CN205753657U - A kind of many stations based on LAN photovoltaic generation micro-grid system load-shedding equipment - Google Patents
A kind of many stations based on LAN photovoltaic generation micro-grid system load-shedding equipment Download PDFInfo
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- CN205753657U CN205753657U CN201620599666.8U CN201620599666U CN205753657U CN 205753657 U CN205753657 U CN 205753657U CN 201620599666 U CN201620599666 U CN 201620599666U CN 205753657 U CN205753657 U CN 205753657U
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- slave station
- lan
- load
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- processor
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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
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
- Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
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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
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/222—Demand response systems, e.g. load shedding, peak shaving
Abstract
This utility model discloses a kind of many stations based on LAN photovoltaic generation micro-grid system load-shedding equipment, including slave station data acquisition unit, the electric parameters on Real-time Collection bus, it is carried out protective number and calculates acquisition calculation result data and upload；The main website control system being connected with slave station data acquisition unit, the data uploaded according to slave station data acquisition unit carry out calculating and analyze acquisition result of calculation, and issue control command according to result of calculation, the slave station being connected with main website control system controls device, receive the control command that main website control system is assigned, and the customer charge group being connected with slave station control device according to control command pair operates.This utility model is the quantity of the load shedding protective device of the generating micro-grid system of multiple photovoltaic stations composition in can reducing LAN; cancel the protection processor unit system of each website; in reduction LAN, the quantity of the protection device of the single repetition of micro-grid power generation system, reduces comprehensive protector cost.
Description
Technical field
This utility model belong to join in LAN under novel microgrid, transformer substation system multi-site comprehensive power system off-load protect
Protection unit field, is more particularly to the photovoltaic plant in a kind of LAN region because of fault or overladen load shedding protective device.
Background technology
Frequency is one of important indicator weighing the quality of power supply, and in the case of system is properly functioning, frequency is to maintain one
Steady-state value amount.For photovoltaic plant, typically this locality photovoltaic plant and system electrical network are linked together by electric wiring,
Jointly meet power supply to user, it then follows the principle of " generating power for their own use, surplus is surfed the Net ".And system electrical network in some cases can be unavoidable
Break down, such as voltage failure and frequency anomaly etc..Now the side of network system can carry out protection act, tripping site and opens
Closing, be the most only left micro-grid system and running, photovoltaic system Independent Power Generation work this moment, the energy-storage system in microgrid receives photovoltaic
Electrification energy storage.Now only have microgrid continuous firing, if customer charge group is overweight, system frequency or voltage can be caused drastically
Declining, severe patient will cause the loss that can not save, such as:
(1) production enterprise is caused the decline of serious product quality by the frequency change of power system.Such as, weaving work
All can there are substandard products because the frequency of power system changes in industry, paper industry etc..Additionally, motor also can be caused automatically to protect
Device and relay protection device action.
(2) work of electronic equipment is affected.Particularly, the critical facility such as radar, electronic computer is at power system frequency
Will be unable to time too low run.
(3) frequency of power system changes for power system self and user, is also breakneck.System frequency
Run under too high or too low state, can generating equipment and user be caused badly damaged, cause electric network active more to lack,
Cause vicious cycle.
In this case differing according to customer charge group, needs cut-out insignificant class user load group, make be
System frequency tends towards stability normal value, the most also cut-off parts faulty line, in order to the work such as the trouble shooting of network system.
Under normal circumstances, each photovoltaic generation station carries out generating operation, and by the storage of electrical power storage to LAN system
In energy mechanism, and electrical network main with power system is connected, and goes into the microgrid of photovoltaic generating system more than.
Some frequency load shedding protective devices would generally be equipped with in general micro-grid system, by gathering in micro-grid system be
No have main electrical breakdown, if main electrical breakdown, then carries out load excision work.
