CN106356892B - Micro-capacitance sensor black-start method - Google Patents
Micro-capacitance sensor black-start method Download PDFInfo
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- CN106356892B CN106356892B CN201610900103.2A CN201610900103A CN106356892B CN 106356892 B CN106356892 B CN 106356892B CN 201610900103 A CN201610900103 A CN 201610900103A CN 106356892 B CN106356892 B CN 106356892B
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Abstract
A kind of micro-capacitance sensor black-start method, comprising: obtain the residual capacity of the energy-storage battery in each micro- source to be launched；Micro- source to be launched that residual capacity in the energy-storage battery in each micro- source to be launched is greater than preset capacity value is generated into black starting-up sequence according to the sequence of its energy-storage battery residual capacity；Obtain the number in micro- source to be launched in the black starting-up sequence；The number in micro- source to be launched in the black starting-up sequence is judged whether within the scope of present count magnitude, if so, successively starting micro- source to be launched in the black starting-up sequence according to the black starting-up sequence；Judge micro- source to be launched in the black starting-up sequence whether start completion；If so, accessing renewable generator unit and load.Above-mentioned micro-capacitance sensor black-start method, it is ensured that there is the enough energy to meet the requirement of access load during black starting-up, improve the efficiency of black starting-up.
Description
Technical field
The present invention relates to the technical fields of electric system, more particularly to a kind of micro-capacitance sensor black-start method.
Background technique
The set that micro-capacitance sensor is made of distributed generation resource, energy-storage units, load and control protective unit is an energy
Enough self-contr ols, protection and the autonomous system of management.According to the connection relationship of micro-capacitance sensor and bulk power grid, micro-capacitance sensor is divided into interconnection type
Micro-capacitance sensor and off-network type micro-capacitance sensor.At present in micro-capacitance sensor, the system self reover function after large-area power-cuts is colloquially called black
Starting.After i.e. so-called black starting-up refers to that whole system is stopped transport because of failure, other web help is not depended on, by having certainly in system
The generating set of starting ability starts, and drives the generating set of non self starting, and the system that is gradually expanded restores range, final real
The recovery of existing whole system.Micro-capacitance sensor black starting-up algorithm is more at present, focuses primarily upon the generation of black starting-up sequence, main power source selection
Control algolithm research after mode, system starting scheme evaluation and starting.
However, traditional all more satisfactory face of micro-capacitance sensor black starting-up algorithm does not account for burst that may be present in start-up course
Situation causes a possibility that starting failure is to fall into program endless loop larger, such as in start-up course after certain equipment access
Cause the system failure to shut down: micro-capacitance sensor may damage certain machine because failure powers off suddenly, if directly removing without personnel's maintenance
Failure accesses micro-capacitance sensor again, may generate impact to system at runtime, and when micro-capacitance sensor off-grid operation, lack bulk power grid
Support, inertia is small, to shock-sensitive, may power off once again.If being handled not to this, black starting-up will cause --- system is disconnected
Electricity --- black starting-up repeatedly, into program endless loop.For another example, power system restoration is powered during off-network black starting-up: very one big
Divide situation, micro-capacitance sensor disconnection fault is to cause unplanned isolated island handover failure since bulk power grid powers off suddenly.If power grid is at once
It restores electricity, then it can be directly according to grid-connected conditions black starting-up；Conversely, then according to off-network condition black starting-up.Since micro-capacitance sensor is supervised
Control system meeting real-time monitoring system state, a possibility that power supply there are power system restoration during off-network black starting-up.At this point, if off-network
Black starting-up program is cut grid-connected program with off-network and is run simultaneously, then may cause serious system concussion.
Summary of the invention
Based on this, it is necessary to the technical issues of for how to improve starting efficiency, provide a kind of micro-capacitance sensor black-start method.
