CN106549407B - The control method and equipment of super capacitor in micro-capacitance sensor - Google Patents
The control method and equipment of super capacitor in micro-capacitance sensor Download PDFInfo
- Publication number
- CN106549407B CN106549407B CN201611234479.0A CN201611234479A CN106549407B CN 106549407 B CN106549407 B CN 106549407B CN 201611234479 A CN201611234479 A CN 201611234479A CN 106549407 B CN106549407 B CN 106549407B
- Authority
- CN
- China
- Prior art keywords
- voltage
- super capacitor
- micro
- capacitance sensor
- real
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/14—District level solutions, i.e. local energy networks
Abstract
The present invention provides the control method and equipment of the super capacitor in a kind of micro-capacitance sensor, and the control method of the super capacitor includes: the real-time voltage and real-time current of detection unit detection micro-capacitance sensor bus；Realtime power calculates unit and is based on the real-time voltage and real-time current calculating active power and reactive power；Control of discharge unit discharges according to the active power and the Reactive Power Control super capacitor, to adjust the voltage of micro-capacitance sensor bus.Super capacitor is controlled using the control method of the super capacitor in micro-capacitance sensor according to an exemplary embodiment of the present invention, super capacitor quick start advantage can be given full play to, when micro-capacitance sensor fluctuates, busbar voltage can be made rapidly to restore normally, can preferably improve power quality.
Description
Technical field
The present invention relates to micro-capacitance sensor control fields, and in particular, to a kind of control method of the super capacitor in micro-capacitance sensor
And equipment.
Background technique
It is devoted to the construction of micro-capacitance sensor both at home and abroad at present, and improves and solve the electric energy generated during micro-grid connection
Quality problems.Supercapacitor can stabilize transient swing, improve power quality, provide as a kind of power-type energy storage technology
Short-time energy is played a very important role to micro-capacitance sensor is stablized.
Super capacitor is a kind of electrochemical element, and thermal energy storage process does not chemically react, and thermal energy storage process is reversible,
Therefore supercapacitor repeated charge can achieve hundreds of thousands of times, and the service life not will cause environmental pollution up to 10 years or more.Separately
Outside, it has very high power density, is 10~100 times of battery, is suitable for short time high-power output, charging rate
Fastly, mode is simple, can use large current charge, can complete charging process in tens seconds to several minutes, be truly
Quick charge.The electrochemical reaction occurred in charge and discharge process has good invertibity, and cryogenic property is superior, super capacitor
The electric charge transfer that occurs in charge and discharge process is most of all to be carried out on electrode active material surface, capacity with temperature decaying very
It is small.
Applied to the control strategy of super capacitor, role is unsatisfactory in terms of improving power quality at present.
Summary of the invention
The purpose of the present invention is to provide a kind of control method of the super capacitor in micro-capacitance sensor and equipment, existing to solve
Control strategy in terms of improving power quality the unsatisfactory technical problem of role.
A kind of control method of super capacitor in micro-capacitance sensor, the super electricity are provided according to the first aspect of the invention
The control method of appearance includes: the real-time voltage and real-time current of detection unit detection micro-capacitance sensor bus；Realtime power calculates unit
Active power and reactive power are calculated based on the real-time voltage and the real-time current；Control of discharge unit is according to described active
Power and Reactive Power Control super capacitor electric discharge, to adjust the voltage of micro-capacitance sensor bus.
Optionally, the step of control super capacitor electric discharge includes: phase calculation unit according to the active power, given
Active power, the rated frequency of micro-capacitance sensor calculate the phase angle of super capacitor output voltage；Voltage magnitude computing unit is according to
Reactive power, given reactive power, the voltage rating of micro-capacitance sensor calculate the amplitude of super capacitor output voltage；Control of discharge list
Member controls super capacitor electric discharge according to the phase angle of the super capacitor output voltage of calculating and amplitude, to adjust micro-capacitance sensor bus
Voltage.
Optionally, the step of calculating the phase angle of super capacitor output voltage includes: phase calculation unit according to described active
The rated frequency of power, given active power and micro-capacitance sensor calculates frequency droop coefficient, and according to the frequency droop system of calculating
Several and micro-capacitance sensor rated frequency calculates the phase angle of super capacitor output voltage.
Optionally, the step of calculating the amplitude of super capacitor output voltage includes: voltage magnitude computing unit according to
The voltage rating of reactive power, given reactive power and micro-capacitance sensor calculates the sagging coefficient of voltage, and according under the voltage of calculating
The voltage rating of vertical coefficient and micro-capacitance sensor calculates the amplitude of super capacitor output voltage.
