CN204425270U - A kind of signal supervisory instrument for photovoltaic generating system - Google Patents
A kind of signal supervisory instrument for photovoltaic generating system Download PDFInfo
- Publication number
- CN204425270U CN204425270U CN201520002756.XU CN201520002756U CN204425270U CN 204425270 U CN204425270 U CN 204425270U CN 201520002756 U CN201520002756 U CN 201520002756U CN 204425270 U CN204425270 U CN 204425270U
- Authority
- CN
- China
- Prior art keywords
- circuit
- generating system
- photovoltaic generating
- instrument transformer
- instrument
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
Landscapes
- Testing Relating To Insulation (AREA)
Abstract
The utility model provides a kind of signal supervisory instrument for photovoltaic generating system, be connected with arcing signal processing apparatus with carrier pulse signal processing unit respectively by an instrument transformer, AC signal then on DC bus is by after this instrument transformer, by carrier pulse signal processing unit detection carrier pulse signal wherein, and be uploaded to ipc monitor center after treatment and carry out subsequent analysis, to ensure the generating efficiency of the photovoltaic module of photovoltaic generating system, by arcing signal processing apparatus, alternating component is wherein analyzed simultaneously, to process in time when judging generation phenomenon of arc discharge, ensure photovoltaic generating system safe and stable operation.
Description
Technical field
The utility model relates generally to the application of photovoltaic generating system, more particularly relates to a kind of signal supervisory instrument for photovoltaic generating system.
Background technology
In the practical application of photovoltaic generating system, because the factors such as its intensity of illumination, geographical position, weather condition and ambient climate all can have an impact to the power output of photovoltaic module, thus, in order to improve the generating efficiency of photovoltaic module in photovoltaic generating system, need to carry out Real-Time Monitoring to the above-mentioned each side of photovoltaic module, to carry out the tracking of maximum photovoltaic power point.
In addition, due to the quality problems of actual installation or photovoltaic module, be easy to cause electrical fire because of Arcing fault in the practical application of photovoltaic generating system, cause the property loss of photovoltaic generating system and related facility, thus, in order to ensure the safe and reliable motion of photovoltaic generating system, need to carry out effectively detecting and process in time to the arcing events in photovoltaic generating system.
Utility model content
In view of this, the utility model provides a kind of signal supervisory instrument for photovoltaic generating system, achieves and detects while photovoltaic module and arcing, ensure that efficient, safety, the steady operation of photovoltaic generating system.
To achieve these goals, the utility model provides following technical scheme:
For a signal supervisory instrument for photovoltaic generating system, described device comprises:
The instrument transformer that input is connected with the DC bus in described photovoltaic generating system;
The carrier pulse signal checkout gear be connected with the first output of described instrument transformer;
The arcing signal supervisory instrument be connected with the second output of described instrument transformer.
Preferably, described instrument transformer at least comprises 2 vice-side winding, and a vice-side winding is connected with described carrier pulse signal checkout gear, and another vice-side winding is connected with described arcing signal supervisory instrument.
Preferably, described instrument transformer input is connected with the DC bus in described photovoltaic generating system and is specially:
The former limit winding of described instrument transformer is connected with the DC bus in described photovoltaic generating system;
Or the DC bus in described photovoltaic generating system runs through the iron core of described instrument transformer.
Preferably, described carrier pulse signal checkout gear comprises: the first follow circuit, filter circuit, amplifying circuit, comparison circuit and the first processor that are connected successively, wherein, described first follow circuit is connected with the first output of described instrument transformer.
Preferably, described arcing signal supervisory instrument comprises: the second follow circuit, selection circuit, signal condition amplifying circuit, filter circuit and the second processor that are connected successively, wherein, described second follow circuit is connected with the second output of described instrument transformer.
Preferably, described selection circuit is specially MUX.
Preferably, described filter circuit comprises:
The two-stage second order active low pass filter that one end is connected with described signal condition amplifying circuit;
One end is connected with the other end of described two-stage second order active low pass filter, the two-stage second order active high pass filter that the other end is connected with described second processor.
Preferably, described arcing signal supervisory instrument also comprises:
The threshold voltage comparison circuit be connected with described filter circuit output.
