CN107134804B - A kind of fuzzy control method of wind light mutual complementing power generation switchover operation - Google Patents
A kind of fuzzy control method of wind light mutual complementing power generation switchover operation Download PDFInfo
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- H02J3/383—
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- H02J3/386—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
- H02S10/10—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power including a supplementary source of electric power, e.g. hybrid diesel-PV energy systems
- H02S10/12—Hybrid wind-PV energy systems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- 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
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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- Supply And Distribution Of Alternating Current (AREA)
Abstract
The present invention provides a kind of fuzzy control method of wind light mutual complementing power generation switchover operation, include the following steps: S1, build wind light mutual complementing power generation experimental system, wherein, the experimental system includes one group of wind-driven generator, one group of solar energy power generating, an AC/DC rectifier, two DC/DC current transformers, a DC/AC inverter, two sets of battery group bands, two breakers and a DC load and an AC load；The wind-driven generator provides electric energy and uses for the AC load；The solar energy power generating provides electric energy and uses for the DC load；The wind-driven generator and solar energy power generating realizes interconnection power supply by two-way DC/AC current transformer in load end；S2 determines switching mode according to the operating condition of system, establishes the mathematical model of the wind light mutual complementing power generation experimental system；S3 is based on the mathematical model, establishes the design method of multimodal switchover fuzzy controller.
Description
Technical field
A kind of design of fuzzy control method of the present invention about wind light mutual complementing power generation switchover operation.
Background technique
With the aggravation of environmental pollution, people start to increase the construction of new energy micro power network.It is sent out with multiple new energy
Both with isolated operation or networking power generation can may be implemented in electric unit, can both form direct-current grid or form the micro- electricity of exchange
Net is incorporated to bulk power grid operation.Since the electric energy of sending and the electric energy of consumption have dynamic variation, so that being deposited inside micro-capacitance sensor
In multi-modal switching, and when considering to be incorporated into the power networks, the stabilization of single electricity generation system not can guarantee entire micro-capacitance sensor or micro- electricity
Net the stable operation of group.In addition, DC/DC current transformer is widely used in direct-current grid, it has the non-linear of inherence.These
Situation to become more difficult to the Generation Control of new energy.
Summary of the invention
In view of the foregoing, it is necessary to which a kind of fuzzy control method of wind light mutual complementing power generation switchover operation, Ke Yiyou are provided
Effect solves the above problems.
The present invention provides a kind of design of fuzzy control method of wind light mutual complementing power generation switchover operation, includes the following steps:
S1 builds wind light mutual complementing power generation experimental system, wherein the experimental system includes one group of wind-driven generator, one
Group solar energy power generating, an AC/DC rectifier, two DC/DC current transformers, a DC/AC inverter, two sets of batteries
Group two breakers of band and a DC load and an AC load；The wind-driven generator provides electric energy and supplies the friendship
Current load uses；The solar energy power generating provides electric energy and uses for the DC load；The wind-driven generator with too
Positive energy photovoltaic power generation realizes interconnection power supply by two-way DC/AC current transformer in load end；
S2 determines switching mode according to the operating condition of system, establishes the mathematics of the wind light mutual complementing power generation experimental system
Model；
S3 is based on the mathematical model, establishes the design method of multimodal switchover fuzzy controller.
Multimodal switchover fuzzy controller method provided by the invention can guarantee wind light generation network in multimodal switchover
Under safe and stable operation.
Detailed description of the invention
Fig. 1 is the implementation steps figure that wind and solar hybrid generating system multimodal switchover runs fuzzy control method.
Fig. 2 is the structural schematic diagram of wind and solar hybrid generating system multimodal switchover progress control method.
Fig. 3 is wind light mutual complementing power generation running experiment platform.
Specific embodiment
Fig. 1 is please referred to, the present invention implements a kind of wind and solar hybrid generating system multimodal switchover operation fuzzy control method, packet
Include following steps:
S1 builds wind light mutual complementing switchover operation and obscures operating system 100, wherein the wind-force builds wind referring to figure 2.