Optionally, super capacitor electric discharge is controlled, according to the phase angle of the super capacitor output voltage of calculating and amplitude to adjust
The step of saving the voltage of micro-capacitance sensor bus includes: phase angle and width of the voltage reference value computing unit based on super capacitor output voltage
Value calculates d axis reference voltage and q axis reference voltage；Control of discharge unit is anti-according to the d axis reference voltage and d axis positive sequence voltage
Feedback and the q axis reference voltage and q axis positive sequence voltage feedback calculate the positive-sequence component of space vector pulse width modulation, so that micro- electricity
The positive-sequence component of the voltage of net bus is within rated range, the d axis positive sequence voltage feedback and q axis positive sequence voltage feedback
It is that the real-time voltage is subjected to positive-sequence component obtained from positive-negative sequence extraction；Control of discharge unit is anti-according to d axis negative sequence voltage
Feedback and q axis negative sequence voltage feedback calculate the negative sequence component of space vector pulse width modulation, with the voltage for compensating micro-capacitance sensor bus
And eliminate the negative sequence component of the voltage of micro-capacitance sensor bus, d axis negative sequence voltage feedback and q axis negative sequence voltage feedback be by
The real-time voltage carries out negative sequence component obtained from positive-negative sequence extraction.
Optionally, the step of calculating active power and reactive power includes: that realtime power calculates unit for the real-time electricity
Pressure and the real-time current carry out Clarke reference axis conversion and Parker's reference axis conversion, and according to Clarke reference axis conversion and
Real-time voltage and real-time current after the conversion of Parker's reference axis calculate the active power and the reactive power.
Optionally, the control method of the super capacitor further include: detection unit detects the charge of the storage of super capacitor
Whether amount is less than predetermined value；When the quantity of electric charge of super capacitor storage is less than the predetermined value, control unit controls super capacitor
Stop electric discharge；When the quantity of electric charge of super capacitor storage is greater than the predetermined value, it is female to return to detection unit execution detection micro-capacitance sensor
The step of real-time voltage and real-time current of line.
A kind of control equipment of super capacitor, the control equipment packet of the super capacitor are provided according to another aspect of the present invention
Including includes: detection unit, detects the real-time voltage and real-time current of micro-capacitance sensor bus；Realtime power calculates unit, based on described
Real-time voltage and the real-time current calculate active power and reactive power；Control of discharge unit, according to the active power and
The Reactive Power Control super capacitor electric discharge, to adjust the voltage of micro-capacitance sensor bus.
Optionally, control of discharge unit includes: phase calculation unit, according to the active power, given active power,
The rated frequency of micro-capacitance sensor calculates the phase angle of super capacitor output voltage；Voltage magnitude computing unit, according to the reactive power,
The amplitude of given reactive power, the voltage rating of micro-capacitance sensor calculating super capacitor output voltage；Wherein, control of discharge unit root
Super capacitor electric discharge is controlled, according to the phase angle and amplitude of the super capacitor output voltage of calculating to adjust the electricity of micro-capacitance sensor bus
Pressure.
Optionally, phase calculation unit is according to the active power, the rated frequency of given active power and micro-capacitance sensor
Frequency droop coefficient is calculated, and super capacitor output electricity is calculated according to the rated frequency of the frequency droop coefficient of calculating and micro-capacitance sensor
The phase angle of pressure.
Optionally, voltage magnitude computing unit is according to the specified of the reactive power, given reactive power and micro-capacitance sensor
Voltage calculates the sagging coefficient of voltage, and defeated according to the voltage rating of the sagging coefficient of the voltage of calculating and micro-capacitance sensor calculating super capacitor
The amplitude of voltage out.
Optionally, control of discharge unit further include: voltage reference value computing unit, the phase based on super capacitor output voltage
Angle and amplitude calculate d axis reference voltage and q axis reference voltage；Wherein, control of discharge unit is according to the d axis reference voltage and d
Axis positive sequence voltage feedback and the q axis reference voltage and q axis positive sequence voltage feedback calculate the positive sequence of space vector pulse width modulation
Component, so that the positive-sequence component of the voltage of micro-capacitance sensor bus, within rated range, the d axis positive sequence voltage is fed back and the q
Axis positive sequence voltage feedback is that the real-time voltage is carried out positive-sequence component obtained from positive-negative sequence extraction；Control of discharge unit according to
D axis negative sequence voltage feedback and q axis negative sequence voltage feedback calculate the negative sequence component of space vector pulse width modulation, for compensating micro- electricity
The voltage of net bus and eliminate micro-capacitance sensor bus voltage negative sequence component, d axis negative sequence voltage feedback and the q axis negative phase-sequence
Voltage Feedback is that the real-time voltage is carried out negative sequence component obtained from positive-negative sequence extraction.
Optionally, realtime power calculates unit and the real-time voltage and the real-time current is carried out Clarke reference axis turn
It changes and is converted with Parker's reference axis, and according to the real-time voltage and electricity in real time after the conversion of Clarke reference axis and the conversion of Parker's reference axis
Active power described in stream calculation and the reactive power.