A kind of micro-capacitance sensor black-start method, comprising: obtain the residual capacity of the energy-storage battery in each micro- source to be launched；It will be each
Residual capacity is greater than micro- source to be launched of preset capacity value according to its energy-storage battery in the energy-storage battery in a micro- source to be launched
The sequence of residual capacity generates black starting-up sequence；Obtain the number in micro- source to be launched in the black starting-up sequence；Judgement
Whether the number in micro- source to be launched in the black starting-up sequence is within the scope of present count magnitude, if so, black being opened according to described
Dynamic sequence, successively starts micro- source to be launched in the black starting-up sequence；Judge micro- source to be launched in the black starting-up sequence
Whether start completion；If so, accessing renewable generator unit and access load.
In one of the embodiments, before the residual capacity of the energy-storage battery for obtaining each micro- source to be launched,
Further include: obtain the working condition of micro-capacitance sensor and the busbar voltage of micro-capacitance sensor；Judge whether the working condition is operating status
And whether busbar voltage is less than preset threshold；If being entirely, micro-capacitance sensor is subjected to system initialization；After judging system initialization
Within a preset range whether the voltage and frequency of micro-capacitance sensor；If so, obtaining the residue of the energy-storage battery in each micro- source to be launched
Capacity.
It is described in one of the embodiments, to be greater than residual capacity in the energy-storage battery in each micro- source to be launched in advance
If micro- source to be launched of capability value generates black starting-up sequence according to the sequence of its energy-storage battery residual capacity, comprising: judgement
Whether the residual capacity of the energy-storage battery in each micro- source to be launched is greater than preset capacity value；If so, residual capacity is big
Energy-storage battery in micro- source to be launched of preset capacity value marks；According to the residue of the energy-storage battery in marked micro- source to be launched
The sequence of capacity generates the black starting-up sequence.
Whether the residual capacity of the energy-storage battery for judging each micro- source to be launched in one of the embodiments,
Greater than preset capacity value, comprising: the total capacity for obtaining the energy-storage battery in micro- source to be launched, by the total capacity multiplied by default
Ratio obtains the preset capacity value；Remaining capacity is subtracted into the preset capacity value, obtains capacity difference；Described in judgement
Capacity difference whether nonnegative number；If so, the residual capacity of the energy-storage battery in micro- source to be launched is greater than preset capacity value.
The preset ratio is 40%~60% in one of the embodiments,.
Whether the number for judging micro- source to be launched in the black starting-up sequence is pre- in one of the embodiments,
If within the scope of quantitative value, comprising: the number is subtracted the present count magnitude, obtains number differences；Judge that the quantity is poor
Whether value is greater than 1, if so, the number in micro- source to be launched in the black starting-up sequence is within the scope of the present count magnitude.
It is described according to the black starting-up sequence in one of the embodiments, successively start in the black starting-up sequence
Micro- source to be launched, comprising: judge the system mode in each micro- source to be launched with the presence or absence of abnormal；When there are system mode exceptions
Micro- source to be launched when, close micro- source to be launched；Judge that the voltage of micro-capacitance sensor and frequency are after closing micro- source to be launched
No appearance is abnormal；If it is not, the height then according to the energy-storage battery residual capacity in micro- source to be launched in the black starting-up sequence is suitable
Sequence successively starts the normal micro- source to be launched of each system mode.
Described when there are micro- source to be launched of system mode exception in one of the embodiments, closing should be wait open
Move micro- source, comprising: when there are micro- source to be launched of system mode exception, close the inverter and record in micro- source to be launched
The system mode exception information in micro- source to be launched.
The renewable generator unit of access in one of the embodiments, comprising: obtain in the black starting-up sequence
The control algolithm in each micro- source to be launched, judges whether the control algolithm has frequency modulation and voltage modulation function；If it is not, then starting frequency modulation
Regulation Control algorithm accesses renewable generator unit according to the frequency modulation and voltage modulation control algolithm.
The access load in one of the embodiments, comprising: obtain the output power and the load in micro-capacitance sensor
Power；Judge whether the output power in the micro-capacitance sensor accesses the power of the load；If so, accessing the load.
