CN207910490U - A kind of AC microgrids and direct-current micro-grid group network system suitable for high-power wind turbine consumption - Google Patents
A kind of AC microgrids and direct-current micro-grid group network system suitable for high-power wind turbine consumption Download PDFInfo
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- CN207910490U CN207910490U CN201820027626.5U CN201820027626U CN207910490U CN 207910490 U CN207910490 U CN 207910490U CN 201820027626 U CN201820027626 U CN 201820027626U CN 207910490 U CN207910490 U CN 207910490U
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Abstract
A kind of AC microgrids and direct-current micro-grid group network system suitable for high-power wind turbine consumption, including：One alternating current-direct current microgrid mixed networking system, at least one wind power plant, at least one large-capacity power converter, at least one step-up transformer, an ac bus I, a wind-powered electricity generation convey special line.The wind power plant connects large-capacity power converter, large-capacity power converter connects step-up transformer, step-up transformer connects ac bus I, the wind-powered electricity generation that the wind power plant is sent out by large-capacity power converter, step-up transformer processing after be connected with ac bus I；The beginning that the ac bus I conveys special line with wind-powered electricity generation is connected；The end of wind-powered electricity generation conveying special line is connected with each AC microgrids unit in alternating current-direct current microgrid mixed networking system and direct-current micro-grid unit, and the system-level control centre is connected with each AC microgrids unit and each direct-current micro-grid unit.It is big that the utility model solves the problems, such as that the consumption of high-power wind turbine difficulty, wind-powered electricity generation networking influence to influence power grid impact when big, electric vehicle accesses power grid on a large scale on system shock.
Description
Technical field
The utility model belongs to micro-capacitance sensor technical field, and in particular to a kind of exchange suitable for high-power wind turbine consumption is micro-
Net and direct-current micro-grid group network system.
Background technology
The global problems such as energy crisis, greenhouse effects, atmosphere pollution, expedite the emergence of and pushed new energy power generation technology and with
The appearance and development of the ev industry of electricity generation oil.The development and utilization of clean reproducible energy and the development of electric vehicle
With it is universal, paid attention to by various countries, majority state has also been put into effect and generation of electricity by new energy and the relevant policy of electric vehicle, and core is thought
Think to be the development for guiding generation of electricity by new energy and electric vehicle, tradition is replaced with the wind-force that there are no pollution to the environment, photovoltaic generation
Thermal power generation substitutes conventional fuel oil automobile with the electric vehicle of zero-emission, be finally energy crisis, greenhouse effects, air it is dirty
The solution of the global problems such as dye is made an effort.However, during renewable energy power generation and electric vehicle industry development,
Show numerous urgent problems to be solved.For wind-power electricity generation, wind power plant generated output grade is generally higher, and wind-powered electricity generation has
Intermittence, high-power wind turbine certainly will cause greater impact to influence electric system when networking, this results in wind-powered electricity generation to abandon electric rate comparing
Height, so, how high-power wind turbine is dissolved, become as a global problem, and wind electricity digestion problem has become and restricts me
The maximum stumbling-block of state's wind-powered electricity generation healthy and sustainable development there is no good wind electricity digestion measure at present for the problem.With regard to electronic vapour
For vehicle, remove outside technical bottleneck and the mating charging and conversion electric facility construction problem of electric vehicle itself, electric vehicle enters on a large scale
When net, also can generate greater impact to electric system influences, and proposes new requirement to power distribution network capacity and electricity generation system capacity,
For the problem, conventional technique scheme is to carry out upgrading or dynamic compatibilization to power transmission cable, and preferable technical side
Case is construction exchange micro-capacitance sensor or direct-current grid, distributed power generation is combined with electric vehicle charging and conversion electric, on-site elimination light
The electric energy that volt power generation and other distributed power generations are provided influences the impact of power grid to mitigate electric automobile load, however, not
By being exchange micro-capacitance sensor or direct-current grid, it is big that single micro-capacitance sensor runs small inertia, poor robustness, power supply characteristic difference,
Do not have high-power wind turbine digestion capability, it is difficult to the problem of stabilizing wind power fluctuation.
