CN207677451U - A kind of piconet networking system suitable for high-power wind turbine consumption - Google Patents
A kind of piconet networking system suitable for high-power wind turbine consumption Download PDFInfo
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- CN207677451U CN207677451U CN201820027048.5U CN201820027048U CN207677451U CN 207677451 U CN207677451 U CN 207677451U CN 201820027048 U CN201820027048 U CN 201820027048U CN 207677451 U CN207677451 U CN 207677451U
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Abstract
A kind of piconet networking system suitable for high-power wind turbine consumption, including：One piconet networking system, at least one wind power plant, at least one large-capacity power transformation system, an ac bus I, a wind-powered electricity generation convey special line；The piconet networking system, including：At least two microgrid units, a system-level control centre；Wind power plant is connected by large-capacity power transformation system with ac bus I, the ac bus I is connected with wind-powered electricity generation conveying special line, the wind-powered electricity generation conveying special line is connected with the microgrid unit that piconet networking system is included, and the system-level control centre is connected with each microgrid unit.The problems such as the utility model solves the consumption of high-power wind turbine difficulty, electric vehicle charging load proposes high request to distribution capacity and power generation capacity.
Description
Technical field
The utility model belongs to micro-capacitance sensor technical field, and in particular to a kind of microgrid group suitable for high-power wind turbine consumption
Net system.
Background technology
With increasingly deficient and science and technology the fast development of world energy sources, whole people's environmental protection consciousness is continuous in addition
It improves, the mankind are making great efforts to seek a kind of renewable cleaning green energy resource instead of energy such as oil, natural gases, and inexhaustible
Nexhaustible wind energy, become because having cleaning, pollution-free, renewable the advantages that currently most promising new energy it
One.Wind-powered electricity generation is recognized with government and street levels gradually intensification,《Renewable Energy Law》It is formal implementation, multinomial wind-powered electricity generation special project political affairs
The appearance of plan, wind-power electricity generation will be that the Energy restructuring in China makes tremendous contribution.However, wind generating technology developed
Cheng Zhong shows numerous urgent problems to be solved, as wind-power electricity generation have intermittence, and wind power plant generated output grade generally compared with
Height, individually wind-driven generator capacity has been up to 10MW at present, and high-power wind turbine certainly will cause compared with favourable opposition electric system when networking
It hits, has larger impact to peak load regulation network, power grid frequency modulation, network system stability and power quality etc., this also causes wind-powered electricity generation to be abandoned
Electric rate is relatively high.Therefore, how high-power wind turbine is dissolved, is urgent problem to be solved.For the problem, currently there is no very well
Wind electricity digestion measure.In addition, it is trend of the times that electric vehicle is universal on a large scale, a large amount of electric vehicle charging load access electricity
Net certainly will propose new requirement to current electric grid capacity and electricity generation system capacity, and for the problem, conventional technique scheme is
Upgrading or dynamic compatibilization are carried out to power transmission cable.In order to solve the consumption of high-power wind turbine difficulty and extensive electric vehicle pair
The big problem of electric network influencing, current preferable technical solution or resolving ideas are construction micro-capacitance sensors, by distributed power generation with it is electronic
Automobile charging and conversion electric is combined, and the electric energy that on-site elimination photovoltaic generation and various distributed power generations are provided is negative to mitigate electric vehicle
Lotus influences the impact of power grid.However, single micro-capacitance sensor operation inertia is small, poor robustness, power supply characteristic difference are big, do not have
Standby high-power wind turbine digestion capability, it is difficult to stabilize wind power fluctuation problem.
Invention content
For deficiencies of the prior art, the utility model is to solve the consumption of high-power wind turbine difficulty, electric vehicle
The problems such as load that charges proposes high request to distribution capacity and power generation capacity proposes a kind of suitable for the micro- of high-power wind turbine consumption
Micro-capacitance sensor unit in certain space is carried out networking by net group network system, increases power system capacity, and setting wind-powered electricity generation is defeated in group network system
Send special line, each microgrid unit can be according to its electric energy supply and demand actual conditions come whether regulating and controlling wind power integration, in this way, can not only be great Rong
It measures wind electricity digestion and support is provided, also advantageously improve the flexibility of networking self-energy dynamic equilibrium control, in addition, wind-powered electricity generation conveying is special
The wind-powered electricity generation energy of line transmission is not directly incorporated into power grid, but when drug on the market for system capacity, by the electric power of cross-straight-intersection
Bulk power grid is incorporated to after transformation again, this largely reduces influence and impact of the wind-electricity integration to electric system.
The technical solution that the utility model is taken is：
A kind of piconet networking system suitable for high-power wind turbine consumption, including：
One piconet networking system,
At least one wind power plant,
At least one large-capacity power transformation system, large-capacity power transformation system is mainly by large capacity AC/AC converters
Constitute, for realizing wind power-generating grid-connected task, specific implementation circuit can the optimum choice in existing scheme as needed,
Such as it is composed using 2 Three-Phase PWM Converters.
