CN106712092A - System with function of black start, and black start method - Google Patents
System with function of black start, and black start method Download PDFInfo
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- CN106712092A CN106712092A CN201710056142.3A CN201710056142A CN106712092A CN 106712092 A CN106712092 A CN 106712092A CN 201710056142 A CN201710056142 A CN 201710056142A CN 106712092 A CN106712092 A CN 106712092A
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- black starting
- black
- energy storage
- controller
- starting
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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
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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
- 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 invention provides a system with a function of black start, and the system comprises a controller, a DC bus, an energy storage access device, and a power generation equipment access device. The system also comprises a DC output interface and/or an AC output interface. The system also comprises an external power access device for the access of an external power supply. When the controller monitors the power failure, the internal black start or the external black start is carried out, wherein the internal black start takes the energy storage device as the main miniature power supply of the black start, and the external black start takes the external power supply as the main miniature power supply of the black start. The invention also provides a black start method. The system and method can give consideration to the distributed energy black start after short-time power failure and the distributed energy black start after long-time power failure at the same time, thereby reducing the power failure time and quick recovery time of system power supply under the condition of a power grid fault, and improving the power supply stability and reliability of a system in a long time period.
Description
Technical field
The present invention relates to distributed energy field, and in particular to system and its black-start method with black starting-up function.
Background technology
As the fast development of global economy, industry rapidly rise to power demand, distributed energy is due to clear
It is clean, renewable to be widelyd popularize.In current research and application, distributed energy is more accessed big in the form of micro-capacitance sensor
Run in power network.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, the micro battery without black start-up ability is driven by starting micro battery of the micro-capacitance sensor inside with black start-up ability, real
The now restarting of whole micro-capacitance sensor, recovers rapidly the supply of electric power to load.
Traditional micro-capacitance sensor black starting-up mode is mainly and is first started by the micro battery with black start-up ability, then goes here and there
Row concurrently drives other micro batteries without black start-up ability.Can the autonomous operation of isolated island after start completion, it is also possible to and
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, be synchronously connected to the grid.
Parallel black starting-up is the mini system by the way that system to be dispersed into multiple independent operatings, and each autonomous system is carried out each
Black starting-up, simultaneous interconnecting is carried out after start completion again.
The small-sized wind-light storage electric power system of off-network type and traditional micro-capacitance sensor difference, off-network type electric power system be it is a kind of completely
Depart from bulk power grid and remain a kind of Autonomous Model electric power system of independent operating, sent out by the integrated wind-force near user
Electricity, solar power generation, energy-storage battery equal distribution decline source, provide a user with the electric energy of demand.
Because off-network type wind-light storage electric power system is to completely disengage from bulk power grid operation, therefore, on the one hand meet with extreme length
When phase wind-force is not strong, sunshine is not enough, off-network type electric power system is easier internal paralysis；Another aspect electric power system inside hair
After raw failure or paralysis, also difference is larger for tactful and traditional micro-capacitance sensor black starting-up strategy of black starting-up.
Distributed power supply system black starting-up research in the prior art for wind-light storage one is little, therefore, for off-network
It is significant that the small-sized wind-light storage electric power system of type develops a set of reliable and stable black starting-up control method.
The content of the invention
The distributed power supply system of wind-light storage one there may be the situation of unexpected power-off, it is also possible to exist due to day gas bar
Part limitation stops situation about generating electricity for a long time, seldom considers electric power system in prior art black starting-up control system or method simultaneously
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, it is an object of the invention to provide a kind of system with black starting-up function,
The distributed energy black starting-up side after distributed energy black starting-up and long-term power-off after consideration system has a power failure in a short time 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 method of the 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
Stream bus, the energy storage access device, the generating equipment access device that are connected on dc bus, the system with black starting-up function is also
Including direct current output interface and/or exchange output interface, generating equipment access device is used to access generating equipment, and energy storage accesses dress
Put for accessing energy storage device, the system with black starting-up function also include be connected on dc bus for accessing external electrical
The external power source access device in source, wherein monitoring control devices carry out internal black starting-up or outside 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 outside black starting-up using external power source as black starting-up
Source.
Further, the time of power-off be less than setting value, controller carries out internal black starting-up, and the time of power-off is more than or waits
In setting value, controller carries out outside black starting-up.
