CN109802427A - Photovoltaic power generation grid-connecting control system and control method - Google Patents
Photovoltaic power generation grid-connecting control system and control method Download PDFInfo
- Publication number
- CN109802427A CN109802427A CN201811402713.5A CN201811402713A CN109802427A CN 109802427 A CN109802427 A CN 109802427A CN 201811402713 A CN201811402713 A CN 201811402713A CN 109802427 A CN109802427 A CN 109802427A
- Authority
- CN
- China
- Prior art keywords
- phase
- power generation
- micro
- photovoltaic power
- bus
- 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.)
- Pending
Links
- 238000010248 power generation Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000001514 detection method Methods 0.000 claims description 25
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims description 2
- 240000002853 Nelumbo nucifera Species 0.000 claims description 2
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052802 copper Inorganic materials 0.000 abstract description 2
- 239000010949 copper Substances 0.000 abstract description 2
- 229910052742 iron Inorganic materials 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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
-
- 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
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
- Control Of Electrical Variables (AREA)
Abstract
The present invention relates to the control system of photovoltaic power generation, specifically a kind of photovoltaic power generation grid-connecting control system and control method.The system includes the three-phase four-wire system utility network with three-phase phase line bus and a phase zero curve bus, further includes having at least one using solar energy or other new energy as the micro-capacitance sensor of power generation energy resource, and the micro-capacitance sensor has a phase phase line bus and a phase zero curve bus；The phase line bus of the zero curve of the zero curve bus access utility network of micro-capacitance sensor, micro-capacitance sensor can selectively access the phase in three-phase phase line bus by a selection switch.The present invention is by carrying out real-time monitoring to network load, determine the phase line of micro-grid connection, it can guarantee the three-phase equilibrium of utility network to the maximum extent, improve the handy rate of micro-capacitance sensor power generation, reduce the output of utility network electric current, reduce the distribution station transformer three characteristics of the middle term it is uneven and caused by iron loss and copper loss, save the energy.
Description
Technical field
The present invention relates to the control system of photovoltaic power generation, specifically a kind of photovoltaic power generation grid-connecting control system and controlling party
Method.
Background technique
Photovoltaic generating system for small-scale photovoltaic power generation, such as unit of family, most families are because by room
The limitation of top area, be all with it is single-phase it is access grid-connected based on, although power department access when fully taken into account power grid
Balance, but due to photovoltaic power generation and the uncertainty of power load, the three-phase load that will lead to power grid is more uneven, sternly
The loss of power supply safety and electric energy is affected again.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of handy rates that can be improved photovoltaic micro power generation, subtract
The output of few power network current promotes the photovoltaic power generation grid-connecting control system and control method of the balance of power grid three-phase output electric current.
Photovoltaic power generation grid-connecting control system of the invention includes the three-phase with three-phase phase line bus and a phase zero curve bus
Four-wire system utility network further includes having at least one using solar energy or other new energy as the micro-capacitance sensor of power generation energy resource, described micro-
Power grid has a phase phase line bus and a phase zero curve bus；The zero curve of the zero curve bus access utility network of micro-capacitance sensor, micro-capacitance sensor
Phase line bus can selectively access a phase in three-phase phase line bus by a selection switch.
It further, include the load detection device for being able to detect power load in each phase line of utility network in system,
The detection signal output end of load detection device is connect with a control module, and the control module can send control instruction simultaneously
Control the switching action of the selection switch.
Further, the load detection device includes the voltage sensing device or energy for being able to detect each phase voltage
Enough detect the current sensor device of each phase current.
Photovoltaic power generation grid-connecting control method of the invention is based on above-mentioned photovoltaic power generation grid-connecting control system, grid-connected step
It is: each phase voltage of utility network or current data that are detected by load detection device is acquired by control module, according to detection data
Judge peak load phase, while being switched to selection and issuing control instruction, the maximum of the phase line access utility network of micro-capacitance sensor is born
Lotus phase.
Preferably, the load detection device includes the voltage sensing device for being able to detect each phase voltage, and control module will
The minimum phase of voltage is judged as peak load phase.
Preferably, the load detection device includes the current sensor device for being able to detect each phase current, and control module will
Electric current maximum is mutually judged as peak load phase.
The present invention, can be to the maximum extent by determining the phase line of micro-grid connection to network load progress real-time monitoring
The three-phase equilibrium for guaranteeing utility network improves the handy rate of micro-capacitance sensor power generation, reduces the output of utility network electric current, reduces
The distribution station transformer three characteristics of the middle term it is uneven and caused by iron loss and copper loss, save the energy.