Light complemental power-generation experimental system includes one group of wind generator system (10), one group of solar photovoltaic generation system (20), one group of AC/
DC rectifier (11), two groups of DC/DC current transformers (12,22), one group of DC/AC inverter (13), two group storage batteries (14,24) band two
Group breaker (16,26), an AC load (15), a DC load (25) and a two-way DC/AC current transformer 30.
The wind generator system powers to AC load (15), and solar energy power generating powers to DC load (25), and light is mutually reissued
Electric system realizes networking by two-way DC/AC current transformer (30)；
S2 determines switching mode according to the operating condition of system, establishes the fuzzy of the wind light mutual complementing power generation experimental system
Mathematical model；
S3 establishes multimodal switchover fuzzy controller based on the multimodal switchover and its corresponding mathematical model
Design method.
In step s 2, according to system Mode-switch behavior that may be present, from isolated operation and two sides that are incorporated into the power networks
Surface analysis Mode-switch, and the system mathematic model of the Mode-switch is provided respectively.
(1) isolated operation
Indicate wind-power electricity generation and solar power system isolated operation.In this case, the system of each isolated operation
Mode also with following three kinds switchings.
Wind-power electricity generation isolated operation: battery is out of service, electric power storage tank discharge, battery charging；In these three switching feelings
Under shape, the mathematical model difference of system is as follows:
Wherein LqAnd LdIt is the induction reactance of d-q axis；iqAnd idIt is the electric current of d-q axis, iaIt is the electric current for flowing through load；ψmIt is to pass through
Electronics winding magnetic flux；RsIt is stator impedance；P is number of pole-pairs；ρ is air gap；V is wind speed；CpIt is power factor (PF)；A is windward
Region；ωeIt is angular rate；The inertia of J rotation system.
Solar energy power generating isolated operation: battery is out of service, electric power storage tank discharge, battery charging；At these three
Switch under situation, the mathematical model difference of system is as follows:
Wherein Vpv,iLAnd V0It is photovoltaic power generation voltage respectively, electric current and capacitor C on inductance0On voltage； R0,RL, and
RMIt is capacitor C respectively0, the impedance of inductance L and MOSFET pipe；VDIt is the forward voltage of power diode；ibIt is the load of measurement
Electric current；ibtIt is the electric current of battery.
(2) it is incorporated into the power networks
When considering wind-power electricity generation and solar grid-connected operation, there are following two to switch mode: the first is wind-force hair
Electrical power is flowed to the load of solar power system, and is load of the solar power generation power to wind power generation system for second
Flowing.
Whether work is participated in conjunction with the battery in system, then be incorporated into the power networks there are 18 kinds of switching mode, it is specific to describe
It is as follows:
Wind power generation flow of power is to the load of photovoltaic generating system, and the battery of wind power generation system is out of service,
The battery of solar photovoltaic generation system is out of service；Or
Wind power generation flow of power is to the load of photovoltaic generating system, and the battery of wind power generation system is out of service,
The electric power storage tank discharge of solar photovoltaic generation system is run；Or
Wind power generation flow of power is to the load of photovoltaic generating system, and the battery of wind power generation system is out of service,
The battery charge operation of solar photovoltaic generation system；Or
Load of the wind power generation flow of power to photovoltaic generating system, and the battery charge operation of wind power generation system,
The battery of solar photovoltaic generation system is out of service；Or
Load of the wind power generation flow of power to photovoltaic generating system, and the battery charge operation of wind power generation system,
The electric power storage tank discharge of solar photovoltaic generation system is run；Or
Load of the wind power generation flow of power to photovoltaic generating system, and the battery charge operation of wind power generation system,
The battery charge operation of solar photovoltaic generation system；Or
Wind power generation flow of power to photovoltaic generating system load, and wind power generation system electric power storage tank discharge operation,
The battery of solar photovoltaic generation system is out of service；Or
Wind power generation flow of power to photovoltaic generating system load, and wind power generation system electric power storage tank discharge operation,
The electric power storage tank discharge of solar photovoltaic generation system is run；Or
Wind power generation flow of power to photovoltaic generating system load, and wind power generation system electric power storage tank discharge operation,
The battery charge operation of solar photovoltaic generation system；Or
The flow of power of photovoltaic generating system is to the load of wind power generation system, and the battery of wind power generation system exits
Operation, the battery of solar photovoltaic generation system are out of service；Or
The flow of power of photovoltaic generating system is to the load of wind power generation system, and the battery of wind power generation system exits
Operation, the electric power storage tank discharge operation of solar photovoltaic generation system；Or
The flow of power of photovoltaic generating system is to the load of wind power generation system, and the battery of wind power generation system exits
Operation, the battery charge operation of solar photovoltaic generation system；Or
The flow of power of photovoltaic generating system to wind power generation system load, and wind power generation system battery charging
Operation, the battery of solar photovoltaic generation system are out of service；Or
The flow of power of photovoltaic generating system to wind power generation system load, and wind power generation system battery charging
Operation, the electric power storage tank discharge operation of solar photovoltaic generation system；Or
The flow of power of photovoltaic generating system to wind power generation system load, and wind power generation system battery charging
Operation, the battery charge operation of solar photovoltaic generation system；Or
Load of the flow of power of photovoltaic generating system to wind power generation system, and the electric power storage tank discharge of wind power generation system
Operation, the battery of solar photovoltaic generation system are out of service；Or
Load of the flow of power of photovoltaic generating system to wind power generation system, and the electric power storage tank discharge of wind power generation system
Operation, the electric power storage tank discharge operation of solar photovoltaic generation system；Or
Load of the flow of power of photovoltaic generating system to wind power generation system, and the electric power storage tank discharge of wind power generation system
Operation, the battery charge operation of solar photovoltaic generation system.
S3 establishes multimodal switchover fuzzy controller based on the multimodal switchover and its corresponding mathematical model
Design method.
In step s3, the parameter { i of wind-powered electricity generation electricity generation system is selectedd,iq,ψm,i,v,ibtAs fuzzy former piece variable after,
Select the parameter { V of solar photovoltaic generation systempv,VDipv,iL,ib,ibt, then the wind-power electricity generation and photovoltaic are sent out
Electric system can be by T-S fuzzy model below come approximate expression under decoupled mode:
Wind and solar hybrid generating system can pass through interconnection T-S fuzzy model approximation table below under the mode of being incorporated into the power networks
It reaches:
Wherein { 1,2 } i ∈, and
In step s3, the multimodal switchover fuzzy controller has following form,
Wherein Kij(μi) and Kij(μi) it is fuzzy state feedback controller gain, and a is 0 in isolated operation, simultaneously
It is 1 when net operation.
In step s3, the parameter of the multimodal switchover fuzzy controller is obtained by following method:
First by the multimodal switchover fuzzy controller (4) substitute into isolated operation system (7) and what is be incorporated into the power networks be
It unites after (8), obtains the Fuzzy control system of following closed loop respectively:
With
Since existing system is all based on computer control mostly, the controller of discrete can have more actuality.
Euler's discretization is carried out to the continuous system of (11) and (12) now, that is, is enabled
Wherein T is the sampling period.
Then consider following function,
WhereinIt is symmetric positive definite matrix, footmark i representative is subsystem number, and w represents switching signal.
Definition nowWe have:
Pass through Young ' s inequality, obtain:
WhereinIt is the symmetrical matrix of positive definite.
Define the symmetrical matrix of positive definiteAnd arbitrary matrixAnd with system
(11) with (12), we are respectively obtained:
Combinatorial formula (15) and (17), and formula below is obtained with after congruent transformation using cone complement fixed reason:
Wherein
Then, combinatorial formula (15) and (18), and formula below is obtained with after congruent transformation using cone complement fixed reason:
Wherein
Finally, the parameter of multimodal switchover fuzzy controller is by solving linear matrix inequality (19), (20) (22),
(23), it calculates as follows:
It can further comprise the simulation test platform for building DSPACE referring to figure 3. after step S3.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (6)
1. a kind of fuzzy control method of wind and solar hybrid generating system switchover operation, which comprises the steps of:
S1 builds wind light mutual complementing power generation experimental system, wherein the experimental system include one group of wind-driven generator, one group too
Positive energy photovoltaic power generation, an AC/DC rectifier, two DC/DC current transformers, a DC/AC inverter, two sets of battery group bands two
A breaker and a DC load and an AC load；The wind-driven generator provides electric energy and supplies the AC load
It uses；The solar energy power generating provides electric energy and uses for the DC load；The wind-driven generator and solar energy
Volt power generation realizes interconnection power supply by two-way DC/AC current transformer in load end；
S2 determines switching mode according to the operating condition of system, establishes the mathematical model of the wind light mutual complementing power generation experimental system；
, electric power storage tank discharge out of service according to the battery of wind-power electricity generation isolated operation, battery three kinds of switching mode of charging, build
Stand mathematical model such as formula (1)~(3) of the wind light mutual complementing power generation experimental system:
Wherein, LqAnd LdIt is the induction reactance of d-q axis；iqAnd idIt is the electric current of d-q axis, iaIt is the electric current for flowing through load；ψmIt is to pass through electricity
Sub- winding magnetic flux；RsIt is stator impedance；P is number of pole-pairs；ρ is air gap；V is wind speed；CpIt is power factor (PF)；A is area windward
Domain；ωeIt is angular rate；The inertia of J rotation system, V_dc indicate the output voltage of DC/DC converter；U indicates DC/DC transformation
The control signal of device duty ratio inputs；R indicates wind power generator rotor radius；
, electric power storage tank discharge out of service according to the battery of solar energy power generating isolated operation, battery, which charge three kinds, to be switched
Mode establishes mathematical model such as formula (4)~(6) of the wind light mutual complementing power generation experimental system:
Wherein, Vpv, iLAnd V0It is photovoltaic power generation voltage respectively, electric current and capacitor C on inductance0On voltage；R0, RLAnd RMPoint
It is not capacitor C0, the impedance of inductance L and MOSFET pipe；VDIt is the forward voltage of power diode；ibIt is the load current of measurement；
ibtIt is the electric current of battery, i_pv is photovoltaic power generation output electric current；
S3 is based on the mathematical model, establishes the design method of multimodal switchover fuzzy controller.
2. a kind of fuzzy control method of wind and solar hybrid generating system switchover operation as described in claim 1, which is characterized in that In
In step S2, according to wind-power electricity generation and solar grid-connected operation, and combine whether the battery in system participates in work, determination is cut
It is as follows to change the mold state:
Wind power generation flow of power is to the load of photovoltaic generating system, and the battery of wind power generation system is out of service, the sun
The battery of energy photovoltaic generating system is out of service；Or
Wind power generation flow of power is to the load of photovoltaic generating system, and the battery of wind power generation system is out of service, the sun
The electric power storage tank discharge operation of energy photovoltaic generating system；Or
Wind power generation flow of power is to the load of photovoltaic generating system, and the battery of wind power generation system is out of service, the sun
The battery charge operation of energy photovoltaic generating system；Or
Load of the wind power generation flow of power to photovoltaic generating system, and the battery charge operation of wind power generation system, the sun
The battery of energy photovoltaic generating system is out of service；Or
Load of the wind power generation flow of power to photovoltaic generating system, and the battery charge operation of wind power generation system, the sun
The electric power storage tank discharge operation of energy photovoltaic generating system；Or
Load of the wind power generation flow of power to photovoltaic generating system, and the battery charge operation of wind power generation system, the sun
The battery charge operation of energy photovoltaic generating system；Or
Wind power generation flow of power to photovoltaic generating system load, and wind power generation system electric power storage tank discharge operation, the sun
The battery of energy photovoltaic generating system is out of service；Or
Wind power generation flow of power to photovoltaic generating system load, and wind power generation system electric power storage tank discharge operation, the sun
The electric power storage tank discharge operation of energy photovoltaic generating system；Or
Wind power generation flow of power to photovoltaic generating system load, and wind power generation system electric power storage tank discharge operation, the sun
The battery charge operation of energy photovoltaic generating system；Or
The flow of power of photovoltaic generating system is to the load of wind power generation system, and the battery of wind power generation system exits fortune
Row, the battery of solar photovoltaic generation system are out of service；Or
The flow of power of photovoltaic generating system is to the load of wind power generation system, and the battery of wind power generation system exits fortune
Row, the electric power storage tank discharge operation of solar photovoltaic generation system；Or
The flow of power of photovoltaic generating system is to the load of wind power generation system, and the battery of wind power generation system exits fortune
Row, the battery charge operation of solar photovoltaic generation system；Or
The flow of power of photovoltaic generating system to wind power generation system load, and wind power generation system battery charge fortune
Row, the battery of solar photovoltaic generation system are out of service；Or
The flow of power of photovoltaic generating system to wind power generation system load, and wind power generation system battery charge fortune
Row, the electric power storage tank discharge operation of solar photovoltaic generation system；Or
The flow of power of photovoltaic generating system to wind power generation system load, and wind power generation system battery charge fortune
Row, the battery charge operation of solar photovoltaic generation system；Or
The flow of power of photovoltaic generating system to wind power generation system load, and wind power generation system electric power storage tank discharge fortune
Row, the battery of solar photovoltaic generation system are out of service；Or
The flow of power of photovoltaic generating system to wind power generation system load, and wind power generation system electric power storage tank discharge fortune
Row, the electric power storage tank discharge operation of solar photovoltaic generation system；Or
The flow of power of photovoltaic generating system to wind power generation system load, and wind power generation system electric power storage tank discharge fortune
Row, the battery charge operation of solar photovoltaic generation system.
3. a kind of fuzzy control method of wind and solar hybrid generating system switchover operation as described in claim 1, which is characterized in that
In step s3, the parameter { i of wind-powered electricity generation electricity generation system is selectedd, iq, ψm, i, v, ibtAs fuzzy former piece variable, select solar energy
Parameter { the V of photovoltaic generating systempv, VDipv, iL, ib, ibt, the wind-power electricity generation and solar photovoltaic generation system are transported in isolated island
It can be by T-S fuzzy model come approximate expression under line mode:
Wind and solar hybrid generating system can pass through interconnection T-S fuzzy model approximate expression below under the mode of being incorporated into the power networks:
Wherein { 1,2 } i ∈, and
4. a kind of fuzzy control method of wind and solar hybrid generating system switchover operation as claimed in claim 3, which is characterized in that
The multimodal switchover fuzzy controller has following form:
Wherein Kij(μi) and Kij(μi) it is fuzzy state feedback controller gain, and a is 0 in isolated operation, in grid-connected fortune
It is 1 when row.
5. a kind of fuzzy control method of wind and solar hybrid generating system switchover operation as claimed in claim 4, which is characterized in that
The parameter of the multimodal switchover fuzzy controller is obtained by following step:
S31 obtains the fuzzy control of following closed loop after the multimodal switchover fuzzy controller (10) is substituted into (7) (8) respectively
System:
With
S32 carries out Euler's discretization to the continuous system of (11) and (12), enables
Wherein, T is the sampling period；
S33 then considers following function:
WhereinIt is symmetric positive definite matrix, footmark i representative is subsystem number, and w represents switching signal, and defines
Δ V (x (t))=V (x (t+1))-V (x (t)), at this time:
S34 passes through Young ' s inequality, obtains:
WhereinIt is the symmetrical matrix of positive definite；
S35 defines the symmetrical matrix of positive definiteAnd arbitrary matrixAnd with basis
(11) it with (12), respectively obtains:
S36, combinatorial formula (15) and (17), and formula below is obtained with after congruent transformation using cone complement fixed reason:
Wherein
S37, then, combinatorial formula (15) and (18), and formula below is obtained with after congruent transformation using cone complement fixed reason:
Wherein
S38, finally, the parameter of multimodal switchover fuzzy controller is by solving linear matrix inequality (19), (20) (22),
(23), it obtains:
6. a kind of fuzzy control method of wind and solar hybrid generating system switchover operation as described in claim 1, which is characterized in that
It after step s 3, further comprise the simulation test platform for building DSPACE.
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