CN104113083A - New energy access and energy storage coordination control method under high permeability - Google Patents
New energy access and energy storage coordination control method under high permeability Download PDFInfo
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- CN104113083A CN104113083A CN201410345052.2A CN201410345052A CN104113083A CN 104113083 A CN104113083 A CN 104113083A CN 201410345052 A CN201410345052 A CN 201410345052A CN 104113083 A CN104113083 A CN 104113083A
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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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- 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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Abstract
Disclosed is a new energy access and energy storage coordination control method under high permeability. According to the method, a supervisory control and data acquisition (SCADA) system is used as a control center, and performs mutual communication with an electric vehicle charging station and a telecontrol station of a new energy power supply point, starting and stopping orders of a new energy power generating system are given by the SCADA system, and new energy access and energy storage coordination control can be achieved. A smallest system for implementing the method comprises an electric vehicle charging system in the electric vehicle charging station, a new energy power supply system and the SCADA system. According to the new energy access and energy storage coordination control method under the high permeability, as for grid connection of a random intermittent new energy power supply system, real-time balance of new energy output and adjustable loads can be achieved and the influence of the new energy grid connection on a public power grid can be greatly reduced on one hand; according to the random intermittent new energy grid-connection power supply scheme, isolated power can be provided for each area of a city in an emergency condition; ideally, power of electric vehicles of the city can be provided by new energy in terms of most of consumed energy, consumption of fossil energy can be reduced, and urban air pollution can be reduced.
Description
Technical field
The present invention relates to new forms of energy access and energy reserve control method for coordinating under a kind of high permeability, belong to new-energy grid-connected technical field.
Background technology
The world today, the non-renewable energy resources such as coal, oil signal for help repeatedly, and global warming issue is day by day serious, and energy problem becomes the bottleneck of restriction international community economic development day by day, exploitation Renewable Energy Resources, and utilize and become problem demanding prompt solution on a large scale.
One of core bottleneck problem of the grid-connected power supply of regenerative resource is, existing most of regenerative resource power supply adopts maximal power tracing control as wind power generation and ground photovoltaic power supply, and it is exerted oneself and all has random intervals characteristic.Large-scale photovoltaic or the grid-connected power supply of wind-force will cause exert oneself non-scheduling or be difficult for scheduling of electric network source.This will make power supply exert oneself not match with loading, cause the unstable or even more serious mains breakdown consequence of mains frequency under extreme case.
Summary of the invention
The object of the invention is, make network load and power supply mismatch problem according to the grid-connected form of existing regenerative resource, new forms of energy access and energy reserve control method for coordinating under a kind of high permeability are proposed, new forms of energy are exerted oneself and deferrable load Real-time Balancing, significantly reduce the impact that new-energy grid-connected brings utility network, and under the state of emergency (affecting under mains supply situation as war and ice damage), can be city isolated supply of electric power is provided.
Technical scheme of the present invention is that this method is taking SCADA system as control centre, with the mutual communication in telemechanical station of electric automobile charging station and new energy point; The open and close order of grid-connected power generation system is provided by SCADA system, realizes the coordination control with energy reserve to new forms of energy access.
The inventive method is implemented required minimum system and is comprised an electric automobile in electric automobile charging station and change charging system, new energy system (as wind power generation or photovoltaic generation) and SCADA (coordinate control centre) system.Described new energy system comprises the single-phase or three-phase mixed power supply system of photovoltaic, wind-force new forms of energy.Change in charging system at described electric automobile, comprise the single-phase and three-phase energy storage device charging system that super capacitor or storage battery form.
Described electric automobile charging station changes charging system and at least includes one and change to fill and control computer platform, several single-phase or three-phase super capacitor or storage battery and change charging system; Described changing filled the several single-phase or three-phase super capacitors of master control computer platform control or storage battery changes charging system absorbed power value or Absorption Current value in real time.
Change to fill at electric automobile charging station and control platform while judging that energy storage device needs energy storage,, to SCADA system, SCADA system is included this energy storage device in energy reserve coordination system to send energy storage signal (as needed the signal of energy storage and treating the capacity of needs storage); Control platform while judge that energy storage device energy storage completes changing to fill, send and stop filling signal to SCADA system, this energy storage device is separated energy reserve coordination system by SCADA system.
Opening when grid-connected power generation system, described three-phase grid-connected power generation system, by online ammeter, is sent to SCADA system by various communication modes by power or current instruction value, then is aggregated into region domestic demand by SCADA system and receives total new forms of energy power; Then performance number need being stored is dispensed to each in energy reserve coordination system and changes and fill station.Change and fill the energy value that station need to store and determine that each changes the apportioning cost of filling station according to each.Described in the control of Zai Youhuanchong district computer control platform, three-phase super capacitor or storage battery change charging system and receive new energy resources system to exert oneself completely.Simultaneously according to the scale that fills amount of capacity and energy storage device number and how much determine to open new forms of energy that changes that in real time can storage capacity in electrical network.
