CN105978008B - A kind of redox flow battery energy storage system and its working method with wind field black starting-up function - Google Patents
A kind of redox flow battery energy storage system and its working method with wind field black starting-up function Download PDFInfo
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- CN105978008B CN105978008B CN201510837505.8A CN201510837505A CN105978008B CN 105978008 B CN105978008 B CN 105978008B CN 201510837505 A CN201510837505 A CN 201510837505A CN 105978008 B CN105978008 B CN 105978008B
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- 238000004146 energy storage Methods 0.000 title claims abstract description 85
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000012544 monitoring process Methods 0.000 claims description 22
- 239000007788 liquid Substances 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 9
- 238000005868 electrolysis reaction Methods 0.000 claims description 2
- 238000011084 recovery Methods 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H02J3/386—
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- H02J3/387—
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/10—Flexible AC transmission systems [FACTS]
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Abstract
The invention discloses a kind of redox flow battery energy storage system and its working method with wind field black starting-up function, the redox flow battery energy storage system includes：Flow battery system；First transformer；The energy storage inverter being connected with the flow battery system and first transformer；Battery management system；The Energy Management System being connected with the battery management system, energy storage inverter and the first bus；The Energy Management System is after knowing the power-off of the first bus, judge whether the flow battery system present battery SOC of battery management system feedback meets certain predetermined condition, and is issued according to the judging result that flow battery system present battery SOC meets certain predetermined condition into black starting-up mode control instruction；The present invention can be after the stoppage in transit of entire wind field power loss, under conditions of other grid transmissions can not be relied on to restore, and unit and sub-load by flow battery system to wind field without starting ability are powered, and gradually expands the recovery range of system.
Description
Technical field
The present invention relates to a kind of flow battery technology field, specially a kind of flow battery with wind field black starting-up function
Energy-storage system and its working method.
Background technique
Flow battery has that flexible design (power and capacity can independent design), long service life, charge-discharge performance be good, choosing
Not available for other conventional batteries such as location freedom, energy efficiency height, safety and environmental protection, the low and easy realization scale electric power storage of maintenance cost
Plurality of advantages.When practical application, flow battery can be widely applied to the renewable energy systems such as wind energy, solar energy work
For energy-storage system, enable the output of the electric power continuous-stable generated；It can also be used to carry out peak load shifting to power grid, by electricity consumption
The electric power of low ebb stores, and exports in peak of power consumption, carrys out balancing electric power supply and demand with this；Furthermore it is also possible to as urgent telegram is answered
Source system and stand-by station etc., it is considered to be one of most commercial prospects energy storage technology.
Wind energy has been obtained for being widely applied at present as a kind of new energy, still, sets for being only configured with blower
For standby wind power plant, after entire network system is because of failure power-off, the wind power generating set of non self starting is in nothing
In the case that method is restored by grid transmission, it will be unable to work normally, to limit the large-scale application of wind power plant.
In order to effectively take precautions against similar situation, need the mating relevant device of wind power plant can oneself " black starting-up " it is independent reliable to load
Power supply.Black starting-up refers to the unit that non self starting is driven by the starting with self-startup ability unit, then gradually expands
The recovery range of big system.Black starting-up power supply in the prior art is mainly the following：1) diesel-driven generator；2) combustion gas wheel
Machine；3) UPS uninterruptible power supply.But for diesel-driven generator, consumption of fossil fuels, unclean environmental protection are needed；For combustion
For gas-turbine, the device is complicated, and installation is complicated, and maintenance cost is high；UPS electrification time is limited to its capacity and cost,
It is impossible to meet long-times to carry out the condition of black starting-up under no electric condition.
Summary of the invention
The it is proposed of the present invention in view of the above problems, and develop a kind of flow battery energy storage system with wind field black starting-up function
System and its working method.
Technological means of the invention is as follows：
A kind of redox flow battery energy storage system with wind field black starting-up function, the wind field include the first bus, the second mother
Main transformer between line, the first bus and the second bus and a plurality of blower route being connected with the first bus, the liquid
Galvanic battery energy-storage system includes：
Flow battery system；The flow battery system include pile, positive fluid reservoir, cathode fluid reservoir, circulating pump and
Electrolyte circulation line；
The first transformer being connected with first bus；
The energy storage inverter being connected with the flow battery system and first transformer；The energy storage inverter will
The direct current of flow battery system output is exported by the boosting of the first transformer to first bus after carrying out inversion, and will
Alternating current on first bus carries out rectification output to the flow battery by energy storage inverter after the first transformer pressure-reducing
System charging；
The battery management system being connected with the flow battery system；The battery management system is for monitoring liquid stream electricity
The operating status of cell system simultaneously obtains operating parameter；The operating parameter includes at least battery SOC；
The Energy Management System being connected with the battery management system, energy storage inverter and the first bus；The energy
Management system know the first bus power-off after, to battery management system feedback flow battery system present battery SOC whether
Meet certain predetermined condition to be judged, and meets the judgement of certain predetermined condition according to flow battery system present battery SOC
As a result it issues into black starting-up mode control instruction；It issues in Energy Management System into after black starting-up mode control instruction,
The energy storage inverter changes into V/F control model by PQ control model, and adjusts output voltage and make the first transformer liter
The voltage obtained after pressure meets the power quality requirement of power quality national standard defined；
Further, the Energy Management System connects the energy storage inverter and flow battery by monitoring system on the spot
System；The operating parameter further includes cell voltage；It issues in the Energy Management System into black starting-up mode control instruction
Later, the entrance black starting-up mode control instruction that monitoring system is issued according to Energy Management System on the spot starts flow battery system
System, it is pre- whether the Energy Management System is more than or equal to the flow battery system current battery level that battery management system is fed back
If voltage is judged, it is that energy storage inverter changes into V/F control model by PQ control model, and adjust output voltage to make
The power quality requirement that the voltage obtained after the boosting of the first transformer meets power quality national standard defined is obtained, otherwise energy
Management system continues to whether the flow battery system current battery level that battery management system is fed back is more than or equal to predeterminated voltage
Judged；
Further, the voltage obtained after energy storage inverter adjustment output voltage makes the first transformer boost is full
After the power quality of sufficient power quality national standard defined requires, any wind-driven generator in the blower route is opened
It is dynamic；The wind-driven generator is connected with control device；The control device detects current first busbar voltage, and judges current the
Whether one busbar voltage is normal, is, controls the wind-driven generator and carries out limit Power operation, and otherwise the control device continues
Carry out above-mentioned judgement；
Further, the flow battery system at least 2, and be mutually backups；There are two the first transformer tools
Primary coil；Each flow battery system is connected via an energy storage inverter with a primary coil of first transformer；
When the flow battery system in any be currently running breaks down, another flow battery system as backup starts and transports
Row；
Further, the redox flow battery energy storage system further includes UPS and the second transformer for being connected with the first bus；
When first bus does not power off, the second transformer exports electric energy to Energy Management System, liquid after converting to the first busbar voltage
Galvanic electricity cell system, energy storage inverter, on the spot monitoring system and battery management system provide working power, when the first bus powers off,
It is mentioned by the UPS to Energy Management System, flow battery system, energy storage inverter, on the spot monitoring system and battery management system
For working power；
In addition, the wind field further includes a plurality of charge circuit being connected with the first bus, a plurality of charge circuit according to etc.
Grade sequence is divided into important load route and insignificant charge circuit, control the wind-driven generator carry out limit Power operation it
Afterwards, the microgrid that the wind-driven generator, flow battery system and the energy storage inverter of reruning are constituted, and it is full in microgrid voltage
After the power quality of sufficient power quality national standard defined requires, successively start each important load line according to hierarchal order
Road；
Further, the generated output of the wind-driven generator is lower than the 80% of flow battery rated power.
A kind of a kind of working method of the redox flow battery energy storage system with wind field black starting-up function as described above, including
Following steps：
1. the operating status of battery management system monitoring flow battery system simultaneously obtains operating parameter, the operating parameter is extremely
Less include battery SOC, executes 2.；
2. Energy Management System judges whether the first bus powers off, it is, executes 3., otherwise returns 2.；
3. Energy Management System judges whether the flow battery system present battery SOC of battery management system feedback meets one
Determine preset condition, be, execute 4., otherwise returns 2.；
4. Energy Management System is issued into black starting-up mode control instruction, execute 5.；
5. energy storage inverter changes into V/F control model by PQ control model, and adjusts output voltage and make the first change
The voltage obtained after depressor boosting meets the power quality requirement of power quality national standard defined；
Further, the operating parameter further includes cell voltage；The working method step 4. and step 5. between
Also there are following steps：
Start flow battery system；
Whether Energy Management System is more than or equal to the flow battery system current battery level that battery management system is fed back
Predeterminated voltage is judged, is, is executed 5., the flow battery system that otherwise Energy Management System feeds back battery management system
Whether current battery level, which is more than or equal to predeterminated voltage, continues to judge；
Further, 5. the working method also has following steps in step later：
Start any wind-driven generator in the blower route；
Control device detects current first busbar voltage, and judges whether current first busbar voltage is normal, is to control
The wind-driven generator carries out limit Power operation, otherwise continues whether to be normally carried out judgement to current first busbar voltage.
By adopting the above-described technical solution, a kind of flow battery storage with wind field black starting-up function provided by the invention
Energy system and its working method, can be after the stoppage in transit of entire wind field power loss, in the condition that other grid transmissions can not be relied on to restore
Under, it is directly unit and sub-load power supply of the wind field without starting ability by flow battery system, and then gradually expand step by step
The recovery range of wind power system finally realizes the recovery of entire wind farm system power supply；Due to without additional configuration diesel-driven generator,
The startup power supplies such as gas turbine or UPS and corresponding ancillary equipment, without being improved to wind field energy-storage system and structure, the system
Compared with prior art, have that structure is simple, cost is greatly lowered, fast, the system such as energy-storage system utilization rate height that starts speed
Column advantage.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of redox flow battery energy storage system of the present invention；
Fig. 2 is the exemplary structural schematic diagram of wind field of the present invention；
Fig. 3 is Energy Management System, on the spot monitoring system, battery management system, energy storage inverter and liquid stream electricity of the present invention
Connection schematic diagram between cell system；
Fig. 4 is the flow chart of working method of the present invention；
In figure：1, the first bus, the 2, first transformer, 3, energy storage inverter, 4, flow battery system, the 5, second transformation
Device, 6, UPS, the 7, second bus, 8, No. 1 blower routes, 9, No. 2 blower routes, 10, No. 3 blower routes, 11, main transformer,
12, No. 1 charge circuit, 13, No. 2 charge circuits, 14, PT line, 15, SVG route.
Specific embodiment
A kind of redox flow battery energy storage system with wind field black starting-up function as shown in Figure 1, Figure 2 and Figure 3, the wind field
Including between the first bus 1, the second bus 7, the first bus 1 and the second bus 7 main transformer 11 and with the first bus 1
The a plurality of blower route being connected, the redox flow battery energy storage system include：Flow battery system 4；The flow battery system 4
Including pile, positive fluid reservoir, cathode fluid reservoir, circulating pump and electrolyte circulation line；It is connected with first bus 1
First transformer 2；The energy storage inverter 3 being connected with the flow battery system 4 and first transformer 2；The energy storage
The direct current that inverter 3 exports flow battery system 4 is exported by the boosting of the first transformer 2 to described first after carrying out inversion
Bus 1, and the alternating current on the first bus 1 is subjected to rectification output by energy storage inverter 3 after the decompression of the first transformer 2
It charges to the flow battery system 4；The battery management system being connected with the flow battery system 4；The battery management
System is used to monitor the operating status of flow battery system 4 and obtains operating parameter；The operating parameter includes at least battery
SOC；The Energy Management System being connected with the battery management system, energy storage inverter 3 and the first bus 1；The energy pipe
Reason system know the first bus 1 power-off after, to battery management system feedback 4 present battery SOC of flow battery system whether
Meet certain predetermined condition to be judged, and meets the judgement of certain predetermined condition according to 4 present battery SOC of flow battery system
As a result it issues into black starting-up mode control instruction；It issues in Energy Management System into after black starting-up mode control instruction,
The energy storage inverter 3 changes into V/F control model by PQ control model, and adjusts output voltage and make the first transformer 2
The voltage obtained after boosting meets the power quality requirement of power quality national standard defined；Further, the energy pipe
Reason system connects the energy storage inverter 3 and flow battery system 4 by monitoring system on the spot；The operating parameter further includes electricity
Cell voltage；It issues in the Energy Management System into after black starting-up mode control instruction, monitoring system is according to energy on the spot
What management system issued enters black starting-up mode control instruction starting flow battery system 4, and the Energy Management System is to battery
Whether 4 current battery level of flow battery system of management system feedback, which is more than or equal to predeterminated voltage, is judged, is then energy storage
Inverter 3 changes into V/F control model by PQ control model, and adjusts after output voltage makes the first transformer 2 boost and obtain
To voltage meet power quality national standard defined power quality requirement, otherwise Energy Management System is to battery management system
Whether the flow battery system current battery level of system feedback, which is more than or equal to predeterminated voltage, continues to judge；Further, exist
The energy storage inverter 3 adjusts the voltage obtained after output voltage makes the first transformer 2 boost and meets power quality country mark
Any wind-driven generator starting after the power quality of quasi- defined requires, in the blower route；The wind-driven generator
It is connected with control device；The control device detects current first busbar voltage, and whether just to judge current first busbar voltage
It often, is to control the wind-driven generator to carry out limit Power operation, otherwise the control device continues above-mentioned judgement；Into one
Step ground, the flow battery system 4 at least 2, and be mutually backups；There are two primary coils for the tool of first transformer 2；Often
One flow battery system 4 is connected via an energy storage inverter 3 with a primary coil of first transformer 2；When it is any just
When flow battery system 4 in operation breaks down, another flow battery system as backup starts and runs；Further
Ground, the redox flow battery energy storage system further include UPS6 and the second transformer 5 for being connected with the first bus 1；First bus 1 is not
When power-off, the second transformer 5 exports electric energy to Energy Management System, flow battery system after converting to 1 voltage of the first bus
System 4, energy storage inverter 3, on the spot monitoring system and battery management system provide working power, when the first bus 1 powers off, by described
UPS6 provides work to Energy Management System, flow battery system 4, energy storage inverter 3, on the spot monitoring system and battery management system
Make power supply；In addition, the wind field further includes a plurality of charge circuit being connected with the first bus 1, a plurality of charge circuit according to etc.
Grade sequence is divided into important load route and insignificant charge circuit, control the wind-driven generator carry out limit Power operation it
Afterwards, the microgrid that the wind-driven generator, flow battery system 4 and the energy storage inverter 3 of reruning are constituted, and in microgrid voltage
After meeting the power quality requirement of power quality national standard defined, successively start each important load line according to hierarchal order
Road；Further, the generated output of the wind-driven generator is lower than the 80% of flow battery rated power.
A kind of a kind of flow battery energy storage system with wind field black starting-up function as described above as shown in Figures 1 to 4
The working method of system, includes the following steps：
1. the operating status of battery management system monitoring flow battery system 4 simultaneously obtains operating parameter, the operating parameter
Including at least battery SOC, execute 2.；
2. Energy Management System judges whether the first bus 1 powers off, it is to execute 3., otherwise returns 2.；
3. Energy Management System judges whether the 4 present battery SOC of flow battery system of battery management system feedback meets
Certain predetermined condition is to execute 4., otherwise returns 2.；
4. Energy Management System is issued into black starting-up mode control instruction, execute 5.；
5. energy storage inverter 3 changes into V/F control model by PQ control model, and adjusts output voltage and make the first change
The voltage that depressor 2 obtains after boosting meets the power quality requirement of power quality national standard defined；
Further, the operating parameter further includes cell voltage；The working method step 4. and step 5. between
Also there are following steps：
Start flow battery system 4；
Whether Energy Management System is more than or equal to 4 current battery level of flow battery system that battery management system is fed back
Predeterminated voltage is judged, is, is executed 5., the flow battery system 4 that otherwise Energy Management System feeds back battery management system
Whether current battery level, which is more than or equal to predeterminated voltage, continues to judge；
Further, 5. the working method also has following steps in step later：
Start any wind-driven generator in the blower route；
Control device detects current first bus, 1 voltage, and judges whether current first bus, 1 voltage is normal, is to control
It makes the wind-driven generator and carries out limit Power operation, otherwise continue whether to be normally carried out judgement to current first bus, 1 voltage.
Wind field of the present invention further includes the PT line 14 and SVG route 15 being connected with the first bus 1；Wherein, load line
Road includes load, air box change, emergency lighting etc. in wind field；PT line 14 is mainly used for examining the same period or checkout voltage；SVG route 15 is main
Compensation system reactive power is wanted, power factor is provided, maintains 1 voltage of the first bus, strengthen the system voltage stability.Institute of the present invention
Energy Management System is stated after knowing the power-off of the first bus 1, to the flow battery system present battery of battery management system feedback
Whether SOC, which meets certain predetermined condition, is judged；The certain predetermined condition is > 2%；The Energy Management System is also right
Whether the flow battery system current battery level of battery management system feedback, which is more than or equal to predeterminated voltage, is judged, here
Predeterminated voltage is that the work of energy storage inverter 3 starts voltage；The electrolyte circulation line includes pipeline and is mounted on pipeline
On electrically operated valve, flow sensor, pressure sensor and temperature sensor etc..The present invention issues entrance in Energy Management System
After black starting-up mode control instruction, the energy storage inverter 3 changes into V/F control model by PQ control model, and adjusts
The power quality that the voltage that output voltage obtains after the first transformer 2 is boosted meets power quality national standard defined is wanted
It asks, in addition, carrying out limit Power operation and then the operation wind-driven generator, flow battery controlling the wind-driven generator
The microgrid that system 4 and energy storage inverter 3 are constituted, and meet the electric energy of power quality national standard defined in microgrid voltage
After quality requirement, successively start each important load route according to hierarchal order, power quality national standard here specifically may be used
Think《GB/T 12325-2008 power quality supply voltage deviation》With《GB/T14549-1993 power quality utility network is humorous
Wave》, the present invention carries out limit Power operation in the control wind-driven generator and then the operation wind-driven generator, liquid stream are electric
The microgrid that cell system 4 and energy storage inverter 3 are constituted is briefly described below the process that the microgrid is established and run, works as wind speed
More than wind-driven generator incision wind speed when, pitch controller adjust blade pitch angle start wind-driven generator, when wind-force send out
When the closely synchronized revolving speed of the revolving speed of motor, field regulator work, direction wind-driven generator provides excitation, and it is big to adjust exciting current
Whether the small voltage for making wind-driven generator meets grid-connected conditions, adjusts close to microgrid voltage, fan converter detection microgrid parameter
The parameter of rectification campaign power generator, it is ensured that with microgrid with frequency with identical pressure；After grid-connected, wind-force is gradually increased by adjusting exciting current
The grid-connected power of generator, while the amplitude variation of microgrid voltage and frequency is monitored, certain fluctuation range is in microgrid voltage
After interior, successively start each important load route according to hierarchal order；Pitch controller, field regulator and blower therein become
Stream device starts after control device judges current first bus, 1 voltage normally；The first current mother of the control device judgement
Whether 1 voltage of line normal, be specifically as follows the frequency for judging current first busbar voltage and phase whether with the first busbar voltage
Frequency when normal power supply is consistent with phase, when whether the amplitude for judging current first busbar voltage is the first bus normal power supply
Voltage ± default fluctuation range, default fluctuation range here can be 10%, and flow battery system 4 of the invention can have
2, and be mutually backups, each flow battery system 4 includes pile, positive fluid reservoir, cathode fluid reservoir, circulating pump and electrolysis
Liquid circulation line；Circuit, fluid path are mutually indepedent between two flow battery systems, and can individually be scheduled, when wherein
When one flow battery system breaks down, a flow battery system in addition can continue to run, and improve the benefit of energy-storage system
With rate；First transformer 2 can be using double transformer with split windings；Flow battery system 4 becomes via energy storage inverter 3, first
Depressor 2 is connected to the first bus 1；Between Energy Management System and on the spot monitoring system and on the spot monitoring system and cell tube
MODBUS_TCP communications protocol is used between reason system；It is realized between monitoring system and energy storage inverter 3 using CAN bus on the spot
Communication；Control device of the present invention is used to detect amplitude, frequency and the phase of current first busbar voltage, and for judging to work as
Whether amplitude, frequency and the phase of preceding first busbar voltage are consistent with amplitude of first busbar voltage when normal, frequency and phase,
And amplitude, frequency and phase when amplitude, frequency and the phase of current first busbar voltage and the first busbar voltage are normal
Limit Power operation is carried out for controlling the wind-driven generator when consistent, when amplitude, frequency and the phase of current first busbar voltage
Position with when amplitude of first busbar voltage when normal, frequency and inconsistent phase for continuing the width to current first busbar voltage
Value, frequency and phase whether with amplitude of first busbar voltage when normal, frequency and phase is consistent is judged；The control dress
It sets and is connected with each blower route and the first bus 1；Contain wind-driven generator in each blower route.
Energy Management System of the present invention also detects energy storage inverter 3 while knowing whether the first bus 1 powers off
It exchanges whether side voltage is zero, and whether detection 11 high-pressure side alternating voltage of main transformer is zero, is knowing that the first bus 1 is disconnected
Electricity, energy storage inverter 3 exchange side voltage be zero and detection 11 high-pressure side alternating voltage of main transformer be zero after, to battery
Whether the 4 present battery SOC of flow battery system of management system feedback, which meets certain predetermined condition, is judged, and according to liquid stream
The judging result that 4 present battery SOC of battery system meets certain predetermined condition is issued into black starting-up mode control instruction；This hair
The generated output of the bright wind-driven generator is lower than the 80% of flow battery rated power, because working as the power generation function of wind-driven generator
When rate is greater than flow battery rated power, the frequency of microgrid voltage and amplitude fluctuations are very big at this time, far more than power quality country
The power quality requirement of prescribed by standard, fan converter are exited due to low voltage crossing protection；The gradually hair of wind-driven generator
Electrical power monitors the power quality of microgrid voltage, when the generated output of wind-driven generator is less than flow battery rated power
80%, the amplitude of microgrid voltage and rate-adaptive pacemaker are stablized at this time, and the power quality for meeting power quality national standard defined is wanted
It asks.
The present invention meets electric power code requirement with device powers down sequence in the wind field of black starting-up function and first breaks load again
The principle in power-off source；As shown in Fig. 2, after the power-off of the first bus 1, successively disconnect first each blower route and the first bus 1 it
Between connection, specifically, wind field include No. 1 blower route 8 of blower route 9 and No. 3 blower route 10,1 of blower route 8,2
It is connected by switch S1 with the first bus 1, No. 2 blower routes 9 are connected by switch S2 with the first bus 1, No. 3 blower routes 10
It is connected by switch S3 with the first bus 1, then switch S1, switch S2 and switch S3 is successively disconnected, in each blower route and first
Connection between bus 1 disconnects and then successively disconnects the connection between each charge circuit and the first bus 1, specifically, wind field
It is connected by switch S4 with the first bus 1 including No. 1 charge circuit 12 of charge circuit 13,1 of charge circuit 12,2, No. 2 negative
Lotus route 13 is connected by switch S5 with the first bus 1, then switch S4, switch S5 is successively disconnected, in each charge circuit and first
After connection between bus 1 disconnects, the connection being then turned off between aforementioned PT line 14, SVG route 15 and the first bus 1, tool
Body, by switch S6 connection between PT line 14 and the first bus 1, connected between SVG route 15 and the first bus 1 by switch S7
It connects, then successively disconnects switch S6, S7, finally disconnect the connection between the first bus 1 and main transformer 11, specifically, disconnection is opened
Close S8.
A kind of redox flow battery energy storage system and its working method with wind field black starting-up function provided by the invention, can
After the stoppage in transit of entire wind field power loss, under conditions of other grid transmissions can not be relied on to restore, directly pass through flow battery system
Unit and sub-load power supply for wind field without starting ability, and then gradually expand the recovery range of wind power system step by step, finally
Realize the recovery of entire wind farm system power supply；Due to without startup power supplies such as additional configuration diesel-driven generator, gas turbine or UPS
And corresponding ancillary equipment, without improving to wind field energy-storage system and structure, which compared with prior art, has structure
Simply, cost be greatly lowered, fast, the series of advantages such as energy-storage system utilization rate height that start speed.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of redox flow battery energy storage system with wind field black starting-up function, the wind field include the first bus, the second bus,
Main transformer between first bus and the second bus and a plurality of blower route being connected with the first bus, feature exist
Include in the redox flow battery energy storage system：
Flow battery system；The flow battery system includes pile, positive fluid reservoir, cathode fluid reservoir, circulating pump and electrolysis
Liquid circulation line；
The first transformer being connected with first bus；
The energy storage inverter being connected with the flow battery system and first transformer；The energy storage inverter is by liquid stream
The direct current of battery system output carries out after inversion through the boosting output of the first transformer to first bus, and by first
Alternating current on bus carries out rectification output to the flow battery system by energy storage inverter after the first transformer pressure-reducing
Charging；
The battery management system being connected with the flow battery system；The battery management system is for monitoring flow battery system
The operating status of system simultaneously obtains operating parameter；The operating parameter includes at least battery SOC；
The Energy Management System being connected with the battery management system, energy storage inverter and the first bus；The energy management
Whether system meets the flow battery system present battery SOC of battery management system feedback after knowing the power-off of the first bus
Certain predetermined condition is judged, and meets the judging result of certain predetermined condition according to flow battery system present battery SOC
It issues and enters black starting-up mode control instruction；It issues in Energy Management System into after black starting-up mode control instruction, it is described
Energy storage inverter changes into V/F control model by PQ control model, and adjust output voltage make the first transformer boost after
Obtained voltage meets the power quality requirement of power quality national standard defined；
The Energy Management System connects the energy storage inverter and flow battery system by monitoring system on the spot；The operation
Parameter further includes cell voltage；It issues in the Energy Management System into after black starting-up mode control instruction, monitors on the spot
System starts flow battery system, the energy management according to the black starting-up mode control instruction that enters that Energy Management System issues
System judges whether the flow battery system current battery level that battery management system is fed back is more than or equal to predeterminated voltage,
It is that energy storage inverter changes into V/F control model by PQ control model, and adjusts output voltage and make the first transformer liter
The voltage obtained after pressure meets the power quality requirement of power quality national standard defined, and otherwise Energy Management System is to battery
Whether the flow battery system current battery level of management system feedback, which is more than or equal to predeterminated voltage, continues to judge；
The redox flow battery energy storage system further includes UPS and the second transformer for being connected with the first bus；First bus does not break
When electric, the second transformer exports electric energy to Energy Management System, flow battery system, storage after converting to the first busbar voltage
Energy inverter, on the spot monitoring system and battery management system provide working power, when the first bus powers off, by the UPS to energy
Management system, flow battery system, energy storage inverter, on the spot monitoring system and battery management system offer working power are provided.
2. a kind of redox flow battery energy storage system with wind field black starting-up function according to claim 1, it is characterised in that
The voltage obtained after energy storage inverter adjustment output voltage makes the first transformer boost meets power quality country mark
Any wind-driven generator starting after the power quality of quasi- defined requires, in the blower route；The wind-driven generator
It is connected with control device；The control device detects current first busbar voltage, and whether just to judge current first busbar voltage
It often, is to control the wind-driven generator to carry out limit Power operation, otherwise the control device continues above-mentioned judgement.
3. a kind of redox flow battery energy storage system with wind field black starting-up function according to claim 1, it is characterised in that
The flow battery system at least 2, and be mutually backups；There are two primary coils for the first transformer tool；Each liquid stream
Battery system is connected via an energy storage inverter with a primary coil of first transformer；When in any be currently running
When flow battery system breaks down, another flow battery system as backup starts and runs.
4. a kind of redox flow battery energy storage system with wind field black starting-up function according to claim 2, the wind field is also
Including a plurality of charge circuit being connected with the first bus, a plurality of charge circuit according to hierarchal order be divided into important load route and
Insignificant charge circuit, it is characterised in that carry out limit Power operation and then the operation wind controlling the wind-driven generator
The microgrid that power generator, flow battery system and energy storage inverter are constituted, and meet power quality country in microgrid voltage
After the power quality of prescribed by standard requires, successively start each important load route according to hierarchal order.
5. a kind of redox flow battery energy storage system with wind field black starting-up function according to claim 2, it is characterised in that
The generated output of the wind-driven generator is lower than the 80% of flow battery rated power.
6. a kind of a kind of work side of the redox flow battery energy storage system with wind field black starting-up function as described in claim 1
Method, it is characterised in that the working method includes the following steps：
1. the operating status of battery management system monitoring flow battery system simultaneously obtains operating parameter, the operating parameter is at least wrapped
Battery SOC is included, is executed 2.；
2. Energy Management System judges whether the first bus powers off, it is, executes 3., otherwise returns 2.；
3. it is certain pre- that Energy Management System judges whether the flow battery system present battery SOC of battery management system feedback meets
If condition is, execute 4., otherwise returns 2.；
4. Energy Management System is issued into black starting-up mode control instruction, execute 5.；
5. energy storage inverter changes into V/F control model by PQ control model, and adjusts output voltage and make the first transformer
The voltage obtained after boosting meets the power quality requirement of power quality national standard defined；
Wherein, the operating parameter further includes cell voltage；The working method step 4. and step 5. between also have such as
Lower step：Start flow battery system；The flow battery system present battery that Energy Management System feeds back battery management system
Whether voltage, which is more than or equal to predeterminated voltage, is judged, is to execute 5., otherwise Energy Management System is anti-to battery management system
Whether the flow battery system current battery level of feedback, which is more than or equal to predeterminated voltage, continues to judge；The flow battery energy storage
System further includes UPS and the second transformer for being connected with the first bus；When first bus does not power off, the second transformer is to first
Busbar voltage exports electric energy to Energy Management System, flow battery system, energy storage inverter, on the spot monitoring system after being converted
Working power is provided with battery management system, when the first bus powers off, by the UPS to Energy Management System, flow battery system
System, energy storage inverter, on the spot monitoring system and battery management system provide working power.
7. a kind of working method of redox flow battery energy storage system with wind field black starting-up function according to claim 6,
It is characterized in that 5. the working method also has following steps in step later：
Start any wind-driven generator in the blower route；
Control device detects current first busbar voltage, and judges whether current first busbar voltage is normal, is described in then control
Wind-driven generator carries out limit Power operation, otherwise continues whether to be normally carried out judgement to current first busbar voltage.
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| CN106451562A (en) * | 2016-12-16 | 2017-02-22 | 北京索英电气技术有限公司 | Black-start system and method for wind and light power storage station |
| CN106652698B (en) * | 2017-01-24 | 2019-04-30 | 湖南德沃普新能源有限公司 | A kind of teaching demonstration system applied suitable for all-vanadium flow battery in field of renewable energy and method |
| CN107482661B (en) * | 2017-09-07 | 2020-07-14 | 广州智光电气股份有限公司 | Converter and flow battery energy storage system |
| DE102017127081B4 (en) * | 2017-11-17 | 2019-05-29 | Sma Solar Technology Ag | Method for black start of a power supply device, bidirectional inverter and power supply device with a bidirectional inverter |
| CN108011117B (en) * | 2017-12-01 | 2020-04-07 | 大连融科储能装备有限公司 | Centralized monitoring system and monitoring method for flow battery |
| CN107947184B (en) * | 2017-12-25 | 2024-02-02 | 国网辽宁省电力有限公司沈阳供电公司 | Distributed flexible voltage regulation topological structure of power distribution network based on AC-AC converter |
| CN114336708A (en) * | 2021-12-31 | 2022-04-12 | 杭州协能科技股份有限公司 | Black start method of energy storage system and energy storage system |
| US11824356B1 (en) * | 2022-06-30 | 2023-11-21 | Xi'an Thermal Power Research Institute Co., Ltd. | System and method of black start for new power system with energy storage configuration |
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