CN106099966B - A kind of distributed power grid peak regulation distribution system - Google Patents
A kind of distributed power grid peak regulation distribution system Download PDFInfo
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- CN106099966B CN106099966B CN201610691435.4A CN201610691435A CN106099966B CN 106099966 B CN106099966 B CN 106099966B CN 201610691435 A CN201610691435 A CN 201610691435A CN 106099966 B CN106099966 B CN 106099966B
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- power grid
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- power
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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
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
-
- 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
Abstract
A kind of distributed power grid peak regulation distribution system, comprising: distributed generation resource, bus, communication interaction system；The distributed generation resource is connected by bus with power grid, can provide electric energy to power grid by bus；The distributed generation resource also carries out information exchange by the communication interaction system and power distribution network, obtains the information of power grid realtime power and real-time load；The distributed generation resource includes centralized charging station, and the centralization charging station first carries out the scheduling in charging station, make it that power supply is only used as to power to power grid when energizing to the power grid.
Description
Technical field
The present invention relates to a kind of network distribution systems, more particularly, to a kind of distributed power grid peak regulation distribution system.
Background technique
Distributed power generation refers to that near user, small scale of installing is generated using renewable energy such as wind energy, solar energy
The generator unit of electric energy.Compared with traditional extensive centralization power generation, distributed power generation has lot of advantages.Firstly, distribution
Formula power supply consumes electric energy generally proximate to user on the spot, reduces the electric energy loss in power equipment investment and transmission process, preferably
Meet the power demand of social production and people's lives, improves the economy of system operation.
Distributed power generation have many advantages, such as land occupation less, small investment, energy-saving and environmental protection, construction period it is short, with energy-saving and emission-reduction pressure
Power increase and electric power notch expand, distributed power generation combined with bulk power grid be Future Development of Electric Power Industry important directions.But
It is that distributed generation grid-connected is easy to cause power grid unstable, especially the systems such as wind-powered electricity generation, solar power generation, output power are unstable
It is fixed, cause power grid to get worse in the short of electricity phenomenon of peak load period, adjusts the confession that power supply capacity deficiency has severely impacted system
The economic benefit of electricity quality and system.
As electric car largely puts into and uses, electric car can be used as Equivalent Distributed decline power supply participate in power grid tune
Degree reaches the peak regulation pressure for alleviating power grid peak time and the utilization rate for improving equipment for power transmission and distribution with this, to realize power grid
Economic and reliable operation.Development and electric car with electric car access network (Vehicle to Grid.V2G) technology
The market environment of scale application, electric power system design and operation will change distribution network operation when need to consider it is electronic
Automobile participates in the scheduling problem of system as equivalent energy storage device.It, can be with peak load shifting, moreover it is possible to make when electric car accesses power grid
For the backup power source for security of meeting an urgent need, the flexibility and reliability of operation of power networks are improved.
The technology of existing electric car access power distribution network is usually to need to energize in power grid peak load as unit of charging station
When, the automobile in addition to being necessarily required to charging, the electricity for the automobile that will be powered is supplied to power grid by two-way inversion system, and
The automobile that must be charged then continues to charge by power grid power supply.Therefore, charging station when being energized to power grid and meanwhile be used as power supply and
Load, there is the behaviors of power supply and charging to lead to electric energy due to the loss there are DC communication variation and apart from transmission
Waste.
Summary of the invention
The present invention provides a kind of distributed power grid peak regulation distribution system, can when charging station is powered to power grid peak load,
Only as power supply without generate load, thus avoid can loss.
As one aspect of the present invention, a kind of distributed power grid peak regulation distribution system is provided, comprising: distributed electrical
Source, bus, communication interaction system；The distributed generation resource is connected by bus with power grid, can be mentioned by bus to power grid
For electric energy；The distributed generation resource also carries out information exchange by the communication interaction system and power distribution network, and it is real-time to obtain power grid
The information of power and real-time load；The distributed generation resource includes centralized charging station, and the centralization charging station can be used
It charges, and can also be powered to the power grid by bus in movable distributive energy storage device；The centralization is filled
Power station further includes the first bus and interior second bus of standing in standing；The movable distributive energy storage device is female by station first
Line is connected with power grid bus；In the station the second bus and each movable distributive energy storage device pass through respectively first switch,
Transformer and second switch are connected, the first switch and transformer series, the second switch and first switch and change
Depressor is in parallel；The centralization charging station further includes control system, when centralized charging station needs to power to power grid, the control
System processed proceeds as follows: (1) according to the real time status of the movable distributive energy storage device, determination is charged
Movable distributive energy storage device and with its match can be used in power supply movable distributive energy storage device；(2) break
Open the movable distributive energy storage device to charge and can be used in power supply movable distributive energy storage device with
The connection of first bus in standing；(3) first switch for disconnecting the movable distributive energy storage device to charge, is closed institute
State the second switch of the movable distributive energy storage device to charge；(4) movable distributive that can be powered described in closure
The first switch of energy storage device, the second switch for the movable distributive energy storage device that can be powered described in disconnection.
Preferably, the movable distributive energy storage device includes electric car.
Preferably, the distributed generation resource further includes Wind turbines, photovoltaic cell, flywheel energy storage or the energy storage electricity that draws water
It stands.
Preferably, for the centralized charging station according to the realtime power and real-time load information of power grid, determination is to utilize
Grid charging is still powered to power grid.
Preferably, the transformer is used to for output voltage being increased to 1.15 to 1.2 times of input voltage.
Preferably, the second bus passes through DC distribution in the station.
Preferably, the movable distributive energy storage device includes input equipment, can be inputted by the input equipment
The expectation of the movable distributive energy storage device is charged the end time；The movable distributive energy storage device further includes electricity
Monitoring device is measured, for monitoring the remaining capacity in its energy storage device；The control system is stored up according to each movable distributive
Can device remaining capacity and expect the charging end time, determine the movable distributive energy storage device that charges with
And the movable distributive energy storage device that can be used in power supply matched with it.
Preferably, the control system determines the movable distributive energy storage device to charge according to following manner
And the movable distributive energy storage device that can be used in power supply matched with it: (1) according to each movable distributive energy storage
The real time electrical quantity of device determines time Tci needed for it uninterruptedly charges to quota；(2) leisurely and comfortable time Tki=Tf- is determined
Tci, wherein Tf=Te-Td, Tf indicate to expect the difference of charging end time Te and current time Td；(3) determination needs to carry out
The set of the movable distributive energy storage device of charging: leisurely and comfortable time Tki is ranked up, and Tki is less than first time threshold
Such as 15 minutes movable distributive energy storage devices are determined as the movable distributive energy storage device to charge；(4)
Be determined to the set of movable distributive energy storage device being powered: selection real time electrical quantity is greater than the removable of power threshold
Wherein Tki is greater than second time threshold such as 45 minutes packaged type distributed energy storage devices by formula distributed energy storage device,
Set as the movable distributive energy storage device for being able to carry out power supply；(5) it is determined to the removable distribution being powered
Expectation power-on time Tqi=α Tki/3 of each packaged type distributed energy storage device in the set of formula energy storage device, wherein α be
Correction factor can be determined for correcting the inefficient of power-on time and charging time by test, or use a guarantor
Keep value such as 0.8；(6) it will be arranged from big to small in the set of the movable distributive energy storage device to charge according to Tci
Column, for the movable distributive energy storage device that charges from the movable distributive energy storage device for being able to carry out power supply
Set in selection Tqi matched greater than the movable distributive energy storage device for being able to carry out power supply of its Tci.
Detailed description of the invention
Fig. 1 is the system schematic of the embodiment of the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.Moreover, answering
Work as understanding, the feature not mutual exclusion of various embodiments described herein, and can be combined and transformation mistake various
Exist in journey.
The distributed power grid peak regulation distribution system of the embodiment of the present invention, referring to Fig. 1, including electric automobile charging station 10,
It is connected by bus B with power grid 30.Power grid 30 is connected with load, for providing electric power to network load.Power grid 30 can also be set
Other distributed generation resources are set, such as Wind turbines, photovoltaic cell, flywheel energy storage or the energy-accumulating power station that draws water.Electric automobile charging station
10 also carry out information exchange by communication interaction system and power grid 30, to obtain 30 realtime power of power grid and real-time load
Information, according to the realtime power of power grid 30 and real-time load information, determination is to be charged using power grid 30 or supplied to power grid 30
Electricity.
Electric automobile charging station 10 is arranged inside first in station for charging for the electric car 11 driven into it
The bus B1 and interior second bus B2 that stands.Electric car 11 is connected by the first bus B1 in standing with power grid bus B.Second in standing
Bus B2 is that the electric car 11 in DC distribution, with electric automobile charging station 10 passes through first switch 12, transformer respectively
13 and second switch 14 be connected.The second bus B2 may include two lines road in standing, the power electric of distribution and electric car 11
The positive grade and cathode in pond are connected.Wherein, first switch 12 is connected with transformer 13, second switch 14 and first switch 12 and
Transformer 13 is in parallel.Wherein transformer 13 can boost for inputting voltage therein, and input voltage is upgraded to defeated after boosting
Enter 1.15 to 1.20 times of voltage.