Invention content
For deficiencies of the prior art, the utility model is to solve the consumption of high-power wind turbine difficulty, wind-powered electricity generation networking
System shock is influenced to influence big problem to power grid impact when big, electric vehicle accesses power grid on a large scale, proposes a kind of be applicable in
In the AC microgrids and direct-current micro-grid group network system of high-power wind turbine consumption, micro-capacitance sensor unit and direct current will be exchanged in certain space
Microgrid unit, which concentrates in together, is scheduled management, then dispersion consumption high-power wind turbine, avoids high-power wind turbine from concentrating grid-connected
On power grid formed greater impact influence, while using system multi-source and multilayer scheduling and electric vehicle charging and conversion electric stake can
Control property, flexibly controls system, it is ensured that system self-energy dynamic equilibrium.
The technical solution that the utility model is taken is：
A kind of AC microgrids and direct-current micro-grid group network system suitable for high-power wind turbine consumption, including：
One alternating current-direct current microgrid mixed networking system,
At least one wind power plant,
At least one large-capacity power converter,
At least one step-up transformer,
One ac bus I,
One wind-powered electricity generation conveys special line；
The alternating current-direct current microgrid mixed networking system, including：
At least one AC microgrids unit,
At least one direct-current micro-grid unit,
One system-level control centre；System-level control centre is for coordinating each microgrid unit consumption generation of electricity by new energy work(
The ratio of rate, is mainly made of communication module and data processing module, receives the state of each microgrid unit by communication module
Amount, then calculate by data processing module the dispatch command of each microgrid unit under current state, finally by communication module by this
A little dispatch commands are transmitted to microgrid unit.
The wind power plant connects large-capacity power converter, and large-capacity power converter connects step-up transformer, and boosting becomes
Depressor connect ac bus I, the wind-powered electricity generation that the wind power plant is sent out by large-capacity power converter, step-up transformer processing after
It is connected with ac bus I；
The beginning that the ac bus I conveys special line with wind-powered electricity generation is connected；The end of the wind-powered electricity generation conveying special line and friendship are straight
Each AC microgrids unit in stream microgrid mixed networking system is connected with direct-current micro-grid unit, the system-level control centre
It is connected with each AC microgrids unit and each direct-current micro-grid unit.
The AC microgrids unit includes：
One step-down transformer,
One exchange being made of two breaker/switches and an AC/AC converter, a two-way AC/AC converter
Microgrid cell scheduling center,
One ac bus II,
At least one distributed generation unit,
At least one AC load,
At least two DC/AC converters,
At least two two-way AC/DC converters,
At least one AC/DC converters,
At least one fuel cell,
At least one photovoltaic generation unit,
At least one energy-storage system,
At least one electric vehicle charge and discharge stake,
At least one DC load；
The end of the wind-powered electricity generation conveying special line is connected with the high-pressure side of step-down transformer；The step-down transformer it is low
Pressure side is connected with the first breaker/switch at AC microgrids cell scheduling center；The other side of first breaker/switch
It is connected with the high-pressure side of AC/AC converters；The low-pressure side of the AC/AC converters is connected with ac bus II；
Second breaker/switch the one end at the AC microgrids cell scheduling center is connected with power grid, and the second breaker/
The switch other end is connected with two-way AC/AC converters, the other side and II phase of ac bus of the two-way AC/AC converters
Even；
The fuel cell is connected by the first DC/AC converters with ac bus II；
The photovoltaic generation unit is connected by the 2nd DC/AC converters with ac bus II；
The energy-storage system is connected by the first two-way AC/DC converters with ac bus II；
The electric vehicle charging and conversion electric stake is connected by the second two-way AC/DC converters with ac bus II；
The DC load is connected by AC/DC converters with ac bus II；
The distributed generation unit is connected with ac bus II；
The AC load is connected with ac bus II.
The direct-current micro-grid unit includes：
One step-down transformer,
One direct current being made of two breaker/switches and an AC/DC converter, a two-way AC/DC converter
Microgrid cell scheduling center,
One DC bus,
At least one distributed generation unit,
At least one AC load,
At least one AC/DC converters,
At least one DC/AC converters,
At least two DC/DC converters,
At least two two-way DC/DC converters,
At least one fuel cell,
At least one photovoltaic generation unit,
At least one energy-storage system,
At least one electric vehicle charge and discharge stake,
At least one DC load；
The end of the wind-powered electricity generation conveying special line is connected with the high-pressure side of step-down transformer；The step-down transformer it is low
Pressure side is connected with the third breaker/switch at direct-current micro-grid cell scheduling center；The other side of the third breaker/switch
It is connected with the exchange side of AC/DC converters；The DC side of the AC/DC converters is connected with DC bus；The direct current
Four breakers/switch the one end at microgrid cell scheduling center is connected with power grid, four breakers/switch other end with it is two-way
The exchange of AC/DC converters, which is surveyed, to be connected, and the DC side of the two-way AC/DC converters is connected with DC bus；
The fuel cell is connected by the first DC/DC converters with DC bus；
The photovoltaic generation unit is connected by the 2nd DC/DC converters with DC bus；
The energy-storage system is connected by the first two-way DC/DC converters with DC bus；
The electric vehicle charging and conversion electric stake is connected by the second two-way DC/DC converters with DC bus；
The DC load is connected with DC bus；
The distributed generation unit is connected by AC/DC converters with DC bus；
The AC load is connected by DC/AC converters with DC bus.