Above-mentioned micro-capacitance sensor black-start method, the biggish storage of residual capacity in the energy-storage battery by filtering out micro- source to be launched
Micro- source of the energy battery as black starting-up, each micro- source as black starting-up generates black starting-up sequence according to sequence, opens when black
When the number in micro- source to be launched in dynamic sequence is within the scope of present count magnitude, successively start in the black starting-up sequence wait open
It moves micro- source, after micro- source start completion to be launched, accesses renewable generator unit and load, ensure that the mistake in black starting-up
There is the enough energy to meet the requirement of access load in journey, improves the efficiency of black starting-up.
Detailed description of the invention
Fig. 1 is the step schematic diagram of micro-capacitance sensor black-start method in one embodiment；
Fig. 2 is the flow diagram of micro-capacitance sensor black-start method in one embodiment.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.Many details are explained in the following description in order to fully understand this hair
It is bright.But the invention can be embodied in many other ways as described herein, those skilled in the art can be not
Similar improvement is done in the case where violating intension of the present invention, therefore the present invention is not limited by the specific embodiments disclosed below.
For example, a kind of micro-capacitance sensor black-start method, comprising: obtain the remaining of the energy-storage battery in each micro- source to be launched and hold
Amount；Residual capacity in the energy-storage battery in each micro- source to be launched is greater than micro- source to be launched of preset capacity value according to its storage
The sequence of energy battery remaining power generates black starting-up sequence；Obtain in micro- source to be launched in the black starting-up sequence
Number；The number in micro- source to be launched in the black starting-up sequence is judged whether within the scope of present count magnitude, if so, according to institute
Black starting-up sequence is stated, micro- source to be launched in the black starting-up sequence is successively started；Judge in the black starting-up sequence wait open
Move micro- source whether start completion；If so, accessing renewable generator unit and access load.
Referring to Fig. 1, its step schematic diagram for micro-capacitance sensor black-start method 10 in one embodiment, for example, micro-capacitance sensor
Black-start method 10 includes step S101~step S107.Micro-capacitance sensor black-start method 10 in order to better understand the present invention,
It is the flow diagram of micro-capacitance sensor black-start method in one embodiment, to micro-capacitance sensor black starting-up side of the invention in conjunction with Fig. 2
Method 10 makes clear and complete explanation.For example, micro-capacitance sensor black-start method 10 includes the following steps:
Step S101: the residual capacity of the energy-storage battery in each micro- source to be launched is obtained.
Specifically, usually micro- source is divided into according to whether there is self-startup ability there are many micro- source hybrid power supply in micro-capacitance sensor
Two kinds: first is that with self-startup ability micro- source, including energy-storage battery, fuel cell, diesel-driven generator, miniature gas turbine,
Flywheel, super capacitor, small power station；Second is that micro- source of non self starting, predominantly various renewable generator units, such as wind-powered electricity generation and
Photovoltaic.
The micro- source of black starting-up should have self-startup ability, while be considered as other according to alternatively condition, as unit load,
Frequency modulation and voltage modulation ability, dynamic responding speed.Since energy-storage battery accesses micro-capacitance sensor, dynamic responding speed by inverter interface
Fastly, frequency modulation and voltage modulation performance is good, therefore under the conditions of capacity meets burden requirement, energy-storage battery is generally selected as the micro- source of black starting-up, bavin
Fry dried food ingredients motor is as main standby.In system there are when multiple groups energy-storage battery, select residual capacity (SOC) highest unit as
The micro- source of black starting-up.When energy-storage battery capacity is unable to satisfy the requirement of important load, start stand-by unit as the micro- source of black starting-up.
To enable different black starting-up algorithms according to different conditions, in an embodiment, each micro- source to be launched is obtained described
Energy-storage battery residual capacity before, further includes:
Step 1): the working condition of micro-capacitance sensor and the busbar voltage of micro-capacitance sensor are obtained.
Specifically, judging electric network state, different black starting-up algorithms are enabled according to different conditions.If power grid has electricity, directly
Judgment step can be greatly simplified by starting grid-connected black starting-up algorithm, shorten the starting time.If power grid is out of power, during off-network
Restore electricity, the algorithm can to avoid synchronized in start-up course it is grid-connected caused by program conflict and impact.