This mode needs install more signal cable at the scene and gather action circuit, and wiring is complicated, construction debugging
Cycle is long, relatively costly.And in the case of having multiple photovoltaic plant and multiple energy storage device row to become LAN, need
The load-shedding equipment that multiple stage is same, causes protection device to repeat, and mode of connection complicated situation.And also it is for single station
The protection of point, lacks the intrasystem combination property of local area network and accounts for.In LAN, the compatibility of electricity generation system is pessimistic.
Along with the fast lifting of computer hardware performance, being greatly improved of network capacity, the reliability of hardware net technology, double
The application of net, hot standby technology makes application based on LAN system can meet the application that originally must be completed by self-contained unit
Technology requirement.
Utility model content
In order to solve said one or multiple technical problems, this utility model provide a kind of many light based on LAN
Volt generating micro-grid system load-shedding equipment.
The technical solution of the utility model is as follows:
The load-shedding equipment of many stations based on LAN photovoltaic generation micro-grid system, including
Slave station data acquisition unit, the electric parameters on Real-time Collection bus, the electric parameters gathered is carried out protective number
Calculate and obtain calculation result data, and calculation result data is uploaded；
The main website control system being connected with described slave station data acquisition unit, uploads according to described slave station data acquisition unit
Calculation result data carry out logical calculated and analyze and obtain result of calculation, and issue control command according to result of calculation,
The slave station being connected with described main website control system controls device, receives the control command that main website control system is assigned,
And control, according to control command pair and described slave station, the customer charge group that device is connected and operate.
It has the beneficial effect that when there being principal voltage dead electricity situation to occur, or LAN overload, the slave station in LAN
Control the device control command according to the main website control system received, automatic cut-out load, and tripping to preset
And site switch so that micro-grid system frequency no longer declines, until returning to normal table value, protection power equipment peace
Row for the national games.
This utility model is the load shedding protective device of the generating micro-grid system of multiple photovoltaic stations composition in can reducing LAN
Quantity, cancel the protection processor unit system of each website, reduce the protection of the single repetition of micro-grid power generation system in LAN
The quantity of device, reduces comprehensive protector cost.This utility model can be directly embedded into existing combination type multi-site simultaneously
Photovoltaic generating system in apply, easy for installation.
In some embodiments, described slave station data acquisition unit is connected by fiber optic local area network and main website control system
Connecing, described main website control system controls device by fiber optic local area network and slave station and connects.
It has the beneficial effect that slave station controls device and main website control system and carries out data interaction by fiber optic local area network 4.
In some embodiments, described main website control system is provided with master station processor, and described master station processor passes through light
Fine LAN controls device with slave station data acquisition unit and slave station respectively and connects, and described master station processor is PowerPC process
Device.
It has the beneficial effect that Power PC Processor is connected to slave station by fiber optic communications devices and controls the optical fiber receipts of device
Send out on device, then be connected to the network interface from station processor from fiber optical transceiver.Power PC Processor is to slave station data acquisition packaging
Put and gather the data uploaded and carry out logical judgment and the priority output that sets according to user in advance performs order to slave station control
In device, slave station controls device and performs cutting of chopper disconnection action or grid-connected trip switch action or intrasystem protection circuit
On-load switch action.
In some embodiments, described slave station data acquisition unit is provided with from station processor.
In some embodiments, described from station processor be ARM core the dual core processor depositing DSP core.
It has the beneficial effect that DSP exchanges data volume for the busbar voltage electric energy gathering on AD7656 and frequency etc.,
Protection value is calculated according to Fourier algorithm, by the exchange data that calculate by internal shared interior of double-core CPU on DSP core
The mode of depositing is delivered in ARM core, and calculating data are delivered to main website server system by fiber optic Ethernet oral instructions by ARM core.
In some embodiments, described ARM core connects liquid crystal display and keyboard.
It has the beneficial effect that the liquid crystal display data message for display system；User can be entered by external keyboard
The input of row data, definite value parameter locally located, and local event of failure information inspection；Slave station controls device and main website control
System processed carries out data interaction by communicator.
In some embodiments, described DSP core and slave station data acquisition unit connect.