Detailed description of the invention
Fig. 1 is the systematic schematic diagram of the embodiment of the present invention.
Specific embodiment
As shown, the photovoltaic power generation grid-connecting control system includes having one phase zero of A, B, C phase three-phase phase line bus and N phase
The three-phase four-wire system utility network of line bus further includes having at least one using solar energy or other new energy as the micro- of power generation energy resource
Power grid 1, micro-capacitance sensor have a phase phase line bus and a phase zero curve bus；The zero of the zero curve bus access utility network of micro-capacitance sensor
The phase line bus of line, micro-capacitance sensor can selectively access the phase in three-phase phase line bus by a selection switch 2.In system
It further include having the load detection device 3 for being able to detect power load in each phase line of utility network, the detection letter of load detection device
Number output end is connect with a control module 4, and the control module can send control instruction and control the selection switch 2
Switching action.
In above-mentioned photovoltaic power generation grid-connecting control system operational process, grid-connected step is: being acquired by control module by load
Each phase voltage of utility network or current data of detection device detection judge peak load phase according to detection data, while to choosing
It selects switch and issues control instruction, by the peak load phase of the phase line access utility network of micro-capacitance sensor.
Load detection device may include the voltage sensing device for being able to detect each phase voltage, and control module is minimum by voltage
Mutually it is judged as peak load phase.
Load detection device also may include the current sensor device for being able to detect each phase current, control module by electric current most
Mutually it is judged as peak load phase greatly.
Claims (7)
1. a kind of photovoltaic power generation grid-connecting control system, including the three-phase four-wire system with three-phase phase line bus and a phase zero curve bus
Utility network further includes having at least one micro-capacitance sensor, it is characterized in that: the micro-capacitance sensor has a phase phase line bus and a phase zero curve
Bus；The phase line bus of the zero curve of the zero curve bus access utility network of micro-capacitance sensor, micro-capacitance sensor can by a selection switch
Selectively access the phase in three-phase phase line bus.
2. photovoltaic power generation grid-connecting control system according to claim 1, it is characterized in that: including to be able to detect public affairs in system
With the load detection device of power load in each phase line of power grid, the detection signal output end of load detection device and a control mould
Block connection, the control module can send control instruction and control the switching action of the selection switch.
3. photovoltaic power generation grid-connecting control system according to claim 1, it is characterized in that: the load detection device includes energy
Enough detect the voltage sensing device of each phase voltage.
4. photovoltaic power generation grid-connecting control system according to claim 1, it is characterized in that: the load detection device includes energy
Enough enough detect the current sensor device of each phase current.
5. a kind of photovoltaic power generation grid-connecting control method using photovoltaic power generation grid-connecting control system described in claim 2, feature
It is: each phase voltage of utility network or current data that are detected by load detection device is acquired by control module, according to detection data
Judge peak load phase, while being switched to selection and issuing control instruction, the maximum of the phase line access utility network of micro-capacitance sensor is born
Lotus phase.
6. photovoltaic power generation grid-connecting control method according to claim 5, it is characterized in that: the load detection device includes energy
The voltage sensing device of each phase voltage is enough detected, the minimum phase of voltage is judged as peak load phase by control module.