One ac bus I,
One wind-powered electricity generation conveys special line；
The piconet networking system, including：
At least two microgrid units,
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.
Wind power plant is connected by large-capacity power transformation system with ac bus I, and the ac bus I and wind-powered electricity generation conveying are special
Line is connected, and the wind-powered electricity generation conveying special line is connected with the microgrid unit that piconet networking system is included, the system-level control centre
It is connected with each microgrid unit.
The microgrid unit includes：
One step-down transformer,
One is made of two breaker/switches and an AC/DC converter and a two-way AC/DC converter
Microgrid cell scheduling center,
One ac bus II,
One DC bus,
At least one distributed generation unit,
At least one AC load,
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 being made of battery,
At least one electric vehicle charge and discharge stake,
At least one DC load；
The end of wind-powered electricity generation conveying special line is connected with the high-pressure side of step-down transformer；The low-pressure side of the step-down transformer with
First breaker/switch is connected, and the other end of first breaker/switch is connected with the exchange side of AC/DC converters, described
The DC side of AC/DC converters is connected with DC bus；
The second breaker that microgrid cell scheduling center is included/switch one end is connected with power grid, and the second breaker/
The switch other end is connected with ac bus II；
The exchange side of the two-way AC/DC converters at microgrid cell scheduling center is connected with ac bus II, two-way AC/
The DC side of DC converters is connected with DC bus；
The distributed generation unit is connected with ac bus II；
The AC load is connected with ac bus II；
The fuel cell is connected by the first DC/DC converters with DC bus；
The photovoltaic generation unit includes at least a photovoltaic module, and photovoltaic generation unit is converted by the 2nd DC/DC
Device is connected with DC bus；
The energy-storage system is connected by the first two-way DC/DC converters with DC bus；
The electric vehicle charge and discharge stake at least can be that an electric vehicle charges in the same time, electric vehicle charge and discharge
Electric stake is connected by the second two-way DC/DC converters with DC bus；
The DC load is connected with DC bus.
Then wind power plant conveys special line by electric energy by large-capacity power transformation system incoming transport busbar I by wind-powered electricity generation
It is transmitted in each microgrid unit in piconet networking system, then in the decompression and microgrid cell scheduling center for passing through step-down transformer
Breaker/switch control action and AC/DC converters power converter effect, be connected with ac bus II；It is described micro-
Net unit control centre is by controlling breaker/switch between microgrid unit and power grid, to control the grid-connected fortune of microgrid unit
Row or islet operation pattern.
Compared to existing micro-capacitance sensor technical solution, a kind of microgrid group suitable for high-power wind turbine consumption of the utility model
Net system, has the following advantages that：
1, the utility model improves power system capacity by network construction form, enhances system robustness, has the high-power wind of consumption
The ability of electricity, can maximally utilise wind energy, reduce wind power plant abandons wind rate.
2, the utility model setting wind-powered electricity generation conveys special line, and each microgrid unit can pass through according to its interior actual energy relation between supply and demand
Selectively by each microgrid unit of wind power integration, flexibility and the controllability of wind electricity digestion can be improved in breaker/switch.
3, the utility model wind-powered electricity generation is not directly incorporated into bulk power grid, but passes through friendship-when drug on the market for microgrid unit energy
It is incorporated to bulk power grid again after the power converter of directly-friendship, high-power wind turbine consumption can be greatly reduced on the impact of network system and influence.
4, the utility model uses multi-source and multi layer control pattern, and has ac bus and direct current mother in each microgrid unit concurrently
Line can facilitate AC/DC load and all kinds of distributed generation unit access systems, can alleviate electric vehicle charging and conversion electric load to electricity
The influence of net improves the robustness, controllability and stability of system.
5, multiple microgrid units in certain space are carried out networking by piconet networking system, and pass through system-level control centre
Each microgrid unit is adjusted and is controlled, power system capacity is not only increased, also improves the electric energy consumption energy of group network system
Power.For being sent to the wind-powered electricity generation energy of each microgrid unit, with it is existing exchange micro-capacitance sensor, direct-current grid or alternating current-direct current mixing it is micro-
Power grid is compared, and the utility model is suggested plans carries out networking by multiple microgrid units, if wind-powered electricity generation conveys special line, and wind-powered electricity generation is not direct
Bulk power grid is accessed, but carries out the transformation of cross-straight-intersection by converter, then big electricity is selectively accessing by breaker/switch
Net not only increases the controllability of system, also by the buffer action of DC link, during high-power wind turbine is dissolved in this way
Reduced levels are dropped on the impact of power grid and influence, improve the stability of system.In addition, the utility model suggested plans it is each
Microgrid unit has ac bus II and DC bus, and the access of each type load and various distributed generation units is all very strong,
This is conducive to the otherness and complementarity that make full use of multiple power sources powering mode, and the homeostasis energy regulation and control in system is allowed to become
Must be more flexible, energy utilization rate is also by higher.
