CN110474354A - Micro-capacitance sensor isolated operation mode control method for coordinating containing lithium battery and super capacitor - Google Patents
Micro-capacitance sensor isolated operation mode control method for coordinating containing lithium battery and super capacitor Download PDFInfo
- Publication number
- CN110474354A CN110474354A CN201910742214.9A CN201910742214A CN110474354A CN 110474354 A CN110474354 A CN 110474354A CN 201910742214 A CN201910742214 A CN 201910742214A CN 110474354 A CN110474354 A CN 110474354A
- Authority
- CN
- China
- Prior art keywords
- power
- lithium battery
- dsc
- soc
- super capacitor
- 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.)
- Granted
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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses the micro-capacitance sensor isolated operation mode control method for coordinating containing lithium battery and super capacitor, micro-capacitance sensor includes photovoltaic generating system, load, micro electric network coordination controller, the joint energy-storage system being made of lithium battery energy storage battery unit and super capacitor storage unit and photovoltaic generating system and combines the respective local controller of energy-storage system.Micro electric network coordination controller determines that coordinated control instructs, and is issued photovoltaic power generation local controller and joint energy-storage system local controller progress power tracking control, realizes photovoltaic generating system and combines the coordinated control of energy-storage system.The present invention has the advantages that high power density, fast response time, charge and discharge number are almost unrestricted using supercapacitor, balances high frequency, the fluctuation within a narrow range of power, while providing the voltage and frequency reference of micro-grid system；Have energy density big using lithium battery, the limited feature of charge and discharge number can be with active balance low frequency power.
Description
Technical field
The present invention relates to the micro-capacitance sensor isolated operation mode control method for coordinating containing lithium battery and super capacitor, belong to new energy
Source technical field of power generation.
Background technique
The top priority of its coordination control strategy of the micro-capacitance sensor of isolated operation is to guarantee the stabilization of micro-capacitance sensor and important negative
The power supply quality and reliability of lotus avoid influence of the new energy power swing to micro-capacitance sensor；It is lonely using the micro-capacitance sensor of single energy storage
When island is run, be easy by generation of electricity by new energy with load relation between supply and demand is unbalanced influences, cause to overcharge, over-discharge phenomenon, and single
The limitation of energy-storage system is not able to satisfy multifarious electrical energy demands.After hybrid energy-storing, especially for containing lithium battery and
The micro-capacitance sensor of super capacitor needs to give full play to the advantage of different energy storage, can greatly play the advantage of different energy storage in this way,
Super-charge super-discharge is avoided, the stabilization of system and the service life of energy storage are greatly enhanced；Again, guarantee safety and energy-storage travelling wave tube not by
Under the premise of damage, the isolated operation time of guarantee micro-capacitance sensor as far as possible extends, with to power system restoration, there are the sufficient times.
Therefore how preferably by means of the characteristic of different energy storage, by the function under different time scales under isolated operation mode
It is problem to be solved that a variety of demands such as rate variation, load fluctuation and the foundation of micro-capacitance sensor voltage frequency, which carry out reasonable distributions,.
Summary of the invention
Present invention seek to address that coordinating to control containing the micro-capacitance sensor isolated operation mode of lithium battery and super capacitor in the prior art
The problem of method processed does not give full play of the advantage of lithium battery and super capacitor, and the stability of micro-capacitance sensor is relatively difficult to guarantee proposes
Micro-capacitance sensor isolated operation mode control method for coordinating containing lithium battery and super capacitor.
Since supercapacitor has the advantages that high power density, fast response time, charge and discharge number are almost unrestricted,
Decomposition control is carried out to joint energy-storage system compensation power, using the high frequency of supercapacitor balance power, fluctuation within a narrow range, together
When provide micro-grid system voltage and frequency reference.Lithium battery has energy density big, the limited feature of charge and discharge number, main
It is used to balance the low frequency power in micro-capacitance sensor.
To realize the above-mentioned technical purpose, the invention adopts the following technical scheme:
On the one hand, the present invention provides the micro-capacitance sensor isolated operation mode coordinated control sides containing lithium battery and super capacitor
Method, the micro-capacitance sensor is by photovoltaic generating system, joint energy-storage system, load (including important load and common load), micro-capacitance sensor
The compositions such as tuning controller, photovoltaic power generation local controller, joint energy-storage system local controller, multiple switch.Joint energy storage
System is made of lithium battery energy storage battery unit and super capacitor storage unit.The lithium battery energy storage battery unit is by lithium battery, two-way DC/
DC converter 1 and two-way DC/AC converter 1 composition；The lithium battery is connected with two-way DC/DC converter 1, and two-way DC/DC becomes
Parallel operation 1 is connect with two-way DC/AC converter 1, is connected in series on public exchange bus by switch K1；The super capacitor energy-storage list
Member is made of super capacitor, two-way DC/DC converter 2 and two-way DC/AC converter 2；The super capacitor and two-way DC/DC become
Parallel operation 2 is connected, and two-way DC/DC converter 2 is connect with two-way DC/AC converter 2, is connected in series to public exchange bus by switch K2
On；The photovoltaic generating system is connect with photovoltaic combining inverter, is connected in series on public exchange bus by switch K3；It is important negative
Lotus is connected in series on public exchange bus by switch K4, and common load is connected in series on public exchange bus by switch K5.
SOCbState-of-charge, U are used for the depth of discharge and electricity of lithium batterydscFor the depth of discharge of super capacitor
It is characterized with end voltage, difference active power Δ P is that micro-capacitance sensor loads real output signal PloadWith photovoltaic generating system
Output power PVDifference, i.e. (Δ P=Pload-PV), SOCbFor lithium battery charge state, SOCb_maxFor the charged maximum of lithium battery
Value, SOCb_minFor lithium battery charge state minimum value, Pb_refFor lithium battery active power reference value, Pb_discFor putting for lithium battery
Electrical power, Pb_cFor the charge power of lithium battery, Udsc_maxFor the depth of discharge end voltage max of super capacitor,
Udsc_minFor the depth of discharge end voltage minimum of super capacitor, PscFor the power of supercapacitor in energy storage control system
Offset, Psc_highNeed to compensate power component reference value, P for super capacitor high frequencysc_discFor the electric discharge function of supercapacitor
Rate, Psc_cFor the charge power of supercapacitor, Psc_refFor super capacitor active power reference value.
The photovoltaic generating system is controlled by photovoltaic power generation local controller, and the joint energy-storage system is controlled by joint storage
It can system local controller；The micro electric network coordination controller loads real output signal P according to micro-capacitance sensorload, load
Reactive power Qload, photovoltaic generating system output power PV, lithium battery state-of-charge SOCbAnd the charge and discharge of super capacitor
Depth UdscIt determines photovoltaic generating system and combines the coordinated control instruction of energy-storage system, and control instruction is issued into photovoltaic respectively
Generate electricity local controller and joint energy-storage system local controller；
Control instruction controls based on the received respectively for photovoltaic power generation local controller and joint energy-storage system local controller
The current transformer of respective system carries out power tracking control, realizes photovoltaic generating system and combines the coordinated control of energy-storage system.
Further, micro electric network coordination controller determines photovoltaic generating system and combines the coordinated control instruction of energy-storage system
Method is as follows:
1) determine that micro-capacitance sensor loads real output signal PloadWith the output power P of photovoltaic generating systemVDifference have
Function power difference Δ P；Joint energy-storage system is to absorb or issue power come degree of sentencing according to difference active power Δ P, to guarantee
The power-balance of micro-grid system.