It has the beneficial effect that DSP core can carry out the data sampling of 128 to every cycle, and sampling precision is higher, calculates
Harmonic data precision high, according to the harmonic data calculated, analyze the electric energy intelligence of this photovoltaic generation station, possess one
The function of fixed electric energy quality monitoring, it is not necessary to be reconfigured at a quality of power supply device, has accomplished system integration and has unitized, fall
The low cost of total system.
In some embodiments, there is self-checking unit described connection from station processor.
In some embodiments, described slave station controls device is FPGA processor.
It has the beneficial effect that main website control system is assigned control command and to FPGA processor and controlled by FPGA processor defeated
Go out.The inside Fast Logical gate array of FPGA processor has a strong interference immunity, fast operation, and to outputing the control of signal
Time is extremely short, and other conventional types CPU that compares needs processor instruction fetch, and fetching data, it is multiple to perform to instruct the consumption of this process again
The machine instruction cycle, therefore FPG A processor occupies certain advantage in quick control；In like manner for excision load, also
Can guarantee that the frequency of system continues to decline, at short notice, load is excised, quickly micro-grid system frequency is returned to normally
Stationary value, it is ensured that system reliable and stable.For opening the detection into signal, FPGA processor is likewise supplied with advantage, and remote signalling becomes
Position signal is filtered processing via FPGA processor, and resolution time can reach nanosecond rank, and reaction scene is opened the most really
The time attribute of incoming event, reaction is opened the sequencing into displacement, is carried out, for the later stage, the foundation that accident analysis provides certain.
Accompanying drawing explanation
Fig. 1 is the off-load dress of many stations based on LAN photovoltaic generation micro-grid system of this utility model one embodiment
The schematic diagram put；
Fig. 2 is the off-load dress of many stations based on LAN photovoltaic generation micro-grid system of this utility model one embodiment
The slave station data acquisition unit put and slave station control the connection diagram of device.
The title of corresponding component represented by numeral in figure:
1. slave station data acquisition unit, 11. liquid crystal displays, 12. keyboards, 13. self-checking units, 2. main website control system,
3. slave station controls device, 31.FPGA processor, 4. fiber optic local area network, 5. public electric wire net, 6. customer charge group.
Detailed description of the invention
As shown in Figure 1-2, this utility model discloses subtracting of a kind of many stations photovoltaic generation micro-grid system based on LAN
Carrying and put, including slave station data acquisition unit 1, the electric parameters on the bus of Real-time Collection public electric wire net 5, to the electricity gathered
Tolerance carries out protective number and calculates acquisition calculation result data, and calculation result data is uploaded.With slave station data acquisition unit 1 even
The main website control system 2 connect, the calculation result data uploaded according to slave station data acquisition unit 1 carries out logical calculated and analysis obtains
Obtain result of calculation, and issue control command according to result of calculation.The slave station being connected with main website control system 2 controls device 3, receives
The control command that main website control system 2 is assigned, and control, with slave station, the customer charge group 6 that device 3 is connected according to control command pair
Operate.In actual use, main website control system 2 can control device 3 even with many group slave station data acquisition units 1 and slave station
Connect.
When there being principal voltage dead electricity situation to occur, or LAN overload, the slave station in LAN controls device 3 basis
The control command of the main website control system received, automatic cut-out load, and tripping is set in advance and site switch,
So that micro-grid system frequency no longer declines, until returning to normal table value, the safe operation of protection power equipment.
This utility model is the load shedding protective device of the generating micro-grid system of multiple photovoltaic stations composition in can reducing LAN
Quantity, cancel the protection processor unit system of each website, reduce the protection of the single repetition of micro-grid power generation system in LAN
The quantity of device, reduces comprehensive protector cost.This utility model can be directly embedded into existing combination type multi-site simultaneously
Photovoltaic generating system in apply, easy for installation.
