CN107612036A - A kind of anti-PID photovoltaic DC-to-AC converters device based on EnOcean technologies - Google Patents
A kind of anti-PID photovoltaic DC-to-AC converters device based on EnOcean technologies Download PDFInfo
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- CN107612036A CN107612036A CN201711013331.9A CN201711013331A CN107612036A CN 107612036 A CN107612036 A CN 107612036A CN 201711013331 A CN201711013331 A CN 201711013331A CN 107612036 A CN107612036 A CN 107612036A
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- 238000005516 engineering process Methods 0.000 title claims abstract description 20
- 238000004891 communication Methods 0.000 claims abstract description 32
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 230000007935 neutral effect Effects 0.000 claims description 6
- 238000012856 packing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000006855 networking Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
-
- 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
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
-
- 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
-
- 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
- Y04S10/123—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving renewable energy sources
-
- 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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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- Inverter Devices (AREA)
Abstract
The invention discloses a kind of anti-PID photovoltaic DC-to-AC converters device based on EnOcean technologies, it is characterized in that, including some MPPT conflux box unit, photovoltaic combining inverter unit, anti-PID unit；Conflux box unit, anti-PID units of some MPPT is connected with photovoltaic combining inverter unit, and the photovoltaic combining inverter unit output end is connected with power network.Advantage：Integrate super low-power consumption, telecommunication, intelligent control, realize the wireless telecommunications of photovoltaic DC-to-AC converter and MPPT header boxs, reduce the energy consumption that photovoltaic DC-to-AC converter communication is transmitted, improve the intelligent level of photovoltaic plant；Ensure that also there is superpower antijamming capability while communication distance.Compared with similar technique, its is low in energy consumption, long transmission distance, with networking and can support the functions such as relaying, can ensure stability, the security of whole communication system.
Description
Technical field
The present invention relates to a kind of anti-PID photovoltaic DC-to-AC converters device based on EnOcean technologies, belong to electrical technology field.
Background technology
In photovoltaic generating system, through moisture, the environment of high temperature easily produce vapor, if steam gos deep into component,
So the conductance of encapsulating material (ENC) rises, and the leakage current increase of corresponding assembly, can cause assembly surface polarization phenomena,
Have a strong impact on the generating efficiency of photovoltaic battery panel.General common method is to be directly grounded to suppress PID effects, this method by negative pole
Disposal method is easy, cost is low, significant effect, but negative pole is directly grounded can cause potential safety hazard, threatens the normal operation in power station
With O＆M safety.After inverter negative pole ground connection, cell panel can be caused short-circuit if generating assembly plus earth failure, and O＆M people
If member, which touches positive pole, can then occur shock hazard.
Inverter communication modes traditional at present mainly have：The RS485 communications of " handing in hand "；PLC power carrier communications etc..
Wherein, 485 communications need to lay communication cable, communication failure occur, safeguard inconvenience.PLC power carrier communications, are easily done by environment
Disturb, when transmission line load is larger, high abatement is easily produced to carrier signal, has a strong impact on signal transmission quality.
The content of the invention
The technical problems to be solved by the invention are the defects of overcoming prior art, there is provided a kind of reliability is high, low in energy consumption
The anti-PID photovoltaic DC-to-AC converters device based on EnOcean technologies.
In order to solve the above technical problems, the present invention provides a kind of anti-PID photovoltaic DC-to-AC converters dress based on EnOcean technologies
Put, it is characterized in that, including some MPPT conflux box unit, photovoltaic combining inverter unit, anti-PID unit；Some MPPT
Conflux box unit, anti-PID unit is connected with photovoltaic combining inverter unit, the photovoltaic combining inverter unit output end and electricity
Net is connected；
The photovoltaic combining inverter unit include Y/ Δs transformer module, rectification module, the first power module, control module with
And inversion module；
The MPPT conflux box unit include EMC modules, second source module, power conversion modules, DSP module, first
EnOcean wireless communication modules, voltage sample module and current sample module；
The anti-PID unit leads to including both positive and negative polarity voltage sample module, MCU module, the 2nd EnOcean wireless communication modules, 232
Interrogate module and voltage regulating module.