2) to difference active power difference Δ P and load reactive power QloadIt is decomposed, obtains lithium battery and super electricity
The compensation power component of appearance, distributes to supercapacitor for high frequency power, and low frequency power is distributed to lithium battery, to give full play to
Their advantage realizes accurately power tracking.
3) judge the state-of-charge SOC of lithium batterybAnd the depth of discharge U of super capacitordsc, come in conjunction with the symbol of Δ P
Control the operating status of lithium battery and super capacitor.
On the basis of above technical scheme, further, the method for step 2) includes:
Step 1: difference DELTA P is decomposed using low-pass filter, obtains the reference value of lithium battery low-frequency compensation power component
Pb_low, then with difference DELTA P subtract Pb_lowIt obtains super capacitor high frequency and needs to compensate power component reference value Psc_high, such as following formula institute
Show；
Step 2: since photovoltaic generating system does not generate reactive power, the reactive power that load needs is all by joining
Energy-storage system is closed to provide.Reactive power Q will be loaded using low-pass filterloadIt decomposes, obtains the idle function of lithium battery low-frequency compensation
The reference value Q of rate componentb_low, then with load reactive power QloadSubtract lithium battery low-frequency compensation reactive power component reference value
Qb_lowIt obtains super capacitor high frequency and needs compensating power component reference value Qsc_high, it is shown below；
Wherein s integral function, T time step-length are mended shown herein as the integral function and time of 1 rank low-pass filter of filtering
It repays.
Further, it is determined that the method for low-pass filter parameter are as follows: with lithium battery using maximum service life (MSL) N and
Maximum allowable charge and discharge number MmaxSecondary, then the charge and discharge number that daily lithium battery allows isIf photovoltaic is sent out
When the electric system working time is at when T1 to T2, then the frequency of photovoltaic power fluctuation is balanced with lithium battery
The power compensation frequency critical value of lithium battery and super capacitor is set with this.Here determining frequency f is finally exactly described in determination
Time step T's, maximum service life (MSL) and most that time step T=1/f, in this way design low-pass filter parameter guarantee lithium battery
Good charging times.
Further, step 3) includes the SOC for judging lithium batterybAnd the U of super capacitordsc, come in conjunction with the symbol of Δ P
The operating status for controlling lithium battery and super capacitor avoids energy storage depth charge status from occurring, possesses biggish charging nargin,
Energy storage loss is reduced, is prolonged its service life.
(1) as Δ P < 0, photovoltaic generation power is greater than load power at this time, and energy storage device is needed to absorb extra power,
The state-of-charge of energy storage device is judged:
1-1) work as SOCb<SOCb_maxAnd Udsc<Udsc_maxWhen, even Psc=Psc_high, Pb_ref=Pb_low。
1-2) work as SOCb<SOCb_maxAnd Udsc≥Udsc_maxWhen, super capacitor state is more than upper limit value at this time, is arranged super
Capacitor is lithium battery charging, this season Psc=Psc_high-Psc_disc, Pb_ref=Pb_low+Psc_disc。
1-3) work as SOCb≥SOCb_maxAnd Udsc<Udsc_maxWhen, lithium battery state is more than upper limit value at this time, and lithium battery is arranged
For super capacitor charging, this season Psc=Psc_high+Pb_disc, Pb_ref=Pb_low-Pb_disc。
1-4) work as SOCb≥SOCb_maxAnd Udsc≥Udsc_maxWhen, photovoltaic generating system is switched to by MPPT mode at this time
Agc mode limits its generated energy, so that Δ P > 0, load power is preferentially provided by lithium battery and super capacitor, switchs to step 2-
5)。
1-5) work as SOCb≤SOCb_minAnd Udsc≤Udsc_minWhen, Psc=Psc_high+Psc_c, Pb_ref=Pb_low+Pb_c。
(2) as Δ P > 0, load power is greater than photovoltaic power at this time, needs energy storage device discharging compensation active power poor
Volume judges the state-of-charge of energy storage device:
2-1) work as SOCb>SOCb_minAnd Udsc>Udsc_minWhen, even Psc=Psc_high；Pb_ref=Pb_low。
2-2) work as SOCb>SOCb_minAnd Udsc≤Udsc_minWhen, super capacitor state is in lower limit value, setting lithium electricity at this time
Pond is super capacitor charging, this season Psc=Psc_high+Psc_c, Pb_ref=Pb_low-Psc_c。
2-3) work as SOCb≤SOCb_minAnd Udsc>Udsc_minWhen, lithium battery is in lower limit value at this time, and setting super capacitor is
Lithium battery charging, this season Psc=Psc_high-Pb_c, Pb_ref=Pb_low+Pb_c。
2-4) work as SOCb≤SOCb_minAnd Udsc≤Udsc_minWhen, it needs to cut off common load step by step at this time, so that Δ P < 0,
It preferentially gives joint energy-storage system to charge by photovoltaic generating system, so that energy-storage system carrying capacity is unlikely to too low and damages, turns
For step 1-5).
2-5) work as SOCb≥SOCb_maxAnd Udsc≥Udsc_maxWhen, Psc=Psc_high-Psc_disc, Pb_ref=Pb_low-Pb_disc。
(3) as Δ P=0, photovoltaic power is equal to load power at this time, and energy-storage system is exchanged with micro-capacitance sensor inactivity, but
It is that can carry out Power Exchange between energy storage device at this time:
3-1) work as Udsc>Udsc_maxAnd SOCb<SOCb_maxWhen or Udsc>Udsc_minAnd SOCb<SOCb_min, it is arranged super
Capacitor charges to lithium battery, even Psc=-Psc_disc, Pb_ref=Psc_disc；
3-2) work as Udsc<Udsc_maxAnd SOCb>SOCb_maxWhen or Udsc<Udsc_minAnd SOCb>SOCb_minWhen, lithium is set
Battery charges to supercapacitor, even Psc=Pb_disc, Pb_ref=-Pb_disc
3-3) work as Udsc≥Udsc_maxAnd SOCb≥SOCb_maxWhen, photovoltaic generating system is switched to by MPPT mode at this time
Agc mode limits its generated energy, so that Δ P > 0, load power is preferentially provided by lithium battery and super capacitor, switchs to step 2-
5)。
3-4) work as Udsc≤Udsc_minAnd SOCb≤SOCb_minWhen, it needs to cut off common load step by step at this time, so that Δ P < 0,
It preferentially gives joint energy-storage system to charge by photovoltaic generating system, so that energy-storage system carrying capacity is unlikely to too low and damages, turns
For step 1-5).
If 3-5) state-of-charge of energy storage device is unsatisfactory for above-mentioned 3-1), 3-2), 3-3), 3-4), condition, energy storage device
It does not charge and does not discharge yet.
Further, photovoltaic power generation local controller issues working condition, operation and MPPT according to micro electric network coordination controller
State or AGC state, photovoltaic DC-to-AC converter realize different capacity tracing control according to different conditions.
Further, joint energy storage local controller includes the control to two-way DC/DC converter 1 and 2, and two-way DC/AC becomes
Control two parts of parallel operation 1 and 2.Control main target for DC/DC is to guarantee DC-side Voltage Stabilization.DC/AC is converted
The control of device 1 uses power outer ring, current inner loop double loop control, realizes the lithium battery for issuing micro electric network coordination controller
Value and power reference carries out low frequency power tracing control.The control of DC/AC converter 2 is controlled using tracking network voltage frequency,
On the one hand power outer ring, current inner loop three close-loop control provide the voltage support of isolated operation micro-capacitance sensor, on the other hand realizing will be micro-
The super capacitor value and power reference that electric network coordination controller issues carries out high frequency power tracing control.