In the present embodiment, slave station data acquisition unit 1 is connected by fiber optic local area network 4 and main website control system 2, main
Station control system 2 controls device 3 by fiber optic local area network 4 and slave station and connects.Slave station controls device 3 and main website control system 2 is led to
Cross fiber optic local area network 4 and carry out data interaction.Main website control system 2 is provided with master station processor.Master station processor passes through optical fiber local
Net 4 and slave station control device 3 and connect.Master station processor is Power PC Processor.Power PC Processor passes through fiber optic local area network 4
It is connected to slave station control on the fiber optical transceiver of device 3, then is connected to the network interface from station processor from fiber optical transceiver.
Power PC Processor gathers the data uploaded to slave station data acquisition unit 1 to carry out logical judgment and sets according to user in advance
Priority output perform order and control in device 3 to slave station, slave station controls device 3 and performs chopper disconnection action or grid-connected jumping
The cutting load switch motion of lock switch motion or intrasystem protection circuit.Slave station data acquisition unit 1 is provided with from station processor
With, connected by fiber optic local area network 4 and main website control system 2 from station processor.It is ARM core from station processor and deposits DSP core
Dual core processor 14, selects the OMAPL138 industry rank of TI company, uses the data of shared drive between DSP core and ARM core
Bus read-write mode carries out data interaction.DSP is for gathering the exchange data such as the busbar voltage electric energy on AD7656 and frequency
Amount, calculates protection value according to Fourier algorithm on DSP core, the exchange data calculated is passed through within double-core CPU
Shared drive mode is delivered in ARM core, and calculating data are delivered to main website by fiber optic Ethernet oral instructions and controlled system by ARM core
System.ARM core connects liquid crystal display 11 and keyboard 12.Liquid crystal display 11 is for the data message of display system；User can
The input of data is carried out, definite value parameter locally located, and local event of failure information inspection by external keyboard 12.
DSP core and slave station data acquisition unit 1 connect.DSP core can carry out the data sampling of 128 to every cycle, and sampling precision is higher,
The harmonic data precision calculated is high, according to the harmonic data calculated, analyzes the electric energy intelligence of this photovoltaic generation station
Can, possess the function of certain electric energy quality monitoring, it is not necessary to be reconfigured at a quality of power supply device, accomplished system integration and
Unitized, reduce the cost of total system.Connect from station processor and have self-checking unit 13.Slave station control device 3 for FPGA at
Reason device 31, selects the cyclone IV series EP4CE22I7 technical grade chip of altera company.Main website control system 2 assigns control
System order controls output to FPGA processor 31 and by FPGA processor 31.The inside Fast Logical gate array of FPGA processor 31
There is strong interference immunity, fast operation, and extremely short to the control time outputing signal, compare other conventional types CPU needs
Processor instruction fetch, fetches data and performs to instruct this process consumption multiple machine instruction cycles again, therefore FPGA in quick control
Processor occupies certain advantage；In like manner for excision load, also can guarantee that the frequency of system continues to decline, in the short time
In, load is excised, quickly micro-grid system frequency is returned to normal table value, it is ensured that system reliable and stable.For
Opening the detection into signal, FPGA processor 3131 is likewise supplied with advantage, and remote signalling displacement signal is filtered via FPGA processor 31
Ripple processes, and resolution time can reach nanosecond rank, and the time attribute of incoming event is opened at reaction scene the most really, and reaction is opened into change
The sequencing of position, carries out, for the later stage, the foundation that accident analysis provides certain.
The above is embodiments more of the present utility model, and this utility model is not made any pro forma limit
System, any simple modification, equivalent variations and modification above example made according to technical spirit of the present utility model, the most still
Belong in the range of technical solutions of the utility model.
Claims (9)
1. the load-shedding equipment of many stations based on LAN photovoltaic generation micro-grid system, it is characterised in that include
Slave station data acquisition unit, the electric parameters on Real-time Collection bus, the electric parameters gathered is carried out protective number calculating
Obtain calculation result data, and calculation result data is uploaded；
The main website control system being connected with described slave station data acquisition unit, the meter uploaded according to described slave station data acquisition unit
Calculate result data carry out logical calculated and analyze acquisition result of calculation, and issue control command according to result of calculation；
The slave station being connected with described main website control system controls device, receives the control command that main website control system is assigned, and root
The customer charge group being connected with described slave station control device according to control command pair operates.
The load-shedding equipment of many stations based on LAN the most according to claim 1 photovoltaic generation micro-grid system, its feature
Being, described slave station data acquisition unit is connected by fiber optic local area network and main website control system, and described main website control system is led to
Cross fiber optic local area network and slave station controls device and connects.
The load-shedding equipment of many stations based on LAN the most according to claim 1 photovoltaic generation micro-grid system, its feature
Being, described main website control system is provided with master station processor, described master station processor by fiber optic local area network respectively with slave station number
Controlling device according to harvester and slave station to connect, described master station processor is Power PC Processor.
The load-shedding equipment of many stations based on LAN the most according to claim 1 photovoltaic generation micro-grid system, its feature
Being, described slave station data acquisition unit is provided with from station processor.
The load-shedding equipment of many stations based on LAN the most according to claim 4 photovoltaic generation micro-grid system, its feature
Be, described from station processor be ARM core the dual core processor depositing DSP core.
The load-shedding equipment of many stations based on LAN the most according to claim 5 photovoltaic generation micro-grid system, its feature
Being, described ARM core connects liquid crystal display and keyboard.
The load-shedding equipment of many stations based on LAN the most according to claim 5 photovoltaic generation micro-grid system, its feature
Being, described DSP core and slave station data acquisition unit connect.
The load-shedding equipment of many stations based on LAN the most according to claim 4 photovoltaic generation micro-grid system, its feature
Being, there is self-checking unit described connection from station processor.
The load-shedding equipment of many stations based on LAN the most according to claim 1 photovoltaic generation micro-grid system, its feature
Being, it is FPGA processor that described slave station controls device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620599666.8U CN205753657U (en) | 2016-06-17 | 2016-06-17 | A kind of many stations based on LAN photovoltaic generation micro-grid system load-shedding equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620599666.8U CN205753657U (en) | 2016-06-17 | 2016-06-17 | A kind of many stations based on LAN photovoltaic generation micro-grid system load-shedding equipment |
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| CN205753657U true CN205753657U (en) | 2016-11-30 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106972499A (en) * | 2017-05-09 | 2017-07-21 | 许继集团有限公司 | A kind of accurate cutting load control system |
| CN107994602A (en) * | 2017-10-12 | 2018-05-04 | 安徽华腾电气有限公司 | Shifty photovoltaic micro guard method and its system |
| CN108832720A (en) * | 2018-06-29 | 2018-11-16 | 北京金风科创风电设备有限公司 | Communication control system, method and device for photovoltaic station |
| CN111313387A (en) * | 2020-03-31 | 2020-06-19 | 全球能源互联网研究院有限公司 | Flexible direct-current power grid layered architecture control protection system and protection method |
-
2016
- 2016-06-17 CN CN201620599666.8U patent/CN205753657U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106972499A (en) * | 2017-05-09 | 2017-07-21 | 许继集团有限公司 | A kind of accurate cutting load control system |
| CN107994602A (en) * | 2017-10-12 | 2018-05-04 | 安徽华腾电气有限公司 | Shifty photovoltaic micro guard method and its system |
| CN107994602B (en) * | 2017-10-12 | 2021-01-08 | 安徽康爱而电气有限公司 | Multi-strategy photovoltaic micro-grid protection method and system |
| CN108832720A (en) * | 2018-06-29 | 2018-11-16 | 北京金风科创风电设备有限公司 | Communication control system, method and device for photovoltaic station |
| CN111313387A (en) * | 2020-03-31 | 2020-06-19 | 全球能源互联网研究院有限公司 | Flexible direct-current power grid layered architecture control protection system and protection method |
| CN111313387B (en) * | 2020-03-31 | 2022-03-15 | 全球能源互联网研究院有限公司 | Flexible direct-current power grid layered architecture control protection system and protection method |
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