CN105186571B - A kind of intelligent low voltage ride through system of photovoltaic combining inverter - Google Patents
A kind of intelligent low voltage ride through system of photovoltaic combining inverter Download PDFInfo
- Publication number
- CN105186571B CN105186571B CN201510697139.0A CN201510697139A CN105186571B CN 105186571 B CN105186571 B CN 105186571B CN 201510697139 A CN201510697139 A CN 201510697139A CN 105186571 B CN105186571 B CN 105186571B
- Authority
- CN
- China
- Prior art keywords
- main
- inverter
- contactor
- circuit
- low voltage
- 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
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Abstract
The present invention relates to a kind of intelligent low voltage ride through system of photovoltaic combining inverter, including control device, main gird-connected inverter, subordinate inverter, filter, main A.C. contactor, adjustable transformer, intermediate relay, switch controlling device and voltage sensor, control device by intermediate relay respectively with main gird-connected inverter, subordinate inverter, filter, main A.C. contactor, switch controlling device is electrically connected, main gird-connected inverter, subordinate inverter is parallel with one another, and it is electrically connected respectively with photovoltaic power generation apparatus and adjustable transformer, adjustable transformer is connect by main A.C. contactor with power supply grid, filter is mounted on the position between adjustable transformer and main A.C. contactor.One aspect of the present invention effectively reaches while simplied system structure, improves system run all right, on the other hand effective to improve the operational efficiency of photovoltaic generating system, and improves the precision of operation control.
Description
Technical field
The present invention relates to a kind of photovoltaic power generation control systems, are exactly a kind of low electricity of the intelligence of photovoltaic combining inverter
Press ride through system.
Background technology
Photovoltaic generating system has obtained extremely wide application at present, and in actual use, passes through the rectifications such as inversion
Processing, effectively realizes photovoltaic generating system and is incorporated into the power networks with power supply grid, to greatly improve photovoltaic generating system
Usability, but find in the process of running, when power grid falls suddenly because voltage occur in failure and other reasons, photovoltaic generating system by
In the corresponding counter-measure of shortage, therefore often there is photovoltaic generating system obscission from power supply grid, so as to cause confession
Big ups and downs occur for the power supply environment of power grid, even cause power supply grid failure when serious and large area blackout is caused to be sent out
Raw, in order to solve this problem, the current main practice is to be equipped with low-voltage crossing sub-control system for photovoltaic generating system, to answer
To power supply grid Voltage Drop phenomenon, but current low-voltage crossing system is at runtime, is set often by power supplys such as ups powers
It is standby to be used as auxiliary power source, operation power and operation control signal are provided for low-voltage crossing system, although this mode can be certain
Degree meets the needs that use, but due to the power-supply devices volume such as ups power it is larger, result in the control of low-voltage crossing
System structure is larger, and construction and operating cost are higher, as well as the corresponding speed of operation control of the power-supply devices such as ups power
It spends relatively low, and is vulnerable to external environment interference, operation stability is poor, therefore also results in current low-voltage crossing control subsystem
The operation stability of system is insufficient, and for this present situation, there is an urgent need to develop a kind of invention low-voltage crossing control subsystems, to meet
The needs of actual use.
Invention content
It is passed through in view of the shortcomings of the prior art, the present invention provides a kind of intelligent low voltage of photovoltaic combining inverter
System, invention system framework framework is simple, integration degree is high for this, operation high degree of automation and construction and operating cost are low
It is honest and clean, it on the one hand effectively avoids the secondary power systems such as ups power from being constituted as the system of driving, is simplifying system to reach
While structure, system run all right is improved, it is on the other hand effective to improve the operational efficiency of photovoltaic generating system, and improve
The precision for running control, to greatly improve grid-connected reliability of operation and stability.
To achieve the goals above, the present invention is to realize by the following technical solutions：
A kind of intelligent low voltage ride through system of photovoltaic combining inverter, including control device, main gird-connected inverter, auxiliary
Inverter, filter, main A.C. contactor, adjustable transformer, intermediate relay, switch controlling device and voltage sensor,
Wherein control device by intermediate relay respectively with main gird-connected inverter, subordinate inverter, filter, main ac contactor
Device, switch controlling device electrical connection, main gird-connected inverter, subordinate inverter are parallel with one another, and respectively with photovoltaic power generation apparatus
And adjustable transformer electrical connection, adjustable transformer are connect by main A.C. contactor with power supply grid, voltage sensor difference
It is electrically connected with power supply grid and control device, filter is mounted on the position between adjustable transformer and main A.C. contactor
It sets, and connects with adjustable transformer and main A.C. contactor.
Further, the control device includes data processing circuit, communicating circuit, driving circuit and expansion I/O end
Mouth circuit, and driving circuit is electrical with data processing circuit, communicating circuit, expansion I/O port circuit and intermediate relay respectively
Connection.
Further, the I/O port circuits are separately electrically connected with manipulation keyboard and display device respectively.
Further, the communicating circuit includes wireless communication module and online communication module.