Further, two-way DC/DC converter 1 and two-way DC/DC converter 2 control with the following method:
By given DC voltage Udc* with actual measurement DC voltage UdcSubtract each other, gained difference passes through PI controller, obtains direct current
Flow reference value Idc*；
By DC current reference value Idc *Subtract each other with actual measurement DC current I, gained difference forms reference after PI controller
Voltage signal, the control signal of S1 and S2 in two-way DC/DC converter 1 is finally obtained after PWM modulation.
Switch control signal is consistent with above-mentioned control mode in two-way DC/DC converter 2.
Still further, the two-way DC/AC converter 1, using step control as follows:
The lithium battery active-power P that will be generated according to the control of Power Decomposition control methodb_lowWith the idle function of lithium battery low frequency
Rate Qb_lowLithium battery active power reference value P as two-way DC/AC converter 1b_refWith lithium battery reactive power reference qref
Qb_ref, by lithium battery active power reference value Pb_refWith lithium battery reactive power reference qref Qb_refIt is decoupled, is obtained in electric current
The reference value I of ring 1drefAnd Iqref, by reference value IdrefAnd IqrefCompared with actually measured inductive current, obtained error
Signal is by transient current ring PI controller as two-way 1 modulated voltage signal U of DC/AC converterabc。
Still further, the two-way DC/AC converter 2, using step control as follows:
Track the control of network voltage and frequency: the voltage U of real-time sampling power gridgrid, pass through three-phase phase-locked loop and amplitude
Generate the output voltage U of two-way DC/AC converterscThe reference value f of (namely support voltage of isolated operation micro-capacitance sensor)nomAnd frequency
Rate Unom, the two is made comparisons, and by obtained difference by PI controller, is generated required for maintaining micro-capacitance sensor voltage and frequency stabilization
Active-power PmAnd reactive power Qm；
Current inner loop 2 controls: the P that control is generatedmThe function of supercapacitor in the energy storage control system generated with control
Rate superposition value PscIt is added the reference value P as total two-way DC/AC converter 2sc_ref, the two-way DC/AC of control generation is converted
The output reactive power Q of device 2mNeed to compensate power component reference value Q with the super capacitor high frequency of control productionsc_highIt is added and makees
For the reactive power reference qref Q of the super capacitor of total two-way DC/AC converter 2sc_ref, by active-power Psc_refWith idle function
Rate Qsc_refIt is decoupled, obtains the reference value of current inner loop 2, compared with actually measured inductive current, obtained error is believed
Number by transient current ring PI controller as two-way 2 modulated voltage signal of DC/AC converter.The present invention beneficial skill achieved
Art effect:
The present invention judges the SOC of lithium batterybAnd the U of super capacitordsc, in conjunction with micro-capacitance sensor load real output letter
Number PloadWith the output power P of photovoltaic generating systemVThe symbol of difference active power Δ P control lithium battery and super capacitor
Operating status, avoid energy storage depth charge status from occurring, possess biggish charging nargin, reduce energy storage loss, extend it
Service life；
The present invention decomposes difference active power Δ P, and high frequency power is distributed to supercapacitor, by low frequency power
Lithium battery is distributed to, to give full play to their advantage, realizes accurately power tracking；
The present invention has high power density, fast response time, charge and discharge number almost unrestricted using supercapacitor
The advantages of, decomposition control is carried out to power, using the high frequency of supercapacitor balance power, fluctuation within a narrow range, while being provided micro-
The voltage and frequency reference of network system；Have energy density big using lithium battery, the limited feature of charge and discharge number is main to control
Power-balance in micro-capacitance sensor processed, while absorbing low frequency power；Finally avoid new energy power swing dry to micro-capacitance sensor bring
It disturbs, realizes the power quality and power supply reliability of important load in micro-capacitance sensor, realize the safe and stable operation of micro-capacitance sensor；
The charge and discharge number and photovoltaic power fluctuation is balanced with lithium battery that the present invention allows according to daily lithium battery
Frequency determines low-pass filter, and micro-capacitance sensor load real output signal P is decomposed according to the low-pass filterloadWith
The difference active power Δ P of the output power of photovoltaic generating system, ensure that maximum service life (MSL) and the optimal charge of lithium battery
Number.
Detailed description of the invention
Fig. 1 is the polynary topological structure signal for closing energy-storage system in typical micro-capacitance sensor and micro-capacitance sensor of the present invention
Figure；
Fig. 2 is DC/DC converter topology structure chart in the embodiment of the present invention；
Fig. 3 is the control block diagram of DC/DC converter in the embodiment of the present invention；
Fig. 4 is Power Decomposition control principle block diagram in the embodiment of the present invention；
Fig. 5 is 1 topology diagram of DC/AC bidirectional converter in the embodiment of the present invention；
Fig. 6 is two-way 1 control principle drawing of DC/AC converter of the embodiment of the present invention；
Fig. 7 is 2 topology diagram of DC/AC bidirectional converter in the embodiment of the present invention；
Fig. 8 is two-way 2 control principle block diagram of DC/AC converter of the embodiment of the present invention.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
In the present embodiment, micro-capacitance sensor is by photovoltaic generating system, joint energy-storage system, important load, common load, micro-capacitance sensor
The compositions such as tuning controller, photovoltaic power generation local controller, joint energy-storage system local controller, multiple switch.Joint energy storage
System is made of lithium battery energy storage battery unit and super capacitor storage unit.As shown in Figure 1, lithium battery energy storage battery module by lithium battery,
Two-way DC/DC converter 1, two-way DC/AC converter 1 composition；The super capacitor energy-storage module is by super capacitor, two-way DC/
DC converter 2, two-way DC/AC converter 2 composition.Lithium battery becomes by two-way DC/DC converter 1 and two-way DC/AC converter 1
It changes, super capacitor is converted by two-way DC/DC converter 2 and two-way DC/AC converter 2, the joint energy-storage system of the two composition
After being aggregated into an ac bus, finally unify supplying power for outside.The joint energy-storage system reduces difference using DC/DC converter
The influence that voltage class inputs DC/AC converter DC voltage reduces energy storage during discharge due to holding voltage change
Caused current ripples, while the charge and discharge mode of easily controllable energy-storage units.Feature: two-way DC/DC converter is mainly realized
The energy in bidirectional flow of energy storage device, and maintain the constant of DC voltage；Two-way DC/AC converter is mainly used for realizing isolated island
The power-balance in " source-lotus " and micro-capacitance sensor voltage, the stabilization of frequency under mode.
The following contents in order to facilitate understanding provides the parameter definition being related to here:
SOCbState-of-charge, U are used for the depth of discharge and electricity of lithium batterydscFor the depth of discharge of super capacitor
It is characterized with end voltage, difference active power Δ P is that micro-capacitance sensor loads real output signal PloadWith photovoltaic generating system
Output power PVDifference, i.e. (Δ P=Pload-PV), SOCb_maxFor the charged maximum value of lithium battery, SOCb_minIt is charged for lithium battery
State minimum value, Pb_refFor lithium battery active power reference value, Pb_discFor the discharge power of lithium battery, Pb_cFor filling for lithium battery
Electrical power, Udsc_maxFor the depth of discharge end voltage max of super capacitor, Udsc_minIt is deep for the charge and discharge of super capacitor
Degree end voltage minimum, PscFor the power compensating value of supercapacitor in energy storage control system, Psc_highFor super capacitor height
Frequency needs to compensate power component reference value, Psc_discFor the discharge power of supercapacitor, Psc_cFor the charging function of supercapacitor
Rate, Psc_refFor super capacitor active power reference value.