7. photovoltaic power generation grid-connecting control method according to claim 5, it is characterized in that: the load detection device includes energy
The current sensor device of each phase current is enough detected, electric current maximum is mutually judged as peak load phase by control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811402713.5A CN109802427A (en) | 2018-11-23 | 2018-11-23 | Photovoltaic power generation grid-connecting control system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811402713.5A CN109802427A (en) | 2018-11-23 | 2018-11-23 | Photovoltaic power generation grid-connecting control system and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109802427A true CN109802427A (en) | 2019-05-24 |
Family
ID=66556370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811402713.5A Pending CN109802427A (en) | 2018-11-23 | 2018-11-23 | Photovoltaic power generation grid-connecting control system and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109802427A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110768277A (en) * | 2019-10-21 | 2020-02-07 | 广州航海学院 | Three-phase imbalance adjusting system based on biogas power generation and control method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103997051A (en) * | 2014-06-10 | 2014-08-20 | 长沙高升电子电器科技有限公司 | Online automatic power distribution method and device |
| CN105116809A (en) * | 2015-09-10 | 2015-12-02 | 国电南京自动化股份有限公司 | User customizable intelligent micro grid load control system and method |
| CN106374511A (en) * | 2016-10-09 | 2017-02-01 | 国网江苏省电力公司扬州供电公司 | Three-phase load balance control policy based on user load real-time measurement, and intelligent switching system |
| CN107591825A (en) * | 2016-07-07 | 2018-01-16 | 无锡美凯能源科技有限公司 | One kind compensation unbalanced micro-capacitance sensor device and method of three phase network |
| CN107834576A (en) * | 2017-06-14 | 2018-03-23 | 国网山东省电力公司枣庄供电公司 | A kind of distribution three-phase load unbalance has automatically carries adjusting means and control method |
| CN207265677U (en) * | 2017-09-26 | 2018-04-20 | 沈阳工程学院 | A kind of alternating current-direct current mixing micro-capacitance sensor system of varistructure |
| CN209419235U (en) * | 2018-11-23 | 2019-09-20 | 赵中奇 | Photovoltaic power generation grid-connecting control system |
-
2018
- 2018-11-23 CN CN201811402713.5A patent/CN109802427A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103997051A (en) * | 2014-06-10 | 2014-08-20 | 长沙高升电子电器科技有限公司 | Online automatic power distribution method and device |
| CN105116809A (en) * | 2015-09-10 | 2015-12-02 | 国电南京自动化股份有限公司 | User customizable intelligent micro grid load control system and method |
| CN107591825A (en) * | 2016-07-07 | 2018-01-16 | 无锡美凯能源科技有限公司 | One kind compensation unbalanced micro-capacitance sensor device and method of three phase network |
| CN106374511A (en) * | 2016-10-09 | 2017-02-01 | 国网江苏省电力公司扬州供电公司 | Three-phase load balance control policy based on user load real-time measurement, and intelligent switching system |
| CN107834576A (en) * | 2017-06-14 | 2018-03-23 | 国网山东省电力公司枣庄供电公司 | A kind of distribution three-phase load unbalance has automatically carries adjusting means and control method |
| CN207265677U (en) * | 2017-09-26 | 2018-04-20 | 沈阳工程学院 | A kind of alternating current-direct current mixing micro-capacitance sensor system of varistructure |
| CN209419235U (en) * | 2018-11-23 | 2019-09-20 | 赵中奇 | Photovoltaic power generation grid-connecting control system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110768277A (en) * | 2019-10-21 | 2020-02-07 | 广州航海学院 | Three-phase imbalance adjusting system based on biogas power generation and control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105720595B (en) | A kind of three-phase load unbalance adjusting apparatus | |
| CN105846453A (en) | Method for treating three-phase load imbalance of low-voltage distribution network | |
| CN101944746B (en) | Island detection method, device and system of photovoltaic grid-connected power generating system | |
| CN106656021B (en) | A kind of anti-PID header boxs system and its implementation | |
| CN101950976B (en) | Grid-connected operation method of grid-connected type photovoltaic inverter | |
| CN105378577B (en) | Power inverter, electric power management method and electric power coversion system | |
| CN105375498A (en) | Three-phase phase-change switch device | |
| CN103267893B (en) | Balanced distribution intelligent electric meter | |
| CN103997051B (en) | On-line automatic distribution method and device | |
| CN104868495B (en) | It is applied to the input source intelligent identification Method of new forms of energy mixing inverter | |
| CN104779640B (en) | Preventing distributed electricity generation system pours in down a chimney the system and control method of electrical power to power network | |
| CN108767901A (en) | A kind of three-phase grid-connected inverter anti-backflow device and control method | |
| CN209419235U (en) | Photovoltaic power generation grid-connecting control system | |
| CN109802427A (en) | Photovoltaic power generation grid-connecting control system and control method | |
| CN103746377A (en) | Integral-mapping-based voltage and reactive power sensitivity detection method | |
| CN102684136A (en) | Zero-adverse-current predicting method for photovoltaic microgrid common-grid application system | |
| CN108429243A (en) | Disconnection device and hydroelectric system | |
| CN205583706U (en) | Three -phase unbalanced load adjusting device | |
| CN105048627A (en) | System and method for controlling energy saving in photovoltaic power station | |
| CN104682413A (en) | System and method for anti-countercurrent control based on ARM (advanced RISC machine) architecture | |
| CN209217729U (en) | A kind of three-phase load unbalance regulating system | |
| Syamsuddin et al. | Implementation of TMS320F2812 in islanding detection for Photovoltaic Grid Connected Inverter | |
| CN201893550U (en) | Anti-islanding protection system for photovoltaic inverter | |
| CN207051354U (en) | A kind of signal source device | |
| CN105227127B (en) | The solar energy power generating control system and method for a kind of plug and play |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190524 |
|
| RJ01 | Rejection of invention patent application after publication |