Preferably, described device also comprises:
The warning circuit be connected with described threshold voltage comparison circuit with described second processor respectively.
Preferably, described threshold voltage comparison circuit is specially hysteresis voltage comparator.
As can be seen here, the utility model provides a kind of signal supervisory instrument for photovoltaic generating system, be connected with arcing signal processing apparatus with carrier pulse signal processing unit respectively by an instrument transformer, AC signal then on DC bus is by after this instrument transformer, by carrier pulse signal processing unit detection carrier pulse signal wherein, and be uploaded to ipc monitor center after treatment and carry out subsequent analysis, to ensure the generating efficiency of the photovoltaic module of photovoltaic generating system, by arcing signal processing apparatus, alternating component is wherein analyzed simultaneously, to process in time when judging generation phenomenon of arc discharge, ensure photovoltaic generating system safe and stable operation.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
Fig. 1 is the structural representation of a kind of signal supervisory instrument embodiment for photovoltaic generating system of the utility model;
Fig. 2 is the structural representation of the carrier pulse signal checkout gear embodiment of a kind of signal supervisory instrument for photovoltaic generating system of the utility model;
Fig. 3 is the structural representation of the arcing signal supervisory instrument embodiment of a kind of signal supervisory instrument for photovoltaic generating system of the utility model;
Fig. 4 is the structural representation of a kind of signal monitoring device preferred embodiment for photovoltaic generating system of the utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
The utility model provides a kind of signal supervisory instrument for photovoltaic generating system, be connected with arcing signal processing apparatus with carrier pulse signal processing unit respectively by an instrument transformer, AC signal then on DC bus is by after this instrument transformer, by carrier pulse signal processing unit detection carrier pulse signal wherein, and be uploaded to ipc monitor center after treatment and carry out subsequent analysis, to ensure the generating efficiency of the photovoltaic module of photovoltaic generating system, by arcing signal processing apparatus, alternating component is wherein analyzed simultaneously, to process in time when judging generation phenomenon of arc discharge, ensure photovoltaic generating system safe and stable operation.
The structural representation of a kind of signal supervisory instrument embodiment for photovoltaic generating system of the utility model as shown in Figure 1, the signal supervisory instrument that the present embodiment provides can comprise: instrument transformer 100, carrier pulse signal checkout gear 200 and arcing signal supervisory instrument 300, wherein:
Instrument transformer 100 input is connected with the DC bus in photovoltaic generating system, and the first output is connected with carrier pulse signal checkout gear 200 input, and the second output is connected with the input of arcing signal supervisory instrument 300.
Wherein, instrument transformer 100 and the annexation of the DC bus in photovoltaic generating system can be specifically that the former limit winding of instrument transformer 100 is directly connected with the DC bus in photovoltaic generating system, i.e. physical connection, also can be the iron core that DC bus in photovoltaic generating system runs through instrument transformer 100, namely inductive coupling connects.The utility model does not do concrete restriction to this.
In the present embodiment, this instrument transformer 100 at least comprises 2 vice-side winding, and a vice-side winding is connected with carrier pulse signal checkout gear 200, and another vice-side winding is connected with arcing signal supervisory instrument 300.
In actual applications, because the factors such as intensity of illumination, geographical position, weather condition and ambient climate all can have an impact to the power output of photovoltaic module, thus, in order to ensure the generating efficiency of photovoltaic module, need to carry out Real-Time Monitoring to the working condition of this photovoltaic module.
Concrete, in the application of photovoltaic generating system, in order to reduce its construction cost, normally utilize existing power line transmission photovoltaic module Real-time Monitoring Data, thus, in the present embodiment practical application, in order to realize the Real-Time Monitoring to photovoltaic module working condition, needing to obtain the power carrier pulse signal on electric wire, to its process and could analyze, determine the present behavior of this photovoltaic module, and carry out follow-up work accordingly.
Applicant is learnt by research, carrier pulse signal checkout gear 200 can be connected with DC bus by an instrument transformer, to obtain the carrier pulse signal in the AC signal on this DC bus, and then pass through its analyzing and processing, after obtaining the parameter informations such as the present operating voltage of photovoltaic module, Current Temperatures, be uploaded to ipc monitor center to adjust the controling parameters of photovoltaic generating system accordingly, thus ensure the generating efficiency of the photovoltaic module of this photovoltaic generating system.