Micro electric network coordination controller controlled for realizing the coordinated control of photovoltaic generating system, joint energy-storage system
Journey is as follows:
1) photovoltaic generating system preferentially runs on maximum power power generation (MPPT) state, to guarantee that the maximum of illumination utilizes
Rate, to adjust photovoltaic generation power；Joint energy-storage system is to absorb or issue function come degree of sentencing according to difference active power Δ P
Rate, to guarantee the power-balance of micro-grid system.
2) to difference active power Δ P and load reactive power QloadIt is decomposed, obtains lithium battery and super capacitor
Power component is compensated, high frequency power is distributed into supercapacitor, low frequency power is distributed into lithium battery, to give full play to them
Advantage, realize accurately power tracking.
3) as shown in figure 4, the method for decomposing control includes:
Step 1: low-pass filter parameter is determined.Preferably, in order to guarantee the maximum service life (MSL) of lithium battery and most preferably fill
Electric number uses maximum service life (MSL) N and maximum allowable charge and discharge number M with lithium batterymaxIt is secondary, then daily lithium battery
The charge and discharge number of permission isIf the photovoltaic generating system working time is at when 8 to 18, then lithium battery is used
To balance the frequency of photovoltaic power fluctuationThe power compensation frequency of lithium battery and super capacitor is set with this
Critical value.
Step 2: difference DELTA P is decomposed using low-pass filter, obtains the reference value of lithium battery low-frequency compensation power component
Pb_low, then with difference DELTA P subtract Pb_lowIt obtains super capacitor high frequency and needs to compensate power component reference value Psc_high, such as following formula institute
Show；
Step 3: since photovoltaic generating system does not generate reactive power, the reactive power that load needs is all by joining
Energy-storage system is closed to provide.Reactive power Q will be loaded using low-pass filterloadIt decomposes, obtains the idle function of lithium battery low-frequency compensation
The reference value Q of rate componentb_low, then with load reactive power QloadSubtract lithium battery low-frequency compensation reactive power component reference value
Qb_lowIt obtains super capacitor high frequency and needs compensating power component reference value Qsc_high, it is shown below；
4) judge the SOC of lithium batterybAnd the U of super capacitordsc, lithium battery and super electricity are controlled in conjunction with the symbol of Δ P
The operating status of appearance avoids energy storage depth charge status from occurring, and possesses biggish charging nargin, reduces energy storage loss, extends
Its service life.
(1) as Δ P < 0, photovoltaic generation power is greater than load power at this time, and energy storage device is needed to absorb extra power,
The state-of-charge of energy storage device is judged:
1-1) work as SOCb<SOCb_maxAnd Udsc<Udsc_maxWhen, even Psc=Psc_high, Pb_ref=Pb_low。
1-2) work as SOCb<SOCb_maxAnd Udsc≥Udsc_maxWhen, super capacitor state is more than upper limit value at this time, is arranged super
Capacitor is lithium battery charging, this season Psc=Psc_high-Psc_disc, Pb_ref=Pb_low+Psc_disc。
1-3) work as SOCb≥SOCb_maxAnd Udsc<Udsc_maxWhen, lithium battery state is more than upper limit value at this time, and lithium battery is arranged
For super capacitor charging, this season Psc=Psc_high+Pb_disc, Pb_ref=Pb_low-Pb_disc。
1-4) work as SOCb≥SOCb_maxAnd Udsc≥Udsc_maxWhen, photovoltaic generating system is switched to by MPPT mode at this time
Agc mode limits its generated energy, so that Δ P > 0, load power is preferentially provided by lithium battery and super capacitor, switchs to step 2-
5)。
1-5) work as SOCb≤SOCb_minAnd Udsc≤Udsc_minWhen, Psc=Psc_high+Psc_c, Pb_ref=Pb_low+Pb_c。
(2) as Δ P > 0, load power is greater than photovoltaic power at this time, needs energy storage device discharging compensation active power poor
Volume judges the state-of-charge of energy storage device:
2-1) work as SOCb>SOCb_minAnd Udsc>Udsc_minWhen, even Psc=Psc_high；Pb_ref=Pb_low。
2-2) work as SOCb>SOCb_minAnd Udsc≤Udsc_minWhen, super capacitor state is in lower limit value, setting lithium electricity at this time
Pond is super capacitor charging, this season Psc=Psc_high+Psc_c, Pb_ref=Pb_low-Psc_c。
2-3) work as SOCb≤SOCb_minAnd Udsc>Udsc_minWhen, lithium battery is in lower limit value at this time, and setting super capacitor is
Lithium battery charging, this season Psc=Psc_high-Pb_c, Pb_ref=Pb_low+Pb_c。
2-4) work as SOCb≤SOCb_minAnd Udsc≤Udsc_minWhen, it needs to cut off common load step by step at this time, so that Δ P < 0,
It preferentially gives joint energy-storage system to charge by photovoltaic generating system, so that energy-storage system carrying capacity is unlikely to too low and damages, turns
For step 1-5).
2-5) work as SOCb≥SOCb_maxAnd Udsc≥Udsc_maxWhen, Psc=Psc_high-Psc_disc, Pb_ref=Pb_low-Pb_disc。
(3) as Δ P=0, photovoltaic power is equal to load power at this time, and energy-storage system is exchanged with micro-capacitance sensor inactivity, but
It is that can carry out Power Exchange between energy storage device at this time:
3-1) work as Udsc>Udsc_maxAnd SOCb<SOCb_maxWhen or Udsc>Udsc_minAnd SOCb<SOCb_min, it is arranged super
Capacitor charges to lithium battery, even Psc=-Psc_disc, Pb_ref=Psc_disc；
3-2) work as Udsc<Udsc_maxAnd SOCb>SOCb_maxWhen or Udsc<Udsc_minAnd SOCb>SOCb_minWhen, lithium is set
Battery charges to supercapacitor, even Psc=Pb_disc, Pb_ref=-Pb_disc
3-3) work as Udsc≥Udsc_maxAnd SOCb≥SOCb_maxWhen, photovoltaic generating system is switched to by MPPT mode at this time
Agc mode limits its generated energy, so that Δ P > 0, load power is preferentially provided by lithium battery and super capacitor, switchs to step 2-
5)。
3-4) work as Udsc≤Udsc_minAnd SOCb≤SOCb_minWhen, it needs to cut off common load step by step at this time, so that Δ P < 0,
It preferentially gives joint energy-storage system to charge by photovoltaic generating system, so that energy-storage system carrying capacity is unlikely to too low and damages, turns
For step 1-5).
If 3-5) state-of-charge of energy storage device is unsatisfactory for above-mentioned 3-1), 3-2), 3-3), 3-4), condition, energy storage device
It does not charge and does not discharge yet.
Photovoltaic power generation local controller issues working condition according to micro electric network coordination controller, operation and MPPT state or
Person's AGC state, photovoltaic DC-to-AC converter realize different capacity tracing control according to different conditions.
