CN105914799A - V2G (Vehicle-to-grid) AC-DC mixed micro grid power supply system and structure - Google Patents
V2G (Vehicle-to-grid) AC-DC mixed micro grid power supply system and structure Download PDFInfo
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Abstract
The invention relates to a V2G (Vehicle-to-grid) AC-DC mixed micro grid power supply system and structure, which comprise a DC micro grid and an AC micro grid wherein the DC micro grid includes DC buses, distributed type DC power supply apparatuses, DC energy storing apparatuses, DC charging piles, and changed cell DC charging and discharging apparatuses. The distributed type DC power supply apparatuses, the DC energy storing apparatuses, the DC charging piles, and the changed cell DC charging and discharging apparatuses are connected to the DC buses through their own current transformers. The AC micro grid comprises AC buses and AC power grid connection apparatuses in connection to the AC buses through their own current transformers. The AC buses are connected to the DC buses through the DC-AC current transformers in the micro grid. The AC power grid connection apparatuses are connected to a larger power grid. According to the invention, the system and structure can effectively reduce the processing work in photovoltaic inversion and charging pile rectification, lower the construction costs and operation costs, ease the pressure of a power grid by making an electric vehicle cell a mobile type energy storage apparatus, increase the stability and reliability of a power grid and cut down the operation costs for a power system.
Description
Technical field
The present invention relates to a kind of V2G alternating current-direct current mixing micro-capacitance sensor power architecture, be specifically related to a kind of power architecture being applied in terms of charging electric vehicle and electric network coordination matching management.
Background technology
nullV2G(car electricity interconnection mode) refer to that passenger car and electrical network use the control technology of energy in bidirectional flow，Electric motor car the most unidirectional reception power grid energy，Energy can also be provided to support to electrical network if desired，It it is the strong backing of following intelligent grid，The installed capacity in power grid of China in 2015 is 2000GW,Automotive society recoverable amount is 1.6 hundred million，Annual automobile increment is 20,000,000，Each power of vehicle calculates according to 50KW，20000000*50kw=1000GW，The power increasing automobile the most every year newly is equivalent to the installed capacity of half electrical network，Big data show that the comprehensive utilization rate of automobile only has 5%，One hour every day，Whole society's power of vehicle capacity is 4 times of net capacity，Stored energy capacitance is the 20% of grid generation amount，And typically electromotor utilization rate is 60%，Annual 4800 hours，Data above shows，The energy storage scale of construction of future automobile exceeds well over other any energy storage modes.
V2G technology is the direction of new-energy automobile, by V2G technology, the charging electric vehicle impact to normal grid (can be described as bulk power grid or referred to as electrical network) can be smoothed, it is possible not only to make charging interval and charge power controlled, reversely can also discharge to electrical network if desired, thus alleviate the peak pressure of electrical network；V2G technology also helps roadside assistance, when an electric motor car does not has electricity to need not be towed back to, only needs two V2G electric motor cars just can realize quickly filling；The electric automobile using V2G technology is suitable for doing disaster area breakdown lorry, tool car, and the V2G electric automobile of a full electricity of 50kwh can supply one family the electricity of a week.
The Development of Electric Vehicles of currently employed V2G technology is rapid, but power grid construction and electrically-charging equipment build serious backwardness.Being mainly manifested in: 1, distribution network construction is asynchronous, charging pile and charging station access electrical network difficulty；2, the conflicting of charging pile and existing parking stall；3, charging rate is slow, needs to wait in line；4 electrically-charging equipment sites are not enough, and especially remote districts are less.
Summary of the invention
In order to solve the drawbacks described above of prior art, the invention provides a kind of V2G alternating current-direct current mixing micro-capacitance sensor power architecture, distributed new generating, charging electric vehicle, electrical network energy storage and grid power exchange well management is got up, with the impact to electrical network of the smooth charging electric vehicle, and electric motor car is changed electricity battery and on-vehicle battery as energy storage means, improve micro-capacitance sensor to the frequency modulation of bulk power grid and peak modulation capacity, and then the economic benefit of raising micro-capacitance sensor, improve the safety and stability of bulk power grid.