Optionally, whether the quantity of electric charge that detection unit also detects the storage of super capacitor is less than predetermined value；Work as super capacitor
When the quantity of electric charge of storage is less than the predetermined value, control unit controls super capacitor and stops electric discharge；When the electricity of super capacitor storage
When lotus amount is greater than the predetermined value, detection unit continues to test the real-time voltage and real-time current of micro-capacitance sensor bus.
Super electricity is controlled using the control method of the super capacitor in micro-capacitance sensor according to an exemplary embodiment of the present invention
Hold, super capacitor quick start advantage can be given full play to, when micro-capacitance sensor fluctuates, busbar voltage can be made rapidly to restore just
Often, power quality can preferably be improved.
In addition, the control method of the super capacitor in the micro-capacitance sensor of an exemplary embodiment of the present invention is super to control
Capacitor, super capacitor controller have the function of plug and play, it is only necessary to be changed according to the variation of voltage on bus and frequency super
The power output of grade capacitor itself, to stablize the voltage and frequency of bus.
In addition, the control method of the super capacitor in the micro-capacitance sensor of an exemplary embodiment of the present invention is super to control
Capacitor eliminates communication time, does not acquire remaining master because super capacitor is no and remaining distributed generation resource is communicated
The power output of power supply, the acquisition for eliminating nearly 1 cycle calculate the time, can be than current super capacitor control mode speed more
Fastly.
In addition, the control method of the super capacitor in the micro-capacitance sensor of an exemplary embodiment of the present invention is super to control
Capacitor can allow super capacitor to enter linear operating region by the way that reasonable sagging coefficient is arranged.
Part in following description is illustrated into the other aspect and/or advantage of the present invention, some is by retouching
Stating will be apparent, or can learn by implementation of the invention.
Detailed description of the invention
By the detailed description carried out below in conjunction with the accompanying drawings, above and other objects of the present invention, features and advantages will
It becomes more fully apparent, in which:
Fig. 1 is the block diagram of the control equipment of the super capacitor of the micro-capacitance sensor of an exemplary embodiment of the present invention；
Fig. 2 is the flow chart of the control method of the super capacitor in the micro-capacitance sensor of an exemplary embodiment of the present invention；
Fig. 3 is that the realtime power of the control equipment of the super capacitor of an exemplary embodiment of the present invention calculates unit
Block diagram；
Fig. 4 is the example graph of the sagging control of voltage of an exemplary embodiment of the present invention；
Fig. 5 is the example graph of the frequency droop control of an exemplary embodiment of the present invention；
Fig. 6 is the frame of the phase calculation unit of the control equipment of the super capacitor of an exemplary embodiment of the present invention
Figure；
Fig. 7 is the voltage magnitude computing unit of the control equipment of the super capacitor of an exemplary embodiment of the present invention
Block diagram；
Fig. 8 is the voltage reference value computing unit of the control equipment of the super capacitor of an exemplary embodiment of the present invention
Block diagram；
Fig. 9 is the positive sequence voltage outer ring of an exemplary embodiment of the present invention and the frame of current inner loop Double-loop Control Strategy
Figure；
Figure 10 is the negative sequence voltage outer ring and current inner loop Double-loop Control Strategy of an exemplary embodiment of the present invention
Block diagram；
Figure 11 is the structural block diagram of the micro-capacitance sensor of an exemplary embodiment of the present invention；
Figure 12 is the current temporary state curve graph in the sensitive load cut process of an exemplary embodiment of the present invention；
Figure 13 is the voltage transient curve graph in the sensitive load cut process of an exemplary embodiment of the present invention.
Specific embodiment
As needed, it is disclosed specific embodiment of the invention；It will be understood, however, that the disclosed embodiments are only
It is example of the invention, wherein the present invention can be realized with various alternative forms.Attached drawing is not necessarily to scale；Some spies
Sign can be exaggerated or minimized to show the details of specific components.Therefore, specific structure and function details disclosed herein are not answered
Be interpreted as having it is restricted, and only as instructing those skilled in the art to utilize representativeness of the invention in a variety of forms
Basis.
Fig. 1 shows the block diagram of the control equipment of the super capacitor in the micro-capacitance sensor of an exemplary embodiment of the present invention.
As described in Figure 1, the control equipment of the super capacitor in the micro-capacitance sensor of an exemplary embodiment of the present invention includes detection unit
101, realtime power calculates unit 102, control of discharge unit 103.
The real-time voltage and real-time current of the detection micro-capacitance sensor bus of detection unit 101.Realtime power calculates unit 102 and is based on
The real-time voltage and the real-time current calculate active power and reactive power.Control of discharge unit 103 is according to described active
Power and Reactive Power Control super capacitor electric discharge, to adjust the voltage of micro-capacitance sensor bus.Control of discharge unit 103 can wrap
Include phase calculation unit, voltage magnitude computing unit and reference voltage value computing unit.