Joint energy storage local controller includes the control to two-way DC/DC converter 1 and 2, two-way DC/AC converter 1 and 2
Control two parts.It is to guarantee DC-side Voltage Stabilization to the control main target with DC/DC.Control to DC/AC converter 1
Using power outer ring, current inner loop double loop control, the lithium battery power reference for issuing micro electric network coordination controller is realized
Value carries out low frequency power tracing control.To the control of DC/AC converter 1 using tracking network voltage frequency control, power outer ring,
Current inner loop three close-loop control, on the one hand provides the voltage support of isolated operation micro-capacitance sensor, on the other hand realizes micro electric network coordination
The super capacitor value and power reference that controller issues carries out high frequency power tracing control.
When micro-capacitance sensor operates in the operating mode of isolated island, two-way DC/DC converter 1 in lithium battery energy storage battery module and super
Two-way DC/DC converter 2 in capacitive energy storage module, runs on two kinds of operating modes: charge mode and discharge mode.Charge mould
Under formula, which uses as Buck circuit, absorbs external energy and charges to energy storage；Under discharge mode, the converter conduct
Boost circuit uses, and energy storage device outwardly releases energy.Its DC/DC converter topology structure is as shown in Figure 2.
It is illustrated in figure 3 the control block diagram of two-way DC/DC converter 1 and 2, using in DC voltage outer ring and DC current
The double -loop control of ring.
By given DC voltage Udc* with actual measurement DC voltage UdcSubtract each other, gained difference passes through PI controller, obtains direct current
Flow reference value Idc*；By DC current reference value Idc *Subtract each other with actual measurement DC current I, gained difference is formed after PI controller
The voltage signal of reference finally obtains the control signal of S1 and S2 in two-way DC/DC converter 1 after PWM modulation.
Switch control signal is consistent with above-mentioned control mode in two-way DC/DC converter 2.
By realizing the electric voltage frequency support of isolated operation micro-capacitance sensor with the control method of up converter and according to micro- electricity
The super capacitor value and power reference that net tuning controller issues carries out high frequency power tracing control.
It is illustrated in figure 5 the topology diagram of two-way DC/AC converter 1:
Power Decomposition is controlled to the reference value P for the lithium battery low-frequency compensation power component that control generatesb_lowIt is low with lithium battery
The reference value Q of frequency compensating power componentb_lowLithium battery active power reference value P as two-way DC/AC converter 1b_ref
With lithium battery reactive power reference qref Qb_ref, by Pb_refAnd Qb_refIt is decoupled, obtains the reference value I of current inner loop 1drefWith
Iqref(see the I in figuredAnd Iq), compared with actually measured inductive current, obtained error signal is by transient current ring PI
Controller is as two-way 1 modulated voltage signal U of DC/AC converterabc.It is as shown in Figure 6 that it controls original image.
It is illustrated in figure 7 the topology diagram of two-way DC/AC converter 2, Fig. 8 is that the control of two-way DC/AC converter 2 is former
Reason figure, rate-determining steps:
Track the control of network voltage and frequency: the voltage U of real-time sampling power gridgrid, pass through three-phase phase-locked loop and amplitude
Generate the output voltage U of two-way DC/AC converterscThe reference value f of (namely support voltage of isolated operation micro-capacitance sensor)nomAnd frequency
Rate Unom, the two is made comparisons, and by obtained difference by PI controller, is generated required for maintaining micro-capacitance sensor voltage and frequency stabilization
Active-power PmAnd reactive power Qm。
Current inner loop 2 controls: the P that control is generatedmThe function of supercapacitor in the energy storage control system generated with control
Rate superposition value PscIt is added the reference value P as total two-way DC/AC converter 2sc_ref, the two-way DC/AC of control generation is converted
The output reactive power Q of device 2mNeed to compensate power component reference value Q with the super capacitor high frequency of control productionsc_highIt is added and makees
For the reactive power reference qref Q of the super capacitor of total two-way DC/AC converter 2sc_ref, by active-power Psc_refWith idle function
Rate Qsc_refIt is decoupled, obtains the reference value of current inner loop 2, compared with actually measured inductive current, obtained error is believed
Number by transient current ring PI controller as two-way 2 modulated voltage signal of DC/AC converter.
The present invention has high power density, fast response time, charge and discharge number almost unrestricted using supercapacitor
The advantages of, decomposition control is carried out to power, using the high frequency of supercapacitor balance power, fluctuation within a narrow range, while being provided micro-
The voltage and frequency reference of network system；Have energy density big using lithium battery, the limited feature of charge and discharge number is main to control
Power-balance in micro-capacitance sensor processed, while absorbing low frequency power；The final stabilization for realizing micro-capacitance sensor and the safety continuous to load
Power supply avoids new energy power swing from interfering micro-capacitance sensor bring, the final power quality for realizing important load in micro-capacitance sensor
And power supply reliability, realize the safe and stable operation of micro-capacitance sensor.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
The embodiment of the present invention is described in conjunction with attached drawing above, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form, all of these belong to the protection of the present invention.
Claims (7)
1. the micro-capacitance sensor isolated operation mode control method for coordinating containing lithium battery and super capacitor, which is characterized in that micro- electricity
Net includes photovoltaic generating system, joint energy-storage system, load and micro electric network coordination controller；Photovoltaic generating system, joint energy storage
System and load pass through switch respectively and are connected to public exchange bus；
Joint energy-storage system includes lithium battery energy storage battery unit and super capacitor storage unit；
The lithium battery energy storage battery unit includes lithium battery, two-way DC/DC converter 1 and two-way DC/AC converter 1；The lithium electricity
Pond is connected with two-way DC/DC converter 1, and two-way DC/DC converter 1 is connect with two-way DC/AC converter 1；
The super capacitor storage unit includes super capacitor, two-way DC/DC converter 2 and two-way DC/AC converter 2；It is described
Super capacitor is connected with two-way DC/DC converter 2, and two-way DC/DC converter 2 is connect with two-way DC/AC converter 2；
The photovoltaic generating system is controlled by photovoltaic power generation local controller, and the joint energy-storage system is controlled by joint energy storage system
System local controller；The micro electric network coordination controller loads reality output active power signal P according to micro-capacitance sensorload, load
Reactive power Qload, photovoltaic generating system output power PV, lithium battery state-of-charge SOCbAnd the charge and discharge of super capacitor
Depth UdscIt determines photovoltaic generating system and combines the coordinated control instruction of energy-storage system, and control instruction is issued into photovoltaic respectively
Generate electricity local controller and joint energy-storage system local controller；
The photovoltaic power generation local controller and the control instruction control based on the received respectively of joint energy-storage system local controller
The current transformer for making respective system carries out power tracking control, realizes photovoltaic generating system and combines the coordinated control of energy-storage system.
2. the micro-capacitance sensor isolated operation mode control method for coordinating according to claim 1 containing lithium battery and super capacitor,
It is characterized in that, micro electric network coordination controller determines photovoltaic generating system and combines the method for the coordinated control instruction of energy-storage system
It is as follows:
Determine that micro-capacitance sensor loads real output signal PloadWith the output power P of photovoltaic generating systemVDifference active power
Δ P, expression formula are as follows: △ P=Pload-PV；
Respectively to difference active power value Δ P and load reactive power QloadIt is decomposed, obtains the benefit of lithium battery and super capacitor
Repay power component；
Judge the state-of-charge SOC of lithium batterybAnd the depth of discharge U of super capacitordsc, lithium is controlled in conjunction with the symbol of Δ P
The operating status of battery and super capacitor.