It accesses and hands over after the processing that the electric energy that the wind power plant is sent out passes through large-capacity power converter and step-up transformer
Busbar I is flowed, then convey special line by wind-powered electricity generation is transmitted to each friendship that alternating current-direct current microgrid mixed networking system is included by electric energy
It flows in microgrid unit or direct-current micro-grid unit；The system-level control centre is according in alternating current-direct current microgrid mixed networking system
Energy supply/demand in each AC microgrids unit and direct-current micro-grid unit plans wind electricity digestion path and dispatches electric energy distribution；
The wind-powered electricity generation conveying special line is sent to the energy of AC microgrids unit, if needing incoming transport microgrid unit, first passes through decompression
Transformer pressure-reducing processing, then by controlling the breaker/switch being connected with step-down transformer, wind-powered electricity generation input is received, and continue to lead to
After crossing the AC/AC converters progress power converter in AC microgrids cell scheduling center, final incoming transport busbar II；Described
The energy that wind-powered electricity generation conveying special line is sent to direct-current micro-grid unit first passes through step-down transformer if direct-current micro-grid unit need to be accessed
Decompression is handled, then by controlling the breaker/switch being connected with step-down transformer, receives wind-powered electricity generation input, and continue through direct current
After AC/DC converters in microgrid cell scheduling center carry out power converter, DC bus is finally accessed；The AC microgrids
Cell scheduling centrally through breaker/switch for being connected with bulk power grid of control come control AC microgrids unit be incorporated into the power networks or orphan
Island is run；The direct-current micro-grid cell scheduling controls direct current centrally through breaker/switch that control is connected with bulk power grid
Microgrid unit be incorporated into the power networks or islet operation.
The electric energy that wind power plant is sent out carries out power converter by large-capacity power converter and step-up transformer boosts it
Afterwards, ac bus I is concentrated on, conveying special line by wind-powered electricity generation send each AC microgrids in best friend's direct-current micro-grid mixed networking system
In unit and direct-current micro-grid unit；It is sent to the energy of each AC microgrids unit for wind-powered electricity generation conveying special line, first passes through decompression and becomes
Depressor is depressured, and then whether incoming transport microgrid unit disconnects decision wind-powered electricity generation if not needing incoming transport microgrid unit
Breaker/the switch being connected with step-down transformer, if desired incoming transport microgrid unit are then closed and to be connected with step-down transformer
Breaker/switch, by the incoming transport mother after the wind-powered electricity generation energy of decompression processing carries out power converter using AC/AC converters
In line II, electric energy is provided for AC microgrids unit as one of power supply；It is micro- that each direct current is sent to for wind-powered electricity generation conveying special line
The energy of net unit first passes through step-down transformer and is depressured, and then whether decision wind-powered electricity generation accesses direct-current micro-grid unit, if being not required to
Direct-current micro-grid unit is accessed, then disconnects the breaker/switch being connected with step-down transformer, if desired accesses direct-current micro-grid list
Member is then closed the breaker/switch being connected with step-down transformer, will become using AC/DC by the wind-powered electricity generation energy of decompression processing
Parallel operation accesses after carrying out power converter in DC bus, and electric energy is provided for direct-current micro-grid unit as one of power supply.It is just each
For a AC microgrids unit, in addition to the electric energy of wind-powered electricity generation conveying special line transmission, AC microgrids unit can be from power grid, distributed hair
Electric unit, fuel cell, photovoltaic generation unit, energy-storage system and charge and discharge stake obtain electric energy, are in AC microgrids unit
Various AC loads and DC load power supply, and when AC microgrids unit self-energy is for far excessively asking, two-way AC/AC can be passed through
Converter feeds back to energy superfluous in AC microgrids unit after power converter in bulk power grid；With regard to each direct-current micro-grid list
For member, in addition to the electric energy of wind-powered electricity generation conveying special line transmission, direct-current micro-grid unit can be from power grid, distributed generation unit, fuel
Battery, photovoltaic generation unit, energy-storage system and charge and discharge stake obtain electric energy, are the various AC loads in direct-current micro-grid unit
It powers, and when direct-current micro-grid unit self-energy is for far excessively asking, can will be exchanged by two-way AC/DC converters with DC load
Superfluous energy is fed back to after power converter in bulk power grid in microgrid unit.
