CN202616800U - Distributed grid-connected solar-energy photovoltaic system - Google Patents
Distributed grid-connected solar-energy photovoltaic system Download PDFInfo
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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
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Abstract
本实用新型提供一种分布式并网太阳能光伏系统，包括：直流光伏组件，接收太阳能并将其转换为直流电；逆变器，其输入端与直流光伏组件连接，将直流电转换为交流电并网输出；参数设置直流电源，与逆变器的输出端连接，向逆变器提供预定大小和持续时间的直流电压；其中，逆变器包括：电压检测电路，检测直流电压的大小和持续时间；参数处理电路，确定需要设置的参数名称及其具体数值；存储电路，存储需要设置的参数名称及其具体数值；控制电路，从存储电路中读取参数名称及其具体数值并对逆变器进行参数设置。本实用新型无需远程通信就可以进行分布式并网太阳能光伏逆变器的参数设置。
The utility model provides a distributed grid-connected solar photovoltaic system, comprising: a DC photovoltaic component, which receives solar energy and converts it into DC power; an inverter, whose input end is connected with the DC photovoltaic component, converts the DC power into an AC power grid-connected output ; The parameter setting DC power supply is connected to the output terminal of the inverter, and provides the inverter with a predetermined size and duration of DC voltage; wherein, the inverter includes: a voltage detection circuit, which detects the magnitude and duration of the DC voltage; The processing circuit determines the name of the parameter to be set and its specific value; the storage circuit stores the name of the parameter and its specific value to be set; the control circuit reads the name of the parameter and its specific value from the storage circuit and performs parameters for the inverter set up. The utility model can perform parameter setting of the distributed grid-connected solar photovoltaic inverter without remote communication.
Description
Technical field
The utility model relates to the photovoltaic sciemtifec and technical sphere, and specifically, the utility model relates to a kind of distributed solar energy photovoltaic system that is incorporated into the power networks.
Background technology
The solar energy photovoltaic system inverter trends towards distributed miniature inverter (little inverter) recently.Miniature inverter provides the maximum power point control to each photovoltaic module, thereby makes each assembly produce maximum energy, improves the performance of photovoltaic system.Little inverter also produces the low-voltage alternating-current output of directly being incorporated into the power networks, rather than the High Level DC Voltage of center type inverter system, improves safety and efficient.The output-parallel of a plurality of little inverters is connected with electrical network with distribution box through terminal box then.Little inverter also can be integrated in the photovoltaic module, is alternating current thereby make the output of assembly, and this assembly is called as the interchange photovoltaic module.Exchange photovoltaic module and simplify the installation of photovoltaic generating system greatly, reduce system cost, even the client can install voluntarily.
Fig. 1 is the structural representation of a distributed solar energy photovoltaic system that is incorporated into the power networks in the prior art.As shown in the figure, in this photovoltaic system 100, the input of each inverter 102 is connected respectively to each DC power supply 101, like the direct current photovoltaic module.The output of a plurality of inverters 102 connects AC network 103 and a manager 104 again, and manager 104 has the function of communicating by letter with each inverter 102.Be shown as manager 104 among this figure and carry out power line communication through ac cable and inverter 102.
With parameter relevant circuit module sketch map is set in the inverter of Fig. 2 for a distributed solar energy photovoltaic system that is incorporated into the power networks in the prior art.As shown in the figure, manager 104 sends data to each inverter 102.Has voltage detecting circuit 1021 in the inverter 102; Telecommunication circuit 1022 receives the parameter value of Data Post for needing to be provided with in addition; This parameter value is flowed in the memory circuit 1023, and control circuit 1024 reads parameter value and uses from memory circuit 1023.This memory circuit 1023 can be independently, also can be integrated in telecommunication circuit 1022 or the control circuit 1024.
Inverter has the kinds of protect function, such as exchanging the overvoltage/undervoltage protection, exchanges underfrequency protection, the protection of direct current input power, DC input voitage protection, overheat protector etc.These defencive functions are employed in the method that parameter in the software is provided with usually, and when detected data exceeded parameter scope is set, defencive function started.For the distributed type minisize inverter system, the inverter number is many, and it is wide to distribute, and for being applicable to that the outdoor application environment is generally totally-enclosed design, can only be through method for communicating to carrying out the parameter setting of unit, such as power line communication, radio communication etc.But,, just can't carry out the setting of parameter for the distributed inverter that does not have telecommunications functions.
So, have demand to need not telecommunication and just can carry out method and the facility that the distributed solar photovoltaic inverter parameter that is incorporated into the power networks is provided with.
Summary of the invention
The utility model technical problem to be solved provides a kind of distributed solar energy photovoltaic system that is incorporated into the power networks, and need not the parameter setting that telecommunication just can be carried out the distributed solar photovoltaic inverter that is incorporated into the power networks.
For solving the problems of the technologies described above, the utility model provides a kind of distributed solar energy photovoltaic system that is incorporated into the power networks, and comprising:
One or more direct current photovoltaic modulies are used to receive solar energy and are converted into direct current;
One or more inverters, its input and the corresponding connection of one or more said direct current photovoltaic modulies are used for converting said direct current into the alternating current output of being incorporated into the power networks;
Parameter is provided with DC power supply, is connected with the output of one or more said inverters, and being used for provides predetermined size and the direct voltage of duration to said inverter;
Wherein, said inverter comprises:
Voltage detecting circuit is provided with DC power supply with said parameter and is connected, and is used to detect the size and the duration of said direct voltage;
The parameter treatment circuit is connected with said voltage detecting circuit, is used for according to setting parameter title and the concrete numerical value thereof that rule confirms that needs are provided with;
Memory circuit is connected with said parameter treatment circuit, is used to store said parameter title and the concrete numerical value thereof that needs are provided with;
Control circuit is connected with said memory circuit, is used for reading said parameter title and concrete numerical value thereof and said inverter being carried out the parameter setting from said memory circuit.
Alternatively, said parameter title comprises: exchange overvoltage threshold, AC undervoltage threshold value, exchange the overfrequency threshold value, exchange under-frequency threshold value and temperature.
Alternatively, said setting rule comprises: so that the different time section is corresponding respectively different parameter titles is set according to sequencing, the different sizes of said direct voltage correspond to the concrete numerical value of said parameter respectively according to corresponding relation simultaneously.
Alternatively, said setting rule comprises: the different length of the duration that applies according to said direct voltage are corresponding respectively to be provided with different parameter titles, simultaneously the different sizes of the said direct voltage concrete numerical value of corresponding said parameter respectively.
Alternatively, said inverter (302) is the distributed type minisize inverter.
Compared with prior art, the utlity model has following advantage:
The utility model applies direct voltage through the ac output end at inverter; The program of in inverter, setting make different direct voltage size and duration respectively correspondence different parameter titles and different concrete numerical value are set, thereby need not the parameter setting that telecommunication just can be accomplished inverter.
Description of drawings
The utility model above-mentioned and other characteristic, character and advantage will become more obvious through the description below in conjunction with accompanying drawing and embodiment, wherein:
Fig. 1 is the structural representation of a distributed solar energy photovoltaic system that is incorporated into the power networks in the prior art;
With parameter relevant circuit module sketch map is set in the inverter of Fig. 2 for a distributed solar energy photovoltaic system that is incorporated into the power networks in the prior art;
Fig. 3 is the structural representation of the distributed solar energy photovoltaic system that is incorporated into the power networks of an embodiment of the utility model;
With parameter relevant circuit module sketch map is set in the inverter of Fig. 4 for the distributed solar energy photovoltaic system that is incorporated into the power networks of an embodiment of the utility model;
Fig. 5 is the rough schematic of the inverter parameter setting of the distributed solar energy photovoltaic system that is incorporated into the power networks of an embodiment of the utility model;
Fig. 6 is the rough schematic of the inverter parameter setting of the distributed solar energy photovoltaic system that is incorporated into the power networks of another embodiment of the utility model;
Fig. 7 is the method flow diagram of the inverter parameter setting of the distributed solar energy photovoltaic system that is incorporated into the power networks of an embodiment of the utility model;
Fig. 8 is the simple flow chart of the parameter setting method inverter startup of an embodiment of use the utility model.
Embodiment
Below in conjunction with specific embodiment and accompanying drawing the utility model is described further; Set forth more details in the following description so that make much of the utility model; But the utility model obviously can be implemented with multiple this description ground alternate manner that is different from; Therefore those skilled in the art can do similar popularization, deduction according to practical situations under the situation of the utility model intension, should be with the protection range of content constraints the utility model of this specific embodiment.
Fig. 3 is the structural representation of the distributed solar energy photovoltaic system that is incorporated into the power networks of an embodiment of the utility model.As shown in the figure, this distributed solar energy photovoltaic system 300 that is incorporated into the power networks can comprise: one or more direct current photovoltaic module 301, one or more inverter 302 and parameter are provided with DC power supply 303.