It is super in the micro-capacitance sensor that an exemplary embodiment of the present invention is described in detail hereinafter with reference to Fig. 2 to Figure 10
Each unit that the control equipment of capacitor includes.
Fig. 2 is the flow chart of the control method of the super capacitor in the micro-capacitance sensor of an exemplary embodiment of the present invention.
As shown in Fig. 2, detection unit 101 detects the real-time voltage and real-time current of micro-capacitance sensor bus in step S201.
In step S202, it is active based on the real-time voltage and real-time current calculating that realtime power calculates unit 102
Power and reactive power.
Fig. 3 is that the realtime power of an exemplary embodiment of the present invention calculates the block diagram of unit 102.In step S202,
Realtime power calculates unit 102 and carries out the conversion of Clark reference axis and Park coordinate respectively to real-time voltage value and real-time current value
Axis conversion, real-time voltage value and real-time current value after then being converted according to reference axis calculate the active power on micro-capacitance sensor bus
And reactive power.
In step S203, control of discharge unit 103 is according to the active power and the Reactive Power Control super capacitor
Electric discharge, to adjust the voltage of micro-capacitance sensor bus.
In step S203, sagging control can be used to control super capacitor, to compensate the voltage of micro-capacitance sensor bus.
Fig. 4 is the example graph of the sagging control of voltage of an exemplary embodiment of the present invention.Fig. 5 is according to this
The example graph of the frequency droop control of the exemplary embodiment of invention.
As shown in figure 4, when busbar voltage is higher than standard value (that is, voltage rating) V0When, super capacitor can absorb idle function
Rate, to make voltage drop down to standard value V0.When busbar voltage is lower than standard value V0When, the capable of emitting reactive power of super capacitor, from
And voltage is made to be increased to standard value V0。
If micro-grid system breaks down, voltage decline abruptly to V1, the operating status of system will be by A dot crawl to B
Point will issue more reactive power supporting bus voltages at this time.Sagging control is by issuing reactive power compensation bus electricity
Pressure, and keep the balance of voltage.Detailed description that hereinafter reference will be made to the drawings controls super capacitor by sagging control to compensate bus
The mode of voltage.
Fig. 6 is the block diagram of the phase calculation unit of an exemplary embodiment of the present invention.Fig. 7 is according to the present invention shows
The block diagram of the voltage magnitude computing unit of example property embodiment.
Fig. 6 shows the block diagram that phase calculation unit calculates phase angle.Phase calculation unit can be according to the active power, given
Active power, the rated frequency of micro-capacitance sensor calculate super capacitor output voltage phase angle.Referring to Fig. 6, given active power
It is worth the active power value as corresponding to the state A in Fig. 5.Frequency droop coefficient is the signal of frequency droop shown in fig. 5 control
The slope of linearity curve figure, as Δ f/ Δ P.Next, can be according to the active power, given active power and micro-capacitance sensor
Rated frequency calculates frequency droop coefficient.Then, 2 π × (50- frequency droop coefficient) exports phase angle via integral element.It is described
The phase calculation of sagging control does not have phaselocked loop link, will not be influenced, but make by the frequency signal of bus when calculating phase angle
Pass through integral element outputting standard phase angle with given frequency (such as 50Hz).
Fig. 7 shows the block diagram that voltage magnitude computing unit calculates voltage magnitude.Voltage magnitude computing unit can be according to institute
State the amplitude that reactive power, given reactive power, the voltage rating of micro-capacitance sensor calculate super capacitor output voltage.Reference Fig. 7,
Given reactive power value reactive power value as corresponding to the state A in Fig. 4.The sagging coefficient of voltage is voltage shown in Fig. 4
The slope of the example graph of sagging control, as Δ V/ Δ Q.Next, can be according to the reactive power, previously given
Reactive power and the voltage rating of micro-capacitance sensor calculate the sagging coefficient of voltage.Voltage magnitude is mainly according to voltage rating V0It determines,
That is voltage magnitude fluctuation up and down near voltage rating of the sagging control output of voltage.
Therefore, in step S203, control of discharge unit 103 can according to the phase angle of the super capacitor output voltage of calculating and
Amplitude is discharged to control super capacitor, to adjust the voltage of micro-capacitance sensor bus.
Fig. 8 is the block diagram of the voltage reference value computing unit of an exemplary embodiment of the present invention.Voltage reference value meter
Unit is calculated according to the output phase angle, calculates separately output phase angle, output+2/3 π of phase angle, the cosine value for exporting -2/3 π of phase angle,
And be multiplied respectively with the output voltage amplitude, product is subjected to the conversion of Clarke (Clark) reference axis and Parker (Park) is sat
D axis reference voltage and q axis reference voltage are obtained respectively after parameter conversion.