Further, internal black starting-up uses the period 1, and outside black starting-up uses second round, and second round is first
The integral multiple in cycle.
The present invention also provides a kind of black-start method of the 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 estimated, and in the event of powering off, the time of power-off is less than setting value, performs
Step (3)；The time of power-off is more than or equal to setting value, performs step (4)；
(3) controller carries out internal black starting-up；
(4) controller carries out outside black starting-up.
Further, step (3) controller carries out internal black starting-up and comprises the following steps：
(31) whether detection energy storage device enters resting state, if being introduced into resting state, performs step (32)；If
Into resting state, step (34) is performed；
(32) work of controller control energy storage access device, makes energy storage device to DC bus powered；
(33) controller control direct current output interface and/or exchange output interface, cut external load；
(34) by after the period 1, the working condition of the generating equipment for accessing being detected, if at least one generating equipment
Normal operation, then control generating equipment to be charged to energy storage device, performs step (1)；If the generating equipment of all accesses is transported
Row is abnormal, performs step (4).
Further, step (4) controller carries out outside black starting-up and comprises the following steps：
(41) by after second round, controller is switched to external cell powering mode；
(42) outside black starting-up is carried out as the main micro battery of black starting-up using external power source；
(43) controller control external power source charges to energy storage device；
(44) controller is switched to energy storage device powering mode, performs step (34).
Further, main micro battery of the step (42) using external power source as black starting-up, carry out outside black starting-up include with
Lower step：
(421) controller control external power source access device, makes external power source to DC bus powered；
(422) controller control direct current output interface and/or exchange output interface, cut external load.
Compared with prior art, the present invention is provided system with black starting-up function and its black-start method, with
Lower beneficial effect：The distributed energy after distributed energy black starting-up and long-term power-off after consideration system has a power failure in a short time simultaneously
Source black-start method, reduces the instantaneous recovery time of power off time and system power supply under grid fault conditions, improves system long-term
The stability and reliability of interior power supply.
The present invention proposes a kind of distributed power supply system for long-term off-grid operation, does not almost have on the market at present；
The present invention includes the black-start scheme after short-term power-off and the black-start scheme after long-term power failure simultaneously, it is ensured that system is reliable and stable
Resume operation.
Brief description of the drawings
Fig. 1 is the structural representation 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 with black starting-up function shown in Fig. 1.
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 to access energy storage device, including energy storage interface, contactor and energy storage DC converter, is used for
Access energy storage device.
Generating equipment access device is used to access generating equipment, and generating equipment access device is photovoltaic access in the present embodiment
Device and blower fan access device, photovoltaic access device includes photovoltaic interface, photovoltaic rectifier and photovoltaic conversion controller, for connecing
Enter photovoltaic power generation equipment；Blower fan access device includes fan interface, blower fan rectifier and blower fan transform controller, for accessing wind
Machine.In other embodiments, generating equipment access device can also be other generating equipment access devices, such as diesel-driven generator
Access device.
System with black starting-up function also includes direct current output interface and exchanges output interface, the connection of direct current output interface
Onto dc bus, for being powered to DC load；Exchange output interface is connected on dc bus by AC converter, is used
Powered in AC load, the system with black starting-up function can also only include direct current output interface, or only include exchange
Output interface, can determine according to concrete application environment.
System with black starting-up function also includes the external power source access device for accessing external power source.
Controller is connected with above-mentioned all parts, to control the operation of all parts.
By the electric power system of the system constructing with black starting-up function in the present embodiment, during 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 dump energy of battery, if the voltage or dump energy of battery are less than setting value, controller control
The photovoltaic rectifier of photovoltaic access device, photovoltaic conversion controller, and/or the blower fan rectifier of blower fan access device, blower fan become
Changer controller, and energy storage DC converter, charge to battery.
Monitoring control devices carry out internal black starting-up or outside black starting-up to powering off, and internal black starting-up is with energy storage device
As the main micro battery of black starting-up, main micro battery of the outside black starting-up using external power source as black starting-up.
Can be according to the length of the time of power-off, it is determined that still starting confession using outside black starting-up using internal black starting-up
Electric system.For power-off of the time less than setting value for powering off, such as setting value is 1 hour, the voltage or dump energy of battery
It is enough to complete black starting-up operation, controller starts electric power system using internal black starting-up；Time for powering off is more than 1 hour
Power-off, the voltage or dump energy of battery may be very low, for protection battery can stop supplying power for outside, in a dormant state, this
When controller start electric power system using outside black starting-up, that is, carry out black starting-up using external power source.