Wherein, direct current photovoltaic module 301 is used to receive solar energy and is converted into direct current.Inverter 302 can be the distributed type minisize inverter, and its input and the 301 corresponding connections of direct current photovoltaic module are used for converting direct current into the alternating current output of being incorporated into the power networks.Parameter is provided with DC power supply 303 for regulating the DC power supply of output voltage and duration, is connected with the output of one or more inverters 302, and being used for provides predetermined size and the direct voltage of duration to inverter 302.Inverter 302 can have the multiple parameter that will be provided with, such as ac output voltage, interchange output frequency, direct current input current, temperature etc.Each parameter also can have multiple numerical value.This parameter setting can define back Wen Huizuo more detailed description through magnitude of voltage and the time that parameter is provided with DC power supply 303.
With parameter relevant circuit module sketch map is set in the inverter of Fig. 4 for the distributed solar energy photovoltaic system that is incorporated into the power networks of an embodiment of the utility model.As shown in the figure, this inverter 302 can comprise: voltage detecting circuit 3021, parameter treatment circuit 3022, memory circuit 3023 and control circuit 3024 do not comprise telecommunication circuit.The ac output end of inverter 302 connects parameter DC power supply 303 is set.
Wherein, voltage detecting circuit 3021 is provided with DC power supply 303 with parameter and is connected, and is used to detect the size and the duration of direct voltage, and gives parameter treatment circuit 3022 with transfer of data.Parameter treatment circuit 3022 is connected with voltage detecting circuit 3021, is used for according to setting parameter title and the concrete numerical value thereof that rule confirms that needs are provided with, and subsequent data is transferred to memory circuit 3023.This setting rule can for: so that the different time section is corresponding respectively different parameter titles is set according to sequencing, the different sizes of direct voltage correspond to the concrete numerical value of parameter respectively according to corresponding relation simultaneously; The different length of the duration that perhaps applies according to direct voltage are corresponding respectively to be provided with different parameter titles, simultaneously the different sizes of the direct voltage concrete numerical value of corresponding parameter respectively.Memory circuit 3023 is connected with parameter treatment circuit 3022, is used to store parameter title and the concrete numerical value thereof that needs are provided with.Control circuit 3024 is connected with memory circuit 3023, is used for reading parameter title and concrete numerical value thereof and inverter 302 being carried out the parameter setting from memory circuit 3023.This memory circuit 3023 can be independently, also can be integrated in parameter treatment circuit 3022 or the control circuit 3024.
Specify several kinds of situation that the utility model parameter is provided with below.Fig. 5 is the rough schematic of the inverter parameter setting of the distributed solar energy photovoltaic system that is incorporated into the power networks of an embodiment of the utility model.In the present embodiment, so that the different time section is corresponding respectively different parameter titles is set according to sequencing.For example 0-5 second is for being provided with the interchange overvoltage threshold, and 10-15 exchanges the overfrequency threshold value for being provided with second to 5-10 in order the AC undervoltage threshold value to be set second, and 15-20 second is for being provided with interchange under-frequency threshold value.Simultaneously, the different sizes of direct voltage correspond to the concrete numerical value of parameter respectively according to corresponding relation, and promptly being provided with of parameter values can adopt different direct voltages to accomplish.Such as, the scope that exchanging the output over-voltage protection parameter needs to regulate is 240～270V, the corresponding median 255V that exchanges the output over-voltage protection parameter in the time of can getting direct voltage that parameter is provided with DC power supply 303 so and be 200V.Like this, when parameter is provided with the every increase of the direct voltage 5V of DC power supply 303, exchanging the output over-voltage protection parameter increases 1V.When the direct voltage that in parameter DC power supply 303 is set so was 275V, exchanging the output over-voltage protection parameter was 270V; And parameter is when being provided with the direct voltage of DC power supply 303 and being 125V, and exchanging the output over-voltage protection parameter is 240V.Setting and exchanging the output over-voltage protection parameter is 270V, and just at 0-5 in second, parameter is provided with direct voltage output continuing the to be set at 275V of DC power supply 303.The condition that is provided with of other protection parameters of back can be provided with similar method.