In addition; in the practical application of photovoltaic generating system; usually can monitor in its course of work and whether can produce arcing events; to avoid causing electrical fire because of this Arcing fault; concrete; arcing signal monitoring device 300 needed for it is connected with DC bus by an instrument transformer, analyzes the alternating component on this DC bus, existing to determine whether producing electric arc.
But applicant finds, this mode must use two instrument transformers just can complete the input on above-mentioned two sides, thus ensure that photovoltaic generating system is efficient, safety, stable operation, increase the volume of whole checkout gear, cost compare is high.
To this, applicant is by being connected carrier pulse signal checkout gear 200 with same instrument transformer with by arcing signal monitoring device 300, not only achieve the monitoring of detection to phenomenon of arc discharge and photovoltaic module simultaneously, and reduce the volume of whole device and reduce testing cost.
Optionally, a kind of composition structural representation for the carrier pulse signal checkout gear in the signal supervisory instrument of photovoltaic generating system of the utility model as shown in Figure 2, this carrier pulse signal checkout gear 200 specifically can comprise: the first follow circuit 210, filter circuit 220, amplifying circuit 230, comparison circuit 240 and the first processor 250 that are connected successively, wherein, described first follow circuit 210 is connected with the first output of described instrument transformer 100.
Carrier pulse signal is after instrument transformer 100 is responded to, filter circuit 220 will be input to by the first follow circuit 210, thus by too small for amplitude in gained carrier pulse signal, the interference signal filtering that frequency is too high, by amplifying circuit 230, the output signal of filter circuit 220 is amplified again, make it can reach the threshold value of comparison circuit 240, afterwards, carrier pulse signal is input to first processor 250 after the shaping of comparison circuit 240, realized the work such as the parsing of valid data according to pre-set communication protocol by this first processor 250, and data upload parsing obtained is to ipc monitor center, for data display and analysis, thus grasp the working condition of the photovoltaic module in this photovoltaic generating system, to ensure the generating efficiency of this photovoltaic module.
Wherein, it should be noted that; prior art is can refer to about the concrete composition of each circuit in this carrier pulse signal checkout gear 200; the utility model is not described in detail in this; in addition, the composition structure about this carrier pulse signal checkout gear 200 is not limited to this kind of structure shown in Fig. 2, and those skilled in the art can change according to actual needs; pay so long as not those skilled in the art that creative work determines, all belong to the utility model protection range.
Optionally, a kind of composition structural representation for the arcing signal supervisory instrument in the signal supervisory instrument of photovoltaic generating system of the utility model as shown in Figure 3, this arcing signal supervisory instrument 300 specifically can comprise: the second follow circuit 310, selection circuit 320, signal condition amplifying circuit 330 filter circuit 340 and the second processor 350 that are connected successively, wherein, described second follow circuit 310 is connected with the second output of described instrument transformer 100.
The alternating component of DC bus is by being input to this arcing signal supervisory instrument 300 after instrument transformer 100 coupling, first this alternating component enters into selection circuit 320 after the second follow circuit 310, thus the detection realized multichannel phenomenon of arc discharge, undertaken nursing one's health by signal condition amplifying circuit 330 pairs of AC signal subsequently and amplify, then circuit 340 obtains the AC signal of default frequency range after filtering, by the second processor 350, its amplitude is analyzed, to determine whether phenomenon of arc discharge occurs, and in actual applications, when the second processor 350 is determined phenomenon of arc discharge occurs, can triggering system protection executive circuit work, other electric equipments are damaged to avoid the phenomenon of arc discharge because producing.
Wherein, this signal condition amplifying circuit 330 specifically can be made up of signal conditioning circuit and amplifying circuit, and concrete built-up circuit figure can refer to prior art, and the utility model is not described in detail in this.
In addition, the selection circuit 320 in the present embodiment is specifically as follows MUX, thus realizes multiselect one function, and the utility model does not do concrete restriction to its model, as long as can realize this function.
Optionally, above-mentioned filter circuit 340 specifically can comprise:
The two-stage second order active low pass filter that one end is connected with described signal condition amplifying circuit 330;
One end is connected with the other end of described two-stage second order active low pass filter, the two-stage second order active high pass filter that the other end is connected with described second processor 350.
