CN207573310U - A kind of grid-connected monitoring system of distributed photovoltaic - Google Patents
A kind of grid-connected monitoring system of distributed photovoltaic Download PDFInfo
- Publication number
- CN207573310U CN207573310U CN201721351336.8U CN201721351336U CN207573310U CN 207573310 U CN207573310 U CN 207573310U CN 201721351336 U CN201721351336 U CN 201721351336U CN 207573310 U CN207573310 U CN 207573310U
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- Prior art keywords
- grid
- monitoring system
- photovoltaic
- distributed photovoltaic
- control device
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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
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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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
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- Photovoltaic Devices (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model is related to technical field of power systems, more particularly, to a kind of grid-connected monitoring system of distributed photovoltaic.The grid-connected Application of Monitoring System of distributed photovoltaic is in distribution type photovoltaic power generation device, and including control backstage and monitoring device, control backstage can be communicated wirelessly with monitoring device；Monitoring device includes control device and the environment information acquisition device being electrically connected with control device, estimates electric quantity collector, wireless communication apparatus, and control device is electrically connected with photovoltaic generation gauge table.Grid-connected monitoring system combining environmental factor tentatively judges generated energy, after tentatively judging there are stealing possibility, generated energy and the generated energy of estimating that Current Voltage calculates of outputting and inputting based on gird-connected inverter are compared again, if ratio exceeds preset range, are judged as stealing.
Description
Technical field
The utility model is related to technical field of power systems, are more particularly, to a kind of grid-connected monitoring of distributed photovoltaic
System.
Background technology
With the implementation of photovoltaic help-the-poor policy, the distributed photovoltaic power generation permeability grid-connected in mesolow side is gradually increased,
So that power grid while power quality problem is faced, is also faced with the problem of user deceives benefit using technological means stealing, user
The power supply of power distribution network is directly accessed photovoltaic gauge table front end, to increase the electricity reading of photovoltaic gauge table, to the safety of power grid
Damage is caused with the economic interests of power grid.Therefore, it is necessary to set monitoring system is grid-connected to distributed photovoltaic to be monitored, prevent
The only behavior of user's stealing.
Invention content
The utility model is at least one defect overcome described in the above-mentioned prior art, and it is grid-connected to provide a kind of distributed photovoltaic
Monitoring system, it is grid-connected to distributed photovoltaic to be monitored, analyze whether corresponding user has the possibility of stealing.
In order to solve the above technical problems, the utility model employs following technical solution：
A kind of grid-connected monitoring system of distributed photovoltaic, applied to distribution type photovoltaic power generation device, photovoltaic power generation apparatus includes
The AC power distribution cabinet/AC distribution panel and gird-connected inverter of electric connection, AC power distribution cabinet/AC distribution panel are connected by photovoltaic generation gauge table with power distribution network, point
The grid-connected monitoring system of cloth includes control backstage and monitoring device, and control backstage can be communicated wirelessly with monitoring device；
Monitoring device includes control device and the environment information acquisition device being electrically connected with control device, estimates electric quantity collector, nothing
Line communication device, control device are electrically connected with photovoltaic generation gauge table.
Further, environment information acquisition device includes photoelectric sensor, temperature sensor and air velocity transducer.To photovoltaic
The influential environmental factor that generates electricity is acquired, including factors such as light intensity, temperature and wind speed.
Further, it estimates electric quantity collector and includes the first voltage mutual inductor being electrically connected with combining inverter input end
The second voltage mutual inductor and the second current transformer being electrically connected with the first current transformer and with gird-connected inverter output terminal.Point
It is other that grid-connected input current and voltage, output current and voltage are acquired.
Preferably, the grid-connected monitoring system of distributed photovoltaic further includes the display device being electrically connected with control device, for showing
Show and estimate photovoltaic power generation quantity, actual power generation and anti-electricity-theft probability etc..
Preferably, control device is PLC control system.
The utility model proposes the grid-connected monitoring system of distributed photovoltaic by control device, environmental information to acquisition and
It estimates electricity to be analyzed and determined, power quality and stealing possibility is analyzed, analysis result is sent to control backstage
Carry out unified monitoring.
Compared with prior art, advantageous effect is：The utility model passes through the input to environmental factor and gird-connected inverter
Output current voltage is acquired, and calculates the discreet current of photovoltaic power generation apparatus, and grid-connected so as to judgement can with the presence or absence of stealing
Can, it can effectively avoid the illegal stealing of user.
Description of the drawings
Fig. 1 is the structure diagram of grid-connected one embodiment of monitoring system of the utility model distributed photovoltaic.
Specific embodiment
The utility model is described further below in conjunction with the accompanying drawings, it should be noted that being given for example only property of attached drawing
Explanation, it is impossible to be interpreted as the limitation to this patent.
As shown in Figure 1, a kind of grid-connected monitoring system of distributed photovoltaic, applied to distribution type photovoltaic power generation device, photovoltaic hair
Electric installation includes the AC power distribution cabinet/AC distribution panel and gird-connected inverter that are electrically connected, and AC power distribution cabinet/AC distribution panel passes through photovoltaic generation gauge table and distribution
Net is connected, and the grid-connected monitoring system of distributed photovoltaic includes control backstage and monitoring device, and control backstage can be carried out with monitoring device
Wireless telecommunications；Monitoring device includes control device and the environment information acquisition device being electrically connected with control device, estimates electricity and adopt
Acquisition means, wireless communication apparatus, control device are electrically connected with the photovoltaic generation gauge table.