Compared to existing micro-capacitance sensor technical solution, a kind of exchange suitable for high-power wind turbine consumption of the utility model is micro-
Net and direct-current micro-grid group network system, have the following advantages that：
1, the utility model by within the scope of certain space multiple AC microgrids units and multiple direct-current micro-grid units carry out
Networking, centralized dispatching, dispersion consumption high-power wind turbine, while reducing or avoiding wind-powered electricity generation and the when of networking is concentrated to rush electric system
Hit influence.
2, the utility model sets wind-powered electricity generation conveying special line, implements special line and specially controls, can be according to the energy supply and demand in each microgrid unit
Situation selectively accesses wind-powered electricity generation, improves the controllability of system.
3, the utility model uses multi-source and multilayer scheduling controlling pattern, by low power distributed power generation on-site elimination and
The dispersion consumption of high-power wind turbine is combined, while taking into account and stabilizing the influence that electric vehicle networks on a large scale, moreover it is possible to fill
Divide and enhances the reliable of system using the controllability of electric vehicle charging and conversion electric stake to maintain the dynamic equilibrium of internal system energy
Property.
4, compared with existing exchange micro-capacitance sensor, direct-current grid or the single micro-capacitance sensor of alternating current-direct current mixing, this practicality is new
Type suggest plans by within the scope of certain space AC microgrids unit and direct-current micro-grid unit carry out networking, if wind-powered electricity generation convey special line
It carries out special line specially to control, powerful wind-powered electricity generation is carried out and concentrates exploitation, system-level macro adjustments and controls and microgrid unit are taken in dispersion consumption
The multilayer dispatch coordination control that the fine well-balanced adjustment of grade is combined, using more in each AC microgrids unit or direct-current micro-grid unit
Source power supply and energy-storage system and controllable electric vehicle charge and discharge stake load, it is ensured that the dynamic equilibrium of system capacity improves new energy
The utilization rate in source, and make every effort to suppress or eliminate wind electricity digestion and when electric vehicle accesses on a large scale influences the impact of system.
5, the utility model by within the scope of certain space multiple AC microgrids units and multiple direct-current micro-grid units carry out
Networking, centralized dispatching, dispersion consumption high-power wind turbine.
Description of the drawings
Fig. 1 is a kind of AC microgrids and direct-current micro-grid group network system one suitable for high-power wind turbine consumption of the utility model
The structural schematic diagram of embodiment.
Fig. 2 is the structure of one example of AC microgrids unit in the submitted direct-current micro-grid mixed networking system of the utility model
Schematic diagram.
Fig. 3 is the structure of one example of direct-current micro-grid unit in the submitted direct-current micro-grid mixed networking system of the utility model
Schematic diagram.
Specific implementation mode
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
As shown in Figure 1, a kind of AC microgrids and direct-current micro-grid group network system suitable for high-power wind turbine consumption, including one
A alternating current-direct current microgrid mixed networking system 1, at least one wind power plant 2, at least one large-capacity power converter 3 are at least one
Step-up transformer 4, an ac bus I, 5, wind-powered electricity generation convey special line 6；The alternating current-direct current microgrid mixed networking system 1,
Including at least one AC microgrids unit 8, at least one direct-current micro-grid unit 9, a system-level control centre 7；The wind
It is connected with ac bus I 5 after the processing that the wind-powered electricity generation that electric field 2 is sent out passes through large-capacity power converter 3 and step-up transformer 4；Institute
The beginning that the ac bus I 5 stated conveys special line 6 with wind-powered electricity generation is connected；The end of the wind-powered electricity generation conveying special line 6 and alternating current-direct current microgrid
Each AC microgrids unit 8 in mixed networking system 1 is connected with direct-current micro-grid unit 9；The system-level control centre 7 with
Each AC microgrids unit 8 is connected with each direct-current micro-grid unit 9.