Electric automobile charging station 10 carries out information exchange by communication interaction system and power grid 30, so that it is real to obtain power grid 30
When power and real-time load information, according to the realtime power of power grid 30 and real-time load information, determination is using power grid
30 chargings are still powered to power grid 30.When determining that electric automobile charging station 10 needs to power to power grid, electric automobile charging station
Control system in 10 proceeds as follows: (1) according to the real time status of each electric car 11 of electric automobile charging station 10,
The electric car 11 that can be used in power supply for determining the electric car 11 to charge and being matched with it；(2) disconnecting needs
The electric car 11 that charges and the electric car 11 that can be used in power supply and in standing the first bus B1 connection；(3)
The first switch 12 of the electric car 11 to charge is disconnected, be closed the electric car 11 to charge second opens
Close 14；(4) closure can be used in the first switch 12 of the electric car 11 of power supply, disconnect the electric car 11 that can be used in power supply
Second switch 14.
Wherein, electric car 11 includes input equipment and electric quantity monitoring device, can be inputted by input equipment electronic
The expectation of automobile 11 is charged the end time.Electric quantity monitoring device is used to monitor the remaining capacity in 11 energy storage device of electric car.
Remaining capacity and expectation charging end time of the control system of electric automobile charging station 10 according to each electric car 11, really
The electric car 11 to charge calmly and the electric car 11 that can be used in power supply matched with it.
Specifically, electric car 11 that control system charges according to following manner and with its match can
Electric car 11:(1 for power supply) according to the real time electrical quantity of each electric car 11, determine that it uninterruptedly charges to quota institute
The time Tci needed；(2) leisurely and comfortable time Tki=Tf-Tci is determined, wherein Tf=Te-Td, Tf indicates to expect the charging end time
The difference of Te and current time Td；(3) it determines the set of the electric car 11 to charge: leisurely and comfortable time Tki is carried out
Tki is less than removable point that such as 15 minutes electric cars of first time threshold 11 are determined as charging by sequence
Cloth energy storage device；(4) be determined to the set of electric car 11 being powered: selection real time electrical quantity is greater than power threshold
Electric car 11, power threshold can be such as 80% rated capacity；Wherein such as 45 points of second time threshold will be greater than by Tki
The electric car 11 of clock, the set as the electric car 11 for being able to carry out power supply；(5) it is determined to the electronic vapour being powered
Expectation power-on time Tqi=α Tki/3 of each electric car 11 in the set of vehicle 11, wherein α is correction factor, is supplied for correcting
The inefficient of electric time and charging time, α can be determined by test, or use a conservative value such as 0.8；(6) will
Arranged from big to small in the set of electric car 11 to charge according to Tci, for it is each charge it is electronic
Automobile 11 selects Tqi to be able to carry out the electronic of power supply greater than its Tci from the set of electric car 11 for being able to carry out power supply
Automobile 11 is matched.
After the electricity of the electric car 11 to charge reaches its specified electric quantity, it is disconnected and interior second bus of standing
The connection of B2 waits 11 user of electric car to be driven away.Reach in the power-on time for the electric car 11 for being able to carry out power supply
After it expects power-on time Tqi, the connection of itself and the interior second bus B2 that stands is disconnected, it is connected again with the interior first bus B1 that stands
It connects.
Above-mentioned technical proposal through the invention determines internal charge in charging station when energizing to power grid
Electric car, directly DC charging is given by the second bus in charging station, so that charging station be made only to be used as electricity when energizing
Source reduces DC communication variation and the loss apart from transmission.
The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, although referring to above-described embodiment pair
The present invention is described in detail, it should be understood by those ordinary skilled in the art that: still can be to of the invention specific
Embodiment is modified or replaced equivalently, and without departing from any modification of spirit and scope of the invention or equivalent replacement,
It is intended to be within the scope of the claims of the invention.
Claims (5)
1. a kind of distributed power grid peak regulation distribution system, comprising: distributed generation resource, bus, communication interaction system；The distribution
Power supply is connected by bus with power grid, can provide electric energy to power grid by bus；The distributed generation resource also passes through described
Communication interaction system and power distribution network carry out information exchange, obtain the information of power grid realtime power and real-time load；Its feature exists
In: the distributed generation resource includes centralized charging station, and the centralization charging station can be used in movable distributive energy storage dress
It sets and charges, and can also be powered by bus to the power grid；The movable distributive energy storage device includes electronic
Automobile；The centralization charging station further includes the first bus and interior second bus of standing in standing；The movable distributive energy storage
Device is connected by the first bus in standing with power grid bus；Second bus and each movable distributive energy storage device in the station
It is connected respectively by first switch, transformer and second switch, the first switch and transformer series, the second switch
With first switch and transformers connected in parallel；It is described centralization charging station further include control system, when centralized charging station need to
When power grid is powered, the control system is proceeded as follows: (1) according to the real-time shape of the movable distributive energy storage device
Condition, removable point for can be used in power supply for determining the movable distributive energy storage device to charge and being matched with it
Cloth energy storage device；(2) it disconnects the movable distributive energy storage device to charge and can be used in power supply
The connection of movable distributive energy storage device and interior first bus of standing；(3) the removable distribution charged is disconnected
The first switch of formula energy storage device is closed the second switch of the movable distributive energy storage device to charge；(4)
The first switch for the movable distributive energy storage device that can be powered described in closure, the removable distribution that can be powered described in disconnection
The second switch of formula energy storage device.
2. distributed power grid peak regulation distribution system according to claim 1, it is characterised in that: the distributed generation resource also wraps
Include Wind turbines, photovoltaic cell, flywheel energy storage or the energy-accumulating power station that draws water.
3. distributed power grid peak regulation distribution system according to claim 2, it is characterised in that: the centralization charging station root
According to the realtime power and real-time load information of power grid, determination is powered using grid charging or to power grid.
4. distributed power grid peak regulation distribution system according to claim 3, it is characterised in that: the transformer is used for will be defeated
It is 1.15 to 1.2 times of input voltage that voltage, which increases, out.
5. distributed power grid peak regulation distribution system according to claim 4, it is characterised in that: the second bus is logical in the station
Cross DC distribution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610691435.4A CN106099966B (en) | 2016-08-21 | 2016-08-21 | A kind of distributed power grid peak regulation distribution system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610691435.4A CN106099966B (en) | 2016-08-21 | 2016-08-21 | A kind of distributed power grid peak regulation distribution system |
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| CN106099966A CN106099966A (en) | 2016-11-09 |
| CN106099966B true CN106099966B (en) | 2019-03-01 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101958567A (en) * | 2010-10-25 | 2011-01-26 | 东南大学 | Electromobile charging station system with energy storing device and control method thereof |
| CN201898359U (en) * | 2010-12-17 | 2011-07-13 | 上海市电力公司 | Movable energy storage system |
| CN204391761U (en) * | 2014-12-08 | 2015-06-10 | 深圳供电局有限公司 | Direct-flow distribution system is pressed in a kind of flexibility |
| CN204669058U (en) * | 2015-06-12 | 2015-09-23 | 张洪亮 | A kind of based on wind-light storage from the/wireless charging system for electric automobile that generates electricity by way of merging two or more grid systems |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104253464B (en) * | 2013-06-28 | 2017-05-03 | 比亚迪股份有限公司 | System for mutual charging of electric vehicles and charging connector |
-
2016
- 2016-08-21 CN CN201610691435.4A patent/CN106099966B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101958567A (en) * | 2010-10-25 | 2011-01-26 | 东南大学 | Electromobile charging station system with energy storing device and control method thereof |
| CN201898359U (en) * | 2010-12-17 | 2011-07-13 | 上海市电力公司 | Movable energy storage system |
| CN204391761U (en) * | 2014-12-08 | 2015-06-10 | 深圳供电局有限公司 | Direct-flow distribution system is pressed in a kind of flexibility |
| CN204669058U (en) * | 2015-06-12 | 2015-09-23 | 张洪亮 | A kind of based on wind-light storage from the/wireless charging system for electric automobile that generates electricity by way of merging two or more grid systems |
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| CN106099966A (en) | 2016-11-09 |
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Effective date of registration: 20181219 Address after: 528231 3rd Floor, No. 7, Southeast Second Road, Dali Town, Nanhai District, Foshan City, Guangdong Province Applicant after: Guangdong Xingdali Construction Engineering Co., Ltd. Address before: 215124 46 Xingguo Road, Guo Xiang, Wuzhong District, Suzhou, Jiangsu Applicant before: Zhao Dongxu |
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