Further, environment information acquisition device includes photoelectric sensor, temperature sensor and air velocity transducer；Estimate electricity
Amount harvester include the first voltage mutual inductor that is electrically connected with combining inverter input end and the first current transformer and with simultaneously
The second voltage mutual inductor and the second current transformer of net inverter output end electrical connection.
Further, the grid-connected monitoring system of distributed photovoltaic further includes the display device being electrically connected with control device.
Preferably, control device is PLC control system.
The utility model proposes the grid-connected monitoring system of distributed photovoltaic by control device, environmental information to acquisition and
It estimates electricity to be analyzed and determined, photovoltaic power generation quantity will be estimated, the presentation of information such as actual power generation and anti-electricity-theft probability exist
In display device, and power quality and stealing possibility are analyzed, analysis result is sent to control backstage carries out unification
Monitoring.
The specific detecting step of system is as follows：
S1：Estimate photovoltaic power generation quantity：DC voltage that gird-connected inverter inputs, straight is acquired by estimating electric quantity collector
Galvanic electricity stream and the alternating current and alternating voltage of gird-connected inverter output, control device, which is estimated to calculate, estimates photovoltaic power generation quantity；
S2：Environment-identification influence factor：Environment information acquisition device is acquired and deposits to intensity of illumination, temperature and wind speed
It is stored in control device；
S3：Analysis calculates, and is as follows：
S31：The relationship that the measured value of photovoltaic generation gauge table is substituted into intensity of illumination and photovoltaic power generation quantity by control device is bent
Line, the relation curve of DC voltage and photovoltaic power generation quantity, DC current and photovoltaic power generation quantity relation curve, and according to grid-connected inverse
The value of alternating voltage and alternating current for becoming device output calculates grid-connected output power；
S32：Ratio is taken to the data of the output power that step S32 is calculated and photovoltaic generation gauge table, if ratio does not exist
In preset first ratio range, that is, judge stealing may occur and perform step S33；If ratio is in preset first ratio model
In enclosing, then judgement is possible there is no stealing, completes result and judges；
S33：Photovoltaic generation of estimating in the data of photovoltaic generation gauge table and step S1 is measured into ratio, if ratio does not exist
In preset second ratio range, then judging may there are stealing；If ratio judges not in preset second ratio range
It is possible there are stealing, it completes result and judges；
S4：Backstage monitors：Electricity stealing probability analysis result is sent to control by control device by wireless communication apparatus
System backstage is monitored.
Obviously, above-described embodiment of the utility model is only intended to clearly illustrate the utility model example, and
It is not the restriction to the embodiment of the utility model.For those of ordinary skill in the art, in above description
On the basis of can also make other variations or changes in different ways.There is no need and unable to give all embodiments
It is exhaustive.All any modification, equivalent and improvement made within the spirit and principles of the present invention etc., should be included in
Within the protection domain of the utility model claims.
Claims (5)
1. a kind of grid-connected monitoring system of distributed photovoltaic, applied to distribution type photovoltaic power generation device, the photovoltaic power generation apparatus packet
The AC power distribution cabinet/AC distribution panel and gird-connected inverter of electric connection are included, AC power distribution cabinet/AC distribution panel is connected by photovoltaic generation gauge table with power distribution network,
It is characterized in that, the grid-connected monitoring system of distributed photovoltaic includes control backstage and monitoring device, the control backstage and prison
Surveying device can communicate wirelessly；The monitoring device includes control device and the environment information acquisition being electrically connected with control device
Device estimates electric quantity collector, wireless communication apparatus, and the control device is electrically connected with the photovoltaic generation gauge table.
2. a kind of grid-connected monitoring system of distributed photovoltaic according to claim 1, it is characterised in that：The environmental information is adopted
Acquisition means include photoelectric sensor, temperature sensor and air velocity transducer.
3. a kind of grid-connected monitoring system of distributed photovoltaic according to claim 1, it is characterised in that：The electricity of estimating is adopted
Acquisition means include the first voltage mutual inductor that is electrically connected with the combining inverter input end and the first current transformer and with institute
State the second voltage mutual inductor and the second current transformer of gird-connected inverter output terminal electrical connection.
4. a kind of grid-connected monitoring system of distributed photovoltaic according to claim 1, it is characterised in that：It further includes and is filled with control
Put the display device of electrical connection.
5. a kind of grid-connected monitoring system of distributed photovoltaic according to claim 1, it is characterised in that：The control device is
PLC control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721351336.8U CN207573310U (en) | 2017-10-19 | 2017-10-19 | A kind of grid-connected monitoring system of distributed photovoltaic |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721351336.8U CN207573310U (en) | 2017-10-19 | 2017-10-19 | A kind of grid-connected monitoring system of distributed photovoltaic |
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| CN207573310U true CN207573310U (en) | 2018-07-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107547047A (en) * | 2017-10-19 | 2018-01-05 | 广东电网有限责任公司江门供电局 | A kind of grid-connected monitoring system of distributed photovoltaic and monitoring method |
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2017
- 2017-10-19 CN CN201721351336.8U patent/CN207573310U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107547047A (en) * | 2017-10-19 | 2018-01-05 | 广东电网有限责任公司江门供电局 | A kind of grid-connected monitoring system of distributed photovoltaic and monitoring method |
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