AC microgrids unit 8 shown in Fig. 2 is exactly the AC microgrids unit 8 in alternating current-direct current microgrid mixed networking system 1
One exemplary construction schematic diagram, including first step-down transformer 10, one by breaker/switch 12, breaker/switch 13,
The AC microgrids cell scheduling center 11 of AC/AC converters 14, two-way AC/AC converters 15 composition, an ac bus II 16,
At least one first distributed generation unit 29, at least one first AC load 30, at least two DC/AC converters：First
DC/AC converters 17 and the 2nd DC/AC converters 19, at least two two-way AC/DC converters：First two-way AC/DC converters
22 and the second two-way AC/DC converter 24, at least one first AC/DC converters 27, at least one first fuel cell 18, until
Few first photovoltaic generation unit 21 for including photovoltaic module 20, at least one first energy-storage system 23, at least one power supply
First electric vehicle charge and discharge stake 26 of 25 charging and conversion electric of electrical automobile, at least one first DC load 28；The wind-powered electricity generation conveying
The end of special line 6 is connected with the high-pressure side of the first step-down transformer 10；The low-pressure side of first step-down transformer 10 and friendship
Breaker/the switch 12 for flowing microgrid cell scheduling center 11 is connected；The other side of the breaker/switch 12 becomes with AC/AC
The high-pressure side of parallel operation 14 is connected；The low-pressure side of the AC/AC converters 14 is connected with ac bus II 16；The exchange is micro-
13 one end of breaker/switch of net unit control centre 11 is connected with power grid 31, the other end and two-way 15 phase of AC/AC converters
Even；The other side of the two-way AC/AC converters 15 is connected with ac bus II 16；First fuel cell 18 passes through
First DC/AC converters 17 are connected with ac bus II 16；First photovoltaic generation unit 21 is converted by the 2nd DC/AC
Device 19 is connected with ac bus II 16；First energy-storage system 23 by the first two-way AC/DC converters 22 with exchange mother
Line II 16 is connected；The electric vehicle charging and conversion electric stake 26 passes through the second two-way AC/DC converters 24 and II 16 phase of ac bus
Even；First DC load 28 is connected by the first AC/DC converters 27 with ac bus II 16；First distribution
Formula generator unit 29 is connected with ac bus II 16；First AC load 30 is connected with ac bus II 16.Fig. 1 and figure
2 contact is that the wind-powered electricity generation that the wind-powered electricity generation in Fig. 1 conveys in special line 6 i.e. Fig. 2 conveys special line 6, with the first step-down transformer 10 in Fig. 2
It is connected；System call center 7 in Fig. 1 is connected with the AC microgrids cell scheduling center 11 in Fig. 2.
Direct-current micro-grid unit 7 shown in Fig. 3 is exactly the direct-current micro-grid unit 9 in alternating current-direct current microgrid mixed networking system 1
One exemplary construction schematic diagram, including second step-down transformer 32, one by breaker/switch 34, breaker/switch 35,
The direct-current micro-grid cell scheduling center 33 of 2nd AC/DC converters 36, two-way AC/DC converters 37 composition, a DC bus
38, at least one second distributed generation unit 50, at least one second AC load 52, at least one 3rd AC/DC transformation
Device 51, at least one DC/AC converters 53, at least two DC/DC converters：First DC/DC converters 39 and the 2nd DC/DC become
Parallel operation 41, at least two two-way DC/DC converters：First two-way DC/DC converters, 44 and second two-way DC/DC converters 46,
At least one second fuel cell 40, at least one the second photovoltaic generation unit 43 comprising photovoltaic module 42, at least one
Two energy-storage systems 45, at least one electric vehicle charge and discharge stake 48 for 47 charging and conversion electric of electric vehicle, at least one second direct current
Load 49；The end of the wind-powered electricity generation conveying special line 6 is connected with the high-pressure side of the second step-down transformer 32；Second decompression
The low-pressure side of transformer 32 is connected with the breaker/switch 34 at direct-current micro-grid cell scheduling center 33；Breaker/the switch
34 other side is connected with the exchange side of the 2nd AC/DC converters 36；The DC side of the 2nd AC/DC converters 36 with it is straight
Busbar 38 is flowed to be connected；35 one end of breaker/switch at the direct-current micro-grid cell scheduling center 33 is connected with power grid 31, another
The survey that exchanges with two-way AC/DC converters 37 is held to be connected；The DC side of the two-way AC/DC converters 37 and DC bus 38
It is connected；Second fuel cell 40 is connected by the first DC/DC converters 39 with DC bus 38；Second photovoltaic
Generator unit 43 is connected by the 2nd DC/DC converters 41 with DC bus 38；Second energy-storage system 45 passes through first
Two-way DC/DC converters 44 are connected with DC bus 38；The electric vehicle charging and conversion electric stake 48 is become by the second two-way DC/DC
Parallel operation 46 is connected with DC bus 38；Second DC load 49 is connected with DC bus 38；Described second is distributed
Generator unit 50 is connected by the 3rd AC/DC converters 51 with DC bus 38；Second AC load 52 passes through DC/AC
Converter 53 is connected with DC bus 38.Fig. 1 and Fig. 3 contact in Fig. 1 wind-powered electricity generation convey special line 6 i.e. Fig. 3 in wind-powered electricity generation it is defeated
Special line 6 is sent, is connected with the second step-down transformer 32 in Fig. 3；The direct-current micro-grid list in system call center 7 and Fig. 3 in Fig. 1
First control centre 33 is connected.