Further, the main gird-connected inverter and subordinate inverter include power bridge circuit, switch short device, control
Diode processed adjusts adjustable load circuits and control circuit, control circuit electrically connect with power bridge circuit, switch short device respectively
It connects, switch short device is separately electrically connected with control diode, adjusting adjustable load circuits.
Further, the switch short device at least two, and it is parallel with one another between each switch short device.
Further, the switch controlling device is igbt.
Present system framework framework is simple, integration degree is high, operation high degree of automation and construction and operating cost
It is cheap, it on the one hand effectively avoids the secondary power systems such as ups power from being constituted as the system of driving, is simplifying system to reach
While structure of uniting, system run all right is improved, it is on the other hand effective to improve the operational efficiency of photovoltaic generating system, and carry
The precision of height operation control, to greatly improve grid-connected reliability of operation and stability.
Description of the drawings
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments；
Fig. 1 is schematic structural view of the invention
Specific implementation mode
To make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, with reference to
Specific implementation mode, the present invention is further explained.
A kind of intelligent low voltage ride through system of photovoltaic combining inverter as described in Figure 1, including control device 1, master are simultaneously
Net inverter 2, subordinate inverter 3, filter 4, main A.C. contactor 5, adjustable transformer 6, intermediate relay 7, switch control
Device 8 and voltage sensor 9 processed, wherein control device 1 by intermediate relay 7 respectively with main gird-connected inverter 2, auxiliary inversion
Device 3, filter 4, main A.C. contactor 5, switch controlling device 8 are electrically connected, main gird-connected inverter 2,3 phase of subordinate inverter
It is mutually in parallel, and be electrically connected respectively with photovoltaic power generation apparatus 10 and adjustable transformer 6, adjustable transformer 6 passes through main ac contactor
Device 5 is connect with power supply grid 11, and voltage sensor 9 is electrically connected with power supply grid 11 and control device 1 respectively, filter 4
Position between adjustable transformer 6 and main A.C. contactor 5, and gone here and there with adjustable transformer 6 and main A.C. contactor 5
Connection.
In the present embodiment, the control device 1 includes data processing circuit, communicating circuit, driving circuit and expansion I/O
Port circuit, and driving circuit is electric with data processing circuit, communicating circuit, expansion I/O port circuit and intermediate relay respectively
Gas connects.
In the present embodiment, the I/O port circuits are separately electrically connected with manipulation keyboard and display device respectively.
In the present embodiment, the communicating circuit includes wireless communication module and online communication module.
In the present embodiment, the main gird-connected inverter 2 and subordinate inverter 3 include power bridge circuit, switch short
Device, control diode adjust adjustable load circuits and control circuit, control circuit respectively with power bridge circuit, switch short device
Electrical connection, switch short device are separately electrically connected with control diode, adjusting adjustable load circuits.
In the present embodiment, the switch short device 8 at least two, and it is parallel with one another between each switch short device.
In the present embodiment, the switch controlling device 8 is igbt.
Present system framework framework is simple, integration degree is high, operation high degree of automation and construction and operating cost
It is cheap, it on the one hand effectively avoids the secondary power systems such as ups power from being constituted as the system of driving, is simplifying system to reach
While structure of uniting, system run all right is improved, it is on the other hand effective to improve the operational efficiency of photovoltaic generating system, and carry
The precision of height operation control, to greatly improve grid-connected reliability of operation and stability.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (6)
1. a kind of intelligent low voltage ride through system of photovoltaic combining inverter, which is characterized in that the photovoltaic combining inverter
Intelligent low voltage ride through system include control device, main gird-connected inverter, subordinate inverter, filter, main A.C. contactor,
Adjustable transformer, intermediate relay, switch controlling device and voltage sensor, wherein the control device passes through intermediate relay
Device is electrically connected with main gird-connected inverter, subordinate inverter, filter, main A.C. contactor, switch controlling device respectively, institute
The main gird-connected inverter stated, subordinate inverter are parallel with one another, and are electrically connected respectively with photovoltaic power generation apparatus and adjustable transformer,
The adjustable transformer is connect by main A.C. contactor with power supply grid, the voltage sensor respectively with power supply grid
It being electrically connected with control device, the filter is mounted on the position between adjustable transformer and main A.C. contactor, and
It connects with adjustable transformer and main A.C. contactor, the main gird-connected inverter and subordinate inverter include power bridge electricity
Road, control diode, adjusts adjustable load circuits and control circuit at switch short device, control circuit respectively with power bridge circuit,
Switch short device is electrically connected, and switch short device is separately electrically connected with control diode, adjusting adjustable load circuits.
2. a kind of intelligent low voltage ride through system of photovoltaic combining inverter according to claim 1, which is characterized in that institute
The control device stated includes data processing circuit, communicating circuit, driving circuit and expansion I/O port circuit, and driving circuit divides
It is not electrically connected with data processing circuit, communicating circuit, expansion I/O port circuit and intermediate relay.
