科技有限公司 | Fault determination method and device for photovoltaic power station, processor and photovoltaic system |
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Granted publication date: 20140129 |