In conclusion a kind of AC microgrids and direct-current micro-grid suitable for high-power wind turbine consumption that the utility model is carried
Group network system by within the scope of certain space AC microgrids unit and direct-current micro-grid unit carry out networking, if wind-powered electricity generation convey special line into
Row special line is specially controlled, and is carried out powerful wind-powered electricity generation and is concentrated exploitation, and system-level macro adjustments and controls and microgrid cell level are taken in dispersion consumption
The multilayer dispatch coordination control that fine well-balanced adjustment is combined, utilizes the multi-source in each AC microgrids unit or direct-current micro-grid unit
Power supply and energy-storage system and controllable electric vehicle charge and discharge stake load allow system not only to have single exchange micro-capacitance sensor or direct current
Smooth intermittence energy output power that micro-capacitance sensor has, support power grid peak load shifting improve power quality, reduce power grid and expand
The advantages of appearance and infrastructure construction difficulty, enhancing system reliability, moreover it is possible to dissolve high-power wind turbine, and largely drop
The impact of system is influenced when low wind electricity digestion and electric vehicle access on a large scale.
The above-mentioned implementation example of the utility model is not to this only to illustrate the utility model example
The restriction of the embodiment of utility model.For those of ordinary skill in the art, on the basis of the above description also
Other various forms of variations and variation can be made.Here all embodiments can not be exhaustive.It is every to belong to this
The technical solution changes and variations that derived from of utility model still in the scope of protection of the utility model it
Row.
Claims (3)
1. a kind of AC microgrids and direct-current micro-grid group network system suitable for high-power wind turbine consumption, it is characterised in that including：One
A alternating current-direct current microgrid mixed networking system（1）,
At least one wind power plant（2）,
At least one large-capacity power converter（3）,
At least one step-up transformer（4）,
One ac bus I（5）,
One wind-powered electricity generation conveys special line（6）；
The alternating current-direct current microgrid mixed networking system（1）, including：
At least one AC microgrids unit（8）,
At least one direct-current micro-grid unit（9）,
One system-level control centre（7）；
The wind power plant（2）Connect large-capacity power converter（3）, large-capacity power converter（3）Connect step-up transformer
（4）, step-up transformer（4）Connect ac bus I（5）, the wind power plant（2）The wind-powered electricity generation sent out passes through large-capacity power converter
（3）, step-up transformer（4）Processing after with ac bus I（5）It is connected；
The ac bus I（5）Special line is conveyed with wind-powered electricity generation（6）Beginning be connected；The wind-powered electricity generation conveys special line（6）End with
Alternating current-direct current microgrid mixed networking system（1）In each AC microgrids unit（8）With direct-current micro-grid unit（9）It is connected, it is described
System-level control centre（7）With each AC microgrids unit（8）With each direct-current micro-grid unit（9）It is connected.
2. a kind of AC microgrids and direct-current micro-grid group network system suitable for high-power wind turbine consumption according to claim 1,
It is characterized in that：The AC microgrids unit（8）Including：
One the first step-down transformer（10）,
One by two breaker/switches and an AC/AC converter（14）, a two-way AC/AC converter（15）Composition
AC microgrids cell scheduling center（11）,
One ac bus II（16）,
At least one first distributed generation unit（29）,
At least one first AC load（30）,
At least two DC/AC converters,
At least two two-way AC/DC converters,
At least one first AC/DC converters（27）,
At least one first fuel cell（18）,
At least one first photovoltaic generation unit（21）,
At least one first energy-storage system（23）,
At least one first electric vehicle charge and discharge stake（26）,
At least one first DC load（28）；
The wind-powered electricity generation conveys special line（6）End and the first step-down transformer（10）High-pressure side be connected；First drop
Pressure transformer（10）Low-pressure side and AC microgrids cell scheduling center（11）The first breaker/switch（12）It is connected；It is described
The first breaker/switch（12）The other side and AC/AC converters（14）High-pressure side be connected；The AC/AC converters
（14）Low-pressure side and ac bus II（16）It is connected；
The AC microgrids cell scheduling center（11）The second breaker/switch（13）One end and power grid（31）It is connected, the
Two breakers/switch（13）The other end and two-way AC/AC converters（15）It is connected, the two-way AC/AC converters（15）'s
The other side and ac bus II（16）It is connected；
First fuel cell（18）Pass through the first DC/AC converters（17）With ac bus II（16）It is connected；
First photovoltaic generation unit（21）Pass through the 2nd DC/AC converters（19）With ac bus II（16）It is connected；
First energy-storage system（23）Pass through the first two-way AC/DC converters（22）With ac bus II（16）It is connected；
The electric vehicle charging and conversion electric stake（26）Pass through the second two-way AC/DC converters（24）With ac bus II（16）Phase
Even；
First DC load（28）Pass through the first AC/DC converters（27）With ac bus II（16）It is connected；
First distributed generation unit（29）With ac bus II（16）It is connected；
First AC load（30）With ac bus II（16）It is connected.
3. a kind of AC microgrids and direct-current micro-grid group network system suitable for high-power wind turbine consumption according to claim 1,
It is characterized in that：The direct-current micro-grid unit（9）Including：
One the second step-down transformer（32）,
One by two breaker/switches and a 2nd AC/DC converter（36）, a two-way AC/DC converter（37）Group
At direct-current micro-grid cell scheduling center（33）,
One DC bus（38）,
At least one second distributed generation unit（50）,
At least one second AC load（52）,
At least one 3rd AC/DC converters（51）,
At least one DC/AC converters（53）,
At least two DC/DC converters,
At least two two-way DC/DC converters,
At least one second fuel cell（40）,
At least one second photovoltaic generation unit（43）,
At least one second energy-storage system（45）,
At least one second electric vehicle charge and discharge stake（48）,
At least one second DC load（49）；
The wind-powered electricity generation conveys special line（6）End and the second step-down transformer（32）High-pressure side be connected；Second drop
Pressure transformer（32）Low-pressure side and direct-current micro-grid cell scheduling center（33）Third breaker/switch（34）It is connected；It is described
Third breaker/switch（34）The other side and the 2nd AC/DC converters（36）Exchange side be connected；2nd AC/
DC converters（36）DC side and DC bus（38）It is connected；The direct-current micro-grid cell scheduling center（33）It is the 4th disconnected
Road device/switch（35）One end and power grid（31）It is connected, four breakers/switch（35）The other end and two-way AC/DC converters
（37）Exchange survey and be connected, the two-way AC/DC converters（37）DC side and DC bus（38）It is connected；
Second fuel cell（40）Pass through the first DC/DC converters（39）With DC bus（38）It is connected；
Second photovoltaic generation unit（43）Pass through the 2nd DC/DC converters（41）With DC bus（38）It is connected；
Second energy-storage system（45）Pass through the first two-way DC/DC converters（44）With DC bus（38）It is connected；
The electric vehicle charging and conversion electric stake（48）Pass through the second two-way DC/DC converters（46）With DC bus（38）It is connected；
Second DC load（49）With DC bus（38）It is connected；
Second distributed generation unit（50）Pass through the 3rd AC/DC converters（51）With DC bus（38）It is connected；
Second AC load（52）Pass through DC/AC converters（53）With DC bus（38）It is connected.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108054783A (en) * | 2018-01-08 | 2018-05-18 | 三峡大学 | A kind of exchange microgrid and direct-current micro-grid group network system suitable for high-power wind turbine consumption |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108054783A (en) * | 2018-01-08 | 2018-05-18 | 三峡大学 | A kind of exchange microgrid and direct-current micro-grid group network system suitable for high-power wind turbine consumption |
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