Step 2): judge whether the working condition is operating status and whether busbar voltage is less than preset threshold.
Specifically, judging micro-capacitance sensor current operating conditions in the present embodiment.Only when micro-capacitance sensor is in operating status and bus
When voltage is less than 10V, start black starting-up algorithm.It is further to sentence for example, judging whether the working condition is operating status
Whether disconnected busbar voltage is less than preset threshold.
If detecting, micro-capacitance sensor is powered off, and should be run the power supply of black starting-up program recovery in time, how be judged that micro-capacitance sensor has been in
Off-position is primary link.Its basic detection principle is that micro-capacitance sensor is in operating status but micro-capacitance sensor busbar voltage is zero.It is real
When border operates, to avoid sensor detection error, Rule of judgment is expanded as into micro-capacitance sensor busbar voltage less than 10V.
Step 3): if being entirely, micro-capacitance sensor is subjected to system initialization.
Specifically, the system initialization in the present embodiment, disconnects breaker at point of common coupling even if referring to, excision is all
Load, all micro- source shuts down and removes fault message.
After micro-grid system is stopped transport, to avoid possible safety accident during black starting-up, whole system should be initialized.
Its particular content includes: one, disconnects breaker at point of common coupling, and mode decision mistake causes not synchronize when preventing micro- source from starting
It is grid-connected, cause rush of current；Two, whole loads are cut off, are prevented because load is excessive, in start-up course caused by micro- source off-capacity
Starting failure；Three, all micro- source shuts down and removes fault message, prepares sequentially Leie time starting.
Step 4): within a preset range whether the voltage and frequency of the micro-capacitance sensor after judging system initialization.
Specifically, the voltage and frequency of the micro-capacitance sensor after system initialization can change, each period pair is needed at this time
Electric network state is detected, and within a preset range whether the voltage and frequency of the micro-capacitance sensor after judging system initialization.It can manage
Solution executes if power grid restores electricity when black starting-up starts according to grid-connected black-start scheme, and it is disconnected to be first closed point of common coupling
Road device, the micro- source of black starting-up starts according to cutting-in control algorithm, then accesses renewable generator unit, finally accesses each type load；Such as
Power grid does not restore when fruit black starting-up starts, then executes according to off-network black-start scheme, starts according to off-network black starting-up sequence each
Micro- source.If power system restoration is powered in start-up course, presynchronization algorithm is not enabled, is realized again to black starting-up completion grid-connected.
Under off-network black starting-up mode, it should judge whether system voltage and frequency are located after the micro- source starting of each black starting-up
In normal range (NR).If system voltage and frequency anomaly after certain micro- source starting, the equipment also disorderly closedown is then closed so micro-
Source restarts black starting-up algorithm, and skips the trouble unit, until system operates normally.Currently, during off-network black starting-up
Power system restoration power supply: a big chunk situation, micro-capacitance sensor disconnection fault are to cause unplanned isolated island since bulk power grid powers off suddenly
Handover failure.If power grid restores electricity, can be directly according to grid-connected conditions black starting-up at once；Anyway, then according to off-network item
Part black starting-up.Due to micro-capacitance sensor monitoring system meeting real-time monitoring system state, there are power system restorations during off-network black starting-up to supply
A possibility that electric.At this point, running simultaneously if off-network black starting-up program cuts grid-connected program with off-network, serious system may cause
Concussion.It needs to guarantee after the completion of off-network black starting-up program, then carries out the switching of simultaneously off-network mode.
Step 5): if so, obtaining the residual capacity of the energy-storage battery in each micro- source to be launched.
Specifically, the voltage and frequency that judge the micro-capacitance sensor after system initialization within a preset range when, obtain it is each to
Start the residual capacity of the energy-storage battery in micro- source.
Step S102: by residual capacity in the energy-storage battery in each micro- source to be launched greater than preset capacity value wait open
It moves micro- source and generates black starting-up sequence according to the sequence of its energy-storage battery residual capacity.