The present invention realizes the technical scheme of above-mentioned purpose:
A kind of V2G alternating current-direct current mixing micro-capacitance sensor power architecture, it includes direct-current grid and exchanges micro-capacitance sensor,
Described direct-current grid includes:
Dc bus, described dc bus connects bulk power grid by direct current grid-connecting apparatus, or, described dc bus connects bulk power grid by direct current grid-connecting apparatus with exchanging two approach of micro-capacitance sensor, described direct current grid-connecting apparatus is mainly made up of interconnective direct current grid-connected converter and the grid-connected switching device of direct current, the grid-connected switching device of described direct current can be under the control of management control system and/or according to the connection between the switching normal ON set or cut-out direct-current grid and bulk power grid, described direct current grid-connected converter is two way convertor, can under the control of management control system and/or according to set power transmission standard implementation by bulk power grid to direct-current grid power transmission or by direct-current grid to bulk power grid power transmission；
Distributed DC electric supply installation, including one or more distributed DC power, the distributed DC power in described distributed DC electric supply installation accesses described dc bus by distributed DC power current transformer, and the electric energy produced is sent into dc bus；
DC energy storage device, mainly it is made up of energy-storage battery group and DC energy storage current transformer, the energy-storage battery group of described storage DC energy storage device connects described dc bus by described DC energy storage current transformer, described DC energy storage current transformer is two way convertor, it is possible to carry out DC charging (being charged energy-storage battery group by dc bus) or the direct-current discharge (by energy-storage battery group to dc bus power transmission) of energy-storage battery group under the control of management control system；
Direct-current charging post (electric vehicle DC charge and discharge device, it is called for short charging pile), it is provided with electric vehicle DC discharge and recharge current transformer, one end of described electric vehicle DC discharge and recharge current transformer connects described dc bus, the other end connects the electric motor car interface having the charging pile interface (the charging pile joint including in the charge cable of electric motor car) with electric motor car supporting, described electric vehicle DC discharge and recharge current transformer is two way convertor, discharge and recharge under the control of management control system or outside foundation can instruct DC charging (by dc bus to charging battery of electric vehicle) or the direct-current discharge (by battery of electric vehicle to dc bus power transmission) carrying out battery of electric vehicle；
Change electricity battery DC charge and discharge device, it is provided with and changes electricity battery DC discharge and recharge current transformer, described one end changing electricity battery DC discharge and recharge current transformer connects described dc bus, the other end connect have can connect electric motor car change electricity battery change electricity battery interface apparatus, the described electricity battery DC discharge and recharge current transformer that changes is two way convertor, or electric motor car can be carried out according to outside discharge and recharge instruction under the control of management control system and change DC charging (by dc bus to changing electricity battery charging) or the direct-current discharge (by changing electric battery to dc bus power transmission) of electricity battery
Described exchange micro-capacitance sensor includes:
Ac bus, described ac bus connects described dc bus by AC convertor straight between micro-capacitance sensor, bulk power grid is connected by exchange grid-connecting apparatus, to realize the connection exchanged between micro-capacitance sensor and direct current net electrical network and the connection exchanging between micro-capacitance sensor and bulk power grid respectively, between described micro-capacitance sensor, straight AC convertor is two way convertor, it is possible under the control of management control system and/or according to set power transmission standard implementation by direct-current grid to exchange micro-capacitance sensor power transmission or by exchange micro-capacitance sensor to direct-current grid power transmission；
Exchange grid-connecting apparatus, mainly it is made up of with exchanging switching device interconnective exchange grid-connected converter, described exchange switching device can be under the control of management control system and/or according to the connection imposed a condition between connection or cut-out exchange micro-capacitance sensor and bulk power grid, described exchange grid-connected converter is two way convertor, it is possible under the control of management control system and/or according to set power transmission standard implementation by bulk power grid to exchange micro-capacitance sensor power transmission or by exchange micro-capacitance sensor to bulk power grid power transmission；
Described ac bus connects to be had or is not connected to AC load；
Described ac bus connects to be had or is not connected to distributed alternating current power supply.
Against the background of the prior art, described distributed DC power generally can include distributed photovoltaic power generation system, described distributed photovoltaic power generation system can be arranged according to actual needs, such as, its solar panel (photovoltaic module) is arranged at bicycle shed or/and roof.
Described AC load can include alternating-current charging pile (electric motor car exchange charge and discharge device, it is called for short charging pile), described alternating-current charging pile is provided with electric motor car exchange discharge and recharge current transformer, one end of described electric motor car exchange discharge and recharge current transformer connects described ac bus, the other end connects the electric motor car interface having the charging pile interface (the charging pile joint including in the charge cable of electric motor car) with electric motor car supporting, described electric motor car exchange discharge and recharge current transformer is two way convertor, discharge and recharge under the control of management control system or outside foundation can instruct AC charging (by ac bus to charging battery of electric vehicle) or the alternating current discharge (by battery of electric vehicle to ac bus power transmission) carrying out battery of electric vehicle.