The black-start method of the system with black starting-up function, comprises the following steps in the present embodiment：
(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 estimated, and in the event of powering off, the time of power-off is less than setting value, performs
Step (3)；The time of power-off is more than or equal to setting value, performs step (4)；
(3) controller carries out internal black starting-up；
(4) controller carries out outside black starting-up.
Interdependent node in step (1) in system of the monitoring with black starting-up function, interdependent node specifically refers to photovoltaic and connects
Mouth, fan interface, energy storage interface, dc bus, direct current output interface with exchange output interface.
Step (3) controller carries out internal black starting-up and comprises the following steps：
(31) whether detection energy storage device enters resting state, if being introduced into resting state, performs step (32)；If
Into resting state, step (34) is performed；
(32) work of controller control energy storage access device, makes energy storage device to DC bus powered；
(33) controller control direct current output interface and/or exchange output interface, cut external load；
(34) by after the period 1, the working condition of the generating equipment for accessing being detected, if at least one generating equipment
Normal operation, then control generating equipment to be charged to energy storage device, performs step (1)；If the generating equipment of all accesses is transported
Row is abnormal, performs step (4).
Step (4) controller carries out outside black starting-up and comprises the following steps：
(41) by after second round, controller is switched to external cell powering mode；
(42) outside black starting-up is carried out as the main micro battery of black starting-up using external power source；
(43) controller control external power source charges to energy storage device；
(44) controller is switched to energy storage device powering mode, performs step (34).
Main micro battery of the step (42) using external power source as black starting-up, carries out outside black starting-up and comprises the following steps：
(421) controller control external power source access device, makes external power source to DC bus powered；
(422) controller control direct current output interface and/or exchange output interface, cut external load.
The electric power system of the system constructing with black starting-up function in the present embodiment, controls permanence big within the slow cycle
The black starting-up process of power failure, that is, outside black starting-up；The process of transience black starting-up is monitored and controlled in fast cycle,
It is exactly internal black starting-up.
Wind-light storage electric power system using Inner Mongol trial operation is used as embodiment, but this invention is suitable for being not limited in implementing
Application scenario in example.
The black starting-up whole process of wind-light storage electric power system is divided into before starting, starts three phases after neutralization starts.
The limit weather and weather conditions or other extraneous factors existed due to the Inner Mongol, cause electric power system that long-term lacking is encountered when running
The few light of wind or the long-term operating mode such as have a power failure, therefore internal system black starting-up will be divided into during black starting-up and its exterior is black opens
It is dynamic.
Internal black starting-up uses the period 1, it is also possible to referred to as the fast period, be designated as tf, tf typically takes second or Millisecond
Not, can solve the problem that the problem of the fast quick-recovery of system after suddenly hair property is had a power failure on a large scale.
Outside black starting-up uses second round, it is also possible to the referred to as slow cycle, is designated as Ts, and Ts typically takes hour or day rank,
Wherein Ts=N*Tf, N are positive integer, can solve the problems, such as that the system after long-term power-off is recovered in the way of low energy consumption.
Using different time scales come start-up course in control system inside black starting-up and its 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 anxious to send out the fast quick-recovery of system after property is had a power failure on a large scale；In time domain at a slow speed, to non-
Load Emergency or the micro battery with damping characteristics are flexibly controlled, and carry out outside black starting-up control, after solving long-term power failure
The control problem that power system is restarted.
Preferred embodiment of the invention described in detail above.It should be appreciated that one of ordinary skill in the art without
Need creative work just can make many modifications and variations with design of the invention.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 scheme, all should be in the protection domain being defined in the patent claims.
Claims (7)
1. a kind of system with black starting-up function, it is characterised in that the system with black starting-up function include controller,
Dc bus, the energy storage access device being connected on the dc bus, generating equipment access device, it is described with black starting-up work(
The system of energy also includes direct current output interface and/or exchange output interface, and the generating equipment access device is used to access generating
Equipment, the energy storage access device is used to access energy storage device, and the system with black starting-up function also includes being connected to institute
The external power source access device for accessing external power source on dc bus is stated, wherein the monitoring control devices are disconnected to occurring
Electricity, carries out internal black starting-up or outside black starting-up, master micro- electricity of the internal black starting-up using the energy storage device as black starting-up
Source, main micro battery of the outside black starting-up using the external power source as black starting-up.