Fig. 9 is the positive sequence voltage outer ring of an exemplary embodiment of the present invention and the frame of current inner loop Double-loop Control Strategy
Figure.In the control strategy, positive sequence extraction is carried out to the real-time voltage of detection, obtains d axis positive sequence voltage feedback VpdJust with q axis
Sequence voltage feeds back Vpq, and obtained by Double-loop Control Strategy and the conversion of anti-Park reference axis for space vector pulse width modulation
(SVPWM) two cordic phase rotator component of positive sequence.
Figure 10 is the negative sequence voltage outer ring and current inner loop Double-loop Control Strategy of an exemplary embodiment of the present invention
Block diagram.In the control strategy, negative phase-sequence extraction is carried out to the real-time voltage of detection, obtains d axis positive sequence voltage feedback VndWith q axis
Positive sequence voltage feeds back Vnq, and obtained by Double-loop Control Strategy and the conversion of anti-Park reference axis for space vector pulse width modulation
(SVPWM) two cordic phase rotator component of negative phase-sequence.
In other words, referring to Fig. 9 and Figure 10, control of discharge unit can be according to d axis reference voltage and d axis positive sequence voltage and q
Axis reference voltage and q axis positive sequence voltage feedback calculate the positive-sequence component of space vector pulse width modulation, so that the electricity of micro-capacitance sensor bus
The positive-sequence component of pressure is within rated range.Here, d axis positive sequence voltage feedback and q axis positive sequence voltage feedback are by real-time voltage
Carry out positive-sequence component obtained from positive-negative sequence extraction.In addition, control of discharge unit can be fed back according to d axis negative sequence voltage and q axis is negative
Sequence voltage feedback calculates the negative sequence component of space vector pulse width modulation, with the voltage for compensating micro-capacitance sensor bus and eliminates micro- electricity
The negative sequence component of the voltage of net bus.Here, d axis negative sequence voltage feedback and q axis negative sequence voltage feedback are to carry out real-time voltage
Negative sequence component obtained from positive-negative sequence is extracted.
Two cordic phase rotator component of positive sequence and two cordic phase rotator component of negative phase-sequence for SVPWM can be to Voltage unbalances
It compensates, makes the positive-sequence component of system voltage within preset range, and the negative sequence component of bucking-out system voltage.
Selectively, super capacitor over-discharge in order to prevent, is improved the service life of super capacitor, the control of the super capacitor
Whether the quantity of electric charge that method processed can comprise the further steps of: the storage that detection unit 101 detects super capacitor is less than predetermined value；When
When the quantity of electric charge of super capacitor storage is less than the predetermined value, control unit controls super capacitor and stops electric discharge；Work as super capacitor
When the quantity of electric charge of storage is greater than the predetermined value, real-time voltage and reality that detection unit 101 executes detection micro-capacitance sensor bus are returned
When electric current the step of.
As described above, during micro-capacitance sensor operation, the voltage and current of real-time monitoring bus, while according to fig. 2 extremely
Control method described in Figure 10 controls super capacitor electric discharge, compensates to the voltage of bus.
Technical effect of the invention is described below with reference to Figure 11 to Figure 13.
Figure 11 is the block diagram of the micro-capacitance sensor of an exemplary embodiment of the present invention.An exemplary embodiment of the present invention
Micro-capacitance sensor may include super capacitor 10, super capacitor current transformer 11, super capacitor transformer 12, super capacitor switch 13, liquid
Galvanic battery 20, flow battery current transformer 21, flow battery transformer 22, flow battery switch 23, important load 30, photovoltaic plant
40, photovoltaic plant current transformer 41, photovoltaic plant transformer 42, photovoltaic plant switch 43, sensitive loads 50, sensitive loads switch
51。
Micro-capacitance sensor shown in Figure 11 selects the flow battery of 200KW/4h, the super capacitor of 200KW/10s, the light of 150KW
Overhead utility.The important load of 75KW, the sensitive loads of 12KW are selected in load.
Control method according to an exemplary embodiment of the present invention and existing is respectively adopted to the super capacitor in Figure 11
Control method controls, and acquires the voltage and current of the bus when the sensitive loads 51 of the 12KW in Figure 11 start suddenly respectively.
Current temporary state curve graph and voltage transient curve in 51 cut process of sensitive loads is shown respectively in Figure 12 and Figure 13
Figure.In Figure 12, block curve indicates to control super capacitor using control method according to an exemplary embodiment of the present invention
Current temporary state curve graph, dashed curve indicate the current temporary state curve graph that super capacitor is controlled using existing control method,
It can be recognized from fig. 12 that super capacitor is controlled using control method according to an exemplary embodiment of the present invention, by two weeks
Wave bus current can restore normally, and the control method used controls super capacitor, need by six cycle buses electricity
Stream can just restore normal.In Figure 13, block curve expression is controlled using control method according to an exemplary embodiment of the present invention
The voltage transient curve graph of super capacitor processed, dashed curve indicate the voltage that super capacitor is controlled using existing control method
Transient state curve graph controls super capacitor using control method according to an exemplary embodiment of the present invention as can be seen from Figure 13,
It can restore normally by a cycle busbar voltage, and the control method used controls super capacitor, needs by nine
Cycle busbar voltage can just restore normal.