Specifically, successively starting micro- source according to black starting-up sequence: first successively starting each storage on earth by height according to residual capacity
It can unit；If if causing the system failure to shut down after the starting of certain equipment, it is removed from initiating sequence re-start again it is black
Starting.
Under grid-connected black starting-up mode, single device starting failure not will cause the system failure, it is only necessary to record in start-up course
Micro- source information of failure.But under off-network mode, since micro-capacitance sensor may damage certain machine because failure powers off suddenly, if nobody
Member's maintenance directly removes failure and accesses micro-capacitance sensor again, may generate impact to system at runtime, and micro-capacitance sensor off-network is transported
When row, lack bulk power grid support, inertia is small, to shock-sensitive, may power off once again.If being handled not to this, will cause
Black starting-up --- system cut-off --- black starting-up repeatedly, into program endless loop.If therefore causing after certain equipment accesses
The system failure, then should remove it, then re-start black starting-up step from black starting-up sequence.
It is described that residual capacity in the energy-storage battery in each micro- source to be launched is greater than preset capacity value in one embodiment
Micro- source to be launched generate black starting-up sequence according to the sequence of its energy-storage battery residual capacity, comprising: judgement is each described
Whether the residual capacity of the energy-storage battery in micro- source to be launched is greater than preset capacity value；If so, residual capacity is greater than default hold
The energy-storage battery in micro- source to be launched of magnitude marks；According to the height of the residual capacity of the energy-storage battery in marked micro- source to be launched
Low sequence generates the black starting-up sequence.
In one embodiment, it is default whether the residual capacity of the energy-storage battery for judging each micro- source to be launched is greater than
Capability value, comprising: the total capacity for obtaining the energy-storage battery in micro- source to be launched is obtained by the total capacity multiplied by preset ratio
To the preset capacity value；Remaining capacity is subtracted into the preset capacity value, obtains capacity difference；Judge the capacity difference
Whether nonnegative number；If so, the residual capacity of the energy-storage battery in micro- source to be launched is greater than preset capacity value.
In one embodiment, the preset ratio is 40%~60%.Specifically, having black start-up ability under off-network mode
Micro- source should meet two conditions, and 1. residual capacity is higher, is set as 40% or more.2. there is no equipment faults.Micro-grid system
In actually meet this condition micro- source share i platform, then should recycle execution i time start and decision instruction.If i less than 1, illustrates
The micro- source for not meeting condition in system, then open stand-by unit.If there is at least a micro- source meets condition, then circulation is opened one by one
Open equipment.One micro- source of every unlatching, will judge whether the voltage of micro-capacitance sensor and frequency are in normal range (NR), the micro-source inverter
Whether starting is successful.If micro- source starting failure after starting, but micro-grid system is not caused to collapse, then it can continue under starting
One micro- source only records the failed machines fault message；If micro- source starting fails and causes system crash after starting, make
The voltage and frequency of foundation are more than normal range of operation, then should reject the equipment, generate new black starting-up sequence, re-execute black
Startup program.
Step S103: the number in micro- source to be launched in the black starting-up sequence is obtained.
Specifically, residual capacity is greater than the to be launched micro- of preset capacity value in the energy-storage battery in each micro- source to be launched
The quantity in source is few, can be convenient the number for rapidly calculating micro- source to be launched in the black starting-up sequence, to obtain
The number in micro- source to be launched into the black starting-up sequence.
Step S104: judge the number in micro- source to be launched in the black starting-up sequence whether in present count magnitude range
It is interior.
Specifically, whether the number for judging micro- source to be launched in the black starting-up sequence is in present count magnitude range
It is interior, comprising: the number is subtracted into the present count magnitude, obtains number differences；Judge whether the number differences are greater than 1,
If so, the number in micro- source to be launched in the black starting-up sequence is within the scope of the present count magnitude.
Step S105: if so, according to the black starting-up sequence, successively start to be launched micro- in the black starting-up sequence
Source.