Fig. 6 is the rough schematic of the inverter parameter setting of the distributed solar energy photovoltaic system that is incorporated into the power networks of another embodiment of the utility model.In the present embodiment, parameter is provided with DC power supply 303 and remains on a certain direct voltage a period of time, and the different length of the duration that applies according to direct voltage can correspondingly respectively be provided with different parameter titles.Such as, can set 100V is the voltage that the parameter title is set, and keeps 5 seconds continuously for exchanging overvoltage threshold, keeps continuously being the AC undervoltage threshold value in 10 seconds, keeps 15 seconds continuously for exchanging the overfrequency threshold value, keeps 20 seconds continuously for exchanging under-frequency threshold value or the like.The different sizes of direct voltage also can be distinguished the concrete numerical value of corresponding parameter simultaneously.As shown in Figure 6, suppose that the time that is provided with is 1 second.In this case, 5 seconds 100V in 0-5 second represent that the name that parameter is set is called the interchange overvoltage threshold, and 5-6 second is for being provided with the interchange overvoltage threshold.10 seconds 100V of 6-16 second represent that the name that parameter is set is called the AC undervoltage threshold value, and 16-17 second is for being provided with the AC undervoltage threshold value.The similar method of the condition that is provided with of other protection parameters of back is provided with.
Fig. 7 is the method flow diagram of the inverter parameter setting of the distributed solar energy photovoltaic system that is incorporated into the power networks of an embodiment of the utility model.As shown in the figure, this parameter setting method can comprise:
Execution in step S701 at first, the condition that is provided with that the parameter that decision will be provided with is corresponding;
Determined to be provided with after the condition execution in step S702 again, according to condition is set, setup parameter is provided with DC power supply 303, this is provided with direct voltage and the duration that condition and parameter be provided with DC power supply 303 and provide is mapped;
Execution in step S703 then, affirmation is whether parameter setting is accomplished, and accomplishes if set, and then gets back to step S701, continues new parameter is set, if all set completion, then enters into next procedure S704;
Execution in step S704, operational system is carried out the setting of inverter parameter.
Fig. 8 is the simple flow chart of the parameter setting method inverter startup of an embodiment of use the utility model.As shown in the figure, this flow process can comprise:
Execution in step S801 at first, voltage detecting circuit 3021 detects the voltage of inverter 302 AC side (being output);
Secondly execution in step S802 confirms whether detected voltage is direct voltage.If not direct voltage, then forward step S803 to, get into and exchange the control preparation of being incorporated into the power networks; If direct voltage, execution in step S804 then, inverter 302 gets into parameters pattern is set, and prepares to carry out the parameter setting.
If the condition that is provided with that the parameter of having confirmed to be provided with is corresponding then is provided with this condition enactment on the DC power supply 303 in parameter.After the parameter setting completion, operational system is carried out the setting of inverter parameter.
Whether execution in step S805 subsequently, it is unusual to detect direct voltage.If unusual, then forward step S803 to, enter into and exchange the control preparation of being incorporated into the power networks, if not unusual, get into the inverter parameter again pattern is set.
The utility model applies direct voltage through the ac output end at inverter; The program of in inverter, setting make different direct voltage size and duration respectively correspondence different parameter titles and different concrete numerical value are set, thereby need not the parameter setting that telecommunication just can be accomplished inverter.
Though the utility model with preferred embodiment openly as above, it is not to be used for limiting the utility model, and any those skilled in the art can make possible change and modification in spirit that does not break away from the utility model and scope.Therefore, every content that does not break away from the utility model technical scheme, all falls within the protection range that the utility model claim defined any modification, equivalent variations and modification that above embodiment did according to the technical spirit of the utility model.
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| CN2011204065030U CN202616800U (en) | 2011-10-21 | 2011-10-21 | Distributed grid-connected solar-energy photovoltaic system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102437793A (en) * | 2011-10-21 | 2012-05-02 | 浙江昱能光伏科技集成有限公司 | Distributed grid-connected solar energy photovoltaic system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102437793A (en) * | 2011-10-21 | 2012-05-02 | 浙江昱能光伏科技集成有限公司 | Distributed grid-connected solar energy photovoltaic system |
| CN102437793B (en) * | 2011-10-21 | 2014-07-23 | 浙江昱能科技有限公司 | Distributed grid-connected solar energy photovoltaic system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG YUNENG TECHNOLOGY CO., LTD. Free format text: FORMER NAME: ALTENERGY POWER SYSTEM INC. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 314050 Jiaxing, South Lake District, Zhejiang, Asia Pacific Road, No. 1 Patentee after: Zhejiang Yuneng Technology Co., Ltd. Address before: 314050 Jiaxing, South Lake District, Zhejiang, Asia Pacific Road, No. 1 Patentee before: Altenergy Power System Inc. |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 3 / F, building 1, No. 1, Asia Pacific Road (Jiaxing Science and technology city), Nanhu District, Jiaxing City, Zhejiang Province Patentee after: Yuneng Technology Co., Ltd Address before: 314050 No. 1 Asia Pacific Road, Nanhu District, Zhejiang, Jiaxing Patentee before: Zhejiang Yuneng Technology Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121219 |