It can be seen that from Figure 12 and Figure 13 in load sudden change, using controlling party according to an exemplary embodiment of the present invention
Method controls super capacitor, than using existing control method, can more give full play to super capacitor quick start advantage, can make mother
Line voltage more quickly restores normally, can preferably improve power quality.
In addition, the control method of the super capacitor in the micro-capacitance sensor of an exemplary embodiment of the present invention is super to control
Capacitor, super capacitor controller have the function of plug and play, it is only necessary to be changed according to the variation of voltage on bus and frequency super
The power output of grade capacitor itself, to stablize the voltage and frequency of bus.
In addition, the control method of the super capacitor in the micro-capacitance sensor of an exemplary embodiment of the present invention is super to control
Capacitor eliminates communication time, does not acquire remaining master because super capacitor is no and remaining distributed generation resource is communicated
The power output of power supply, the acquisition for eliminating a nearly cycle calculate the time, can be than current super capacitor control mode speed
Faster.
In addition, the control method of the super capacitor in the micro-capacitance sensor of an exemplary embodiment of the present invention is super to control
Capacitor can allow super capacitor to enter linear operating region by the way that reasonable sagging coefficient is arranged.
Although these embodiments are not intended to describe all possible shapes of the invention the foregoing describe exemplary embodiment
Formula.More precisely, word used in specification is descriptive words word and not restrictive, and should be understood that can
Various changes are made without departing from the spirit and scope of the present invention.In addition, can be by the spy of the embodiment of various realizations
Sign is combined to form further embodiment of the invention.
Claims (10)
1. a kind of control method of the super capacitor in micro-capacitance sensor, which is characterized in that the control method of the super capacitor includes:
The real-time voltage and real-time current of detection unit detection micro-capacitance sensor bus；
Realtime power calculates unit and is based on the real-time voltage and real-time current calculating active power and reactive power；
Control of discharge unit discharges according to the active power and the Reactive Power Control super capacitor, to adjust micro-capacitance sensor mother
The voltage of line,
Wherein, controlling the step of super capacitor discharges includes:
Phase calculation unit calculates super capacitor according to the active power, given active power, the rated frequency of micro-capacitance sensor
The phase angle of output voltage；
Voltage magnitude computing unit calculates super according to the reactive power, given reactive power, the voltage rating of micro-capacitance sensor
The amplitude of capacitor output voltage；
Control of discharge unit controls super capacitor electric discharge according to the phase angle of the super capacitor output voltage of calculating and amplitude, to adjust
The voltage of micro-capacitance sensor bus is saved,
Wherein, super capacitor electric discharge is controlled, according to the phase angle of the super capacitor output voltage of calculating and amplitude to adjust micro- electricity
The step of voltage of net bus includes:
Phase angle and amplitude of the voltage reference value computing unit based on super capacitor output voltage calculate d axis reference voltage and q axis ginseng
Examine voltage；
Control of discharge unit is according to the d axis reference voltage and d axis positive sequence voltage feedback and the q axis reference voltage and q axis
Positive sequence voltage feedback calculates the positive-sequence component of space vector pulse width modulation, so that the positive-sequence component of the voltage of micro-capacitance sensor bus is in volume
Within the scope of fixed, the d axis positive sequence voltage feedback and q axis positive sequence voltage feedback are that the real-time voltage is carried out positive-negative sequence
Positive-sequence component obtained from extraction；
Control of discharge unit calculates the negative of space vector pulse width modulation according to d axis negative sequence voltage feedback and q axis negative sequence voltage feedback
Order components, with the voltage for compensating micro-capacitance sensor bus and eliminate micro-capacitance sensor bus voltage negative sequence component, the d axis negative phase-sequence
Voltage Feedback and q axis negative sequence voltage feedback are that the real-time voltage is carried out negative sequence component obtained from positive-negative sequence extraction.
2. the control method of super capacitor according to claim 1, which is characterized in that calculate super capacitor output voltage
The step of phase angle includes: phase calculation unit according to the active power, the rated frequency of given active power and micro-capacitance sensor
Frequency droop coefficient is calculated, and super capacitor output electricity is calculated according to the rated frequency of the frequency droop coefficient of calculating and micro-capacitance sensor
The phase angle of pressure.
3. the control method of super capacitor according to claim 1, which is characterized in that calculate super capacitor output voltage
The step of amplitude includes: voltage magnitude computing unit according to the specified of the reactive power, given reactive power and micro-capacitance sensor
Voltage calculates the sagging coefficient of voltage, and defeated according to the voltage rating of the sagging coefficient of the voltage of calculating and micro-capacitance sensor calculating super capacitor
The amplitude of voltage out.