3. the micro-capacitance sensor isolated operation mode control method for coordinating according to claim 2 containing lithium battery and super capacitor,
It is characterized in that, decomposing to difference active power Δ P, the compensation real power component of lithium battery and super capacitor is obtained
Method particularly includes:
Step 1: difference active power value Δ P is decomposed using predetermined low-pass filter, obtains lithium battery low-frequency compensation
The reference value P of real power componentb_low, then with difference DELTA P subtract Pb_lowSuper capacitor high frequency is obtained to need to compensate active power
Component reference value Psc_high, it is shown below；
Step 2: reactive power Q will be loaded using predetermined low-pass filterloadDecompose, obtain lithium battery low-frequency compensation without
The reference value Q of function power componentb_low, then with load reactive power QloadSubtract the reference of lithium battery low-frequency compensation reactive power component
Value Qb_lowIt obtains super capacitor high frequency and needs compensating power component reference value Qsc_high, it is shown below；
Wherein s integral function, T time step-length.
4. the micro-capacitance sensor isolated operation mode control method for coordinating according to claim 3 containing lithium battery and super capacitor,
It is characterized in that, the parameter determination method of the low-pass filter is as follows:
Maximum service life (MSL) N and maximum allowable charge and discharge number M is used with lithium batterymaxIt is secondary, determine that daily lithium battery is permitted
Perhaps charge and discharge number is
If the photovoltaic generating system working time is at when T1 to T2, then the frequency of photovoltaic power fluctuation is balanced with lithium batteryThe power compensation frequency critical value of lithium battery and super capacitor is set with this.
5. the micro-capacitance sensor isolated operation mode control method for coordinating according to claim 2 containing lithium battery and super capacitor,
It is characterized in that, judging the state-of-charge SOC of lithium batterybAnd the depth of discharge U of super capacitordsc, in conjunction with the symbol of Δ P
To control the operating status of lithium battery and super capacitor method particularly includes:
(1) as Δ P < 0, photovoltaic generation power is greater than load power at this time, needs energy storage device to absorb extra power, to storage
The state-of-charge of energy device is judged:
1-1) work as SOCb<SOCb_maxAnd Udsc<Udsc_maxWhen, even Psc=Psc_high, Pb_ref=Pb_low；
1-2) work as SOCb<SOCb_maxAnd Udsc≥Udsc_maxWhen, super capacitor state is more than upper limit value at this time, and super capacitor is arranged
For lithium battery charging, this season Psc=Psc_high-Psc_disc, Pb_ref=Pb_low+Psc_disc；
1-3) work as SOCb≥SOCb_maxAnd Udsc<Udsc_maxWhen, lithium battery state is more than upper limit value at this time, and setting lithium battery is super
Grade capacitor charging, this season Psc=Psc_high+Pb_disc, Pb_ref=Pb_low-Pb_disc；
1-4) work as SOCb≥SOCb_maxAnd Udsc≥Udsc_maxWhen, photovoltaic generating system is switched into AGC mould by MPPT mode at this time
Formula limits its generated energy, so that Δ P > 0, load power is preferentially provided by lithium battery and super capacitor, switchs to step 2-5)；
1-5) work as SOCb≤SOCb_minAnd Udsc≤Udsc_minWhen, Psc=Psc_high+Psc_c, Pb_ref=Pb_low+Pb_c；
(2) as Δ P > 0, load power is greater than photovoltaic power at this time, needs energy storage device discharging compensation active power difference, right
The state-of-charge of energy storage device is judged:
2-1) work as SOCb>SOCb_minAnd Udsc>Udsc_minWhen, even Psc=Psc_high；Pb_ref=Pb_low；
2-2) work as SOCb>SOCb_minAnd Udsc≤Udsc_minWhen, super capacitor state is in lower limit value at this time, and setting lithium battery is
Super capacitor charging, this season Psc=Psc_high+Psc_c, Pb_ref=Pb_low-Psc_c；
2-3) work as SOCb≤SOCb_minAnd Udsc>Udsc_minWhen, lithium battery is in lower limit value at this time, and setting super capacitor is lithium electricity
Pond charging, this season Psc=Psc_high-Pb_c, Pb_ref=Pb_low+Pb_c；
2-4) work as SOCb≤SOCb_minAnd Udsc≤Udsc_minWhen, it needs to cut off common load step by step at this time, so that Δ P < 0, passes through
Photovoltaic generating system preferentially gives joint energy-storage system to charge, so that energy-storage system carrying capacity is unlikely to too low and damages, switchs to walk
Rapid 1-5)；
2-5) work as SOCb≥SOCb_maxAnd Udsc≥Udsc_maxWhen, Psc=Psc_high-Psc_disc, Pb_ref=Pb_low-Pb_disc；
(3) as Δ P=0, photovoltaic power is equal to load power at this time, and energy-storage system is exchanged with micro-capacitance sensor inactivity, but this
When energy storage device between can carry out Power Exchange:
3-1) work as Udsc>Udsc_maxAnd SOCb<SOCb_maxWhen or Udsc>Udsc_minAnd SOCb<SOCb_min, supercapacitor is set
It charges to lithium battery, even Psc=-Psc_disc, Pb_ref=Psc_disc；
3-2) work as Udsc<Udsc_maxAnd SOCb>SOCb_maxWhen or Udsc<Udsc_minAnd SOCb>SOCb_minWhen, setting lithium battery to
Supercapacitor charging, even Psc=Pb_disc, Pb_ref=-Pb_disc
3-3) work as Udsc≥Udsc_maxAnd SOCb≥SOCb_maxWhen, photovoltaic generating system is switched into AGC mould by MPPT mode at this time
Formula limits its generated energy, so that Δ P > 0, load power is preferentially provided by lithium battery and super capacitor, switchs to step 2-5)；
3-4) work as Udsc≤Udsc_minAnd SOCb≤SOCb_minWhen, it needs to cut off common load step by step at this time, so that Δ P < 0, passes through
Photovoltaic generating system preferentially gives joint energy-storage system to charge, so that energy-storage system carrying capacity is unlikely to too low and damages, switchs to walk
Rapid 1-5)；
If 3-5) state-of-charge of energy storage device is unsatisfactory for above-mentioned 3-1), 3-2), 3-3), 3-4) condition, energy storage device do not fill
Electricity does not also discharge；
Wherein SOCb_maxFor the charged maximum value of lithium battery, SOCb_minFor lithium battery charge state minimum value, Pb_refHave for lithium battery
Function value and power reference, Pb_discFor the discharge power of lithium battery, Pb_cFor the charge power of lithium battery, Udsc_maxFor super capacitor
Depth of discharge end voltage max, Udsc_minFor the depth of discharge end voltage minimum of super capacitor, PscFor energy storage
The power compensating value of supercapacitor, P in control systemsc_highNeed to compensate power component reference value for super capacitor high frequency,
Psc_discFor the discharge power of supercapacitor, Psc_cFor the charge power of supercapacitor, Psc_refFor super capacitor wattful power
Rate reference value.
6. the micro-capacitance sensor isolated operation mode control method for coordinating according to claim 1 containing lithium battery and super capacitor,
It is characterized in that, the current transformer of joint energy-storage system local controller control joint energy-storage system includes to convert to two-way DC/DC
The control of device 1 and 2, control two parts of two-way DC/AC converter 1 and 2, the control main target for DC/DC are to guarantee directly
Flow side voltage stabilization；Power outer ring, current inner loop double loop control are used to the control of DC/AC converter 1；DC/AC is become
The control of parallel operation 2 is using the control of tracking network voltage frequency, power outer ring and current inner loop three close-loop control.
7. the micro-capacitance sensor isolated operation mode control method for coordinating according to claim 1 containing lithium battery and super capacitor,
It is characterized in that, photovoltaic generating system preferentially runs on maximum power generating state, it is secondary to run on Automatic Generation Control state,
To adjust photovoltaic generation power；
Joint energy-storage system is to absorb or issue power come degree of sentencing according to difference active power Δ P, to guarantee micro-grid system
Power-balance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910742214.9A CN110474354B (en) | 2019-08-13 | 2019-08-13 | Micro-grid island operation mode coordination control method for lithium-containing battery and super capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910742214.9A CN110474354B (en) | 2019-08-13 | 2019-08-13 | Micro-grid island operation mode coordination control method for lithium-containing battery and super capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110474354A true CN110474354A (en) | 2019-11-19 |
| CN110474354B CN110474354B (en) | 2021-02-05 |
Family
ID=68510475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910742214.9A Active CN110474354B (en) | 2019-08-13 | 2019-08-13 | Micro-grid island operation mode coordination control method for lithium-containing battery and super capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110474354B (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110867879A (en) * | 2019-11-28 | 2020-03-06 | 中冶南方都市环保工程技术股份有限公司 | Coordination control method for energy storage system in isolated power grid operation |
| CN111277030A (en) * | 2020-02-27 | 2020-06-12 | 清华大学 | Sponge capacitance energy management method suitable for composite energy storage system |
| CN111641221A (en) * | 2020-05-19 | 2020-09-08 | 国网新疆电力有限公司电力科学研究院 | Micro-grid hybrid energy storage power coordination control method and system |
| CN111864852A (en) * | 2020-07-30 | 2020-10-30 | 合肥工业大学 | Charging and discharging control method and system for lithium battery of photovoltaic power generation system |
| CN112148059A (en) * | 2020-10-12 | 2020-12-29 | 四川科陆新能电气有限公司 | MPPT maximum power tracking method for photovoltaic power station |
| CN112671083A (en) * | 2020-12-09 | 2021-04-16 | 深圳市航天新源科技有限公司 | Multi-port converter circuit adapting to pulse load and control method thereof |
| CN112803483A (en) * | 2021-02-26 | 2021-05-14 | 黄俊星 | Control method and device of storage and charging integrated power system based on echelon utilization |
| CN113141057A (en) * | 2021-04-20 | 2021-07-20 | 北方民族大学 | Monitoring integrated device for microgrid and distributed control method |
| CN113555883A (en) * | 2021-07-15 | 2021-10-26 | 西安热工研究院有限公司 | Voltage balancing device and method for auxiliary thermal power generating unit AGC frequency modulation super capacitor bank |
| CN113612260A (en) * | 2021-08-31 | 2021-11-05 | 河北建投新能源有限公司 | Electric-hydrogen island direct current micro-grid operation control method |
| CN114221374A (en) * | 2021-11-05 | 2022-03-22 | 三峡大学 | Flexible platform area based on direct-current micro-grid and coordination control method thereof |
| CN115021302A (en) * | 2022-08-09 | 2022-09-06 | 四川大学 | Megawatt hybrid energy storage device with electric energy quality regulation function and control method |
| CN115663967A (en) * | 2022-11-15 | 2023-01-31 | 昆明理工大学 | Method and device for regulating power of energy storage battery, electronic equipment and storage medium |
| WO2023123679A1 (en) * | 2021-12-30 | 2023-07-06 | 北京天诚同创电气有限公司 | Microgrid control method and apparatus and regional power system |
| CN116799862A (en) * | 2023-08-15 | 2023-09-22 | 南方电网数字电网研究院有限公司 | MPPT and AGC dual-mode control fast switching method for photovoltaic power generation system |
| CN116937596A (en) * | 2023-09-05 | 2023-10-24 | 国网冀北电力有限公司廊坊供电公司 | Distributed photovoltaic energy storage system with grid-connected point voltage regulation function |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120104842A1 (en) * | 2010-10-28 | 2012-05-03 | Rolls-Royce Plc | Method and apparatus for controlling torque on the shaft of a generator |
| CN104184159A (en) * | 2014-06-28 | 2014-12-03 | 广东元景能源股份有限公司 | Co-scheduling strategy for multiple energy storage in distributed light storage micro-gird system |
| CN104242337A (en) * | 2014-08-14 | 2014-12-24 | 广东易事特电源股份有限公司 | Real-time coordination and control method of photovoltaic micro-grid system |
| CN104362656A (en) * | 2014-10-24 | 2015-02-18 | 东南大学 | Control method based on hybrid energy storage voltage source inverter (VSI) stabilizing microgrid power fluctuation |
| CN104466997A (en) * | 2014-11-28 | 2015-03-25 | 广东易事特电源股份有限公司 | Hierarchical distributed micro-grid energy-storage battery configuration method |
| CN104779630A (en) * | 2015-05-08 | 2015-07-15 | 武汉大学 | Capacity allocation method for hybrid energy storage system capable of restraining wind power output power fluctuation |
| CN105226629A (en) * | 2015-10-28 | 2016-01-06 | 江苏大学 | A kind of DC micro power grid system containing energy-storage units and control method |
| CN106451509A (en) * | 2016-10-20 | 2017-02-22 | 山西大学 | Energy management and control optimization method based on composite energy storage |
| US20190143841A1 (en) * | 2014-04-08 | 2019-05-16 | StoreDot Ltd. | Internally adjustable modular single battery systems for power systems |
| CN109904866A (en) * | 2019-02-22 | 2019-06-18 | 国电南瑞科技股份有限公司 | A kind of the micro-grid connection control method for coordinating and its system of polynary energy storage |
-
2019
- 2019-08-13 CN CN201910742214.9A patent/CN110474354B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120104842A1 (en) * | 2010-10-28 | 2012-05-03 | Rolls-Royce Plc | Method and apparatus for controlling torque on the shaft of a generator |
| US20190143841A1 (en) * | 2014-04-08 | 2019-05-16 | StoreDot Ltd. | Internally adjustable modular single battery systems for power systems |
| CN104184159A (en) * | 2014-06-28 | 2014-12-03 | 广东元景能源股份有限公司 | Co-scheduling strategy for multiple energy storage in distributed light storage micro-gird system |
| CN104242337A (en) * | 2014-08-14 | 2014-12-24 | 广东易事特电源股份有限公司 | Real-time coordination and control method of photovoltaic micro-grid system |
| CN104362656A (en) * | 2014-10-24 | 2015-02-18 | 东南大学 | Control method based on hybrid energy storage voltage source inverter (VSI) stabilizing microgrid power fluctuation |
| CN104466997A (en) * | 2014-11-28 | 2015-03-25 | 广东易事特电源股份有限公司 | Hierarchical distributed micro-grid energy-storage battery configuration method |
| CN104779630A (en) * | 2015-05-08 | 2015-07-15 | 武汉大学 | Capacity allocation method for hybrid energy storage system capable of restraining wind power output power fluctuation |
| CN105226629A (en) * | 2015-10-28 | 2016-01-06 | 江苏大学 | A kind of DC micro power grid system containing energy-storage units and control method |
| CN106451509A (en) * | 2016-10-20 | 2017-02-22 | 山西大学 | Energy management and control optimization method based on composite energy storage |
| CN109904866A (en) * | 2019-02-22 | 2019-06-18 | 国电南瑞科技股份有限公司 | A kind of the micro-grid connection control method for coordinating and its system of polynary energy storage |
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110867879B (en) * | 2019-11-28 | 2021-07-20 | 中冶南方都市环保工程技术股份有限公司 | Coordination control method for energy storage system in isolated power grid operation |
| CN110867879A (en) * | 2019-11-28 | 2020-03-06 | 中冶南方都市环保工程技术股份有限公司 | Coordination control method for energy storage system in isolated power grid operation |
| CN111277030A (en) * | 2020-02-27 | 2020-06-12 | 清华大学 | Sponge capacitance energy management method suitable for composite energy storage system |
| CN111277030B (en) * | 2020-02-27 | 2021-08-27 | 清华大学 | Sponge capacitance energy management method suitable for composite energy storage system |
| CN111641221A (en) * | 2020-05-19 | 2020-09-08 | 国网新疆电力有限公司电力科学研究院 | Micro-grid hybrid energy storage power coordination control method and system |
| CN111641221B (en) * | 2020-05-19 | 2022-05-10 | 国网新疆电力有限公司电力科学研究院 | Micro-grid hybrid energy storage power coordination control method and system |
| CN111864852A (en) * | 2020-07-30 | 2020-10-30 | 合肥工业大学 | Charging and discharging control method and system for lithium battery of photovoltaic power generation system |
| CN112148059A (en) * | 2020-10-12 | 2020-12-29 | 四川科陆新能电气有限公司 | MPPT maximum power tracking method for photovoltaic power station |
| CN112148059B (en) * | 2020-10-12 | 2022-07-05 | 四川科陆新能电气有限公司 | MPPT maximum power tracking method for photovoltaic power station |
| CN112671083A (en) * | 2020-12-09 | 2021-04-16 | 深圳市航天新源科技有限公司 | Multi-port converter circuit adapting to pulse load and control method thereof |
| CN112803483A (en) * | 2021-02-26 | 2021-05-14 | 黄俊星 | Control method and device of storage and charging integrated power system based on echelon utilization |
| CN112803483B (en) * | 2021-02-26 | 2024-01-30 | 黄俊星 | Control method and device for storage and charging integrated power system based on echelon utilization |
| CN113141057A (en) * | 2021-04-20 | 2021-07-20 | 北方民族大学 | Monitoring integrated device for microgrid and distributed control method |
| CN113141057B (en) * | 2021-04-20 | 2024-01-26 | 北方民族大学 | Monitoring integrated device for micro-grid and distributed control method |
| CN113555883B (en) * | 2021-07-15 | 2023-02-24 | 西安热工研究院有限公司 | Voltage balancing device and method for auxiliary thermal power generating unit AGC frequency modulation super capacitor bank |
| CN113555883A (en) * | 2021-07-15 | 2021-10-26 | 西安热工研究院有限公司 | Voltage balancing device and method for auxiliary thermal power generating unit AGC frequency modulation super capacitor bank |
| CN113612260A (en) * | 2021-08-31 | 2021-11-05 | 河北建投新能源有限公司 | Electric-hydrogen island direct current micro-grid operation control method |
| CN114221374A (en) * | 2021-11-05 | 2022-03-22 | 三峡大学 | Flexible platform area based on direct-current micro-grid and coordination control method thereof |
| CN114221374B (en) * | 2021-11-05 | 2024-06-11 | 三峡大学 | Flexible platform area based on direct-current micro-grid and coordination control method thereof |
| WO2023123679A1 (en) * | 2021-12-30 | 2023-07-06 | 北京天诚同创电气有限公司 | Microgrid control method and apparatus and regional power system |
| CN115021302A (en) * | 2022-08-09 | 2022-09-06 | 四川大学 | Megawatt hybrid energy storage device with electric energy quality regulation function and control method |
| CN115021302B (en) * | 2022-08-09 | 2022-11-22 | 四川大学 | Control method of megawatt hybrid energy storage device with electric energy quality regulation function |
| CN115663967A (en) * | 2022-11-15 | 2023-01-31 | 昆明理工大学 | Method and device for regulating power of energy storage battery, electronic equipment and storage medium |
| CN116799862A (en) * | 2023-08-15 | 2023-09-22 | 南方电网数字电网研究院有限公司 | MPPT and AGC dual-mode control fast switching method for photovoltaic power generation system |
| CN116799862B (en) * | 2023-08-15 | 2024-04-26 | 南方电网数字电网研究院有限公司 | MPPT and AGC dual-mode control fast switching method for photovoltaic power generation system |
| CN116937596A (en) * | 2023-09-05 | 2023-10-24 | 国网冀北电力有限公司廊坊供电公司 | Distributed photovoltaic energy storage system with grid-connected point voltage regulation function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110474354B (en) | 2021-02-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110474354A (en) | Micro-capacitance sensor isolated operation mode control method for coordinating containing lithium battery and super capacitor | |
| CN107222013B (en) | Independent photovoltaic mixed energy storage system energy control method | |
| Abusara et al. | Line-interactive UPS for microgrids | |
| CN104810858B (en) | A kind of light stores up the control method of micro-grid connection electricity generation system | |
| CN102983589B (en) | Control method of grid friendly type distributed power source based on hybrid energy storage | |
| CN105375512B (en) | The power coordination control method of hybrid energy-storing in light storing cogeneration system | |
| CN109904866B (en) | Multi-energy-storage microgrid grid-connected coordination control method and system | |
| Jia et al. | Design of hybrid energy storage control system for wind farms based on flow battery and electric double-layer capacitor | |
| Othman et al. | Progress in control and coordination of energy storage system‐based VSG: a review | |
| CN104242329A (en) | Micro-grid hybrid energy storage system power distribution method based on fuzzy control rules | |
| CN104362656A (en) | Control method based on hybrid energy storage voltage source inverter (VSI) stabilizing microgrid power fluctuation | |
| CN112086997A (en) | Photovoltaic coordination frequency modulation control method based on variable power tracking and super capacitor storage | |
| CN102496967B (en) | Wind-power trend optimizing system based on fast energy storage and control method thereof | |
| CN111371120A (en) | Micro-grid smooth switching control system and method based on LCL grid-connected inverter | |
| CN108599263A (en) | A kind of virtual synchronous generation control method with accumulator SOC feedbacks | |
| Zhu et al. | Coordination control strategy for battery-ultracapacitor hybrid energy storage system in microgrids with unbalanced and nonlinear loads | |
| CN113824146A (en) | Wind turbine transient characteristic improving method based on wind storage integration | |
| Oureilidis et al. | Microgrid wireless energy management with energy storage system | |
| Ismail et al. | A multi-objective control scheme of a voltage source converter with battery–supercapacitor energy storage system used for power quality improvement | |
| CN105322532A (en) | Direct current micro-grid energy storage optimization and coordination control method | |
| CN114977213A (en) | Coordination control method for direct-current micro-grid containing wind power generation and hybrid energy storage | |
| Díaz et al. | Stability analysis for isolated ac microgrids based on pv-active generators | |
| CN104810845A (en) | Distributed optical energy storage participated bus regulation self-adaptive control device and method | |
| Molina et al. | Power flow control of microgrid with wind generation using a DSTATCOM-UCES | |
| CN103532132A (en) | Control method of self-adaptive mobile microgrid energy interaction system |
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 |