Specifically, it is described according to the black starting-up sequence, successively start micro- source to be launched in the black starting-up sequence, wraps
It includes: judging the system mode in each micro- source to be launched with the presence or absence of abnormal；When there are micro- sources to be launched of system mode exception
When, close micro- source to be launched；Judge whether the voltage of micro-capacitance sensor and frequency exception occur after closing micro- source to be launched；If
It is no, then successively start according to the sequence of the energy-storage battery residual capacity in micro- source to be launched in the black starting-up sequence each
The normal micro- source to be launched of system mode.
It is described when there are micro- source to be launched of system mode exception in one embodiment, micro- source to be launched is closed, is wrapped
It includes: when there are micro- source to be launched of system mode exception, closing the inverter in micro- source to be launched and to record this to be launched
The system mode exception information in micro- source.
Step S106: judge micro- source to be launched in the black starting-up sequence whether start completion.
Specifically, the number in micro- source to be launched in the black starting-up sequence is labeled as i, assignment a is equal to 1；Starting institute
A-th of micro- source to be launched in black starting-up sequence is stated, judges whether a-th of micro- source to be launched starts success, if so, judging a
Whether i is equal to, when the value of a is different with the value of i, assignment a is equal to a and adds 1, and continues to execute in the starting black starting-up sequence
A-th of micro- source to be launched, until when a is equal to i, execute judge micro- source to be launched in the black starting-up sequence number whether
Within the scope of present count magnitude；If it is not, then closing micro- source to be launched, the electricity of the micro-capacitance sensor after closing micro- source to be launched is judged
Whether pressure and frequency are in preset threshold range；If so, judge whether a is equal to i, and when the value of a is different with the value of i, assignment a
Equal to a plus 1, and a-th of the micro- source to be launched started in the black starting-up sequence is continued to execute, until execution is sentenced when a is equal to i
Whether the number in micro- source to be launched in the black starting-up sequence of breaking is within the scope of present count magnitude.If this is to be launched micro- closing
The voltage and frequency of micro-capacitance sensor behind source are then executed by step S101 since newly not in preset threshold range, until closing
Circulation terminates when the voltage and frequency of micro-capacitance sensor after closing micro- source to be launched are in preset threshold range.
Step S107: if so, accessing renewable generator unit and access load.
Specifically, after micro-capacitance sensor re-establishes, should first start frequency modulation and voltage modulation algorithm, then access renewable under off-network mode
Generator unit and load.According to the difference of micro- source control algolithm, access load is likely to result in micro-capacitance sensor frequency voltage and relatively slumps
It falls.If the micro- source of black starting-up is controlled using VF, has frequency modulation and voltage modulation ability in itself.If the micro- source of black starting-up uses sagging control,
Need to enable frequency modulation and voltage modulation algorithm.
The renewable generator unit of access, comprising: obtain the control in each micro- source to be launched in the black starting-up sequence
Algorithm processed, judges whether the control algolithm has frequency modulation and voltage modulation function；If it is not, then start frequency modulation and voltage modulation control algolithm, according to
The frequency modulation and voltage modulation control algolithm accesses renewable generator unit.Specifically, first accessing renewable hair after micro-capacitance sensor operates normally
Electric unit, it is convenient that load capacity is estimated.Operated normally in micro-capacitance sensor, after voltage and frequency reach requirement, start by
The one renewable generator unit of access, such as photovoltaic and blower.
For example, the access load, comprising: obtain the power of the output power and the load in micro-capacitance sensor；Judge institute
State the power whether output power in micro-capacitance sensor meets the load；If so, accessing the load.Specifically, grid-connected open
Whole loads can be accessed during dynamic.If whole loads can not be supplied in off-network start-up course, according to load significance level,
It accesses step by step.Electric system classifies to load according to the significance level of load, and one type load and two type loads should be
Access system first during black starting-up, gradually restores the power supply to three type loads again after stable operation.According to current micro-capacitance sensor
The performance number that interior micro- source can issue calculates accessible three classes load power, and puts into corresponding load.If the residue of energy-storage units
Capacity is less, for the supply for guaranteeing important load, only accesses three type load of part.