4. the control method of super capacitor according to claim 1, which is characterized in that calculate active power and reactive power
The step of include: realtime power calculate unit by the real-time voltage and the real-time current carry out the conversion of Clarke reference axis and
The conversion of Parker's reference axis, and according to the real-time voltage and real-time current meter after the conversion of Clarke reference axis and the conversion of Parker's reference axis
Calculate the active power and the reactive power.
5. the control method of super capacitor according to claim 1, which is characterized in that the control method of the super capacitor
Further include:
Whether the quantity of electric charge of the storage of detection unit detection super capacitor is less than predetermined value；
When the quantity of electric charge of super capacitor storage is less than the predetermined value, control unit controls super capacitor and stops electric discharge；
When the quantity of electric charge of super capacitor storage is greater than the predetermined value, the reality that detection unit executes detection micro-capacitance sensor bus is returned
When voltage and the step of real-time current.
6. a kind of control equipment of the super capacitor in micro-capacitance sensor, which is characterized in that the control equipment of the super capacitor includes:
Detection unit detects the real-time voltage and real-time current of micro-capacitance sensor bus；
Realtime power calculates unit, calculates active power and reactive power based on the real-time voltage and the real-time current；
Control of discharge unit discharges according to the active power and the Reactive Power Control super capacitor, to adjust micro-capacitance sensor
The voltage of bus,
Wherein, control of discharge unit includes:
Phase calculation unit calculates super capacitor according to the active power, given active power, the rated frequency of micro-capacitance sensor
The phase angle of output voltage；
Voltage magnitude computing unit calculates super according to the reactive power, given reactive power, the voltage rating of micro-capacitance sensor
The amplitude of capacitor output voltage；
Wherein, control of discharge unit is put according to the phase angle of the super capacitor output voltage of calculating and amplitude to control super capacitor
Electricity, to adjust the voltage of micro-capacitance sensor bus,
Wherein, control of discharge unit further include:
Voltage reference value computing unit, phase angle and amplitude based on super capacitor output voltage calculate d axis reference voltage and q axis ginseng
Examine voltage；
Wherein, control of discharge unit is according to the d axis reference voltage and d axis positive sequence voltage feedback and the q axis reference voltage
The positive-sequence component for calculating space vector pulse width modulation is fed back with q axis positive sequence voltage, so that the positive sequence of the voltage of micro-capacitance sensor bus point
For amount within rated range, the d axis positive sequence voltage feedback and q axis positive sequence voltage feedback are to carry out the real-time voltage
Positive-sequence component obtained from positive-negative sequence is extracted；
Control of discharge unit calculates the negative of space vector pulse width modulation according to d axis negative sequence voltage feedback and q axis negative sequence voltage feedback
Order components, with the voltage for compensating micro-capacitance sensor bus and eliminate micro-capacitance sensor bus voltage negative sequence component, the d axis negative phase-sequence
Voltage Feedback and q axis negative sequence voltage feedback are that the real-time voltage is carried out negative sequence component obtained from positive-negative sequence extraction.
7. the control equipment of super capacitor according to claim 6, which is characterized in that phase calculation unit has according to
The rated frequency of function power, given active power and micro-capacitance sensor calculates frequency droop coefficient, and according to the frequency droop of calculating
The phase angle of the rated frequency of coefficient and micro-capacitance sensor calculating super capacitor output voltage.
8. the control equipment of super capacitor according to claim 6, which is characterized in that voltage magnitude computing unit is according to institute
The voltage rating for stating reactive power, given reactive power and micro-capacitance sensor calculates the sagging coefficient of voltage, and according to the voltage of calculating
The amplitude of the voltage rating of sagging coefficient and micro-capacitance sensor calculating super capacitor output voltage.
9. the control equipment of super capacitor according to claim 6, which is characterized in that realtime power calculates unit will be described
Real-time voltage and the real-time current carry out the conversion of Clarke reference axis and the conversion of Parker's reference axis, and according to Clarke reference axis
Real-time voltage and real-time current after conversion and the conversion of Parker's reference axis calculate the active power and the reactive power.