The inventive method specifically coordinates to control step:
(1) change charging system to super capacitor or storage battery and change storage battery to be charged or super capacitor;
(2) super capacitor or storage battery change charging system after replacing storage battery to be charged or super capacitor, change to fill and control platform and send and need energy storage information (as needed the signal of energy storage and treating the capacity of needs storage) to SCADA, after SCADA system reception information, included in energy reserve coordinated control system;
(3) SCADA system is sent performance number by the new forms of energy of being known by online ammeter and various communication modes and is gathered, and the performance number then need being stored is dispensed to each in energy reserve coordination system and changes and fill station; Change and fill the energy value that station need to store and determine that each changes the apportioning cost of filling station according to each; Meanwhile, SCADA also by according to energy storage device number and the real-time storable grid-connected power generation system of filling amount of capacity and determine whether to open or close some of changing;
SCADA system call meets the following conditions:
(1)
p
jreferring to that j changes fills the stores power value of distributing at station.P is that in SCADA system, new forms of energy send performance number and gather value.C
jbe that individual the changing of j filled the performance number that station need to be stored.
change and fill station and need stored energy for all under this SCADA system.
(2)
σ is that the power being obtained by engineering experience limits with the ratio of total absorptive capacity.
(4) filling station and control platform while judge that energy storage device energy storage completes changing, request being stopped filling order and inform SCADA system, SCADA is accepting after this information, is departed from energy coordination deposit system, stops its charging.
(5) if judge, network load is extremely heavy, and SCADA controls minimizing charging station and changes active power that charging system absorbs, and controlling the active power and the grid-connected power generation system power output difference that absorb is fixed value.Providing constant to heavy load electrical network exerts oneself.Alleviate burden under electrical network heavy load.
(6) at new forms of energy undercapacity during with sufficient super capacitor or storage battery, when selected one section of electric-net valley, SCADA stops new energy separately, fills station control system and fixes and controlled power at electrical network valley intussusception, to be full of energy storage device by changing.
In the time opening grid-connected power generation system, described single-phase grid-connected power generation system is sent to SCADA system by the ammeter of surfing the Net by its current instruction value or power command value.Be sent in real time electric automobile charging station by SCADA system again and change charging system control platform.Then changing charging system according to three-phase energy coordination deposit control mode You Huanchong district's computer control mutually single-phase super capacitor of platform control correspondence or storage battery receives new energy resources system to exert oneself completely.
In the situation that network load extremely weighs, change charging system control platform and can reduce charging station and change charging system and absorb energy, controlling the energy that absorbs and the grid-connected power generation system difference of exerting oneself is fixed value.Providing constant to heavy load electrical network exerts oneself.Alleviate burden under electrical network heavy load.
When new forms of energy undercapacity is bypassed the immediate leadership electric capacity or storage battery with abundance, while selecting one section of electric-net valley separately, stop new energy, fill station control system at the controlled power of electrical network valley intussusception, to be full of energy storage device by changing.
Electric automobile charging station in the present invention at least includes one and changes and fill master control computer platform, several single-phase or three-phase super capacitor or storage battery and change charging system.
Electric automobile charging station master control computer platform in the present invention can change the communication of charging system controller with multiple super capacitors or storage battery, controls each super capacitor or storage battery and changes the size of charging system from electrical network Absorption Current or active power.
Super capacitor in the present invention or storage battery change charging system and comprise and single-phasely change charging system and three-phase changes two types of charging systems.Two types form by electronic power convertor and controller.Described electronic power convertor comprises power electronics main circuit, sensor circuit and drive circuit.Described controller adopts charging realtime power control or charging current control mode control super capacitor or charge in batteries.
Described single-phase and three-phase change charging system difference and are that three-phase changes charging system and absorbs electrical network three-phase current, and the single-phase charging system that changes absorbs electrical network monophase current.
Described new energy system comprises the single-phase or three-phase mixed power supply system of the new forms of energy such as photovoltaic wind-force.
Described three-phase or single-phase photovoltaic system are made up of photovoltaic array, combining inverter and online ammeter.Described combining inverter is by power electronics main circuit, transducer, and controller and drive circuit form.
Described three-phase or single-phase wind generator system are made up of wind-driven generator, AC-DC module, combining inverter and online ammeter.Described combining inverter is by power electronics main circuit, transducer, and controller and drive circuit form.
Described power system communication control system is coordinated communication control task as SCADA system completes.
The invention has the beneficial effects as follows: the present invention proposes a kind of scheme of electrical network receiving new forms of energy.Random intervals new energy system is grid-connected by the inventive method, will make new forms of energy exert oneself and deferrable load Real-time Balancing on the one hand, significantly reduces the impact that new-energy grid-connected brings utility network; On the other hand, this random intervals new-energy grid-connected power supply plan can be city regional isolated supply of electric power is provided under the state of emergency (affecting under mains supply situation as war and ice damage); Finally, in the ideal situation, city electric car power consumption by new energy, has reduced the consumption of fossil energy by major part, has alleviated urban air pollution, reduces the spending of new power plant construction for vehicle charging.
The present invention is applicable to new forms of energy access and coordinates to control with energy reserve.
Brief description of the drawings
Fig. 1 is new-energy grid-connected schematic diagram of the present invention;
In figure, the 1st, three-phase photovoltaic generating system; The 2nd, single-phase photovoltaic generating system; The 3rd, wind generator system; The 4th, large-sized photovoltaic power station; The 5th, large-scale wind power field; The 6th, the grid-connected power generation system of other types; The 7th, change and fill control computer platform; The 8th, change and fill station control system; The 9th, SCADA system; The 10th, three-phase super capacitor or storage battery change charging system; The 11st, single-phase super capacitor or storage battery change charging system.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated.
As shown in Figure 1, in eight frames, represent that electric automobile charging station changes charging system.Described electric automobile charging station at least include one change fill control computer platform 7, several single-phase super capacitors or storage battery change charging system 11 or three-phase super capacitor or storage battery and change charging system 10, the communication control unit RTU being connected with system.Described communication control unit RTU completes SCADA system and electric automobile changes communication and the control of filling between control computer platform.
Described new energy system is the single-phase or three-phase mixed power supply systems of the new forms of energy such as photovoltaic wind-force.Wherein comprise the grid-connected power generation system 6 of wind generator system 3, three-phase photovoltaic generating system 1 and single-phase photovoltaic generating system 2, large-sized photovoltaic power station 4, large-scale wind power field 5 and other types.
Described three-phase photovoltaic generating system 1 or single-phase photovoltaic system 2 are made up of photovoltaic array, combining inverter and online ammeter.
Described wind generator system 3 is made up of single-phase or three-phase wind-driven generator, AC-DC module, combining inverter and online ammeter.
SCADA control system 9 is the control centre of whole energy reserve coherent system, and SCADA system is controlled each device by each telemechanical station RTU.
Described electric automobile changes to fill to control as changing to fill controls computer platform 7.
Described new forms of energy access with energy reserve control method for coordinating is: taking SCADA system as control centre, with the wherein mutual communication in telemechanical station of electric automobile charging station and new energy point; The open and close order of grid-connected power generation system is provided by SCADA system.
Change to fill at electric automobile charging station and control computer platform 7 while judging that energy storage device needs energy storage,, to SCADA system 9, SCADA system 9 is included this energy storage device in energy reserve coordination system to send energy storage signal (as needed the signal of energy storage and treating the capacity of needs storage); Control computer platform 7 while judging that energy storage device energy storage completes changing to fill, send and stop filling signal to SCADA system, SCADA system 9 is changed charging station by this electric automobile and is separated energy reserve and coordinate system.
Opening when grid-connected power generation system, described three-phase grid-connected power generation system, by online ammeter, is sent to SCADA system 9 with various communication modes by power or current instruction value, then is aggregated into region domestic demand by SCADA system and receives total new forms of energy power; SCADA system is changed this power division to fill to electric automobile charging station in compass of competency and is controlled computer platform 7, change and fill the energy value that station need to store and determine that each changes the apportioning cost of filling station according to each, three-phase super capacitor or storage battery change charging system 10 and receive new energy resources system to exert oneself completely described in the control of Zai Youhuanchong district computer control platform.Simultaneously SCADA system is according to the in real time storable scale that fills amount of capacity and energy storage device number and how much determine to open new forms of energy that changes in electrical network.SCADA system call is taking following condition as main:
(1)
p
jreferring to that j changes fills the stores power value of distributing at station.P is that in SCADA system, new forms of energy send performance number and gather value.C
jbe that individual the changing of j filled the performance number that station need to be stored.
change and fill station and need stored energy for all under this SCADA system.
(2)
σ is that the power being obtained by engineering experience limits with the ratio of total absorptive capacity.
In the time opening grid-connected power generation system, single-phase grid-connected power generation system 2 is sent to SCADA system by online ammeter by its current instruction value or power command value.Be sent in real time electric automobile charging station by SCADA system again and change charging system control platform.Then the mutually single-phase super capacitor of You Huanchong district computer control platform control correspondence or storage battery change charging system 11 and receive single-phase new energy resources system to exert oneself completely.
In the situation that network load extremely weighs, change to fill and control computer platform 7 and can reduce charging station and change charging system and absorb energy, controlling the energy that absorbs and the grid-connected power generation system difference of exerting oneself is fixed value.Providing constant to heavy load electrical network exerts oneself.Alleviate burden under electrical network heavy load.
When new forms of energy undercapacity is bypassed the immediate leadership electric capacity or storage battery with abundance, while selecting one section of electric-net valley separately, stop new energy, fill station control system 8 at the controlled power of electrical network valley intussusception, to be full of energy storage device by changing.
Claims (6)
1. new forms of energy access and an energy reserve control method for coordinating under high permeability, is characterized in that, described method is taking SCADA system as control centre, with the mutual communication in telemechanical station of electric automobile charging station and new energy point; The open and close order of grid-connected power generation system is provided by SCADA system, realizes the coordination control with energy reserve to new forms of energy access;
Described method is implemented the electric automobile that required minimum system comprises in electric automobile charging station and is changed charging system, new energy system and SCADA system;
The coordination control step of described method is:
(1) change charging system to super capacitor or storage battery and change storage battery to be charged or super capacitor;
(2) super capacitor or storage battery change charging system and are changing after storage battery to be charged or super capacitor, change to fill and control platform and send and need energy storage information to SCADA, after SCADA system reception information, are included in energy reserve coordinated control system;
(3) SCADA system is sent performance number by the new forms of energy of being known by online ammeter and various communication modes and is gathered, and the performance number then need being stored is dispensed to each in energy reserve coordination system and changes and fill station; Change and fill the energy value that station need to store and determine that each changes the apportioning cost of filling station according to each; Meanwhile, SCADA also by according to energy storage device number and the real-time storable grid-connected power generation system of filling amount of capacity and determine whether to open or close some of changing;
(4) filling station and control platform while judge that energy storage device energy storage completes changing, request being stopped filling order and inform SCADA system, SCADA is accepting after this information, is departed from energy coordination deposit system, stops its charging;
(5) if judge, network load is extremely heavy, and SCADA controls minimizing charging station and changes active power that charging system absorbs, and controlling the active power and the grid-connected power generation system power output difference that absorb is fixed value; Providing constant to heavy load electrical network exerts oneself; Alleviate burden under electrical network heavy load;
(6) at new forms of energy undercapacity during with sufficient super capacitor or storage battery, when selected one section of electric-net valley, SCADA stops new energy separately, fills station control system and fixes and controlled power at electrical network valley intussusception, to be full of energy storage device by changing.
2. new forms of energy access and energy reserve control method for coordinating under a kind of high permeability according to claim 1, is characterized in that, described SCADA system call meets the following conditions:
(1)
p
jreferring to that j changes fills the stores power value of distributing at station; P is that in SCADA system, new forms of energy send performance number and gather value; C
jbe that individual the changing of j filled the performance number that station need to be stored;
change and fill station and need stored energy for all under this SCADA system;
(2)
σ is that the power being obtained by engineering experience limits with the ratio of total absorptive capacity.
3. new forms of energy access and energy reserve control method for coordinating under a kind of high permeability according to claim 1, is characterized in that the single-phase or three-phase mixed power supply system that described new energy system comprises photovoltaic, wind-force new forms of energy.
4. new forms of energy access and energy reserve control method for coordinating under a kind of high permeability according to claim 1, is characterized in that, described electric automobile changes in charging system, comprises the single-phase and three-phase energy storage device charging system that super capacitor or storage battery form.
5. new forms of energy access and energy reserve control method for coordinating under a kind of high permeability according to claim 1, it is characterized in that, described electric automobile charging station changes charging system and at least includes one and change to fill and control computer platform, several single-phase or three-phase super capacitor or storage battery and change charging system; Described changing filled the several single-phase or three-phase super capacitors of master control computer platform control or storage battery changes charging system absorbed power value or Absorption Current value in real time.
6. new forms of energy access and energy reserve control method for coordinating under a kind of high permeability according to claim 1, it is characterized in that, described electric automobile charging station master control computer platform can change the communication of charging system controller with multiple super capacitors or storage battery, controls each super capacitor or storage battery and changes the size of charging system from electrical network Absorption Current or active power.
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| CN104113083B (en) | 2016-07-06 |
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