Further, MPPT box unit output ends of confluxing pass through wire phase with the photovoltaic combining inverter unit
Even, the anti-PID unit is connected with the photovoltaic combining inverter unit by cable, the MPPT conflux box unit with it is described
Anti- PID unit passes through EnOcean wireless connections.
Further, the MPPT box units that conflux are connected on photovoltaic battery panel side, and the anti-PID unit is connected on the photovoltaic
Combining inverter cell side.
Further, the inversion module input and the MPPT box unit that confluxes are connected, the inversion module output
End is connected with power network, and the Y/ Δs transformer module Δ side is connected with power network, the Y/ Δs transformer module Y sides and the rectification
Module AC is connected, and the Y/ Δs transformer module Y side neutral points are connected with anti-PID unit, the rectification module DC side
It is connected with the first power module input, first power module outlet and the anti-PID unit, the control mould
Block is connected, and the control module is connected with the anti-PID unit, the inversion module.
Further, the EMC module inputs, the second source module input respectively with solar panel phase
Even, the second source module output end is connected with the DSP module, the DSP module respectively with the current sample module,
The voltage sample module, the first EnOcean wireless communication modules and the power conversion modules output end are connected, institute
Power conversion modules input is stated with the EMC modules to be connected.
Further, the MCU module and the both positive and negative polarity voltage sample module, the 2nd EnOcean wireless telecommunications
Module, 232 communication module, the voltage regulating module are connected.
The beneficial effect that the present invention is reached：
1）Anti- PID photovoltaic DC-to-AC converters device based on EnOcean technologies realizes negative pole void by adjusting transformer neutral point current potential
Intend grounding function, this method integrates super low-power consumption, telecommunication, intelligent control, realizes photovoltaic DC-to-AC converter and is converged with MPPT
The wireless telecommunications of case are flowed, reduce the energy consumption that photovoltaic DC-to-AC converter communication is transmitted, improve the intelligent level of photovoltaic plant；
2）The present invention only drives the chipset of low-power consumption with the signal energy of collection, realizes the wireless telecommunications skill of high quality
Art.EnOcean technologies also have superpower antijamming capability while communication distance is ensured.Compared with similar technique, its work(
Low, long transmission distance is consumed, with networking and the functions such as relaying can be supported, stability, the safety of whole communication system can be ensured
Property.
Brief description of the drawings
Fig. 1 is an anti-PID photovoltaic DC-to-AC converters system structure of device figure based on EnOcean technologies of the invention；
Fig. 2 is the MPPT header box structure charts of an anti-PID photovoltaic DC-to-AC converters device based on EnOcean technologies of the invention；
Fig. 3 is the anti-PID unit structure chart of an anti-PID photovoltaic DC-to-AC converters device based on EnOcean technologies of the invention.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following examples are only used for clearly illustrating the present invention
Technical scheme, and can not be limited the scope of the invention with this.
With reference to Fig. 1, a kind of anti-PID photovoltaic DC-to-AC converters device based on EnOcean technologies, including some MPPT conflux packing list
Member, photovoltaic combining inverter unit, anti-PID unit；Some MPPT conflux box unit, anti-PID unit with it is grid-connected inverse
Become device unit to be connected, the photovoltaic combining inverter unit output end is connected with power network；
The photovoltaic combining inverter unit includes a Y/ Δs transformer module, a rectification module, a first power supply mould
Block, a control module and an inversion module；
With reference to Fig. 2, the MPPT conflux box unit include an EMC module, a second source module, a power conversion mould
Block, a DSP module, a first EnOcean wireless communication module, a voltage sample module and a current sample mould
Block；
The MPPT conflux box unit using the voltage sample module and the current sample module by branch voltage, branch road electricity
The information such as stream, branch power are sent to the anti-PID unit by the EnOcean wireless communication modules.
With reference to Fig. 3, the anti-PID unit include a both positive and negative polarity voltage sample module, a MCU module, one second
EnOcean wireless communication modules, 232 communication modules and a voltage regulating module.