Described AC load can include exchanging energy storage device, mainly it is made up of energy-storage battery group and exchange energy accumulation current converter, the energy-storage battery group of described exchange energy storage device connects described ac bus by described exchange energy accumulation current converter, described exchange energy accumulation current converter is two way convertor, it is possible to carry out AC charging (being charged energy-storage battery group by ac bus) or the alternating current discharge (by energy-storage battery group to ac bus power transmission) of energy-storage battery group under the control of management control system.
Described AC load can include changing electricity battery exchange charge and discharge device, it is provided with and changes electricity battery exchange discharge and recharge current transformer, described one end changing electricity battery exchange discharge and recharge current transformer connects described ac bus, the other end connect have can connect electric motor car change electricity battery change electricity battery interface apparatus, the described electricity battery exchange discharge and recharge current transformer that changes is two way convertor, or electric motor car can be carried out according to outside discharge and recharge instruction under the control of management control system and change AC charging (by ac bus to changing electricity battery charging) or the alternating current discharge (by changing electric battery to ac bus power transmission) of electricity battery.
Described management control system can include master control set and be arranged at described direct-current grid and the described some detection devices for obtaining detection signal exchanged in micro-capacitance sensor, described master control set communicates to connect with each described detection device, the detection signal being derived from described detection device is analyzed computing, controls each current transformer and the duty of each switching device according to control strategy.
Described management control system is also provided with communication module and is communicated to connect by described communication module and remote server and/or carried out network data transmission.
The energy-storage battery of described energy-storage battery group can use any one or more in lithium battery, lead carbon battery, ultracapacitor and flow battery.
Described direct current switching device and/or exchange switching device can be to use corresponding direct current or the form of exchange gateway interface cabinet.
Preferably, the electric motor car of part or all of access system is changed electricity battery and is used for energy storage regulation, power consumption and power supply total amount in the net of place micro-capacitance sensor (direct-current grid and/or exchange micro-capacitance sensor) is regulated by controlling its charging and discharging, when the energy storage regulating power that electric motor car changes electricity battery disclosure satisfy that the energy storage regulation of micro-capacitance sensor requires, omit the energy storage device of local (in micro-capacitance sensor) or do not omit the energy storage device of this locality, when being provided with energy storage device (not omitting the energy storage energy storage device of this locality) in micro-capacitance sensor, the described energy storage device of preferential employing carries out netting interior power consumption total amount and the regulation of power supply total amount；
Preferably, the battery of electric vehicle (on-vehicle battery) of part or all of access system is regulated for energy storage, power consumption and power supply total amount in the net of place micro-capacitance sensor is regulated by controlling its charging and discharging, the battery of electric vehicle being not used in energy storage regulation according to external command or foundation established standards is not used in energy storage regulation, the battery of electric vehicle that described foundation established standards is not used in energy storage regulation at least includes the battery of electric vehicle using fast mold filling formula to charge, when being provided with energy storage device in micro-capacitance sensor and/or the electric motor car for energy storage regulation changes electricity battery, preferential employing energy storage device and/or the electric motor car for energy storage regulation change electricity battery to be carried out netting interior power consumption total amount and the regulation of total amount of powering；
Preferably, according to electrical safety and the economic principle of micro-capacitance sensor self, realize isolated power grid by switching on or off the connection with bulk power grid or be incorporated into the power networks,
Preferably, under isolated power grid state (i.e. direct-current grid and the state exchanging micro-capacitance sensor and not accessing bulk power grid), economic principle according to micro-capacitance sensor self, by power consumption total amount and power supply total amount in energy storage capacity regulation net in net, make the power consumption total amount in net and total amount phase equilibrium of powering, and preferred arrangement electricity consumption in the following order: the first order is for be in the battery of electric vehicle filling state soon；Second order is to be in the battery of electric vehicle of trickle charge state；3rd order is that the electric motor car regulated for energy storage changes electricity battery；4th order is energy-storage battery group, meanwhile, set the electric motor car of certain proportion or quantity and change electricity battery and change electricity battery as the electric motor car being not used in energy storage regulation, and listed in the first order or second order of electricity consumption of giving priority in arranging for, or part lists the first order in, part lists the second order in；
nullPreferably，Under the state of being incorporated into the power networks (i.e. direct-current grid and/or exchange micro-capacitance sensor accesses the state of bulk power grid)，Economic principle according to microgrid self，It is that bulk power grid carries out frequency modulation and/or peak regulation by power consumption total amount in regulation net and power supply total amount，When because load is excessive, frequency declines or downward trend occurs bulk power grid，Reduce micro-capacitance sensor and to the power consumption of bulk power grid or increase the micro-capacitance sensor power transmission amount to bulk power grid，When because load is too small, frequency raises or rising trend occurs bulk power grid，Increase micro-capacitance sensor and to the power consumption of bulk power grid or reduce the micro-capacitance sensor power transmission amount to bulk power grid，When the peak of power consumption of bulk power grid，Reduce micro-capacitance sensor and the power consumption of bulk power grid or increasing micro-capacitance sensor are added the power transmission amount to bulk power grid，When the low power consumption of bulk power grid，Increase micro-capacitance sensor and to the power consumption of bulk power grid or reduce the micro-capacitance sensor power transmission amount to bulk power grid.
The invention have the benefit that
The electric energy produced by distributed power supply system accesses direct-current grid, coordinates energy-storage system and electric automobile charging pile to form DC micro power grid system, the problem solving electric automobile distribution network construction；By arranging quick-inflating type charging pile and trickle charge formula charging pile solves the charging problems of user；Connect bulk power grid by exchange micro-capacitance sensor, solve micro-grid connection problem, it is achieved and the connection between bulk power grid, increasing reliability of operation of the present invention, enable the invention to switch the grid-connected or off-network method of operation at any time simultaneously, the method for operation is flexible；The distributed micro-grid system of the present invention solves the universal of the problem that electrically-charging equipment site is not enough, beneficially cleaning vehicle.
With battery of electric vehicle (on-vehicle battery) with change electricity battery as Mobile energy storage device slow charging net pressure, thus can provide for the intermittent renewable energy of distributed power supply system and support, lower CO2Discharge, improves the grid-connected ability of distributed power supply system.The present invention can provide such as the assistant service such as peak regulation or frequency modulation for electrical network simultaneously, increases grid stability and reliability, reduces power system operation cost.
Electric current in direct-current grid all with galvanic form between distributed power supply system and dc bus, between energy-storage system and dc bus, between electric automobile charging pile and dc bus conduct.The dc bus using galvanic form to be directly connected in direct-current grid can effectively reduce photovoltaic inversion and charging pile rectification link, reduces construction cost and the operation cost of system, improves system effectiveness, increase economic efficiency.
Accompanying drawing explanation
Fig. 1 is the frame structure sketch of the present invention；
Fig. 2 is the power architecture sketch of the present invention.
Detailed description of the invention
Seeing Fig. 1 to Fig. 2, the Typical Disposition of the present invention is:
Photovoltaic+energy storage+electrically-charging equipment+direct-current grid+exchange micro-capacitance sensor+management control system
Photovoltaic generation: distributed photovoltaic power generation system (abbreviation photovoltaic) is the main distributed DC power under prior art background, can by use generate power for their own use, remaining electricity online in the way of, to generate power for their own use, electrical network adjust be auxiliary.
Photovoltaic can be the various ways such as photovoltaic bicycle shed, roof photovoltaic, accesses micro-capacitance sensor nearby, as the electric supply installation in direct-current grid, may be used for charging electric vehicle.
Middle-size and small-size photovoltaic system, photovoltaic capacity is advisable with 30kW-500kW；Large scale system is more than 500kW, or the photovoltaic generation of MW class.
Energy storage device: can be according to prior art or other possible technology, energy storage device (energy-storage system) for micro-capacitance sensor configuration various ways, its energy-storage battery group can use the technology of any suitable, such as lithium battery, lead carbon battery, ultracapacitor and flow battery etc..
The batteries of electric automobile (electric motor car changes electricity battery) changing battery system can be included in energy-storage system, part or all of electric motor car is changed electricity battery and is used for energy storage regulation by it, device as standby energy storage, when the regulating power deficiency of special energy storage device, regulate for energy storage, a certain proportion of electricity battery that changes can be set as required and be not used in energy storage, this part is changed electricity battery and is in charged resting state, to change at any time, change electricity number of batteries or the ratio of resting state determine according to practical situation, generally should ensure that the needs changing battery.
When, after the degree that the scale changing electricity battery reaches certain, changing electricity battery iff use and be enough to realize energy storage regulation requirement, it is convenient to omit (being not provided with) energy storage device, all energy-storage battery group all uses the form changing electricity battery in other words.
The charge and discharge device of battery of electric vehicle: for direct-current grid, the DC-DC special charging stake that configuring direct current micro-capacitance sensor is special, can be to include that fill soon and trickle charge two kinds of forms, development according to technology, can also arrange on same charging pile and fill soon and two kinds of charge modes of trickle charge, to improve conversion efficiency, reduce equipment cost.
For exchange micro-capacitance sensor, the ac/dc charging pile that configuration exchange micro-capacitance sensor is conventional, the charging pile of exchange micro-capacitance sensor can also include that fill soon and trickle charge two kinds of forms, according to the development of technology, it is also possible to arrange on same charging pile and fill soon and two kinds of charge modes of trickle charge.
Direct-current grid and dc bus: photovoltaic, energy storage device and electric motor car can access direct-current grid in direct current mode, various different devices arrange corresponding current transformer, the dc bus of direct-current grid is accessed by current transformer, such as, the DC/DC converter of photovoltaic, the DC-DC two way convertor of energy storage device, the DC-DC two way convertor that electric automobile charging pile uses, and it is arranged as required to corresponding DC power distribution cabinet, protection and measuring equipment etc., various two way convertors can be under the control of management control system, carry out the power transmission of any direction, so that respective battery i.e. can be charged, electric energy can also be sent, regulate for use in energy storage.
Exchange micro-capacitance sensor and ac bus: exchange micro-capacitance sensor, as the intermediate link between direct-current grid and bulk power grid, connects direct-current grid by special AC/DC converter, by gateway interface cabinet (containing high-speed switch) at PCC (Point
Of Common Coupling, micro-grid connection PCC) place is connected with bulk power grid, exchange micro-capacitance sensor self can band AC load, including general alternating-current charging pile, ac/dc charging pile etc..
Management control system: possess the observing and controlling function of alternating current-direct current mixing micro-capacitance sensor, possess and higher level's information management operation platform interaction capabilities.
Including energy management (EMS): by recording, add up, analyze the operation power data of system, integrated management scheduling generation of electricity by new energy, energy storage, power grid energy exchange, the charging and discharging of electric automobile, the operation making system reaches optimum state, it is achieved preferably economic benefit.
The interface of cloud: by wireless communication module (interface), it is associated with the remote server of higher level's electric automobile management platform, generation of electricity by new energy management platform, intelligent grid monitor supervision platform etc., can be with access network, data interaction is carried out, to realize user and remotely monitor, to manage by network and each management terminal.
Prior art and other the possible technology that can use any suitable realize present architecture and corresponding working method.Such as:
(1) DC micro-electric network technology is used, photovoltaic generating system, energy storage device, electric automobile charging pile etc. are all connected on dc bus, the voltage range of dc bus is that DC600V is to reduce photovoltaic inversion and charging pile rectification link, the construction cost of reduction system and operation cost, improve system effectiveness, increase economic efficiency；
(2) at present at the lead carbon battery (energy-storage system) the highest by cost performance, electric automobile retired recycling battery can be used from now on, as supporting energy storage, to reduce cost；After configuration energy-storage system, it is possible to business can also be charged photovoltaic does not generates electricity when；
(3) if following employing intelligent battery technology, rentable battery operation mode so that electric automobile changes and the most also obtains large-scale promotion application, then photovoltaic generation can be utilized directly to changing electricity battery charging, system is more succinct, efficiently；
(4) if electric automobile charging and conversion electric depositing, in the case of micro-grid system photovoltaic generation, preferentially give charging electric vehicle, change electricity battery charging without giving during charge requirement, then can reduce energy storage configuration, raising economy；
(5) based on above-mentioned typical scenario, the V2G micro-grid system modular design of different scales can be carried out.
(6) along the line at highway, service area periphery, the new-type compound V2G micro-grid system of large-scale MW class can be built.
The operational mode of described direct-current grid is: the electric energy of generation is delivered to dc bus by described distributed power supply system, when charging electric vehicle, electric energy in described direct-current grid preferentially supplies electric automobile charging pile and uses to meet charging electric vehicle, particularly when using fast charge mode charging, battery of electric vehicle is generally not involved in energy storage regulation.nullCharge mode can be limited by the charge mode of charging pile self，Can also arrange to use and fill soon and the charging pile of trickle charge both of which，The All Time that often need not accessing due to the battery of electric vehicle under trickle charge pattern is all charged，Parked vehicle the most whole night，The battery of electric vehicle that if desired these batteries can access charging pile includes energy storage regulation system in，Can be by arranging corresponding button or input equipment on charging pile，Whether input allows this battery is included in energy storage regulation and/or input down time (time span) and/or answers the related datas such as charged time (time of using cars)，The charge volume needed when even can also input car next time or stroke mileage，Within the corresponding slack time, included in energy storage regulation by management control system，And ensure that battery is filled with (or charge volume meets use and requires) of electricity when driving.After scale is big to a certain extent, this energy storage regulation has practical significance for the stable operation of bulk power grid, such as the frequency modulation of bulk power grid.When without charging electric vehicle, electric energy in described direct-current grid preferentially supplies and changes electricity battery and (including set of cells) be charged, change the demand of battery meeting electric motor car, it is charged to energy-storage battery group the most again, ensure the properly functioning of described direct-current grid as electric energy storage, more remaining electric energy is delivered in described exchange micro-capacitance sensor.Certain condition can be set, control to include the energy-storage battery of energy storage regulation, the discharge and recharge equilibrium point changing the battery of electric vehicle (if appropriate) of electricity battery and part trickle charge state and/or charge and discharge mode in, to realize economic benefit and the stable operation of network system (micro-capacitance sensor and bulk power grid) of micro-capacitance sensor self maximum.Thus, include energy storage in and regulate by electricity battery etc. will be changed, it is possible to efficiently reduce the configuration of energy storage device, also comply with economic requirement simultaneously, make benefit.
Electric energy conveying between micro-capacitance sensor and bulk power grid is two-way, and bulk power grid is able to receive that the electric energy that described exchange micro-capacitance sensor transmits, it is also possible to carry electric energy to described exchange micro-capacitance sensor.Grid-connected from there through with bulk power grid, i.e. can make up the deficiency of micro-capacitance sensor self generating ability, it is possible to by the energy storage regulating power of micro-capacitance sensor, it is achieved frequency modulation and the peak regulation to bulk power grid.
Described power architecture is additionally provided with management control system, and described management control system includes master control set and the detection device being arranged on described direct-current grid with exchange in micro-capacitance sensor in each equipment, described master control set and the communication connection of described detection device.Described management control system is capable of direct-current grid and the observing and controlling function exchanging micro-capacitance sensor, by recording, add up, analyze the operation power data of system, integrated management scheduling distributed power supply system, energy-storage system, energy exchange between electric automobile charging pile and direct-current grid and exchange micro-capacitance sensor, the operation making system reaches optimum state, it is achieved preferably economic benefit.
Described management control system is additionally provided with communication module, and described management control system communicates to connect with remote server.Described remote server includes electric automobile management platform, generation of electricity by new energy management platform and intelligent grid monitor supervision platform, realizes user's remote monitoring and administration by telecommunication.
Each described current transformer and management control system and control mode can use prior art or the other technologies of any suitable.Sensor or the signal pickup assembly of any suitable can be used, the coherent signal even coherent signal of bulk power grid everywhere in employing system, send into management control system and be analyzed computing, it is controlled with the relevant criterion according to operation result and setting, when receiving external command, generally can preferentially be adapted to external command.
Disclosed by the invention each preferably with optional technological means, unless otherwise indicated and preferred or optional technological means is outside the limiting further of another technological means, all can form some different technical schemes in any combination.
Claims (10)
1. a V2G alternating current-direct current mixing micro-capacitance sensor power architecture, it is characterised in that include direct-current grid and exchange micro-capacitance sensor,
Described direct-current grid includes:
Dc bus, described dc bus connects bulk power grid by direct current grid-connecting apparatus, or, described dc bus connects bulk power grid by direct current grid-connecting apparatus with exchanging two approach of micro-capacitance sensor, described direct current grid-connecting apparatus is mainly made up of interconnective direct current grid-connected converter and the grid-connected switching device of direct current, the grid-connected switching device of described direct current can be under the control of management control system and/or according to the connection between the switching normal ON set or cut-out direct-current grid and bulk power grid, described direct current grid-connected converter is two way convertor, can under the control of management control system and/or according to set power transmission standard implementation by bulk power grid to direct-current grid power transmission or by direct-current grid to bulk power grid power transmission；
Distributed DC electric supply installation, including one or more distributed DC power, the distributed DC power in described distributed DC electric supply installation accesses described dc bus by distributed DC power current transformer, and the electric energy produced is sent into dc bus；
DC energy storage device, mainly it is made up of energy-storage battery group and DC energy storage current transformer, the energy-storage battery group of described storage DC energy storage device connects described dc bus by described DC energy storage current transformer, described DC energy storage current transformer is two way convertor, it is possible to carry out DC charging or the direct-current discharge of energy-storage battery group under the control of management control system；
Direct-current charging post, it is provided with electric vehicle DC discharge and recharge current transformer, one end of described electric vehicle DC discharge and recharge current transformer connects described dc bus, the other end connects the electric motor car interface having the charging pile interface kit with electric motor car, described electric vehicle DC discharge and recharge current transformer is two way convertor, it is possible to the discharge and recharge instruction under the control of management control system or outside foundation carries out DC charging or the direct-current discharge of battery of electric vehicle；
Change electricity battery DC charge and discharge device, it is provided with and changes electricity battery DC discharge and recharge current transformer, described one end changing electricity battery DC discharge and recharge current transformer connects described dc bus, the other end connect have can connect electric motor car change electricity battery change electricity battery interface apparatus, the described electricity battery DC discharge and recharge current transformer that changes is two way convertor, or electric motor car can be carried out according to outside discharge and recharge instruction under the control of management control system and change DC charging or the direct-current discharge of electric battery
Described exchange micro-capacitance sensor includes:
Ac bus, described ac bus connects described dc bus by AC convertor straight between micro-capacitance sensor, bulk power grid is connected by exchange grid-connecting apparatus, to realize the connection exchanged between micro-capacitance sensor and direct current net electrical network and the connection exchanging between micro-capacitance sensor and bulk power grid respectively, between described micro-capacitance sensor, straight AC convertor is two way convertor, it is possible under the control of management control system and/or according to set power transmission standard implementation by direct-current grid to exchange micro-capacitance sensor power transmission or by exchange micro-capacitance sensor to direct-current grid power transmission；
Exchange grid-connecting apparatus, mainly it is made up of with exchanging switching device interconnective exchange grid-connected converter, described exchange switching device can be under the control of management control system and/or according to the connection imposed a condition between connection or cut-out exchange micro-capacitance sensor and bulk power grid, described exchange grid-connected converter is two way convertor, it is possible under the control of management control system and/or according to set power transmission standard implementation by bulk power grid to exchange micro-capacitance sensor power transmission or by exchange micro-capacitance sensor to bulk power grid power transmission；
Described ac bus connects to be had or is not connected to AC load；
Described ac bus connects to be had or is not connected to distributed alternating current power supply.
2. V2G alternating current-direct current mixing micro-capacitance sensor power architecture as claimed in claim 1, it is characterised in that described distributed DC power includes distributed photovoltaic power generation system.
3. V2G alternating current-direct current mixing micro-capacitance sensor power architecture as claimed in claim 1, it is characterized in that described AC load includes alternating-current charging pile, described alternating-current charging pile is provided with electric motor car exchange discharge and recharge current transformer, one end of described electric motor car exchange discharge and recharge current transformer connects described ac bus, the other end connects the electric motor car interface having the charging pile interface kit with electric motor car, described electric motor car exchange discharge and recharge current transformer is two way convertor, discharge and recharge under the control of management control system or outside foundation can instruct AC charging or the alternating current discharge carrying out battery of electric vehicle.
4. V2G alternating current-direct current mixing micro-capacitance sensor power architecture as claimed in claim 3, it is characterized in that described AC load includes exchanging energy storage device, mainly it is made up of energy-storage battery group and exchange energy accumulation current converter, the energy-storage battery group of described exchange energy storage device connects described ac bus by described exchange energy accumulation current converter, described exchange energy accumulation current converter is two way convertor, it is possible to carry out AC charging or the alternating current discharge of energy-storage battery group under the control of management control system.
5. V2G alternating current-direct current mixing micro-capacitance sensor power architecture as claimed in claim 4, it is characterized in that described AC load includes changing electricity battery exchange charge and discharge device, it is provided with and changes electricity battery exchange discharge and recharge current transformer, described one end changing electricity battery exchange discharge and recharge current transformer connects described ac bus, the other end connect have can connect electric motor car change electricity battery change electricity battery interface apparatus, the described electricity battery exchange discharge and recharge current transformer that changes is two way convertor, or electric motor car can be carried out according to outside discharge and recharge instruction under the control of management control system and change the AC charging of electric battery.
6. the V2G alternating current-direct current mixing micro-capacitance sensor power architecture as described in any one in claim 1-5, it is characterized in that described management control system includes master control set and is arranged at described direct-current grid and the described some detection devices for obtaining detection signal exchanged in micro-capacitance sensor, described master control set communicates to connect with each described detection device, the detection signal being derived from described detection device is analyzed computing, controls each current transformer and the duty of each switching device according to control strategy.
7. V2G alternating current-direct current mixing micro-capacitance sensor power architecture as claimed in claim 6, it is characterised in that described management control system is additionally provided with communication module and is communicated to connect by described communication module and remote server and/or carried out network data transmission.
8. the V2G alternating current-direct current mixing micro-capacitance sensor power architecture as described in any one in claim 1-5, it is characterised in that the energy-storage battery of described energy-storage battery group uses any one or more in lithium battery, lead carbon battery, ultracapacitor and flow battery.
9. the V2G alternating current-direct current mixing micro-capacitance sensor power architecture as described in any one in claim 1-5, it is characterised in that described direct current switching device and/or exchange switching device use corresponding direct current or the form of exchange gateway interface cabinet.
10. the V2G alternating current-direct current mixing micro-capacitance sensor power architecture as described in any one in claim 1-9, it is characterised in that:
The electric motor car of part or all of access system is changed electricity battery and is used for energy storage regulation, power consumption and power supply total amount in the net of place micro-capacitance sensor is regulated by controlling its charging and discharging, when the energy storage regulating power that electric motor car changes electricity battery disclosure satisfy that the energy storage regulation of micro-capacitance sensor requires, omit local energy storage device or do not omit the energy storage device of this locality, when being provided with energy storage device in micro-capacitance sensor, the described energy storage device of preferential employing carries out netting interior power consumption total amount and the regulation of power supply total amount；
The battery of electric vehicle of part or all of access system is used for energy storage regulation, power consumption and power supply total amount in the net of place micro-capacitance sensor is regulated by controlling its charging and discharging, the battery of electric vehicle being not used in energy storage regulation according to external command or foundation established standards is not used in energy storage regulation, the battery of electric vehicle that described foundation established standards is not used in energy storage regulation at least includes the battery of electric vehicle using fast mold filling formula to charge, when being provided with energy storage device in micro-capacitance sensor and/or the electric motor car for energy storage regulation changes electricity battery, preferential employing energy storage device and/or the electric motor car for energy storage regulation change electricity battery to be carried out netting interior power consumption total amount and the regulation of total amount of powering；
According to electrical safety and the economic principle of micro-capacitance sensor self, realize isolated power grid by switching on or off the connection with bulk power grid or be incorporated into the power networks,
Under isolated power grid state, economic principle according to micro-capacitance sensor self, by power consumption total amount and power supply total amount in energy storage capacity regulation net in net, make the power consumption total amount in net and total amount phase equilibrium of powering, and preferred arrangement electricity consumption in the following order: the first order is for be in the battery of electric vehicle filling state soon；Second order is to be in the battery of electric vehicle of trickle charge state；3rd order is that the electric motor car regulated for energy storage changes electricity battery；4th order is energy-storage battery group, meanwhile, set the electric motor car of certain proportion or quantity and change electricity battery and change electricity battery as the electric motor car being not used in energy storage regulation, and listed in the first order or second order of electricity consumption of giving priority in arranging for, or part lists the first order in, part lists the second order in；
Under the state of being incorporated into the power networks, economic principle according to microgrid self, it is that bulk power grid carries out frequency modulation and/or peak regulation by power consumption total amount in regulation net and power supply total amount, when because load is excessive, frequency declines or downward trend occurs bulk power grid, reduce micro-capacitance sensor and to the power consumption of bulk power grid or increase the micro-capacitance sensor power transmission amount to bulk power grid, when because load is too small, frequency raises or rising trend occurs bulk power grid, increase micro-capacitance sensor and to the power consumption of bulk power grid or reduce the micro-capacitance sensor power transmission amount to bulk power grid, when the peak of power consumption of bulk power grid, reduce micro-capacitance sensor and the power consumption of bulk power grid or increasing micro-capacitance sensor are added the power transmission amount to bulk power grid, when the low power consumption of bulk power grid, increase micro-capacitance sensor and to the power consumption of bulk power grid or reduce the micro-capacitance sensor power transmission amount to bulk power grid.
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