As another embodiment of the utility model; on the architecture basics of above-mentioned arcing signal supervisory instrument 300; can also comprise: the threshold voltage comparison circuit be connected with described filter circuit 340 output; in actual applications; this threshold voltage comparison circuit is by comparing sampled voltage and the threshold voltage preset; as this sampled voltage exceedes this threshold voltage; then think and created phenomenon of arc discharge; now, this threshold voltage comparison circuit can send arcing generation signal to the protection executive circuit of system.
Wherein, this threshold voltage comparison circuit is specifically as follows hysteresis voltage comparator, but is not limited thereto.
Optionally, on the basis of above-described embodiment, signal supervisory instrument can also comprise the warning circuit be connected with threshold voltage comparison circuit with the second processor 350 respectively, and when determining to produce phenomenon of arc discharge, output alarm information, to remind staff.
Wherein, this warning circuit is specifically as follows buzzer, indicator light or voice module etc., and the utility model does not do concrete restriction to this.
In sum, applicant proposed a kind of signal supervisory instrument preferred embodiment for photovoltaic generating system, the structural representation of the preferred embodiment as described in Figure 4, the structure composition of the signal supervisory instrument of the preferred embodiment as shown in Figure 4, the annexation of each circuit can refer to the description of the various embodiments described above corresponding part, and the utility model does not repeat them here.
Known in conjunction with above-mentioned analysis, the present embodiment is connected with arcing signal processing apparatus with carrier pulse signal processing unit respectively by an instrument transformer, AC signal then on DC bus is by after this instrument transformer, by carrier pulse signal processing unit detection carrier pulse signal wherein, and be uploaded to ipc monitor center after treatment and carry out subsequent analysis, to ensure the generating efficiency of the photovoltaic module of photovoltaic generating system, by arcing signal processing apparatus, alternating component is wherein analyzed simultaneously, to process in time when judging generation phenomenon of arc discharge, ensure photovoltaic generating system safe and stable operation.
It should be noted that, about in the various embodiments described above, the such as relational terms of first, second grade and so on is only used for a circuit or device and another circuit or device region to separate, and not necessarily requires or imply the relation or order that there is any this reality between these circuit or device.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. for a signal supervisory instrument for photovoltaic generating system, it is characterized in that, described device comprises:
The instrument transformer that input is connected with the DC bus in described photovoltaic generating system;
The carrier pulse signal checkout gear be connected with the first output of described instrument transformer;
The arcing signal supervisory instrument be connected with the second output of described instrument transformer.
2. device according to claim 1, is characterized in that, described instrument transformer at least comprises 2 vice-side winding, and a vice-side winding is connected with described carrier pulse signal checkout gear, and another vice-side winding is connected with described arcing signal supervisory instrument.
3. device according to claim 2, is characterized in that, described instrument transformer input is connected with the DC bus in described photovoltaic generating system and is specially:
The former limit winding of described instrument transformer is connected with the DC bus in described photovoltaic generating system;
Or the DC bus in described photovoltaic generating system runs through the iron core of described instrument transformer.
4. device according to claim 1, it is characterized in that, described carrier pulse signal checkout gear comprises: the first follow circuit, filter circuit, amplifying circuit, comparison circuit and the first processor that are connected successively, wherein, described first follow circuit is connected with the first output of described instrument transformer.
5. device according to claim 1, it is characterized in that, described arcing signal supervisory instrument comprises: the second follow circuit, selection circuit, signal condition amplifying circuit, filter circuit and the second processor that are connected successively, wherein, described second follow circuit is connected with the second output of described instrument transformer.
6. device according to claim 5, is characterized in that, described selection circuit is specially MUX.
7. device according to claim 5, is characterized in that, described filter circuit comprises:
The two-stage second order active low pass filter that one end is connected with described signal condition amplifying circuit;
One end is connected with the other end of described two-stage second order active low pass filter, the two-stage second order active high pass filter that the other end is connected with described second processor.
8. the device according to any one of claim 5-7, is characterized in that, described arcing signal supervisory instrument also comprises:
The threshold voltage comparison circuit be connected with described filter circuit output.