Advantages of the present invention: passing through above-mentioned micro-capacitance sensor black-start method, and black starting-up process is completed, can normally be transported
Row is dispatched, and the biggish energy-storage battery of residual capacity is as the micro- of black starting-up in the energy-storage battery by filtering out micro- source to be launched
Source, each micro- source as black starting-up generates black starting-up sequence according to sequence, when micro- source to be launched in black starting-up sequence
Number within the scope of present count magnitude when, successively start micro- source to be launched in the black starting-up sequence, micro- source to be launched is opened
After the completion of dynamic, renewable generator unit and load are accessed, ensure that has the enough energy during black starting-up
The requirement for meeting access load, improves the efficiency of black starting-up.
By judging electric network state, different black starting-up algorithms are enabled according to different conditions.If power grid has electricity, directly initiate
Grid-connected black starting-up algorithm can greatly simplify judgment step, shorten the starting time.If power grid is out of power, restore during off-network
Power supply, the algorithm can to avoid synchronized in start-up course it is grid-connected caused by program conflict and impact.In off-network start-up course,
One micro- source of every starting all carries out the detection again of system mode, can be to avoid because of system repeatedly black starting-up caused by starting unsuccessfully
Program endless loop.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (9)
1. a kind of micro-capacitance sensor black-start method, comprising:
Obtain the residual capacity of the energy-storage battery in each micro- source to be launched；
Residual capacity in the energy-storage battery in each micro- source to be launched is greater than micro- source to be launched of preset capacity value according to it
The sequence of energy-storage battery residual capacity generates black starting-up sequence；
Obtain the number in micro- source to be launched in the black starting-up sequence；
Judge the number in micro- source to be launched in the black starting-up sequence whether within the scope of present count magnitude,
If so, successively starting micro- source to be launched in the black starting-up sequence according to the black starting-up sequence；
Judge micro- source to be launched in the black starting-up sequence whether start completion；
If so, accessing renewable generator unit and access load；
Whether the number for judging micro- source to be launched in the black starting-up sequence is within the scope of present count magnitude, comprising:
The number is subtracted into the present count magnitude, obtains number differences；
Judge whether the number differences are greater than 1,
If so, the number in micro- source to be launched in the black starting-up sequence is within the scope of the present count magnitude；
The renewable generator unit of access, comprising: the control for obtaining each micro- source to be launched in the black starting-up sequence is calculated
Method, judges whether the control algolithm has frequency modulation and voltage modulation function；If it is not, then starting frequency modulation and voltage modulation control algolithm, according to described
Frequency modulation and voltage modulation control algolithm accesses renewable generator unit；
The access load, comprising: obtain the power of the output power and the load in micro-capacitance sensor；Judge in the micro-capacitance sensor
Output power whether meet the power of the load；If so, accessing the load；Specifically, can in grid-connected start-up course
To access whole loads.
2. micro-capacitance sensor black-start method according to claim 1, which is characterized in that obtain each micro- source to be launched described
Energy-storage battery residual capacity before, further includes:
Obtain the working condition of micro-capacitance sensor and the busbar voltage of micro-capacitance sensor；
Judge whether the working condition is operating status and whether busbar voltage is less than preset threshold；
If being entirely, micro-capacitance sensor is subjected to system initialization；
Within a preset range whether the voltage and frequency of the micro-capacitance sensor after judging system initialization；
If so, obtaining the residual capacity of the energy-storage battery in each micro- source to be launched.
3. micro-capacitance sensor black-start method according to claim 1, which is characterized in that described by each micro- source to be launched
Energy-storage battery in residual capacity be greater than preset capacity value micro- source to be launched it is suitable according to the height of its energy-storage battery residual capacity
Sequence generates black starting-up sequence, comprising:
Judge whether the residual capacity of the energy-storage battery in each micro- source to be launched is greater than preset capacity value；
If so, the energy-storage battery that residual capacity is greater than micro- source to be launched of preset capacity value is marked；
According to the sequence of the residual capacity of the energy-storage battery in marked micro- source to be launched, the black starting-up sequence is generated.