The MPPT box units that conflux are connected on photovoltaic battery panel side, and the anti-PID unit is connected on the photovoltaic grid-connected inversion
Device cell side.MPPT box unit output ends of confluxing are connected with the photovoltaic combining inverter unit by cable, described anti-
PID unit is connected with the photovoltaic combining inverter unit by 232 communication module, and the MPPT confluxes box unit and institute
State anti-PID unit and the control module and photovoltaic electric are passed through by EnOcean wireless connections, the photovoltaic combining inverter unit
Stand Background communication.
The anti-PID unit by the MPPT conflux box unit send information sent by 232 communication module to institute
Photovoltaic combining inverter unit is stated, realizes that the photovoltaic combining inverter unit confluxes the prison of box unit to each MPPT
Control.
The inversion module input and the MPPT box unit that confluxes are connected, the inversion module output end and power network phase
Even, the Y/ Δs transformer module Δ side is connected with power network, the Y/ Δs transformer module Y sides and the rectification module AC
It is connected, the Y/ Δs transformer module Y side neutral points are connected with anti-PID unit, the rectification module DC side and described first
Power module input is connected, and first power module outlet is connected with the anti-PID unit, the control module, institute
Control module is stated with the anti-PID unit, the inversion module to be connected.
By adjusting the Y sides neutral point above earth potential, it is possible to achieve the regulation of direct current negative busbar above earth potential, to realize
The function of negative busbar virtual ground.The rectification module is simultaneously to the photovoltaic combining inverter unit and the anti-PID unit
Power supply.
The EMC module inputs, the second source module input are connected with solar panel, second electricity
Source module output end is connected with the DSP module, the DSP module and the current sample module, the voltage sample module,
The first EnOcean wireless communication modules and the power conversion modules output end are connected, and the power conversion modules are defeated
Enter end with the EMC modules to be connected.
It is the MCU module and the both positive and negative polarity voltage sample module, the 2nd EnOcean wireless communication modules, described
232 communication modules, the voltage regulating module are connected.
The both positive and negative polarity voltage sample module gathers current potential between positive and negative bus above earth potential and positive and negative busbar simultaneously,
By obtained positive pole above earth potential, insulation blocking is carried out to cell panel, prevents positive and negative while shorted to earth from being caused to cell panel
Infringement.According to the negative busbar above earth potential collected, transformer neutral point current potential is changed by the voltage regulating module so that negative mother
Line above earth potential is realized higher than setting threshold values and suppresses PID effects.
Each component, the model of single-chip microcomputer in the present invention be not limited to disclosed in this invention model, in the prior art
Can be used for the present invention with disclosed model function it is similar may be applicable to the present invention.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvement and deformation can also be made, these are improved and deformation
Also it should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of anti-PID photovoltaic DC-to-AC converters device based on EnOcean technologies, it is characterized in that, including some MPPT conflux packing list
Member, photovoltaic combining inverter unit, anti-PID unit；Some MPPT conflux box unit, anti-PID unit with it is grid-connected inverse
Become device unit to be connected, the photovoltaic combining inverter unit output end is connected with power network；
The photovoltaic combining inverter unit include Y/ Δs transformer module, rectification module, the first power module, control module with
And inversion module；
The MPPT conflux box unit include EMC modules, second source module, power conversion modules, DSP module, first
EnOcean wireless communication modules, voltage sample module and current sample module；
The anti-PID unit leads to including both positive and negative polarity voltage sample module, MCU module, the 2nd EnOcean wireless communication modules, 232
Interrogate module and voltage regulating module.
2. a kind of anti-PID photovoltaic DC-to-AC converters device based on EnOcean technologies according to claim 1, it is characterized in that, institute
State MPPT box unit output ends of confluxing with the photovoltaic combining inverter unit by wire to be connected, the anti-PID unit and institute
State photovoltaic combining inverter unit by cable to be connected, conflux box unit and the anti-PID units of the MPPT passes through EnOcean
Wireless connection.
3. a kind of anti-PID photovoltaic DC-to-AC converters device based on EnOcean technologies stated according to claim 2, it is characterized in that, it is described
The MPPT box units that conflux are connected on photovoltaic battery panel side, and the anti-PID unit is connected on the photovoltaic combining inverter cell side.