3. a kind of intelligent low voltage ride through system of photovoltaic combining inverter according to claim 2, which is characterized in that institute
The I/O port circuits stated separately are electrically connected with manipulation keyboard and display device respectively.
4. a kind of intelligent low voltage ride through system of photovoltaic combining inverter according to claim 2, which is characterized in that institute
The communicating circuit stated includes wireless communication module and online communication module.
5. a kind of intelligent low voltage ride through system of photovoltaic combining inverter according to claim 1, which is characterized in that institute
The switch short device at least two stated, and it is parallel with one another between each switch short device.
6. a kind of intelligent low voltage ride through system of photovoltaic combining inverter according to claim 1, which is characterized in that institute
The switch controlling device stated is igbt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510697139.0A CN105186571B (en) | 2015-10-23 | 2015-10-23 | A kind of intelligent low voltage ride through system of photovoltaic combining inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510697139.0A CN105186571B (en) | 2015-10-23 | 2015-10-23 | A kind of intelligent low voltage ride through system of photovoltaic combining inverter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105186571A CN105186571A (en) | 2015-12-23 |
| CN105186571B true CN105186571B (en) | 2018-08-24 |
Family
ID=54908493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510697139.0A Active CN105186571B (en) | 2015-10-23 | 2015-10-23 | A kind of intelligent low voltage ride through system of photovoltaic combining inverter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105186571B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202749834U (en) * | 2012-06-21 | 2013-02-20 | 天宝电子（惠州）有限公司 | Low-voltage ride through device of photovoltaic grid-connected inverter |
| CN103250319A (en) * | 2010-10-12 | 2013-08-14 | 施耐德电气太阳能逆变器美国股份有限公司 | Photovoltaic inverter with control for performing low voltage ride through |
| CN205029352U (en) * | 2015-10-23 | 2016-02-10 | 苏州华安普电力科技股份有限公司 | Photovoltaic grid -connected inverter's intelligent low voltage ride through system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1713155B1 (en) * | 2005-04-12 | 2012-10-17 | DET International Holding Limited | Power supply arrangement |
-
2015
- 2015-10-23 CN CN201510697139.0A patent/CN105186571B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103250319A (en) * | 2010-10-12 | 2013-08-14 | 施耐德电气太阳能逆变器美国股份有限公司 | Photovoltaic inverter with control for performing low voltage ride through |
| CN202749834U (en) * | 2012-06-21 | 2013-02-20 | 天宝电子（惠州）有限公司 | Low-voltage ride through device of photovoltaic grid-connected inverter |
| CN205029352U (en) * | 2015-10-23 | 2016-02-10 | 苏州华安普电力科技股份有限公司 | Photovoltaic grid -connected inverter's intelligent low voltage ride through system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105186571A (en) | 2015-12-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105391097A (en) | AC and DC hybrid micro grid coordinated control system | |
| CN202906494U (en) | Grid-connected photovoltaic power system capable of dynamically switching inversion units | |
| US20180145585A1 (en) | Hybrid transformation system based on three-phase pwm rectifier and multi-unit uncontrolled rectifier and control method thereof | |
| CN105305493B (en) | A kind of light for interconnected operation stores up independent micro-capacitance sensor topology | |
| CN105186571B (en) | A kind of intelligent low voltage ride through system of photovoltaic combining inverter | |
| CN104767218A (en) | Direct-current power flow controller | |
| CN205029352U (en) | Photovoltaic grid -connected inverter's intelligent low voltage ride through system | |
| CN202016401U (en) | Circuit structure unit for auxiliary system of magnetic suspension train | |
| CN203562783U (en) | High voltage SVG system with chain type composition | |
| CN102541248A (en) | Method for dynamically adjusting power supply efficiency in cloud computing industry by means of centralization | |
| CN206117315U (en) | Direct current breaker and be used for supply circuit of direct current breaker power module | |
| CN104377702A (en) | Reversible adjustment dynamic voltage adjuster | |
| CN201616703U (en) | High-voltage frequency converter control power supply circuit uninterruptible power supplying device | |
| CN203859692U (en) | Power supply device and N line lack protection circuit thereof | |
| CN203554060U (en) | AC/DC power supply screen power supply device and system | |
| RU2015126781A (en) | REDUCING PROBLEMS RELATED TO QUALITY OF ELECTRICITY BY HYBRID NETWORK | |
| CN203745937U (en) | Device for distributing currents of multipath power sources at will | |
| CN209896453U (en) | High-power supply cabinet for supplying power to electron accelerator | |
| CN202888949U (en) | Double-power power supply device of active power transducer of power generator | |
| CN202888951U (en) | Emergency power supply device reconstructed through frequency converter | |
| CN201690371U (en) | Inverter | |
| CN204886751U (en) | A electronic switching variable frequency power supply system for electromagnetic stirring device | |
| CN203562785U (en) | Reactive power regulation system of distributed parallel connection structure | |
| CN103872980B (en) | A kind of method of the real-time monitoring collector-shoe gear based on preposition allotment | |
| CN203301224U (en) | Control power supply device of voltage-type three-level frequency converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |