CN108923467A - A kind of industry zone type wind-light storage fills micro-grid system - Google Patents
A kind of industry zone type wind-light storage fills micro-grid system Download PDFInfo
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Classifications
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- H02J3/383—
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/01—Arrangements for reducing harmonics or ripples
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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
- 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
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/388—Islanding, i.e. disconnection of local power supply from the network
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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
-
- 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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- 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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
-
- 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
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/20—Climate change mitigation technologies for sector-wide applications using renewable energy
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The invention belongs to micro-capacitance sensor technical fields, it discloses a kind of industry zone type wind-light storages to fill micro-grid system, including main electric network source, micro-capacitance sensor backbone, wind generator system, photovoltaic generating system, energy-storage system, load system, the main electric network source is electrically connected with micro-capacitance sensor backbone by grid-connected switch, and the wind generator system, photovoltaic generating system, energy-storage system, load system are connected in parallel to micro-capacitance sensor backbone；The energy-storage system includes lead-acid battery energy storage subsystem in parallel, lithium battery energy storage battery subsystem, super capacitor energy-storage subsystem.The purpose of the present invention is to provide a kind of industry zone type wind-light storages to fill micro-grid system, the system can effectively improve energy storage efficiency using the lead-acid battery energy storage subsystem, lithium battery energy storage battery subsystem, super capacitor energy-storage subsystem of connection, reduce energy storage cost, and cooperates with the electricity generation system of diversified forms, can effectively improve the comprehensive utilization situation of the natural energy resources of garden.
Description
Technical field
The present invention relates to micro-capacitance sensor technical field, especially a kind of industry zone type wind-light storage fills micro-grid system.
Background technique
Micro-capacitance sensor be now study a more electric system subdivision field.Micro-capacitance sensor is also translated into microgrid,
Refer to small-sized made of being collected as distributed generation resource, energy storage device, energy conversion device, associated loadings and monitoring, protective device
Be transported to electric system, being one can be realized self-contr ol, protection and the autonomous system of management, it as complete electric system,
By the control and management of itself for being able to achieve power-balance control, running Optimization, default detection and protection, power quality
The function of administer etc..It can both be incorporated into the power networks with external electrical network, can also be with isolated operation.The it is proposed of micro-capacitance sensor is intended to reality
Flexible, the efficient application of existing distributed generation resource, solve the problems, such as that substantial amounts, various informative distributed generation resource are grid-connected.
The characteristic of micro-capacitance sensor meets the growth requirement of Contemporary China power industry very much, is to solve China electric power industry development
The high-quality selection of problem and China further increase clean energy resource permeability and utilization efficiency, improve energy resource structure transition
Important carrier.As the key node of energy internet concept, it is a kind of tool ' decontroled with sale of electricity side ' during new round electricity changes
Body form.
Micro-capacitance sensor has become the most advantageous supplement alleviated new energy consumption problem and overcome bulk power grid self-defect.China
Micro-capacitance sensor is in the starting stage, mainly based on pilot project, has carried out a part of micro-capacitance sensor demonstration project construction and correlation
Key technology research, research are concentrated mainly on remote districts, grid type micro-capacitance sensor and non-Electric region, island-shaped independence micro-capacitance sensor.
It is directed to the micro-capacitance sensor construction of industry park, is in the starting stage now.
CN201310249902.4 discloses a kind of industrial park wind-light storage micro-grid system, and technical characteristics are：Packet
Include wind-solar generation device, electricity generation system detection and control terminal, energy-storage units, inverter and remote control main website, wind-solar generation device
Input terminal be connected with wind energy plant and solar energy equipment, wind-solar generation device and electricity generation system measure and control device, energy-storage units
It is connected with inverter, the output end of wind-solar generation device output end and inverter is linked into power grid or is connected to negative
Load is powered for it, and electricity generation system detection and control terminal is connected with inverter, electricity generation system measure and control device and remote control main website phase
Connection.The functions such as wind-power electricity generation, photovoltaic power generation, energy storage, off-network inversion, grid-connected feed effectively can be integrated in one by the program
It rises, realizes multifunctional electric energy mapping function；Have the characteristics that energy conservation and environmental protection, at low cost, high-efficient and performance are stablized.
CN201210162634.8 disclose a kind of garden energy network energy Optimal Management System based on micro-capacitance sensor and its
Implementation method.The energy-optimised management system realized by garden energy scheduling and microgrid energy management, microgrid energy pipe
Reason system is three-decker：Microgrid energy dispatch layer, micro-capacitance sensor central control level, micro battery, energy storage and load control layer on the spot.
The constraint condition of energy-optimised management method is guaranteed that the power output of each micro battery or energy storage is by micro- electricity by micro-capacitance sensor central control level
Micro battery in net central controller is determined with energy storage coordination control strategy；Objective function includes three different grades of specific items
Offer of tender manifold calculates the target function value under various states by the multi-objective optimization algorithm based on weight, and the program overcomes
Distributed generation resource randomness and intermittent defect, solve in garden energy net between multiple micro-capacitance sensors and in micro-capacitance sensor it is more
Complementarity Problem between kind micro battery, the optimum use and system energy efficiency for realizing clean energy resource maximize.
Two above-mentioned technical solutions have important directive significance in the Construction Party face of micro-capacitance sensor.
But in existing micro-capacitance sensor process of construction, one of existing defect is, using generating electricity by way of merging two or more grid systems or isolated network
In power supply process, single power generation, energy-storage system are mostly used greatly, it is low efficiency, at high cost.
Summary of the invention
The present invention is intended to provide a kind of industry zone type wind-light storage fills micro-grid system, which is stored up using the lead-acid battery of connection
Can subsystem, lithium battery energy storage battery subsystem, super capacitor energy-storage subsystem can effectively improve energy storage efficiency, reduce energy storage at
This, and cooperate with the electricity generation system of diversified forms, it can effectively improve the comprehensive utilization situation of the natural energy resources of garden.
Its concrete scheme is：A kind of industry zone type wind-light storage fills micro-grid system, including main electric network source, micro-capacitance sensor trunk
Line, wind generator system, photovoltaic generating system, energy-storage system, load system, the main electric network source and micro-capacitance sensor backbone
It is electrically connected by grid-connected switch, the wind generator system, photovoltaic generating system, energy-storage system, load system are connected in parallel to micro-
Power grid backbone；It is characterized in that, the energy-storage system includes lead-acid battery energy storage subsystem in parallel, lithium battery energy storage battery
System, super capacitor energy-storage subsystem.
It is filled in micro-grid system in above-mentioned industry zone type wind-light storage, further includes Active Power Filter-APF APF；Described has
Active power filter APF and energy-storage system are connected in parallel to micro-capacitance sensor backbone.
It is filled in micro-grid system in above-mentioned industry zone type wind-light storage, the wind generator system includes level in parallel
Axis wind-power electricity generation subsystem, vertical axis wind power generation subsystem.
It is filled in micro-grid system in above-mentioned industry zone type wind-light storage, the photovoltaic generating system includes monocrystalline in parallel
Silicon photovoltaic power generation subsystem, polysilicon photovoltaic power generation subsystem, film photovoltaic power generation sub-system, glass curtain wall photovoltaic power generation subsystem
System.
It is filled in micro-grid system in above-mentioned industry zone type wind-light storage, the load system includes important equipment in parallel
It loads subsystem, electricity consumption peak load subsystem, normal lighting and loads subsystem.
It is filled in micro-grid system in above-mentioned industry zone type wind-light storage, further includes the charging pile in parallel with energy-storage system, institute
The charging pile stated includes Electric Vehicle's Alternating trickle charge stake in parallel, electric car direct current charge stake.
It is filled in micro-grid system in above-mentioned industry zone type wind-light storage, the electric car direct current charge stake, wind-force hair
Unsteady flow inverter is equipped between electric system, photovoltaic generating system, energy-storage system and micro-capacitance sensor backbone.
It is filled in micro-grid system in above-mentioned industry zone type wind-light storage, further includes microgrid energy management system EMS；It is described
Microgrid energy management system EMS and the unsteady flow inverter communicate to connect.
It is filled in micro-grid system in above-mentioned industry zone type wind-light storage, further includes micro-grid system controller MGCC and micro- electricity
Net operational mode controller MSC；The wind generator system, photovoltaic generating system, energy-storage system are matched respectively is arranged with micro- electricity
Source controller MC；The load system, Active Power Filter-APF APF, charging pile, which are distinguished, mating is equipped with load governor LC；
The grid-connected switch, which is matched, is arranged with grid-connected switch controller SC；
The microgrid energy management system EMS and micro-grid system controller MGCC and micro-capacitance sensor operational mode control
Device MSC communication connection；
Micro source controller MC, the load governor LC is communicated to connect with microgrid energy management system EMS respectively；
Micro source controller MC, the load governor LC is communicated to connect with micro-grid system controller MGCC respectively；
The grid-connected switch controller SC and microgrid energy management system EMS, micro-grid system controller MGCC is logical
Letter connection.
Filled in micro-grid system in above-mentioned industry zone type wind-light storage, the wind generator system, photovoltaic generating system,
Control switch is respectively equipped between energy-storage system, load system, Active Power Filter-APF APF, charging pile and micro-capacitance sensor backbone.
The beneficial effects of the present invention are：
(1) in energy-storage system using lead-acid battery energy storage, three kinds of energy storage modes of lithium battery energy storage battery and super capacitor energy-storage into
Row mixed configuration energy storage, advantage have：Battery energy storage energy density is high, but its power density is lower, can meet wind-powered electricity generation, photovoltaic power generation
Requirement of the system to energy density, but be difficult to meet system dynamic response performance requirement；Super capacitor energy-storage power density is high, but
Its energy density is lower；Therefore using super capacitor and the mixed energy storage system of battery composition, two kinds of energy storage modes are incorporated
Advantage, the shortcomings that compensating for two kinds of energy storage technologies, the perfect performance of energy-storage system meet micro-grid system performance requirement；
The two is used in mixed way, it is possible to reduce battery discharge cycle-index reduces the loss to battery, increases battery；Plumbic acid
The low cheap but cycle-index of battery price is low, and the high cheap but cycle-index of lithium battery price is long, and progress price is low, service life is short
And price is high, the reasonable mixed configuration of energy storage device with long service life, keeps entire energy-storage system cost performance optimal, function mode is most
Flexibly.
(2) preferably, microgrid electric energy matter is improved by the way of active filter APF and energy storage device combined operating
Amount, wherein active filter connects in distributed generation resource inverter outlet side, and current detecting uses ip-iq method, and tracing control is adopted
With the method for track with zero error and space vector pulse width modulation, harmonic current is filtered out, improves power quality.
(3) preferably, horizontal shaft wind-power generating system and vertical axis wind power generation system two are used in wind generator system
The different wind power technology of kind, to solve the problems, such as that wind resource is complicated in Industrial Area, makes wind-power electricity generation utilization rate largest optimization；Light
Using the photovoltaic hair of the diversified forms such as building roof, ground, building curtain wall and electric automobile charging pile ceiling in photovoltaic generating system
Electricity；It is wherein corresponding to use the different photovoltaic technologies such as monocrystalline silicon, polysilicon, photovoltaic curtain wall and film；The synthesis of multiple technologies
Using making photovoltaic utilization rate largest optimization.
It is configured with wind generator system, photovoltaic generating system and energy-storage system, realizes that the energy is provided multiple forms of energy to complement each other, has broken industry
Single energy supply mode in area is realized and is complementary to one another and cascade utilization between various energy resources, provides for user in Industrial Area
Comprehensive energy service alleviates energy supply and demand contradiction, obtains preferable environmental benefit to promote the comprehensive utilization ratio of comprehensive energy
(4) preferably, two kinds of charging techniques of trickle charge and fast charge are used in charging pile system, and use Bidirectional variable-flow V2G
Technology makes electric car and micro-capacitance sensor carry out energy interaction, and when micro-grid load is excessively high, starting electric car energy storage source is to micro-
Power grid feed；And when micro-grid load is low, for storing the generated energy of micro-capacitance sensor surplus, avoid wasting.Using electronic
Energy buffer of the energy storage source of automobile as micro-capacitance sensor.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment 1；
Fig. 2 is the control schematic diagram of embodiment 1；
Fig. 3 is the schematic diagram of the micro-capacitance sensor control system of embodiment 1；
The operational mode that Fig. 4 is the micro-grid system controller MGCC of embodiment 1 identifies block diagram；
Fig. 5, which is that the MGCC of embodiment 1 is grid-connected, turns isolated power grid mode block diagram；
Fig. 6, which is that the MSC of embodiment 1 is grid-connected, turns isolated power grid mode block diagram；
Fig. 7 is that the isolated network of embodiment 1 turns Grid-connected Control Strategy block diagram；
Fig. 8 is the APF schematic diagram of embodiment 1；
Fig. 9 is the ip-iq electric current testing figure of embodiment 1；
Figure 10 is the track with zero error schematic diagram of embodiment 1；
Figure 11 is the space vector pulse width modulation SVPWM schematic diagram of embodiment 1.
Specific embodiment
With reference to embodiment, technical solution of the present invention is described in further detail, but do not constituted pair
Any restrictions of the invention.
In order to which more clearly the present invention will be described, embodiment is listed below to illustrate superiority of the invention.
Embodiment 1
As depicted in figs. 1 and 2, a kind of industry zone type wind-light storage fills micro-grid system, including main electric network source 1, micro-capacitance sensor
Backbone 2, wind generator system, photovoltaic generating system, energy-storage system, load system, the main electric network source 1 and micro-capacitance sensor
Backbone 2 is electrically connected by grid-connected switch 3, the wind generator system, photovoltaic generating system, energy-storage system, load system
It is connected in parallel to micro-capacitance sensor backbone 2；
The energy-storage system includes lead-acid battery energy storage subsystem 4 in parallel, lithium battery energy storage battery subsystem 5, super electricity
Hold energy storage subsystem 6.
It is mixed in energy-storage system using three kinds of lead-acid battery energy storage, lithium battery energy storage battery and super capacitor energy-storage energy storage modes
Configuration energy storage is closed, advantage has：Battery energy storage energy density is high, but its power density is lower, can meet wind-powered electricity generation, photovoltaic generating system
Requirement to energy density, but be difficult to meet system dynamic response performance requirement；Super capacitor energy-storage power density is high, but its energy
Metric density is lower；Therefore the advantages of using the mixed energy storage system of super capacitor and battery composition, incorporating two kinds of energy storage modes,
The shortcomings that compensating for two kinds of energy storage technologies, the perfect performance of energy-storage system, meets micro-grid system performance requirement；The two is mixed
It closes and uses, it is possible to reduce battery discharge cycle-index reduces the loss to battery, increases battery；Lead-acid battery valence
The low cheap but cycle-index of lattice is low, and the high cheap but cycle-index of lithium battery price is long, and progress price is low, service life is short and price
The reasonable mixed configuration of energy storage device high, with long service life, keeps entire energy-storage system cost performance optimal, function mode is most flexible.
It further include Active Power Filter-APF APF7 in the further preferred scheme of the present embodiment；The active electric power
Filter APF7 and energy-storage system are connected in parallel to micro-capacitance sensor backbone 2.
In actual moving process, it is divided into grid connection state and isolated network state；
Under grid connection state, power supply, energy storage are carried out by main electric network source 1, wind generator system, photovoltaic generating system
System can carry out charge and discharge, charge from micro-capacitance sensor backbone 2 or power to micro-capacitance sensor backbone 2；
Grid-connected or isolated network is controlled by grid-connected switch 3.
In the present embodiment, microgrid is improved by the way of Active Power Filter-APF APF7 and energy storage device combined operating
Power quality, wherein active filter connects in distributed generation resource inverter outlet side, and current detecting uses ip-iq method, tracking
The method that control uses track with zero error and space vector pulse width modulation filters out harmonic current, improves power quality.
For specifically, the present invention uses parallel connection type structure, and parallel connection type active electric filter APF7 switching is flexible, respectively
Kind protects also correspondingly simple, technical comparative maturity.The working principle of parallel connection type active electric filter APF7 is：Pass through generation
With in detection electric current harmonic wave and reactive component is equal in magnitude, 180 ° of phase mutual deviation of compensation electric current injects power grid, keep net side electric
Stream becomes with network voltage with the sine wave of phase, to achieve the purpose that purify power grid.Therefore parallel connection type active electric filter
The key of APF7 technology is to compensate the detection of electric current and compensation two links of current follow-up control.Its working principle diagram such as Fig. 8：
Shown in APF schematic diagram；
Compared with traditional harmonic detecting technique, the harmonic detecting technique that this invention uses is ip-iq electric current testing.
This harmonic detecting technique is based on Theory of Instantaneous Reactive Power of Three-Phase Circuits, since network voltage contains distortion and asymmetrical component
When, sinusoidal signal phase deviation caused by network voltage is asymmetric in ip-iq electric current testing is to asymmetrical component to harmonic wave
Compensation does not influence.Concrete principle such as Fig. 9：Shown in ip-iq electric current testing figure：
Current harmonic detection system obtains and power grid a phase voltage first with PLL (phaselockedloop) phase-locked loop
With the sinusoidal signal sin ω t and corresponding cosine signal cos ω t of frequency same-phase, by matrix by electric current from abc static coordinate
System transforms to dq0 rotating coordinate system, and IpIq obtains the corresponding ipiq of fundamental wave after low-pass filter LPF, final by inverse transformation
Fundamental current ifabc is obtained, harmonic current value is obtained by the electric current containing harmonic wave with fundamental current difference.
APF after obtaining instruction current signal, the practical compensation electric current of generation should be able to real-time tracking instruction current variation,
This requires the control methods of APF good real-time.Compared with traditional control mode, this invention uses dead beat control
The method that system is combined with space vector pulse width modulation SVPWM (spacevectorpulsewidthmodulation).
Track with zero error is a kind of distinctive control mode of digital display circuit, is easy digitlization, and performance has very compared with conventional method
Big raising, effect be on each sampled point the output of system instructed with it is completely the same, without any delayed phase
And amplitude deviation.It is because an output quantity clapped can be always expressed as currently under system that digital display circuit, which is able to achieve track with zero error,
The input control quantity at moment and the linear combination of system state variables.Citing, a system are described as with equation：
In formula：X is quantity of state, and u is input quantity, and y is output quantity；
The output quantity of next bat can be expressed as：
Y (k+1)=Cx (k+1)=CAx (k)+CBu (k)
The instruction for enabling next bat is：
R (k+1)=CAx (k)+CBu (k)
To：
Indicated above, the output of system is all equal with instruction in each bat, that is, achievees the effect that dead beat.Track with zero error
This link, which is functionally realized, is converted to tracing control to voltage harmonic the tracing control to current harmonics, to be
The Voltage Reference amount that subsequent SVPWM provides for tracking, functional block diagram such as Figure 10：Shown in track with zero error schematic diagram；
For SVPWM compared with traditional modulation system, current distortion rate is small, and DC voltage utilization rate is high, and compensation effect is good, especially
It is to be very suitable to digitlization and real-time control, concrete model figure such as Figure 11：Space vector pulse width modulation SVPWM principle
Shown in figure；
Subsystems, which act on, in figure is successively：" N1 " judges Voltage Reference vector in hexagon (for three-phase three-wire system
Route) which sector；" XYZ " selected switch vector；" Subsystem " calculates the action time of each switch vector；
The sequence of operation of " Subsystem1 " selected switch vector；" producePWM " issues trigger pulse and uses Active Power Filter-APF
The mode of APF7 (ActivePowerFilter) guarantees that the power quality of micro-capacitance sensor, current detecting use ip-iq method, with
The method that track control uses track with zero error and space vector pulse width modulation filters out harmonic current to micro-capacitance sensor, reduces system
System network loss improves power quality, more excellent than traditional approach and effective.
As the preferred of the present embodiment, the wind generator system include horizontal axis wind generating subsystem 8 in parallel,
Vertical axis wind power generation subsystem 9.
9 two kinds of horizontal axis wind generating subsystem 8, vertical axis wind power generation subsystem differences are used in wind generator system
Wind power technology make wind-power electricity generation utilization rate largest optimization to solve the problems, such as in Industrial Area that wind resource is complicated；
As the preferred of the present embodiment, the photovoltaic generating system includes monocrystalline silicon photovoltaic power generation subsystem in parallel
10, polysilicon photovoltaic power generation subsystem 11, film photovoltaic power generation sub-system 12, glass curtain wall photovoltaic power generation subsystem 13.
Using a variety of shapes such as building roof, ground, building curtain wall and electric automobile charging pile ceilings in photovoltaic generating system
The photovoltaic power generation of formula；It is wherein corresponding to use the different photovoltaic technologies such as monocrystalline silicon, polysilicon, photovoltaic curtain wall and film；It is a variety of
The integrated application of technology makes photovoltaic utilization rate largest optimization.
As the preferred of the present embodiment, the load system includes important equipment load subsystem 14, electricity consumption in parallel
Peak load subsystem 15, normal lighting load subsystem 16.
It further include the charging pile in parallel with energy-storage system as the preferred of the present embodiment, the charging pile includes parallel connection
Electric Vehicle's Alternating trickle charge stake 17, electric car direct current charge stake 18.Exchanging trickle charge and direct current are used in charging pile system
Two kinds of charging techniques of fast charge, and Bidirectional variable-flow V2G technology is used, so that electric car and micro-capacitance sensor is carried out energy interaction, when micro- electricity
When net load is excessively high, fed from electric car energy storage source to micro-capacitance sensor；And when micro-grid load is low, for storing micro-capacitance sensor mistake
Surplus generated energy avoids wasting.Using the energy storage source of electric car as the energy buffer of micro-capacitance sensor.
It is configured with wind generator system, photovoltaic generating system, energy-storage system and charging pile V2G system in Industrial Area, realizes
The energy is provided multiple forms of energy to complement each other, and has broken energy supply mode single in Industrial Area, is realized and is complementary to one another between various energy resources and step
It utilizes, provides comprehensive energy service for user in Industrial Area, to promote the comprehensive utilization ratio of comprehensive energy, alleviate energy supply and demand
Contradiction obtains preferable environmental benefit.
As the preferred of the present embodiment, the electric car direct current charge stake 18, wind generator system, photovoltaic power generation system
Bidirectional converter 19 is equipped between system, energy-storage system and micro-capacitance sensor backbone 2.The wind generator system, photovoltaic power generation
Control is respectively equipped between system, energy-storage system, load system, Active Power Filter-APF APF7, charging pile and micro-capacitance sensor backbone 2
Make switch 20.
It in the present embodiment, further include microgrid energy management system EMS21；The microgrid energy management system
EMS21 and the bidirectional converter 19 communicate to connect；In addition, further including that micro-grid system controller MGCC22 and micro-capacitance sensor are transported
Row mode controller MSC23；The wind generator system, photovoltaic generating system, energy-storage system are matched respectively is arranged with micro battery
Controller MC24；The load system, Active Power Filter-APF APF7, charging pile, which are distinguished, mating is equipped with load governor
LC25；The grid-connected switch 3, which is matched, is arranged with grid-connected switch controller SC26；
The microgrid energy management system EMS21 and micro-grid system controller MGCC22 and micro-capacitance sensor operational mode
Controller MSC23 communication connection；
Micro source controller MC24, the load governor LC25 is logical with microgrid energy management system EMS21 respectively
Letter connection；
Micro source controller MC24, the load governor LC25 is communicated with micro-grid system controller MGCC22 respectively
Connection；
The grid-connected switch controller SC26 and microgrid energy management system EMS21, micro-grid system controller
MGCC22 communication connection.
Its specific control process is：
The architecture of " wind-light storage fills " micro-capacitance sensor of the invention uses the three-decker of comparative maturity in the world：Micro-capacitance sensor system
System monitoring and optimal control layer, micro-capacitance sensor central control level, distributed generation resource and load control layer on the spot.The core of this micro-capacitance sensor
It is " autonomous independent, to coordinate mutually Ji ", autonomy independently refers to that micro-capacitance sensor has the ability for blocking electric network fault to influence, and makes micro- electricity
The isolated power grid of net, which has, not to be lost load or loses load less；Coordinate mutually Ji and refers to that micro-capacitance sensor and major network can establish mutual branch
The relationship helped." wind-light storage fills " micro-capacitance sensor has grid-connected, two kinds of operational modes of isolated network.It is grid-connected with main power grid when micro-capacitance sensor normal condition
Operation, the energy supports each other, realizes the two-way exchange of energy.When micro-capacitance sensor internal power source abundance or external electrical network fault condition,
Switch to isolated power grid mode.It is not connected with external electrical network when micro-capacitance sensor isolated power grid, utilizes the distributed energy of micro-capacitance sensor itself
Source meets the needs of microgrid internal loading.By advanced control strategy and control means, guarantee the energy highly reliable in micro-capacitance sensor
Supply.Micro-capacitance sensor can realize the seamless switching of two kinds of operational modes；Micro-capacitance sensor control system is mainly as shown in Figure 3；
" wind-light storage fills " micro-capacitance sensor provides voltage and frequency reference, photovoltaic, wind-powered electricity generation hair under the mode of being incorporated into the power networks, by power grid
Electric system uses maximum power tracing control model, and all micro batteries run on invariable power (PQ) control model；In isolated power grid
Under mode, micro-capacitance sensor is switched to master-slave control mode, and wherein lithium battery energy storage battery system is converted to constant pressure/constant frequency (VF) control mould
Formula provides voltage and frequency reference for micro-grid system, other micro battery control models remain unchanged；
The control of " wind-light storage fills " micro-grid system uses three layers of control system based on IEC61850 standard, effectively reduces control
Protocol conversion amount between preparative layer, system communication is high-efficient, increases the real-time and stability of system running policy.Referring to attached drawing 7：
Industry zone type " wind-light storage fills " micro-grid system control schematic diagram.The major function of each control layer is as follows：
First layer is distributed generation resource and load control layer on the spot：The main control on the spot for completing micro-capacitance sensor component units.
By micro source controller MC24, load governor LC25 realize to wind power system, photovoltaic system, energy-storage system, charging pile and
The integration monitoring and control of load；Grid-connected switch controller SC26 realizes the observing and controlling to grid-connected switch 3PCC, and and micro-capacitance sensor
Operational mode controller MSC23 completes the quick timing control during micro-capacitance sensor operational mode；
The second layer is micro-capacitance sensor central control level：Main target is to reduce the fluctuation of renewable energy and load in micro-capacitance sensor
Influence to major network makes micro-capacitance sensor access major network as a close friend, controllable load.Main micro-capacitance sensor operational mode of completing is cut
It changes and stability contorting.Micro-grid system controller MGCC22 and micro-capacitance sensor operational mode controller MSC23 complete micro-capacitance sensor jointly
Operational mode handoff functionality；Micro-grid system controller MGCC22 passes through the control model and control parameter progress to each micro battery
It setting and adjusts, micro-grid system stable operation when power and utility power quality control and off-network when realizing grid-connected.Micro-capacitance sensor
The control of operational mode seamless switching also realizes that the part should have electric network fault detection, micro-capacitance sensor and electricity in second layer control
Net such as synchronizes at the functions, and carries out coordinated control to micro-grid connection static switch and main power source control mode switch.
Third layer is micro-grid system monitoring and optimal control layer：The main information integration and economic optimization for completing micro-capacitance sensor
Operation.Microgrid energy management system EMS21 is integrated in unified data acquisition and monitoring platform, realizes real time information prison
It surveys, historical information storage, system control, economic optimization is run and the functions such as report form statistics.Micro-grid connection run when, determine with
Interconnection output power reference value (controlling target reference as the micro-capacitance sensor second layer) between bulk power grid；In the isolated fortune of micro-capacitance sensor
When row, the letter such as each distributed power source output power reference value or sagging curve stable state reference point and the setting of allocation proportion coefficient is adjusted
Breath realizes the functions such as micro-capacitance sensor economical operation.
" wind-light storage fills " micro-grid connection turns isolated network control strategy：Micro-capacitance sensor usually has two by the grid-connected isolated power grid mode that turns
Kind situation.(1) new energy and energy storage abundance or external electrical network maintenance have a power failure inside micro-capacitance sensor, actively trigger off-network switching, this
Situation is of less demanding to switching time, but requires handover success rate height.It is transported by micro-grid system controller MGCC22 and micro-capacitance sensor
Row mode controller MSC23 is completed jointly.(2) the unplanned power failure of external electrical network is broken down, and the switching of passive triggering off-network is this
Situation requires the timely time limit rapidly short by micro-capacitance sensor passive triggering, to switching, since horizon problem is only by micro-capacitance sensor operational mode
Controller MSC23 complete independently.
" wind-light storage fills " micro-capacitance sensor MGCC control strategy：When micro-grid system controller MGCC22 receives micro-capacitance sensor operation mould
After the active off-network order that formula controller MSC23 is issued, the identification of progress operational mode and verification first, such as with Fig. 4 operational mode
It identifies shown in block diagram；
Pass through the synthesis of the information such as main PCS, the operating status of grid-connected switch 3 and system mode in energy-storage system in micro-capacitance sensor
Analysis, determines that micro-grid system is in grid connection state.And there is at least one slave PCS that can undertake pattern switching task, with
Afterwards by adjusting in energy-storage system from the power of PCS, the adjusting modes such as distributed generation resource and the secondary load of switching, make grid entry point function
Rate is identical as main PCS power direction, and the absolute value of its algebraical sum is less than pre-set value SSET1, consider anti-load impact ability and
It needs to retain the factors such as part stand-by heat, S of the present invention in isolated power gridSET1Take 1/2 main PCS capacity.After condition meets, sent out to MSC
It is sent from net mode handover command.MGCC is grid-connected to turn isolated power grid mode such as Fig. 5：MGCC is grid-connected to be turned shown in isolated network control block diagram；
" wind-light storage fills " micro-capacitance sensor MSC control strategy：MSC is embedded real time system, implementation pattern switching it is accurate when
Sequence control initially enters pattern-recognition after receiving actively or passively off-network order, and confirmation micro-capacitance sensor is in grid connection state, so
The power-balance situation of systematic memory before being occurred afterwards according to order, by examining grid entry point view to carry out system power in exchange power
Self checking.Such as load surplus, the modes such as secondary load are contributed and cut by preferentially stopping charged state PCS, increasing distributed generation resource
It is adjusted；If power generation is superfluous, it is adjusted by preferentially parking electricity condition PCS, reducing the modes such as distributed generation resource power output；
For the rapidity for guaranteeing handoff procedure, only carries out a power-balance and adjust, make grid entry point power calculation value plus main PCS power
The absolute value of algebraical sum is less than pre-set value SSET2, S of the present inventionSET2Take 2/3 main PCS capacity.After condition meets, sent out to main PCS
PQ is sent to turn VF mode handover command, to grid entry point delaying time of controller T1(present invention sets T1=10ms) send switch separating brake order.It is complete
Off-grid switching is arrived at grid-connected.MSC is grid-connected to turn isolated power grid mode such as Fig. 6：MSC is grid-connected to be turned shown in isolated network control block diagram；
" wind-light storage fills " micro-capacitance sensor isolated network turns Grid-connected Control Strategy：Micro-capacitance sensor in isolated power grid, works as micro-grid system
After interior energy deficiency or bulk power grid restore electricity, starting isolated network is turned into Grid-connected Control Strategy.And network process is by MGCC, MSC and PCS
It is common to complete.After MGCC receives the simultaneous interconnecting order of EMS sending, the identification of progress operational mode and verification first confirms micro-
Power grid is in isolated network state, and presets the power under PQ operational mode according to the current active and reactive power of main PCS and initially give
Value；Then same period regulating command is sent to main PCS, and sends inspection simultaneous interconnecting order to grid entry point PCC, main PCS is connected to order
Afterwards, the voltage magnitude and frequency for carrying out micro-capacitance sensor side are adjusted, and wherein voltage, frequency amplitude reference value are system side voltage, frequency
Amplitude, and meet definite value, definite value of the present invention：Same period side angle difference definite value Δ θSET=5 °；Frequency difference definite value Δ FSET=0.1HZ；Frequency difference
Definite value Δ USET=2V, after meeting inspection same period condition, grid-connected switch 3PCC is successfully instructed to the main PCS hair same period and is carried out grid-connected behaviour
Make, main PCS delay T2(present invention sets the present invention and sets T2=10ms) after PQ operational mode, micro-capacitance sensor be switched to by VF operational mode
Simultaneous interconnecting operates successfully.Isolated network turns Grid-connected Control Strategy such as Fig. 7：Isolated network turns shown in cutting-in control block diagram.
The present embodiment has the beneficial effect that：1, photovoltaic power generation is installed using building roof, metope and vacant lot in Industrial Area
System and wind generator system, micro-capacitance sensor energy management system intelligent control generation of electricity by new energy, energy-storage system charge and discharge guarantee to produce
Industry area internal loading and new energy electric motor vehicle can use green energy resource on daytime or night first.In generation of electricity by new energy deficiency
By electricity price between peak and valley, peak load shifting is realized, reduce electric cost expenditure.
2, industry zone type " wind-light storage fills " micro-capacitance sensor mode to wind, the various energy resources such as light, fill, store up and carried out flexibly and effectively
Combined application, so that the mode can flexibly provide corresponding solution for various complicated applications environment, this is also provided for market
A kind of new new energy application development mode, simple extensive new energy power station development thinking will be pass by by, which helping, effectively changes
The distributed energy application thinking combined conscientiously for new energy with industrial area, living area.It, should in the case where current domestic electricity changes overall background
Effective auxiliary electricity is changed policy landing by kind mode, and forms the basic foundation stone of wisdom energy internet.
3, industry zone type " wind-light storage fills " micro-capacitance sensor mode is to realize green electric power supply direct-furnish, reduces carbon emission and environment is dirty
It contaminates, reduction energy source remote distance transmission waste, the effective way that the intelligent optimization of raising electric power and load is dispatched and configured.Pass through intelligence
The implementation of intelligent efficiency solution, improves energy source clean energy resource accounting, and load side energy consumption efficiency helps user to realize that green is used
Can, wisdom energy, effective energy.To the concentrated high energy-consuming enterprises such as steel, chemical industry, smelting, big data service, industrial area, people
Mouth dense region and isolated island etc. electricity units possess higher application value.
4, " wind-light storage fills " Industrial Area micro-capacitance sensor is the integrated energy system constructed under new concept.Its advantages are such as
Under：
(1) multiple fusion：Energy resource system and information system organically blend；Distribution type renewable energy and big system
The fusion of the energy.
(2) two raisings：Improve assets efficiency；Improve production of energy efficiency.
(3) three balances：Coordinated balance between source-source, i.e., a variety of distribution type renewable energies and big system energy across
Space-time balance；The space-time of coordinated balance between lotus-lotus, i.e. controllable burden, random load, electric load etc. balances；Source-net-
Based on the coordinated balance of load side between lotus.
(4) four effects：The effect of Reliability Assurance；The effect of economy；The effect of environmental protection；Sustainable development
Effect.
5, compared with conventional electrical distribution net, the ad hoc network property and operation characteristic of micro-capacitance sensor, and comprising therein numerous
Energy storage device, all to have the characteristics that micro-capacitance sensor power quality problem many new for detection control equipment.This invention is using active
The mode of electric-power filter APF7 (ActivePowerFilter) guarantees that the power quality of micro-capacitance sensor, current detecting use
Ip-iq method, the method that tracing control uses track with zero error and space vector pulse width modulation.Harmonic wave electricity is filtered out to micro-capacitance sensor
Stream reduces system losses, improves power quality, more excellent than traditional approach and effective.
Above-described is only presently preferred embodiments of the present invention, all made within the scope of the spirit and principles in the present invention
What modifications, equivalent substitutions and improvements etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of industry zone type wind-light storage fills micro-grid system, including main electric network source, micro-capacitance sensor backbone, wind-power electricity generation system
System, photovoltaic generating system, energy-storage system, load system, the main electric network source and micro-capacitance sensor backbone pass through grid-connected switch
Electrical connection, the wind generator system, photovoltaic generating system, energy-storage system, load system are connected in parallel to micro-capacitance sensor backbone；Its
It is characterized in that, the energy-storage system includes lead-acid battery energy storage subsystem in parallel, lithium battery energy storage battery subsystem, super capacitor
Energy storage subsystem.
2. industry zone type wind-light storage according to claim 1 fills micro-grid system, which is characterized in that further include active electric power
Filter APF；The Active Power Filter-APF APF and energy-storage system is connected in parallel to micro-capacitance sensor backbone.
3. industry zone type wind-light storage according to claim 1 fills micro-grid system, which is characterized in that the wind-power electricity generation
System includes horizontal axis wind generating subsystem in parallel, vertical axis wind power generation subsystem.
4. industry zone type wind-light storage according to claim 1 fills micro-grid system, which is characterized in that the photovoltaic power generation
System includes monocrystalline silicon photovoltaic power generation subsystem in parallel, polysilicon photovoltaic power generation subsystem, film photovoltaic power generation sub-system, glass
Glass curtain wall photovoltaic power generation sub-system.
5. industry zone type wind-light storage according to claim 1 fills micro-grid system, which is characterized in that the load system
Subsystem is loaded including important equipment load subsystem in parallel, electricity consumption peak load subsystem, normal lighting.
6. -5 any industry zone type wind-light storages fill micro-grid system according to claim 1, which is characterized in that further include with
The charging pile of energy-storage system parallel connection, the charging pile include that Electric Vehicle's Alternating trickle charge stake in parallel, electric car direct current are fast
Fill stake.
7. industry zone type wind-light storage according to claim 6 fills micro-grid system, which is characterized in that the electric car
Unsteady flow inversion is equipped between direct current charge stake, wind generator system, photovoltaic generating system, energy-storage system and micro-capacitance sensor backbone
Device.
8. industry zone type wind-light storage according to claim 7 fills micro-grid system, which is characterized in that further include micro-capacitance sensor energy
Measure management system EMS；The microgrid energy management system EMS and the unsteady flow inverter communicate to connect.
9. industry zone type wind-light storage according to claim 8 fills micro-grid system, which is characterized in that further include micro-capacitance sensor system
Unite controller MGCC and micro-capacitance sensor operational mode controller MSC；The wind generator system, photovoltaic generating system, energy storage system
System is matched respectively is arranged with micro source controller MC；The load system, Active Power Filter-APF APF, charging pile are matched respectively
It is arranged with load governor LC；The grid-connected switch, which is matched, is arranged with grid-connected switch controller SC；
The microgrid energy management system EMS and micro-grid system controller MGCC and micro-capacitance sensor operational mode controller
MSC communication connection；
Micro source controller MC, the load governor LC is communicated to connect with microgrid energy management system EMS respectively；
Micro source controller MC, the load governor LC is communicated to connect with micro-grid system controller MGCC respectively；
The grid-connected switch controller SC and microgrid energy management system EMS, micro-grid system controller MGCC communication link
It connects.
10. industry zone type wind-light storage according to claim 7 fills micro-grid system, which is characterized in that the wind-force hair
Electric system, photovoltaic generating system, energy-storage system, load system, Active Power Filter-APF APF, charging pile and micro-capacitance sensor backbone
Between be respectively equipped with control switch.
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Application publication date: 20181130 |