10. the control equipment of super capacitor according to claim 6, which is characterized in that detection unit also detects super electricity
Whether the quantity of electric charge of the storage of appearance is less than predetermined value；When the quantity of electric charge of super capacitor storage is less than the predetermined value, control is single
Member control super capacitor stops electric discharge；When the quantity of electric charge of super capacitor storage is greater than the predetermined value, detection unit continues to examine
The real-time voltage and real-time current of micrometer power grid bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611234479.0A CN106549407B (en) | 2016-12-28 | 2016-12-28 | The control method and equipment of super capacitor in micro-capacitance sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611234479.0A CN106549407B (en) | 2016-12-28 | 2016-12-28 | The control method and equipment of super capacitor in micro-capacitance sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106549407A CN106549407A (en) | 2017-03-29 |
| CN106549407B true CN106549407B (en) | 2019-10-11 |
Family
ID=58397813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611234479.0A Active CN106549407B (en) | 2016-12-28 | 2016-12-28 | The control method and equipment of super capacitor in micro-capacitance sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106549407B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109995295A (en) * | 2019-03-25 | 2019-07-09 | 中国科学院长春光学精密机械与物理研究所 | More motor parallel drive control methods and system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103606954A (en) * | 2013-11-27 | 2014-02-26 | 上海电力学院 | Novel grid-connected photovoltaic power generation control method |
| CN105790293A (en) * | 2016-03-04 | 2016-07-20 | 国网青海省电力公司 | Microgrid energy storage apparatus and control method in combination with storage battery and supercapacitor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104659804B (en) * | 2013-11-20 | 2017-03-08 | 沈阳工业大学 | Micro-capacitance sensor containing hybrid energy-storing and its control method |
| CN103683324B (en) * | 2013-12-04 | 2016-08-24 | 浙江大学 | A kind of micro power network system is used for the droop control method of the improvement based on communication network of distributed power source parallel running mode |
| CN103956778A (en) * | 2014-04-16 | 2014-07-30 | 中国科学院广州能源研究所 | Micro-grid system and networking method based on phase angle droop control |
| EP3664246A1 (en) * | 2015-06-12 | 2020-06-10 | Enphase Energy, Inc. | Method and apparatus for control of intelligent loads in microgrids |
| KR101689017B1 (en) * | 2015-08-18 | 2016-12-23 | 인천대학교 산학협력단 | System and method for fuzzy droop control of multi-bess in microgrid |
-
2016
- 2016-12-28 CN CN201611234479.0A patent/CN106549407B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103606954A (en) * | 2013-11-27 | 2014-02-26 | 上海电力学院 | Novel grid-connected photovoltaic power generation control method |
| CN105790293A (en) * | 2016-03-04 | 2016-07-20 | 国网青海省电力公司 | Microgrid energy storage apparatus and control method in combination with storage battery and supercapacitor |
Non-Patent Citations (1)
| Title |
|---|
| 超级电容储能系统在微电网中的应用;殷桂梁等;《中国高等学校电力系统及其自动化专业第二十七届学术年会》;20121116;第1-4页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106549407A (en) | 2017-03-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102856924B (en) | Microgrid smooth switch control method based on composite energy storage | |
| CN105493372B (en) | Solar power system | |
| CN104410105B (en) | Based on dc bus cancellated Intelligent wind power field control method | |
| Jia et al. | Design of hybrid energy storage control system for wind farms based on flow battery and electric double-layer capacitor | |
| CN105205232A (en) | RTDS (real time digital simulator) based stability simulation testing platform for micro grid system | |
| CN104810858A (en) | Control method for grid-connected power generation system of optical storage microgrid | |
| CN105071405A (en) | Microgrid system with asymmetric non-linear load and power balancing control method | |
| CN102355008B (en) | Control method for stabilizing power fluctuation of wind power field | |
| Zhao-Xia et al. | Impacts of Pf & QV droop control on microgrids transient stability | |
| CN104993478A (en) | Offline operation control method suitable for user-side microgrid | |
| Xu et al. | Study on black start strategy of microgrid with PV and multiple energy storage systems | |
| CN104979849A (en) | Grid-connected operation control method for user side microgrid | |
| CN103904654A (en) | Combined three-phase inverter circuit parallel operation control method | |
| CN110061488A (en) | Consider the hybrid energy-storing frequency division control method of direct-current micro-grid change of unbalance current rate | |
| CN106130026A (en) | A kind of double-deck micro-capacitance sensor group's voltage control method | |
| CN206790103U (en) | A kind of voltage dip/temporarily rise controlling device | |
| CN110611332B (en) | Energy storage device of offshore wind power system and control method thereof | |
| Gundumalla et al. | Ramp rate control strategy for an islanded dc microgrid with hybrid energy storage system | |
| CN105552966A (en) | Energy-storage direct-drive permanent magnet wind power generation system | |
| CN110208700A (en) | The calculation method of energy-storage system virtual battery open-circuit voltage in a kind of direct-current micro-grid | |
| CN106549407B (en) | The control method and equipment of super capacitor in micro-capacitance sensor | |
| CN109866643A (en) | Direct-current micro-grid control method is filled in a kind of storage of light | |
| CN104268798B (en) | The appraisal procedure that a kind of distributed power source and electric automobile influence on power distribution network | |
| Rajabinezhad et al. | A Three-Level Control Strategy for Battery Energy Storage System to Mitigate Power fluctuations and Compensate Reactive Power of Distributed Generators in a Microgrid | |
| CN110350530A (en) | A kind of active stabilization device and method of direct-current grid high order ripple |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |