CN110137993A - A kind of DC micro power grid system complementary based on the storage of light wave - Google Patents
A kind of DC micro power grid system complementary based on the storage of light wave Download PDFInfo
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
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Abstract
The present invention discloses a kind of DC micro power grid system complementary based on the storage of light wave, including generator unit system, load cell and the DC bus for connecting generator unit system with load cell, the generator unit system includes Wave energy generating system and its AC/DC converter, solar power system and its BOOST converter, energy-storage system and its power-distribution management system, two-way DC/DC converter, the energy-storage system is mixed energy storage system, including super capacitor and battery, the load cell includes DC load and its DC/DC converter, AC load and its DC/AC converter, dc circuit breaker；The operating status of energy-storage system is adjusted according to the variation of flow of power between generator unit and load cell, form three kinds of operation reserves of the DC micro power grid system, including energy-storage system charge operation strategy, energy storage system discharges operation reserve and energy-storage system limit charge operation strategy, the utilization rate of distributed energy is improved, micro-grid system stable operation is promoted.
Description
Technical field
The present invention relates to the technical fields of micro-capacitance sensor renewable energy power generation, are stored up more particularly, to one kind based on light wave
Complementary DC micro power grid system.
Background technique
With the fast development that China island is built, island is continuously increased the demand of the energy, and micro-capacitance sensor is as a kind of
Active platform integrates distributed power generation and load, so that distributed generation technology has been obtained more flexible utilization, simultaneously
Also the concern of domestic and international researcher has been obtained.
Studies have shown that at present wave energy as a kind of potential clean reproducible energy of richness, if by reasonable development, can
Meet the 10% of global total electricity consumption demand, is equivalent to the summation of global large hydropower station actual power generation.In addition, marine construction
Solar power generation can not only save construction area, but also can make full use of solar energy abundant, therefore, by marine wave
Wave can combine research with solar power generation and be of great significance, however, seawave power generation power output and island weather not really
The influence that qualitative, uncontrollability runs a combination thereof can not be ignored, with the fast development of energy storage technology, the joint fortune of light wave storage
Row can meet the planning requirement of wave and solar power generation to a certain extent.On the other hand, the current most common micro-capacitance sensor
Application mode is exchange micro-capacitance sensor, but most of generations of electricity by new energy output is direct current, using the multiple transform device of AC-DC-AC
It will also result in energy loss.
Summary of the invention
The present invention is to overcome island wave power output and island weather uncontrollability that light wave combination generated output is caused to export
Uncertainty introduces the power distribution of energy-storage system regulating system, improves the utilization rate of distributed energy, and improve existing exchange
Micro-capacitance sensor is because the phenomenon that energy loss, proposing a kind of DC micro power grid system complementary based on the storage of light wave caused by multiple transform device.
In order to reach above-mentioned technical effect, technical scheme is as follows:
A kind of DC micro power grid system complementary based on the storage of light wave, which is characterized in that the DC micro power grid system includes
Generator unit system, load cell and the DC bus for connecting generator unit system with load cell, the generator unit system
System include Wave energy generating system and its AC/DC converter, solar power system and its BOOST converter, energy-storage system and
Its power-distribution management system, two-way DC/DC converter, the energy-storage system be mixed energy storage system, including super capacitor and
Battery, super capacitor and battery are connected to the same end of the Energy Management System side by side, power-distribution management system
The other end is connected with the side of the two-way DC/DC converter of energy-storage system, the other side of the two-way DC/DC converter of energy-storage system with
DC bus is connected；The AC/DC converter side of the Wave energy generating system is connected with Wave energy generating system, the other side with
DC bus is connected；The BOOST converter side of the solar power system is connected with solar power system, the other side with
DC bus is connected；The load cell includes DC load and its DC/DC converter, AC load and its DC/AC converter
And dc circuit breaker；The DC bus passes sequentially through dc circuit breaker, and that direct current is connected with the DC/DC converter of DC load is negative
Lotus connects AC load with the DC/DC converter of AC load by dc circuit breaker；
The operation reserve of the DC micro power grid system is according to function between the generator unit system and the load cell
The variation of rate flowing adjusts the operating status of mixed energy storage system in generator unit system, by generator unit system, DC bus
And the power of load cell, the DC/DC converter of energy-storage system is input to by power control module connection, through pulsewidth modulation
Three kinds of operation reserves are formed afterwards, and three kinds of operation reserves include energy-storage system charge operation strategy, energy storage system discharges operation
Strategy and energy-storage system limit charge operation strategy.
The Wave energy generating system of DC micro power grid system includes float and generator, and the float is set to the power generation
The top of machine, it is assumed that float is in the sea that the depth of water is l, and enables sea face z (x, y)=0, practical ocean incidence wave when without wave
It can be considered that a series of superposition of different frequency component sine waves, wind and sea effect generate wave, wave incidence wave drives float
It moves up and down, drives the generator rotation power generation, the hydrodynamic force that float is subject in wave indicates are as follows:
fwt=fs+fr+fb
Wherein, fwtIt indicates the hydrodynamic force that float is subject to, is made of wave-excited force, radiant force and water purification restoring force；fsTable
Show wave-excited force；frIndicate radiant force；fbIndicate hydrostatic restoring force；
According to Newton's law,
Wherein, t is time variable,Second dervative for float displacement about t indicates acceleration；fv(t) stream is indicated
Body viscous force；ff(t) frictional force is indicated；fg(t) electromagnetic force of generator is indicated；The quality of m expression float moving component；
When float is in perfect fluid, ignore fluid viscous power and frictional force, according to Newton's law,
Wherein, ma(ω) indicates that additional mass, ω indicate that float runs angular frequency；Ra(ω) indicates control parameter generator；
ksIndicate fixed constant；Indicate float movement velocity；The speed of z (t) table float；Remaining variables meaning is the same as described previously one
It causes；
After carrying out Fourier transformation, the average output power of Wave energy generating system are as follows:
Wherein, pgIndicate the average output power of wave electric power system；RgIndicate a control parameter of generator；k1、kc
Indicate control parameter generator, remaining variables meaning is the same as described previously consistent.
The generator of the Wave energy generating system tracks wavy hair using the MPPT controller based on crossover algorithm in length and breadth
The maximum power generation state of electricity, the effect of MPPT are that the maximum power point of tracking wave-energy power generation makes defeated to be controlled
Power out reaches maximum value, improves generating efficiency.Crossover algorithm calculating process is as follows in length and breadth:
S1, the objective function for constructing Wave energy generating system control program:
P=pgPu1+TemPu2
Wherein, P indicates the objective function of Wave energy generating system control program；pgIndicate the average defeated of wave electric power system
Power out；Pu1、Pu2Equal b indicates penalty factor；Tem indicates intermediate parameters, and Tem is indicated are as follows:
Wherein, Ra, RgIndicate the control parameter of generator；ω indicates that float moves angular frequency；k1、kcIndicate generator
Control parameter, ksIndicate fixed constant；maIndicate additional mass；M indicates float quality；
S2, the velocity of wave translation and float displacement initial value for obtaining Wave energy generating system place sea level, as initialization kind
The particle of group, for iterating to calculate, and is arranged maximum number of iterations；
S3, the fitness function according to population, calculate the individual adaptation degree of population, and the individual of the population is generator control
Parameter processed, fitness function indicate are as follows:
H=h (P, pg, Pu1,Pu2)
Wherein, H indicates fitness function；h(P,pg,pu1,pu2) indicate that corresponding fitness function relationship, remaining parameter are same
Meaning described previously is consistent；
S4, according to the resulting individual adaptation degree of step S3, execute the iterative calculation of horizontal and vertical crossover operator；
S5, judge whether the iterative calculation of horizontal and vertical crossover operator reaches maximum number of iterations, if so, exporting this
When Wave energy generating system control parameter generator；Otherwise, return step step S3 is repeated.
The solar power system is made of multiple photovoltaic battery panels, the output power of solar power system are as follows:
PPV=APVGηPVηinv
Wherein, PPVIndicate the output power of solar power system；APVThe face of solar irradiation radiation is received for photovoltaic panel
Product；G is light radiation numerical value；ηPVFor photovoltaic module energy conversion efficiency；ηinvFor BOOST converter transfer efficiency.
The solar power system tracks solar energy maximum generation function using the MPPT controller based on disturbance observation method
Rate state, voltage, the current signal of solar power system are input to MPPT controller, are converted to control through MPPT controller
Parameter aM, the end voltage for the DC bus being connected with solar power system BOOST converter is transformed to separately through constant-voltage controller
One control parameter aB, two control parameters converge access switching module, it is converted into parameter a, is modulated by pulse width modulator
Afterwards, the BOOST converter of solar power system is accessed.
The disturbance observation method calculating process of MPPT control is as follows:
1) voltage and current signals that solar power system exports are adopted respectively by voltage, current sensor
Sample obtains the initial value of solar power system output voltage and electric current；
2) output power of solar power system is calculated by the output voltage of solar power system and current value；
3) the adjacent output power change direction twice for judging solar power system, determines applying for next step control signal
Add；
If 4) variable quantity of output power is greater than zero, the interference radiating way controlled originally is kept, obtains output power；It is no
Then, 2) interference radiating way for changing control signal, returns to step；
The power output of the battery of the energy-storage system and super capacitor according to generator unit system and load cell it
Between difference power adjust variation, batteries to store energy capacity are as follows:
Eba=mbaCbaUba/106
Wherein, CbaFor the rated capacity of cell batteries；UbaFor voltage rating；mbaFor the cascade quantity of battery；EbaIt stores
Battery energy storage capacity；
Battery is with C10Time rate electric discharge, the rated output power P of battery groupbatAre as follows:
Pbat=mbaCbaUba/107
Wherein, PbatFor the rated output power of battery group, remaining meaning of parameters is consistent as mentioned before；
The super capacitor peak power output of the energy-storage system:
Pscmax=nUscmaxIscmax/106
Wherein, n indicates the cascade quantity of supercapacitor；UscmaxIndicate end voltage；IscmaxIndicate monomer supercapacitor
Maximum operating currenbt, the power of the super capacitor charge and discharge is no more than its peak power output.
Ignore the power loss of the DC bus, flow of power between the generator unit system and the load cell
Change the equilibrium relation embodied are as follows:
Psource=Pinv+Pload
Wherein, PinvIt is expressed as the power loss of all converters of electricity generation system；PloadIndicate the load power of load cell
The sum of；PsourceIndicate the power that generator unit system issues:
Psource=Pg+Ppv+Psto
Wherein, PgIndicate the power that generator unit system Wave energy electricity generation system issues；PpvIndicate solar power generation system
The power that system issues；PstoIt indicates the super capacitor of energy-storage system and the power that battery collective effect issues, indicates are as follows:
Psto=Pbat+Psc
Wherein, PbatIndicate the output power of battery in the energy-storage system；PscIndicate super electricity in the energy-storage system
The output power of appearance.
The power of the energy-storage system passes through power controller coordinated balance Wave energy generating system, solar power system
And the power between load cell, obtain the power distribution of energy-storage system are as follows:
Psto_ref=Psource_ref-Pg_ref-Ppv_ref
Psc_ref=Psto_ref-Pbat_ref
Wherein, Psto_refIndicate that energy-storage system receives the power instruction of distribution, Psource_refIndicate generator unit system hair
Power instruction out, Pg_refIndicate the output power instruction of the Wave energy generating system of generator unit system, Ppv_refIndicate the sun
The output power instruction of energy electricity generation system；S is differentiation element；1/ (ts+1) indicates low-pass filtering link；T is time constant；
The power loss for ignoring converter is obtained according to the difference power between generator unit and load cell:
Psto=Pload-Pg-Ppv
Wherein, PgIndicate the power that generator unit system Wave energy electricity generation system issues；PpvIndicate solar power generation system
The power that system issues；PstoIndicate the super capacitor of energy-storage system and the sum of the power that battery collective effect issues, enable Δ P '=
Pg-Ppv-Pload, form the operation reserve of the direct-current grid:
1) whenWhen DC micro power grid system isolated operation, the wave-energy power generation system of generator unit system
System is controlled with solar power system using MPPT, the energy-storage system charge operation of generator unit；
2) whenWhen DC micro power grid system isolated operation, the wave-energy power generation system of generator unit system
System is controlled with solar power system using MPPT, the energy storage system discharges operation of generator unit system；
3) whenWhen DC micro power grid system is incorporated into the power networks, the Wave energy generating system of generator unit system with
Solar power system is controlled using MPPT, the energy-storage system limit charge operation of generator unit.
Compared with prior art, the beneficial effect of technical solution of the present invention is: the present invention discloses a kind of mutual based on the storage of light wave
The DC micro power grid system of benefit, each power generating modules of DC micro power grid system only pass through one layer of transformation parallel operation and direct current is female
Line is connected, and avoids existing exchange micro-capacitance sensor because caused by multiple transform device the phenomenon that energy loss；The wave energy of generator unit system
Electricity generation system uses the MPPT controller based on crossover algorithm in length and breadth, Efficient Solution control parameter generator, optimization wave energy hair
Electric system output power；The solar power system of generator unit system is using the MPPT control based on disturbance observation method, more preferably
The output power of ground tracking solar power system；In addition, the operation reserve of direct-current grid reaches system power more rationally
Distribution, improve the utilization rate of distributed energy.
Detailed description of the invention
Fig. 1 is the DC micro power grid system structural block diagram of the embodiment of the present invention；
Fig. 2 is the structural analysis figure of float type wave power generation device；
Fig. 3 is the flow chart of crossover algorithm in length and breadth；
Fig. 4 is the flow chart of disturbance observation method；
Fig. 5 is the output power that tradition MPPT acts on lower Wave energy generating system；
Fig. 6 is the output power that crossover algorithm and disturbance observation method act on lower Wave energy generating system in length and breadth；
Fig. 7 is the DC bus-bar voltage figure of generator unit system side；
Fig. 8 is the DC bus-bar voltage figure of load cell side；
When Fig. 9 is direct-current grid isolated operation, energy-storage system charge operation power diagram；
When Figure 10 is direct-current grid isolated operation, energy storage system discharges run power diagram；
When Figure 11 is incorporated into the power networks for direct-current grid, energy-storage system runs power diagram.
Specific embodiment
The following further describes the technical solution of the present invention with reference to the accompanying drawings and examples, being given for example only property of attached drawing
Illustrate, should not be understood as the limitation to this patent.
A kind of DC micro power grid system complementary based on the storage of light wave proposed by the present invention, wherein DC micro power grid system is as schemed
Shown in 1, referring to Fig. 1, including generator unit system, load cell and the direct current mother for connecting generator unit system with load cell
Line, generator unit system include Wave energy generating system and its AC/DC converter, solar power system and its BOOST transformation
Device, energy-storage system and its power-distribution management system, two-way DC/DC converter, wherein energy-storage system is hybrid energy-storing, including
Super capacitor and battery, super capacitor and battery are connected to the same end of the Energy Management System, energy distribution side by side
The other end of management system is connected with the side of the two-way DC/DC converter of energy-storage system, the two-way DC/DC converter of energy-storage system
The other side is connected with DC bus；The AC/DC converter side of Wave energy generating system is connected with Wave energy generating system, another
Side is connected with DC bus；The BOOST converter side of solar power system is connected with solar power system, the other side with
DC bus is connected；Load cell includes DC load and its DC/DC converter, AC load and its DC/AC converter, direct current
Breaker；
Referring to Fig. 1, DC bus can be connected by DC/AC converter with bulk power grid is exchanged, achievable direct-current grid system
System is incorporated into the power networks, and on the other hand, DC bus passes through the connection of the DC/DC converter of load side dc circuit breaker and DC load
DC load connects AC load by the DC/DC converter of load side dc circuit breaker and AC load；IwFor wave energy
The output electric current of generator unit, UwFor the output voltage of Wave energy generating system, PgFor the output power of Wave energy generating system；
IPVFor the output electric current of solar power system, UPVFor the output voltage of solar power system, PpvFor solar power system
Output power；UbusFor the voltage between the DC bus of micro-capacitance sensor；PbatFor battery output power；PloadFor load power.
The Wave energy generating system of DC micro power grid system is as shown in Fig. 2, Wave energy generating system includes float and power generation
Machine, the float are set to the top of the generator, it is assumed that float is in the sea that the depth of water is l, establishes seat as shown in Figure 2
Mark system, and sea z (x, y)=0, practical ocean incidence wave when without wave is enabled to can be considered a series of different frequency component sine waves
Superposition, wind and sea effect generate wave, and wave drives float to move up and down to drive the generator rotation power generation, wave
The hydrodynamic force that middle float is subject to indicates are as follows:
fwt=fs+fr+fb
Wherein, fwtIt indicates the hydrodynamic force that float is subject to, is made of wave-excited force, radiant force and water purification restoring force；fsTable
Show wave-excited force；frIndicate radiant force；fbIndicate hydrostatic restoring force；
According to Newton's law,
Wherein, t is time variable,Second dervative for float displacement about t, as acceleration；fv(t) stream is indicated
Body viscous force；ff(t) frictional force is indicated；fg(t) permanent-magnetism linear motor electromagnetic force is indicated；The quality of m expression float moving component；
When float is in perfect fluid, ignore research object fluid viscous power and frictional force, according to Newton's law,
Wherein, ma(ω) indicates that additional mass, ω indicate the angular frequency of float movement；RaIndicate control parameter generator；ks
Indicate fixed constant；Indicate float movement velocity；The speed of z (t) table float；Remaining variables meaning is the same as described previously one
It causes；
After carrying out Fourier transformation, the average output power of Wave energy generating system are as follows:
Wherein, pgIndicate the average output power of wave electric power system；RgIndicate a control parameter of generator；k1、kc
Indicate control parameter generator, remaining variables meaning is the same as described previously consistent.
Referring to Fig. 1, the generator both ends of Wave energy generating system connect MPPT controller, and use is calculated based on intersection in length and breadth
The maximum power generation state of the MPPT control tracking wave-activated power generation of method, crossover algorithm calculating process is as shown in figure 3, process in length and breadth
Steps are as follows:
S1, the objective function for constructing Wave energy generating system control program:
P=pgPu1+TemPu2
Wherein, P indicates the objective function of Wave energy generating system control program；pgIndicate the average defeated of wave electric power system
Power out；Pu1、Pu2Indicate penalty factor；Tem indicates intermediate parameters, and Tem is indicated are as follows:
Wherein, Ra, RgIndicate the control parameter of generator；ω indicates the angular frequency of float movement；k1、kcIndicate power generation
Machine control parameter, ksIndicate a fixed constant；maIndicate additional mass；M indicates float quality；
The velocity of wave translation and float displacement initial value on the place sea level of S2, acquisition Wave energy generating system, as initialization
For iterating to calculate, and maximum number of iterations is arranged in the particle of population；
S3, the fitness function according to population, calculate the individual adaptation degree of population, and the individual of the population is generator control
Parameter processed, fitness function indicate are as follows:
H=h (P, pg, Pu1,Pu2)
Wherein, H indicates fitness function；H (P, pg,pu1,pu2) indicate that corresponding fitness function relationship, remaining parameter are same
Meaning described previously is consistent；
S4, according to the resulting individual adaptation degree of step S3, execute the iterative calculation of horizontal and vertical crossover operator；
S5, judge whether the iterative calculation of horizontal and vertical crossover operator reaches maximum number of iterations, if so, exporting this
When Wave energy generating system optimal Generator control parameter；Otherwise, return step step S3 is repeated.
As shown in Figure 1, solar power system is made of multiple photovoltaic battery panels, the output power of solar power system
Are as follows:
PPV=APVGηPVηinv
Wherein, PPVIndicate the output power of solar power system；APVThe face of solar irradiation radiation is received for photovoltaic panel
Product；G is light radiation numerical value；ηPVFor photovoltaic module energy conversion efficiency；ηinvFor BOOST converter transfer efficiency.
Referring to Fig. 1, the DC bus end voltage being connected with solar power system BOOST converter becomes through constant-voltage controller
It is changed to control parameter aB；The solar power system is using the MPPT control tracking solar power generation based on disturbance observation method
State, voltage, the current signal of solar power system output are input to MTTP controller, are converted to control through MPPT controller
Parameter aM；Control parameter aBWith control parameter aMConverge access switching module and is converted into parameter a, parameter a pulse width modulator tune
After system, BOOST converter is accessed.
Referring to fig. 4, calculating process is as follows for the disturbance observation method calculating process of solar power system MPPT controller:
1) voltage and current signals that solar power system exports are adopted respectively by voltage, current sensor
Sample obtains the initial value of solar power system output voltage and electric current；
2) output power of solar power system is calculated by the output voltage of solar power system and current value；
3) the adjacent output power change direction twice for judging solar power system, determines applying for next step control signal
Add；
If 4) variable quantity of output power is greater than zero, the interference radiating way controlled originally is kept, obtains output power；It is no
Then, 2) interference radiating way for changing control signal, returns to step；
Traditional MPPT acts on lower light wave electricity generation system output power as shown in figure 5, using crossover algorithm and disturbance in length and breadth
The MPPT controller of observation acts on the power output figure of lower light wave electricity generation system as shown in fig. 6, comparison diagram 5 and Fig. 6 can be sent out
It is existing, though the two it is last average output power it is consistent, with combining crossover algorithm in length and breadth and disturbance observation method MPPT controller
The oscillation of light wave electricity generation system output power it is small, better than the electricity generation system power output effect under traditional MPPT effect.
The power output of energy storage system storage battery group and super capacitor group is according between generator unit system and load cell
Flow of power adjust, the parameter characteristic of energy-storage system unit composition is as shown in table 1.
Table 1
Batteries to store energy capacity are as follows:
Eba=mbaCbaUba/106
Wherein, CbaFor the rated capacity of cell batteries；UbaFor voltage rating；mbaFor the cascade quantity of battery；EbaIt stores
Battery energy storage capacity；
Battery is with C10Time rate electric discharge, the rated output power P of battery groupbatAre as follows:
Pbat=mbaCbaUba/107
Wherein, PbatFor the rated output power of battery group, remaining meaning of parameters meaning one as described in identical parameters above
It causes.
The super capacitor peak power output of the energy-storage system:
Pscmax=nUscmaxIscmax/106
Wherein, n indicates the cascade quantity of supercapacitor；CscIndicate super capacitor value；UscmaxIndicate end voltage；Iscmax
Indicate that the maximum operating currenbt of monomer supercapacitor, the power of the super capacitor charge and discharge are no more than its maximum work output
Rate.
Fig. 7 is the DC bus-bar voltage figure of generator unit system side, and Fig. 8 is the DC bus-bar voltage figure of load cell side,
It can be found that under the action of super capacitor and battery, light wave stores up the output voltage fluctuation of electricity generation system by comparison diagram 7 and Fig. 8
It is smaller.
Ignore the power loss of the DC bus, flow of power between the generator unit system and the load cell
Change the equilibrium relation embodied are as follows:
Psource=Pinv+Pload
Wherein, PinvIt is expressed as the power loss of all converters of electricity generation system；PloadIndicate the load function of load cell
The sum of rate；PsourceIndicate the power that generator unit system issues:
Psource=Pg+Ppv+Psto
Wherein, PgIndicate the power that generator unit system Wave energy electricity generation system issues；PpvIndicate solar power generation system
The power that system issues；PstoIt indicates the super capacitor of energy-storage system and the sum of the power of battery collective effect cooperation output, indicates
Are as follows:
Psto=Pbat+Psc
Wherein, PbatIndicate the output power of battery in energy-storage system；PscIndicate super capacitor in the energy-storage system
Output power.
The power output of Wave energy generating system and the solar power system be it is uncontrollable, energy-storage system include use
In the super capacitor and battery for absorbing or issuing smooth fluctuation power that absorb or issue high-frequency fluctuation power, energy storage system
The power of system passes through the function between power controller coordinated balance Wave energy generating system and solar power system, load cell
Rate obtains the power distribution of energy-storage system are as follows:
Psto_ref=Psource_ref-Pg_ref-Ppv_ref
Psc_ref=Psto_ref-Pbat_ref
Wherein, Psto_refIt indicates that energy-storage system receives the power instruction of distribution, is executed by energy management distribution system,
Psource_refIndicate the power instruction that generator unit system issues, Pg_refIndicate the Wave energy generating system of generator unit system
Output power instruction, Ppv_refIndicate the output power instruction of solar power system；S is differentiation element；1/ (ts+1) represents low
Pass filter link；T is time constant.
The power loss for ignoring converter is obtained according to the difference power between generator unit and load cell:
Psto=Pload-Pg-Ppv
Wherein, PgIndicate the power that generator unit system Wave energy electricity generation system issues；PpvIndicate solar power generation system
The power that system issues；PstoIt indicates the super capacitor of energy-storage system and the sum of the power of battery collective effect cooperation output, enables Δ
P '=Pg-Ppv-Pload, form the operation reserve of direct-current grid:
1) whenWhen DC micro power grid system isolated operation, the wave-energy power generation system of generator unit system
System is controlled with solar power system using MPPT, the energy-storage system charge operation of generator unit；
2) whenWhen DC micro power grid system isolated operation, the wave-energy power generation system of generator unit system
System is controlled with solar power system using MPPT, the energy storage system discharges operation of generator unit system；
3) whenWhen DC micro power grid system is incorporated into the power networks, the Wave energy generating system of generator unit system with
Solar power system is controlled using MPPT, the energy-storage system limit charge operation of generator unit.
Simulating, verifying is carried out for three of the above operation reserve, when Fig. 9 is direct-current grid isolated operation, energy-storage system function
Rate figure, in DC micro power grid system isolated operation, generator unit system only supports the fortune of direct-current grid itself load cell
Row, the wave-energy power generation of generator unit system, the output power of solar power system are positive value, i.e., in sending power shape
State is that the load cell of micro-grid system is powered.Under this operation reserve, wave-energy power generation, the solar energy hair of generator unit system
The power output of electric system and the bearing power difference of load cell are positive, and are less than the maximum discharge power of energy storage, such as Fig. 9 institute
Show, the output power fast response time of the super capacitor of energy-storage system, the fast power of fast throughput frequency fluctuation, battery output
Power PbatFor negative value, i.e. battery is in charged state, by the wave-energy power generation and solar power generation in generator unit system
Uncertain output power stores.
Energy storage system discharges power diagram when Figure 10 is direct-current grid isolated operation, under this operation reserve, generator unit system
The Wave energy generating system and solar power system of system have used MPPT control tracking maximum power point, but the function exported
Rate is not able to satisfy the consumption of micro-capacitance sensor own load unit load, wave-energy power generation, the solar power generation of generator unit system still
The output power of system is positive value, is powered for load cell, as shown in Figure 10, the super capacitor and battery of energy-storage system
Output power is positive value, i.e., energy-storage system is in electric discharge operating status, and the electric energy stored originally is discharged, stabilized by energy-storage system
The uncertainty of electricity generation system medium wave wave energy for generating electricity and solar power generation at this time.
Energy-storage system power diagram when Figure 11 is incorporated into the power networks for direct-current grid, when generator unit Wave energy generating system and
The output power of solar power system power needed for meeting direct-current grid load cell and big with the difference of load unit
In the maximum charge-discharge electric power of energy-storage system, direct-current grid is incorporated to exchange bulk power grid.Under this operation reserve, including direct current is micro-
The variation tendency of power consumed by load including network system load unit is exchanged between positive and negative, generator unit
The output power of Wave energy generating system, solar power system and super capacitor is positive, and big with the difference of load unit
In the maximum charge-discharge electric power of energy-storage system, show that DC micro power grid system may be used also in addition to meeting own load demand at this time
Electric energy supply is provided for bulk power grid load, improves the utilization rate of distributed energy, as shown in figure 11, the super electricity of energy-storage system
Hold fast throughput power, battery output power PbatValue be negative value, i.e., for uncontrollable power in excess export, energy storage system
System is stored, and battery is in limit charge operation state at this time.
Described in attached drawing positional relationship for only for illustration, should not be understood as the limitation to this patent；
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (10)
1. a kind of DC micro power grid system complementary based on the storage of light wave, which is characterized in that the DC micro power grid system includes hair
Electric unit system, load cell and the DC bus for connecting generator unit system with load cell, the generator unit system
Including Wave energy generating system and its AC/DC converter, solar power system and its BOOST converter, energy-storage system and its
Power-distribution management system, two-way DC/DC converter, the energy-storage system are mixed energy storage system, including super capacitor and storage
Battery, super capacitor and battery are connected to the same end of the Energy Management System side by side, power-distribution management system it is another
One end is connected with the side of the two-way DC/DC converter of energy-storage system, the other side of the two-way DC/DC converter of energy-storage system and direct current
Bus is connected；The AC/DC converter side of the Wave energy generating system is connected with Wave energy generating system, the other side and direct current
Bus is connected；The BOOST converter side of the solar power system is connected with solar power system, the other side and direct current
Bus is connected；The load cell includes DC load and its DC/DC converter, AC load and its DC/AC converter, direct current
Breaker；The DC bus passes sequentially through dc circuit breaker and connects DC load with the DC/DC converter of DC load, passes through
Dc circuit breaker connects AC load with the DC/DC converter of AC load；
The DC micro power grid system adjusts power generation list according to the variation of flow of power between generator unit system and load cell
The power of generator unit system, DC bus and load cell is passed through function by the operating status of mixed energy storage system in metasystem
Rate control module connects the DC/DC converter for being input to energy-storage system, three kinds of operation reserves of formation after pulsewidth modulation, and described three
Kind operation reserve includes energy-storage system charge operation strategy, energy storage system discharges operation reserve and energy-storage system limit charge operation
Strategy.
2. the DC micro power grid system complementary based on the storage of light wave according to claim 1, which is characterized in that the direct current is micro-
The Wave energy generating system of network system includes float and generator, and the float is set to the top of the generator, float
It moves up and down with wave, driven generator rotation generates electricity, and the hydrodynamic force that float is subject in wave indicates are as follows:
fwt=fs+fr+fb
Wherein, fwtIt indicates the hydrodynamic force that float is subject to, is made of wave-excited force, radiant force and water purification restoring force；fsIndicate wave
Unrestrained exciting force；frIndicate radiant force；fbIndicate hydrostatic restoring force；
According to Newton's law,
Wherein, t is time variable,Second dervative for float displacement about t indicates acceleration；fv(t) indicate that fluid is viscous
Stagnant power；ff(t) frictional force is indicated；fg(t) electromagnetic force of generator is indicated；The quality of m expression float moving component；
When float is in perfect fluid, ignore fluid viscous power and frictional force, according to Newton's law,
Wherein, ma(ω) indicates that additional mass, ω indicate that float runs angular frequency；Ra(ω) indicates control parameter generator；ksTable
Show fixed constant；Indicate float movement velocity；The speed of z (t) table float；Remaining variables meaning is the same as described previously consistent；
After carrying out Fourier transformation, the average output power of Wave energy generating system are as follows:
Wherein, pgIndicate the average output power of wave electric power system；RgIndicate a control parameter of generator；k1、kcEqual table
Show the control parameter of generator, remaining variables meaning is the same as described previously consistent.
3. the DC micro power grid system complementary based on the storage of light wave according to claim 2, which is characterized in that the wave energy
The generator of electricity generation system tracks the maximum power generation state of wave-activated power generation using the MPPT control based on crossover algorithm in length and breadth.
4. the DC micro power grid system complementary based on the storage of light wave according to claim 3, which is characterized in that the MPPT control
The calculating process of crossover algorithm in length and breadth of system is as follows:
S1, the objective function for constructing Wave energy generating system control program:
P=pgPu1+TemPu2
Wherein, P indicates the objective function of Wave energy generating system control program；pgIndicate the average output work of wave electric power system
Rate；Pu1、Pu2Indicate penalty factor；Tem indicates intermediate parameters, and Tem is indicated are as follows:
Wherein, Ra, RgIndicate the control parameter of generator；ω indicates that float moves angular frequency；k1、kcIndicate generator control
Parameter, ksIndicate fixed constant；maIndicate additional mass；M indicates float quality；
S2, the velocity of wave translation and float displacement initial value for obtaining Wave energy generating system place sea level, as initialization population
For iterating to calculate, and maximum number of iterations is arranged in particle；
S3, the fitness function according to population, calculate the individual adaptation degree of population, and the individual of the population is generator control ginseng
Number, fitness function indicate are as follows:
H=h (P, pg, Pu1,Pu2)
Wherein, H indicates fitness function；h(P,pg,pu1,pu2) indicating corresponding fitness function relationship, remaining parameter is the same as above
The meaning is consistent；
S4, according to the resulting individual adaptation degree of step S3, execute the iterative calculation of horizontal and vertical crossover operator；
S5, judge whether the iterative calculation of horizontal and vertical crossover operator reaches maximum number of iterations, if so, exporting wave at this time
The control parameter generator of wave energy for generating electricity system；Otherwise, return step step S3 is repeated.
5. the DC micro power grid system complementary based on the storage of light wave according to claim 1, which is characterized in that the solar energy
Electricity generation system is made of multiple photovoltaic battery panels, the output power of solar power system are as follows:
PPV=APVGηPVηinv
Wherein, PPVIndicate the output power of solar power system；APVThe area of solar irradiation radiation is received for photovoltaic panel；G
For light radiation numerical value；ηPVFor photovoltaic module energy conversion efficiency；ηinvFor BOOST converter transfer efficiency.
6. the DC micro power grid system complementary based on the storage of light wave according to claim 1, which is characterized in that the solar energy
Electricity generation system tracks solar energy maximum power generation state, solar power generation system using the MPPT controller based on disturbance observation method
Voltage, the current signal of system are input to MPPT controller, are converted to control parameter through MPPT controller, with solar power system
The end voltage of the connected DC bus of BOOST converter is transformed to another control parameter, two control parameters through constant-voltage controller
Converge access switching module, after modulating by pulse width modulator, accesses the BOOST converter of solar power system.
7. the DC micro power grid system complementary based on the storage of light wave according to claim 6, which is characterized in that the MPPT control
The disturbance observation method calculating process of device processed is as follows:
1) voltage and current signals that solar power system exports are sampled by voltage, current sensor respectively, is obtained
Obtain the initial value of solar power system output voltage and electric current；
2) output power of solar power system is calculated by the output voltage of solar power system and current value；
3) the adjacent output power change direction twice for judging solar power system, determines the application of next step control signal；
If 4) variable quantity of output power is greater than zero, the interference radiating way controlled originally is kept, obtains output power；Otherwise, change
2) interference radiating way for becoming control signal, returns to step.
8. the DC micro power grid system complementary based on the storage of light wave according to claim 1, which is characterized in that the energy storage system
The battery of system and the power output of super capacitor adjust variation according to the difference power between generator unit system and load cell,
Batteries to store energy capacity are as follows:
Eba=mbaCbaUba/106
Wherein, CbaFor the rated capacity of cell batteries；UbaFor voltage rating；mbaFor the cascade quantity of battery；EbaBattery
Stored energy capacitance；
Battery is with C10Time rate electric discharge, the rated output power P of battery groupbatAre as follows:
Pbat=mbaCbaUba/107
Wherein, PbatFor the rated output power of battery group, remaining meaning of parameters is consistent as mentioned before；
The super capacitor peak power output of the energy-storage system:
Pscmax=nUscmaxIscmax/106
Wherein, n indicates the cascade quantity of supercapacitor；UscmaxIndicate end voltage；IscmaxIndicate monomer supercapacitor most
The power of big operating current, the super capacitor charge and discharge is no more than its peak power output.
9. the DC micro power grid system complementary based on the storage of light wave according to claim 1, which is characterized in that ignore described straight
The power loss for flowing bus, the equilibrium relation that flow of power variation embodies between the generator unit system and the load cell
Are as follows:
Psource=Pinv+Pload
Wherein, PinvIt is expressed as the power loss of all converters of electricity generation system；PloadIndicate the sum of the load power of load cell；
PsourceIndicate the power that generator unit system issues:
Psource=Pg+Ppv+Psto
Wherein, PgIndicate the power that generator unit system Wave energy electricity generation system issues；PpvIndicate solar power system hair
Power out；PstoIt indicates the super capacitor of energy-storage system and the power that battery collective effect issues, indicates are as follows:
Psto=Pbat+Psc
Wherein, PbatIndicate the output power of battery in the energy-storage system；PscIndicate super capacitor in the energy-storage system
Output power.
10. the DC micro power grid system complementary based on the storage of light wave according to claim 1, which is characterized in that the energy storage
The power of system passes through between power controller coordinated balance Wave energy generating system, solar power system and load cell
Power obtains the power distribution of energy-storage system are as follows:
Psto_ref=Psource_ref-Pg_ref-Ppv_ref
Psc_ref=Psto_ref-Pbat_ref
Wherein, Psto_refIndicate that energy-storage system receives the power instruction of distribution, Psource_refIndicate what generator unit system issued
Power instruction, Pg_refIndicate the output power instruction of the Wave energy generating system of generator unit system, Ppv_refIndicate solar energy hair
The output power of electric system instructs；S is differentiation element；1/ (ts+1) indicates low-pass filtering link；T is time constant；
The power loss for ignoring converter is obtained according to the difference power between generator unit and load cell:
Psto=Pload-Pg-Ppv
Wherein, PgIndicate the power that generator unit system Wave energy electricity generation system issues；PpvIndicate solar power system hair
Power out；PstoIt indicates the super capacitor of energy-storage system and the sum of the power that battery collective effect issues, enables Δ P '=Pg-
Ppv-Pload, form the operation reserve of the direct-current grid:
1) whenWhen DC micro power grid system isolated operation, the Wave energy generating system of generator unit system with
Solar power system is controlled using MPPT, the energy-storage system charge operation of generator unit；
2) whenWhen DC micro power grid system isolated operation, the Wave energy generating system of generator unit system with
Solar power system is controlled using MPPT, the energy storage system discharges operation of generator unit system；
3) whenWhen DC micro power grid system is incorporated into the power networks, the Wave energy generating system and the sun of generator unit system
Energy electricity generation system is controlled using MPPT, the energy-storage system limit charge operation of generator unit.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110867897A (en) * | 2019-11-28 | 2020-03-06 | 云南电网有限责任公司电力科学研究院 | Coordination control strategy under multi-mode of multi-port energy router |
| CN111509774A (en) * | 2020-04-29 | 2020-08-07 | 国网山东省电力公司电力科学研究院 | Wave energy power generation system for meeting AC/DC independent power supply and operation control method thereof |
| CN112310955A (en) * | 2020-10-26 | 2021-02-02 | 东南大学 | Bipolar bus island micro-grid system |
| CN113472024A (en) * | 2020-03-30 | 2021-10-01 | 广州奕极机电科技有限公司 | Energy-saving management system of marine fixed information collection platform |
| CN113726266A (en) * | 2021-08-30 | 2021-11-30 | 舟山市海大科学技术研究院有限责任公司 | Ocean wave energy and solar energy combined power generation system |
| CN114597954A (en) * | 2022-05-10 | 2022-06-07 | 青岛科技大学 | Light storage grid-connected control system coping with photovoltaic power fluctuation |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102931653A (en) * | 2012-11-02 | 2013-02-13 | 浙江工业大学 | Comprehensive coordination control method of wind-solar direct current micro-grid |
-
2019
- 2019-05-28 CN CN201910453686.2A patent/CN110137993A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102931653A (en) * | 2012-11-02 | 2013-02-13 | 浙江工业大学 | Comprehensive coordination control method of wind-solar direct current micro-grid |
Non-Patent Citations (2)
| Title |
|---|
| 潘一夫: ""功率预测及混合储能在波浪发电系统中的应用研究"", 《中国优秀硕士学位论文全文数据库 基础科学辑》, no. 12, 15 January 2019 (2019-01-15), pages 1 - 57 * |
| 熊锋俊 等: ""基于纵横交叉算法的波浪发电装置最大功率跟踪控制"", 《电测与仪表》, vol. 58, no. 8, 25 April 2019 (2019-04-25), pages 124 - 130 * |
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| CN110867897B (en) * | 2019-11-28 | 2023-07-14 | 云南电网有限责任公司电力科学研究院 | Coordinated control strategy of multi-port energy router under multi-mode |
| CN113472024A (en) * | 2020-03-30 | 2021-10-01 | 广州奕极机电科技有限公司 | Energy-saving management system of marine fixed information collection platform |
| CN111509774A (en) * | 2020-04-29 | 2020-08-07 | 国网山东省电力公司电力科学研究院 | Wave energy power generation system for meeting AC/DC independent power supply and operation control method thereof |
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