2. there is the system of black starting-up function as claimed in claim 1, it is characterised in that the time of power-off is less than setting value,
The controller carries out internal black starting-up, and the time of power-off is more than or equal to setting value, and the controller carries out outside black starting-up.
3. there is the system of black starting-up function as claimed in claim 1, it is characterised in that internal black starting-up is used first week
Phase, outside black starting-up uses second round, and the second round is the integral multiple of the period 1.
4. a kind of black-start method of system with black starting-up function as described in claim any one of 1-3, its feature exists
In 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 estimated, and in the event of powering off, the time of power-off is less than setting value, performs step
(3)；The time of power-off is more than or equal to setting value, performs step (4)；
(3) controller carries out internal black starting-up；
(4) controller carries out outside black starting-up.
5. black-start method as claimed in claim 4, it is characterised in that step (3) described controller carries out internal black starting-up
Comprise the following steps：
(31) whether detection energy storage device enters resting state, if being introduced into resting state, performs step (32)；If into
Resting state, performs step (34)；
(32) the controller control energy storage access device work, makes energy storage device to DC bus powered；
(33) the controller control direct current output interface and/or exchange output interface, cut external load；
(34) by after the period 1, detecting the working condition of the generating equipment for accessing, if at least one generating equipment is run
Normally, then control the generating equipment to be charged to energy storage device, perform step (1)；If the generating equipment of all accesses is transported
Row is abnormal, performs step (4).
6. black-start method as claimed in claim 5, it is characterised in that step (4) described controller carries out outside black starting-up
Comprise the following steps：
(41) by after second round, the controller is switched to external cell powering mode；
(42) outside black starting-up is carried out as the main micro battery of black starting-up using external power source；
(43) the controller control external power source charges to energy storage device；
(44) controller is switched to energy storage device powering mode, performs step (34).
7. black-start method as claimed in claim 6, it is characterised in that master of the step (42) using external power source as black starting-up
Micro battery, carries out outside black starting-up and comprises the following steps：
(421) the controller control external power source access device, makes external power source to DC bus powered；
(422) the controller control direct current output interface and/or exchange 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 |
|---|---|
| CN106712092A true CN106712092A (en) | 2017-05-24 |
| CN106712092B 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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| Country | Link |
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| CN (1) | CN106712092B (en) |
| WO (1) | WO2018137355A1 (en) |
Cited By (7)
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| WO2018137355A1 (en) * | 2017-01-25 | 2018-08-02 | 上海电气分布式能源科技有限公司 | System having black start function, and black start method therefor |
| CN109831023A (en) * | 2019-04-04 | 2019-05-31 | 国网江苏省电力有限公司电力科学研究院 | Middle straightening stream power distribution network black starting-up secondary device power supply unit |
| CN110112766A (en) * | 2019-02-25 | 2019-08-09 | 东华大学 | A kind of factory's micro-capacitance sensor black starting-up system and method |
| CN111416386A (en) * | 2020-04-01 | 2020-07-14 | 广东安朴电力技术有限公司 | Power transmission system and power supply device thereof |
| WO2023274179A1 (en) * | 2021-06-30 | 2023-01-05 | 华为数字能源技术有限公司 | Energy storage apparatus, control method for energy storage apparatus, and photovoltaic system |
| CN115995847A (en) * | 2023-03-22 | 2023-04-21 | 国网湖北省电力有限公司电力科学研究院 | Micro-grid black start method, device, system and storage medium |
| CN118473061A (en) * | 2024-07-11 | 2024-08-09 | 杭州协能科技股份有限公司 | Black start control method of energy storage system |
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| CN112653189B (en) * | 2021-01-20 | 2023-02-03 | 中国电建集团福建省电力勘测设计院有限公司 | Combustion engine black start method based on small combustion engine as black start power supply |
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| CN116073435B (en) * | 2023-03-30 | 2023-07-18 | 西安热工研究院有限公司 | Black start system and method for diesel-engine combined combustion engine |
| 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 |
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| CN115995847B (en) * | 2023-03-22 | 2023-05-23 | 国网湖北省电力有限公司电力科学研究院 | Micro-grid black start method, device, system and storage medium |
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