4. a kind of anti-PID photovoltaic DC-to-AC converters device based on EnOcean technologies according to claim 1, it is characterized in that, institute
State inversion module input and the MPPT box unit that confluxes to be connected, the inversion module output end is connected with power network, the Y/
Δ transformer module Δ side is connected with power network, and the Y/ Δs transformer module Y sides are connected with the rectification module AC, described
Y/ Δ transformer module Y side neutral points are connected with anti-PID unit, and the rectification module DC side and first power module are defeated
Enter end to be connected, first power module outlet is connected with the anti-PID unit, the control module, the control module
It is connected with the anti-PID unit, the inversion module.
5. a kind of anti-PID photovoltaic DC-to-AC converters device based on EnOcean technologies according to claim 1, it is characterized in that, institute
State EMC module inputs, the second source module input is connected with solar panel respectively, the second source module
Output end is connected with the DSP module, the DSP module respectively with the current sample module, the voltage sample module, institute
State the first EnOcean wireless communication modules and the power conversion modules output end is connected, the power conversion modules input
End is connected with the EMC modules.
6. a kind of anti-PID photovoltaic DC-to-AC converters device based on EnOcean technologies according to claim 1, it is characterized in that, institute
State MCU module and the both positive and negative polarity voltage sample module, the 2nd EnOcean wireless communication modules, the 232 communication mould
Block, the voltage regulating module are connected.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711013331.9A CN107612036A (en) | 2017-10-25 | 2017-10-25 | A kind of anti-PID photovoltaic DC-to-AC converters device based on EnOcean technologies |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711013331.9A CN107612036A (en) | 2017-10-25 | 2017-10-25 | A kind of anti-PID photovoltaic DC-to-AC converters device based on EnOcean technologies |
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| CN107612036A true CN107612036A (en) | 2018-01-19 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110221269A1 (en) * | 2007-05-14 | 2011-09-15 | Sma Solar Technology Ag | Power generation system comprising a plurality of inverters |
| CN103973217A (en) * | 2014-05-19 | 2014-08-06 | 无锡上能新能源有限公司 | Device for restraining PID effect of photovoltaic panel |
| CN104377732A (en) * | 2014-11-21 | 2015-02-25 | 南车株洲电力机车研究所有限公司 | DC bus distributed MPPT photovoltaic power generation system |
| CN106786750A (en) * | 2016-12-27 | 2017-05-31 | 阳光电源股份有限公司 | Photovoltaic parallel in system and photovoltaic combining inverter |
| CN106961118A (en) * | 2017-03-24 | 2017-07-18 | 江苏固德威电源科技股份有限公司 | Have the control device and control method of the suppression of PID effects and repair function concurrently |
| CN207283183U (en) * | 2017-10-25 | 2018-04-27 | 国电南京自动化股份有限公司 | A kind of anti-PID photovoltaic DC-to-AC converters device based on EnOcean technologies |
-
2017
- 2017-10-25 CN CN201711013331.9A patent/CN107612036A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110221269A1 (en) * | 2007-05-14 | 2011-09-15 | Sma Solar Technology Ag | Power generation system comprising a plurality of inverters |
| CN103973217A (en) * | 2014-05-19 | 2014-08-06 | 无锡上能新能源有限公司 | Device for restraining PID effect of photovoltaic panel |
| CN104377732A (en) * | 2014-11-21 | 2015-02-25 | 南车株洲电力机车研究所有限公司 | DC bus distributed MPPT photovoltaic power generation system |
| CN106786750A (en) * | 2016-12-27 | 2017-05-31 | 阳光电源股份有限公司 | Photovoltaic parallel in system and photovoltaic combining inverter |
| CN106961118A (en) * | 2017-03-24 | 2017-07-18 | 江苏固德威电源科技股份有限公司 | Have the control device and control method of the suppression of PID effects and repair function concurrently |
| CN207283183U (en) * | 2017-10-25 | 2018-04-27 | 国电南京自动化股份有限公司 | A kind of anti-PID photovoltaic DC-to-AC converters device based on EnOcean technologies |
Non-Patent Citations (1)
| Title |
|---|
| 曾捷: "抗PID效应的多模块电站型光伏的设计与实现", 《中国优秀硕士学位论文全文数据库工程科技II辑》, 15 February 2017 (2017-02-15), pages 8 - 62 * |
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