9. device according to claim 8, is characterized in that, described device also comprises:
The warning circuit be connected with described threshold voltage comparison circuit with described second processor respectively.
10. device according to claim 8, is characterized in that, described threshold voltage comparison circuit is specially hysteresis voltage comparator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520002756.XU CN204425270U (en) | 2015-01-04 | 2015-01-04 | A kind of signal supervisory instrument for photovoltaic generating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520002756.XU CN204425270U (en) | 2015-01-04 | 2015-01-04 | A kind of signal supervisory instrument for photovoltaic generating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204425270U true CN204425270U (en) | 2015-06-24 |
Family
ID=53475598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520002756.XU Active CN204425270U (en) | 2015-01-04 | 2015-01-04 | A kind of signal supervisory instrument for photovoltaic generating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204425270U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067945A (en) * | 2015-09-07 | 2015-11-18 | 苏州长风自动化科技有限公司 | Intelligent detection unit with direct-current arcing detection function and junction box |
| CN105353263A (en) * | 2015-11-24 | 2016-02-24 | 苏州长风自动化科技有限公司 | Junction box with direct current arc discharge detection function |
| CN105896460A (en) * | 2016-04-12 | 2016-08-24 | 常熟市福莱德连接器科技有限公司 | Photovoltaic module intelligent isolation switch |
-
2015
- 2015-01-04 CN CN201520002756.XU patent/CN204425270U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067945A (en) * | 2015-09-07 | 2015-11-18 | 苏州长风自动化科技有限公司 | Intelligent detection unit with direct-current arcing detection function and junction box |
| CN105353263A (en) * | 2015-11-24 | 2016-02-24 | 苏州长风自动化科技有限公司 | Junction box with direct current arc discharge detection function |
| CN105896460A (en) * | 2016-04-12 | 2016-08-24 | 常熟市福莱德连接器科技有限公司 | Photovoltaic module intelligent isolation switch |
| CN105896460B (en) * | 2016-04-12 | 2018-11-09 | 常熟市福莱德连接器科技有限公司 | Photovoltaic module Intelligent isolation switch |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204166106U (en) | Threephase asynchronous machine malfunction monitoring and warning system | |
| CN204425270U (en) | A kind of signal supervisory instrument for photovoltaic generating system | |
| CN103712679A (en) | Converter transformer operating state on-line audio analyzing and monitoring system | |
| CN103607007A (en) | Wireless charging emission circuit | |
| CN204166078U (en) | A kind of switching detection device being applicable to switch, relay, fuse | |
| CN104625332B (en) | Stability evaluation system and method based on carbon dioxide welding input end electric signal | |
| CN207908621U (en) | A kind of partial discharge of switchgear ultrasonic alarm | |
| CN105445594A (en) | Power grid fault detection system | |
| CN103647252A (en) | Electric leakage switch having FSK communication function | |
| CN110595340A (en) | High-voltage overhead transmission line sag detection system based on field intensity change and detection method thereof | |
| CN205091421U (en) | Synchronous generator winding short circuit alarm device based on negative current | |
| CN102759681A (en) | Transformer core ground fault monitoring device | |
| CN211209373U (en) | Early warning system for distribution room | |
| CN204008825U (en) | A kind of overvoltage protection device with warning function | |
| CN105301343A (en) | Power monitoring system of three phase power supply | |
| CN212905205U (en) | Join in marriage undulant detection device of electrical room outer net | |
| CN103852659A (en) | Novel SPD on-line detection device | |
| CN203385782U (en) | Non-transformer isolated voltage and current acquisition device | |
| CN111426864A (en) | Universal meter with high-voltage warning function | |
| CN104280599B (en) | Three-phase voltage signal detection alarm circuit | |
| CN105987772A (en) | Switchgear temperature measuring device with luminous-energy power supply system | |
| CN204231207U (en) | A kind of inversion welding source main loop circuit structure | |
| CN203037812U (en) | Signal modulation system for panoramic partial discharge monitoring of transformer substation | |
| CN204577863U (en) | A kind of low-voltage distribution cabinet of ANOMALOUS VARIATIONS warning device with voltage | |
| CN207573069U (en) | A kind of high-power emergency power supply patrolling control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |