CN106712092B - System and its black-start method with black starting-up function - Google Patents
System and its black-start method with black starting-up function Download PDFInfo
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- CN106712092B CN106712092B CN201710056142.3A CN201710056142A CN106712092B CN 106712092 B CN106712092 B CN 106712092B CN 201710056142 A CN201710056142 A CN 201710056142A CN 106712092 B CN106712092 B CN 106712092B
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 241001672018 Cercomela melanura Species 0.000 title claims abstract description 17
- 238000004146 energy storage Methods 0.000 claims abstract description 41
- 238000012544 monitoring process Methods 0.000 claims abstract description 11
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 230000007774 longterm Effects 0.000 abstract description 11
- 238000011084 recovery Methods 0.000 abstract description 5
- 206010033799 Paralysis Diseases 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003694 hair properties Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Classifications
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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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering with light sensitive cells
-
- 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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
-
- 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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/28—The renewable source being wind energy
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The present invention provides a kind of system with black starting-up function, system with black starting-up function includes controller, DC bus, energy storage access device, generating equipment access device, it further include DC output interface and/or AC output interface, system with black starting-up function further includes the external power supply access device for accessing external power supply, wherein monitoring control devices are to powering off, carry out internal black starting-up or external black starting-up, main micro battery of the internal black starting-up using energy storage device as black starting-up, main micro battery of the external black starting-up using external power supply as black starting-up.The present invention also provides a kind of black-start methods.System and its black-start method provided by the invention with black starting-up function, the distributed energy black starting-up after system has a power failure in a short time and the distributed energy black-start method after long-term power-off are considered simultaneously, the instantaneous recovery time of power off time and system power supply under grid fault conditions is reduced, the long-term interior stability and reliability powered of system is improved.
Description
Technical field
The present invention relates to distributed energy fields, and in particular to system and its black-start method with black starting-up function.
Background technique
With the fast development of global economy, industry rapidly increases power demand, and distributed energy is clear due to having
It is clean, renewable to be widelyd popularize.In current research and application, distributed energy is more accessed in the form of micro-capacitance sensor big
It is run in power grid.When bulk power grid failure or micro-capacitance sensor internal fault cause micro-capacitance sensor to be paralysed, micro-capacitance sensor needs to carry out in time
Black starting-up drives the micro battery of no black start-up ability by having the micro battery of black start-up ability inside starting micro-capacitance sensor, real
The now restarting of entire micro-capacitance sensor restores rapidly the power supply to load.
Traditional micro-capacitance sensor black starting-up mode is mainly then to go here and there by having the micro battery of black start-up ability first to be started
Row concurrently drives other micro batteries without black start-up ability.After start completion can isolated island autonomy operation, can also be simultaneously
Enter bulk power grid to be incorporated into the power networks.
Serial black starting-up is only to enable single black starting-up power supply, first disconnects all loads, then starts black starting-up power supply and builds
Vertical low-voltage network, incision part is important or controllable burden.Finally start other controllable micro batteries, synchronizes and be connected to the grid.
Parallel black starting-up is by the way that system is dispersed into multiple independently operated mini systems, and each autonomous system carries out respective
Black starting-up, carry out simultaneous interconnecting again after start completion.
Difference, off-network type power supply system are a kind of complete for the small-sized wind-light storage power supply system of off-network type and traditional micro-capacitance sensor
It is detached from bulk power grid and remains a kind of independently operated Autonomous Model power supply system, by integrating wind-force hair near user
Electricity, solar power generation, energy-storage battery equal distribution decline source, provide a user the electric energy of demand.
Since off-network type wind-light storage power supply system is to completely disengage bulk power grid operation, on the one hand meet with extreme length
Phase wind-force is strong, sunshine deficiency when, off-network type power supply system is easier that internal paralysis occurs；Hair inside another aspect power supply system
After raw failure or paralysis, also difference is larger with traditional micro-capacitance sensor black starting-up strategy for the strategy of black starting-up.
In the prior art seldom for the distributed power supply system black starting-up research of wind-light storage one, therefore, for off-network
The small-sized wind-light storage power supply system of type develops a set of reliable and stable black starting-up control method and is of great significance.
Summary of the invention
There may be unexpected the case where powering off for the distributed power supply system of wind-light storage one, it is also possible to exist due to day gas bar
Part limitation stops the case where power generation, seldom considering power supply system simultaneously in prior art black starting-up control system or method for a long time
Black starting-up after black starting-up and system have a power failure for a long time after short-term power-off.
In view of problems of the prior art, the object of the present invention is to provide a kind of system with black starting-up function,
The distributed energy black starting-up after system has a power failure in a short time and the distributed energy black starting-up side after long-term power-off are considered simultaneously
Method reduces the instantaneous recovery time of power off time and system power supply under grid fault conditions, improves the steady of the long-term interior power supply of system
Qualitative and reliability.
The present invention also provides a kind of black-start methods of system with black starting-up function.
The present invention provides a kind of system with black starting-up function, and the system with black starting-up function includes controller, straight
Bus, the energy storage access device being connected on DC bus, generating equipment access device are flowed, the system with black starting-up function is also
Including DC output interface and/or AC output interface, generating equipment access device is for accessing generating equipment, energy storage access dress
Setting the system for accessing energy storage device, with black starting-up function further includes being connected on DC bus to be used to access external electrical
The external power supply access device in source, wherein monitoring control devices carry out internal black starting-up or external black starting-up to powering off, internal
Main micro battery of the black starting-up using energy storage device as black starting-up, master micro- electricity of the external black starting-up using external power supply as black starting-up
Source.
Further, the time of power-off is less than setting value, and controller carries out internal black starting-up, and the time of power-off is greater than or waits
In setting value, controller carries out external black starting-up.
Further, internal black starting-up uses the period 1, and external black starting-up uses second round, second round first
The integral multiple in period.
The present invention also provides a kind of black-start method of above-mentioned system with black starting-up function, following steps：
(1) monitoring control devices have the voltage and electric current of the interdependent node in the system of black starting-up function；
(2) information obtained based on monitoring is assessed, and in case of powering off, the time of power-off is less than setting value, is executed
Step (3)；The time of power-off is greater than or equal to setting value, executes step (4)；
(3) controller carries out internal black starting-up；
(4) controller carries out external black starting-up.
Further, the internal black starting-up of step (3) controller progress includes the following steps：
(31) whether detection energy storage device enters dormant state, if not entering dormant state, executes step (32)；If
Into dormant state, execute step (34)；
(32) controller control energy storage access device work, makes energy storage device to DC bus powered；
(33) controller control DC output interface and/or AC output interface, cut external load；
(34) after the period 1, the working condition of the generating equipment of access is detected, if at least one generating equipment
Normal operation then controls generating equipment and charges to energy storage device, executes step (1)；If the generating equipment of all accesses is transported
Row is abnormal, executes step (4).
Further, the external black starting-up of step (4) controller progress includes the following steps：
(41) after second round, controller is switched to external cell powering mode；
(42) the main micro battery using external power supply as black starting-up carries out external black starting-up；
(43) controller controls external power supply and charges to energy storage device；
(44) controller is switched to energy storage device powering mode, executes step (34).
Further, main micro battery of the step (42) using external power supply as black starting-up, carry out external black starting-up include with
Lower step：
(421) controller controls external power supply access device, makes external power supply to DC bus powered；
(422) controller control DC output interface and/or AC output interface, cut external load.
Compared with prior art, the system and its black-start method provided by the invention with black starting-up function, have with
Lower beneficial effect：The distributed energy black starting-up after system has a power failure in a short time and the distributed energy after long-term power-off are considered simultaneously
Source black-start method reduces the instantaneous recovery time of power off time and system power supply under grid fault conditions, and it is long-term to improve system
The stability and reliability of interior power supply.
The invention proposes a kind of distributed power supply systems for long-term off-grid operation, at present on the market almost without；
The present invention includes the black-start scheme after short-term power-off and the black-start scheme after long-term have a power failure simultaneously, guarantees that system is reliable and stable
Ground resumes operation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the system with black starting-up function of one embodiment of the present of invention；
Fig. 2 is the flow chart of the black-start method of the system shown in FIG. 1 with black starting-up function.
Specific embodiment
As shown in Figure 1, the system with black starting-up function of one embodiment of the present of invention, including：Controller, direct current are female
Line, the energy storage access device being connected on DC bus, generating equipment access device.
Energy storage access device is used for for accessing energy storage device, including energy storage interface, contactor and energy storage DC converter
Access energy storage device.
Generating equipment access device is for accessing generating equipment, and generating equipment access device is photovoltaic access in the present embodiment
Device and blower access device, photovoltaic access device includes photovoltaic interface, photovoltaic rectifier and photovoltaic conversion controller, for connecing
Enter photovoltaic power generation equipment；Blower access device includes fan interface, blower rectifier and blower transform controller, for accessing wind
Machine.In other embodiments, generating equipment access device may be other generating equipment access devices, such as diesel-driven generator
Access device.
System with black starting-up function further includes DC output interface and AC output interface, DC output interface connection
Onto DC bus, for powering to DC load；AC output interface is connected on DC bus by AC converter, is used
It powers in AC load, the system with black starting-up function can also only include DC output interface, or only include exchange
Output interface can be determined according to specific application environment.
System with black starting-up function further includes the external power supply access device for accessing external power supply.
Controller is connect with above-mentioned all parts, to control the operation of all parts.
The power supply system of the system building with black starting-up function in through this embodiment, when normal operation, controller
The contactor and energy storage DC converter of energy storage access device are controlled, energy storage device such as battery is to DC bus powered；Simultaneously
Controller detects the voltage and remaining capacity of battery, if the voltage or remaining capacity of battery are lower than setting value, controller control
The photovoltaic rectifier of photovoltaic access device, the blower rectifier of photovoltaic conversion controller and/or blower access device, blower become
Changer controller and energy storage DC converter charge to battery.
Monitoring control devices carry out internal black starting-up or external black starting-up, internal black starting-up is with energy storage device to powering off
As the main micro battery of black starting-up, main micro battery of the external black starting-up using external power supply as black starting-up.
It can determine according to the time of power-off length and still start confession using external black starting-up using internal black starting-up
Electric system.It is less than the power-off of setting value for the time of power-off, such as setting value is 1 hour, the voltage or remaining capacity of battery
It is enough to complete black starting-up operation, controller starts power supply system using internal black starting-up；The time of power-off is greater than 1 hour
Power-off, the voltage or remaining capacity of battery may be very low, for protection battery can stop supplying power for outside, in a dormant state, this
When controller start power supply system using external black starting-up, that is, external power supply is utilized to carry out black starting-up.
The black-start method of system in the present embodiment with black starting-up function, includes the following steps：
(1) monitoring control devices have the voltage and electric current of the interdependent node in the system of black starting-up function；
(2) information obtained based on monitoring is assessed, and in case of powering off, the time of power-off is less than setting value, is executed
Step (3)；The time of power-off is greater than or equal to setting value, executes step (4)；
(3) controller carries out internal black starting-up；
(4) controller carries out external black starting-up.
Monitoring has the interdependent node in the system of black starting-up function in step (1), and interdependent node specifically refers to photovoltaic and connects
Mouth, fan interface, energy storage interface, DC bus, DC output interface and AC output interface.
Step (3) controller carries out internal black starting-up and includes the following steps：
(31) whether detection energy storage device enters dormant state, if not entering dormant state, executes step (32)；If
Into dormant state, execute step (34)；
(32) controller control energy storage access device work, makes energy storage device to DC bus powered；
(33) controller control DC output interface and/or AC output interface, cut external load；
(34) after the period 1, the working condition of the generating equipment of access is detected, if at least one generating equipment
Normal operation then controls generating equipment and charges to energy storage device, executes step (1)；If the generating equipment of all accesses is transported
Row is abnormal, executes step (4).
Step (4) controller carries out external black starting-up and includes the following steps：
(41) after second round, controller is switched to external cell powering mode；
(42) the main micro battery using external power supply as black starting-up carries out external black starting-up；
(43) controller controls external power supply and charges to energy storage device；
(44) controller is switched to energy storage device powering mode, executes step (34).
Main micro battery of the step (42) using external power supply as black starting-up carries out external black starting-up and includes the following steps：
(421) controller controls external power supply access device, makes external power supply to DC bus powered；
(422) controller control DC output interface and/or AC output interface, cut external load.
The power supply system of the system building with black starting-up function in the present embodiment, it is big to control permanence within the slow period
The black starting-up process of power failure, that is, external black starting-up；The process of transience black starting-up is monitored and controlled in fast cycle,
It is exactly internal black starting-up.
Using the wind-light storage power supply system of Inner Mongol trial operation as embodiment, but the invention is suitable for being not limited in implementing
Application in example.
The black starting-up whole process of wind-light storage power supply system is divided into before starting, starting neutralizes three phases after starting.
Limit weather and weather conditions or other extraneous factors as existing for the Inner Mongol encounter long-term lack when power supply system being caused to run
Wind lacks light or the long-term operating conditions such as have a power failure, therefore internal system black starting-up will be divided into during black starting-up and exterior is black opens
It is dynamic.
Internal black starting-up uses the period 1, is referred to as the fast period, is denoted as tf, tf generally takes second or Millisecond
Not, the problem of being able to solve the fast quick-recovery of system after anxious hair property is had a power failure on a large scale.
External black starting-up uses second round, is referred to as the slow period, is denoted as Ts, and Ts generally takes hour or day rank,
Wherein Ts=N*Tf, N are positive integer, can solve the problems, such as that the system after powering off for a long time is restored in a manner of low energy consumption.
Using different time scales come start-up course in black starting-up inside the control system and exterior, in fast time-domain
Real-time response is of short duration has a power failure on a large scale for control, solves the problems, such as the fast quick-recovery of system after anxious hair property is had a power failure on a large scale；In time domain at a slow speed, to non-
Load Emergency or micro battery with damping characteristics are flexibly controlled, and external black starting-up control are carried out, after solving long-term have a power failure
The control problem that electric system is restarted.
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that those skilled in the art without
It needs creative work according to the present invention can conceive and makes many modifications and variations.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical solution, all should be within the scope of protection determined by the claims.
Claims (6)
1. a kind of distributed power supply system with black starting-up function, which is characterized in that the distribution with black starting-up function
Formula power supply system includes controller, DC bus, the energy storage access device being connected on the DC bus, generating equipment access
Device, the system with black starting-up function further include DC output interface and/or AC output interface, the generating equipment
For access device for accessing generating equipment, the energy storage access device is described to have the function of black starting-up for accessing energy storage device
System further include be connected on the DC bus for accessing the external power supply access device of external power supply, wherein described
Monitoring control devices carry out internal black starting-up or external black starting-up to powering off；It is less than setting value, the control when the time of power-off
Device processed carries out internal black starting-up, and the time of power-off is greater than or equal to setting value, and the controller carries out external black starting-up；In described
Main micro battery of portion's black starting-up using the energy storage device as black starting-up, the external black starting-up is using the external power supply as black
The main micro battery of starting.
2. as described in claim 1 with the distributed power supply system of black starting-up function, which is characterized in that internal black starting-up is adopted
With the period 1, external black starting-up uses second round, and the second round is the integral multiple of the period 1.
3. a kind of black starting-up side of such as described in any item distributed power supply systems with black starting-up function of claim 1-2
Method, which is characterized in that the described method comprises the following steps：
(1) monitoring control devices have the voltage and electric current of the interdependent node in the system of black starting-up function；
(2) information obtained based on monitoring is assessed, and in case of powering off, the time of power-off is less than setting value, executes step
(3)；The time of power-off is greater than or equal to setting value, executes step (4)；
(3) controller carries out internal black starting-up；
(4) controller carries out external black starting-up.
4. black-start method as claimed in claim 3, which is characterized in that step (3) controller carries out internal black starting-up
Include the following steps：
(31) whether detection energy storage device enters dormant state, if not entering dormant state, executes step
(32)；If executed step (34) into dormant state；
(32) controller control energy storage access device work makes energy storage device to DC bus powered；
(33) the controller control DC output interface and/or AC output interface, cut external load；
(34) after the period 1, the working condition of the generating equipment of access is detected, if at least one generating equipment is run
Normally, then it controls the generating equipment to charge to energy storage device, execute step (1)；If the generating equipment of all accesses is transported
Row is abnormal, executes step (4).
5. black-start method as claimed in claim 4, which is characterized in that step (4) controller carries out external black starting-up
Include the following steps：
(41) after second round, the controller is switched to external cell powering mode；
(42) the main micro battery using external power supply as black starting-up carries out external black starting-up；
(43) controller controls external power supply and charges to energy storage device；
(44) controller is switched to energy storage device powering mode, executes step (34).
6. black-start method as claimed in claim 5, which is characterized in that master of the step (42) using external power supply as black starting-up
Micro battery carries out external black starting-up and includes the following steps：
(421) controller controls external power supply access device, makes external power supply to DC bus powered；
(422) the controller control DC output interface and/or AC output interface, cut external load.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710056142.3A CN106712092B (en) | 2017-01-25 | 2017-01-25 | System and its black-start method with black starting-up function |
| PCT/CN2017/103946 WO2018137355A1 (en) | 2017-01-25 | 2017-09-28 | System having black start function, and black start method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710056142.3A CN106712092B (en) | 2017-01-25 | 2017-01-25 | System and its black-start method with black starting-up function |
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| Publication Number | Publication Date |
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| CN106712092A CN106712092A (en) | 2017-05-24 |
| CN106712092B true CN106712092B (en) | 2018-11-23 |
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| CN201710056142.3A Active CN106712092B (en) | 2017-01-25 | 2017-01-25 | System and its black-start method with black starting-up function |
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| WO (1) | WO2018137355A1 (en) |
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| CN117439230B (en) * | 2023-10-31 | 2024-08-09 | 广东首航智慧新能源科技有限公司 | Energy storage module and starting method thereof, energy storage system and starting method thereof |
| CN118473061B (en) * | 2024-07-11 | 2024-10-25 | 杭州协能科技股份有限公司 | Black start control method of energy storage system |
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| US8269374B2 (en) * | 2010-03-04 | 2012-09-18 | De Caires Damian | Solar panel power management system and method |
| CN103840487B (en) * | 2014-04-01 | 2016-01-20 | 阳光电源股份有限公司 | Black-start method, EMS and common ac bus are from net type light storage microgrid |
| CN104882906B (en) * | 2015-05-04 | 2017-06-13 | 华电电力科学研究院 | A kind of distributed micro-grid black starting-up control system and method based on photovoltaic and energy storage |
| CN104836254B (en) * | 2015-05-19 | 2017-03-01 | 东南大学 | A kind of power grid"black-start" system and the method for photovoltaic plant participation power grid"black-start" |
| CN205212448U (en) * | 2015-10-22 | 2016-05-04 | 华南理工大学 | Black start -up system suitable for light stores up little electric wire netting |
| CN106712092B (en) * | 2017-01-25 | 2018-11-23 | 上海电气分布式能源科技有限公司 | System and its black-start method with black starting-up function |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI866957B (en) * | 2019-04-11 | 2024-12-21 | 丹麥商沃旭風力能源公司 | A method for black-starting an electrical grid, a method for re-energizing an electrical grid, a synchronous condenser and an energy storage with an associated converter, and an energy farm |
| US12278494B2 (en) | 2019-04-11 | 2025-04-15 | Ørsted Wind Power A/S | Method for black-starting an electrical grid |
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| CN106712092A (en) | 2017-05-24 |
| WO2018137355A1 (en) | 2018-08-02 |
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