4. micro-capacitance sensor black-start method according to claim 3, which is characterized in that the judgement is each described to be launched micro-
Whether the residual capacity of the energy-storage battery in source is greater than preset capacity value, comprising:
The total capacity of the energy-storage battery in micro- source to be launched is obtained,
By the total capacity multiplied by preset ratio, the preset capacity value is obtained；
Remaining capacity is subtracted into the preset capacity value, obtains capacity difference；
Judge the capacity difference whether nonnegative number；
If so, the residual capacity of the energy-storage battery in micro- source to be launched is greater than preset capacity value.
5. micro-capacitance sensor black-start method according to claim 4, which is characterized in that the preset ratio be 40%~
60%.
6. micro-capacitance sensor black-start method according to claim 1, which is characterized in that it is described according to the black starting-up sequence,
Successively start micro- source to be launched in the black starting-up sequence, comprising:
Judge the system mode in each micro- source to be launched with the presence or absence of abnormal；
When there are micro- source to be launched of system mode exception, micro- source to be launched is closed；
Judge whether the voltage of micro-capacitance sensor and frequency exception occur after closing micro- source to be launched；
If it is not, then successively being opened according to the sequence of the energy-storage battery residual capacity in micro- source to be launched in the black starting-up sequence
Move the normal micro- source to be launched of each system mode.
7. micro-capacitance sensor black-start method according to claim 6, which is characterized in that described when there are system mode exceptions
Micro- source to be launched when, close micro- source to be launched, comprising:
When there are micro- source to be launched of system mode exception, closes the inverter in micro- source to be launched and to record this to be launched
The system mode exception information in micro- source.
8. micro-capacitance sensor black-start method according to claim 1, which is characterized in that the renewable generator unit of access,
Include:
The control algolithm in each micro- source to be launched in the black starting-up sequence is obtained,
Judge whether the control algolithm has frequency modulation and voltage modulation function；
If it is not, then start frequency modulation and voltage modulation control algolithm,
Renewable generator unit is accessed according to the frequency modulation and voltage modulation control algolithm.
9. micro-capacitance sensor black-start method according to claim 1, which is characterized in that the access load, comprising:
Obtain the power of the output power and the load in micro-capacitance sensor；
Judge whether the output power in the micro-capacitance sensor meets the power of the load；
If so, accessing the load.
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| CN109217348B (en) * | 2017-06-29 | 2024-03-08 | 周锡卫 | Control method of black start device of wind-light power supply micro-grid |
| CN109617124A (en) * | 2018-12-29 | 2019-04-12 | 中冶南方都市环保工程技术股份有限公司 | A kind of flexible load control method and system in island network black starting-up |
| 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 |
| CN110266054B (en) * | 2019-07-30 | 2021-01-08 | 阳光电源股份有限公司 | Off-grid starting method for light storage power generation system, light storage power generation equipment and system |
| CN113675876B (en) * | 2020-05-14 | 2023-09-08 | 南京南瑞继保电气有限公司 | Automatic black start control method for micro-grid |
| CN112366680B (en) * | 2020-09-22 | 2024-01-26 | 桑河二级水电有限公司 | Power failure self-recovery method for whole factory of station service under weak power network without external power supply |
| CN112260313B (en) * | 2020-10-13 | 2023-09-01 | 国网冀北电力有限公司承德供电公司 | Distributed photovoltaic system and control terminal thereof |
| CN113098062A (en) * | 2021-04-12 | 2021-07-09 | 中国恩菲工程技术有限公司 | Method and device for controlling black start of microgrid, electronic equipment and storage medium |
| CN114301050B (en) * | 2021-11-16 | 2024-04-19 | 科华数据股份有限公司 | Control method, terminal and storage medium of uninterruptible power supply rectifying module |
| CN114597972B (en) * | 2022-03-28 | 2023-04-04 | 国网北京市电力公司 | Photo-thermal and gas complementary micro-grid structure and black start method |
| WO2024065656A1 (en) * | 2022-09-30 | 2024-04-04 | 宁德时代未来能源(上海)研究院有限公司 | Energy storage system, power transmission system, control method, control unit, and storage medium |
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