Description of the drawings
Fig. 1 is that a kind of structure of one embodiment of piconet networking system suitable for high-power wind turbine consumption of the utility model is shown
It is intended to.
Fig. 2 is the structural schematic diagram of one example of micro- electric unit in the carried piconet networking system of the utility model.
Fig. 3 is the structural schematic diagram that the utility model large-capacity power transformation series unifies example.
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 piconet networking system suitable for high-power wind turbine consumption, including a piconet networking system
1, at least one voltage class is the wind power plant 2 of 690V to 3.3kV, at least one large-capacity power transformation system 3, an exchange
Busbar I 4, a wind-powered electricity generation convey special line 5；The piconet networking system 1, including at least two microgrid units 6, one system-level
Control centre 7；The wind power plant 2 is connected by large-capacity power transformation system 3 with ac bus I 4；The ac bus
I 4 are connected with wind-powered electricity generation conveying special line 5；Each 6 phase of microgrid unit that the wind-powered electricity generation conveying special line 5 is included with piconet networking system 1
Even；The system-level control centre 7 is connected with each microgrid unit 6.
Microgrid unit 6 shown in Fig. 2 is exactly an exemplary construction of the microgrid unit 6 in piconet networking system 1 shown in FIG. 1
Schematic diagram, including a step-down transformer 29, one is become by the first breaker/switch 9, the second breaker/switch 11 and AC/DC
The microgrid cell scheduling center 8 that parallel operation 10 and two-way AC/DC converters 12 are constituted, an ac bus II 13, a direct current mother
Line 14, at least one distributed generation unit 115, at least one AC load 16, at least two DC/DC converters：First DC/
DC converters 17, the 2nd DC/DC converters 19, at least two two-way DC/DC converters：First two-way DC/DC converters 22,
Two two-way DC/DC converters 24, at least one fuel cell 18, at least one photovoltaic generation unit for including photovoltaic module 21
20, at least one energy-storage system 23, at least one charge and discharge stake 25 charged for electric vehicle 26, at least one DC load
27；The end of the wind-powered electricity generation conveying special line 5 is connected with the high-pressure side of step-down transformer 29；The step-down transformer 29 it is low
Pressure side is connected with breaker/switch 9；The exchange side of the other end and AC/DC converters 10 of first breaker/switch 9
It is connected；The DC side of the AC/DC converters 10 is connected with DC bus 14；It is wrapped at the microgrid cell scheduling center 8
11 one end of the second breaker contained/switch is connected with power grid 28, and the other end is connected with ac bus II 13；The microgrid unit
The exchange side of the two-way AC/DC converters 12 of control centre 8 is connected with ac bus II 13, DC side and 14 phase of DC bus
Even；The distributed generation unit 15 is connected with ac bus II 13；The AC load 16 and II 13 phase of ac bus
Even；The fuel cell 18 is connected by the first DC/DC converters 17 with DC bus 14；The photovoltaic generation unit 20
Including at least a photovoltaic module 21, it is connected with DC bus 14 by the 2nd DC/DC converters 19；The energy-storage system 23
It is connected with DC bus 14 by the first two-way DC/DC converters 22；The electric vehicle charge and discharge stake 25 is in the same time
It at least can be that an electric vehicle 26 charges, be connected with DC bus 14 by the second two-way DC/DC converters 24；Described is straight
Stream load 27 is connected with DC bus.
For the connection relation of Fig. 1 and Fig. 2, specifically, the wind-powered electricity generation conveying special line 5 in Fig. 1 and microgrid unit 6 in Fig. 2
The high-pressure side of interior step-down transformer 29 is connected；System call center 7 in Fig. 1 and 8 phase of microgrid cell scheduling center in Fig. 2
Even, distribution of the system-level control centre 7 from system level coarse adjustment wind-powered electricity generation between each microgrid unit, microgrid cell scheduling center 8
On the one hand receive the regulation and control instruction of system layer, the electric energy supply and demand dynamic where another aspect fine tuning and control in microgrid unit is flat
Weighing apparatus.
Fig. 3 show an exemplary construction schematic diagram of the large-capacity power transformation system 3 in Fig. 1, including large capacity AC/AC
31 two parts of converter 30 and step-up transformer.The electric energy that the wind power plant 2 is sent out first passes through large capacity AC/AC current transformers
30 are handled, and are boosted using step-up transformer 31, and ac bus I 4 is then incorporated into.
In conclusion the utility model carried it is a kind of suitable for high-power wind turbine consumption piconet networking system pass through by
Multiple microgrid units carry out the system model that networking constitutes more capacity, provide support for high-power wind turbine consumption, while can profit
It is influenced with high-power wind turbine energy supply and the energy supply of other distributed power generations to cut down the impact of electric vehicle charging and conversion electric Load on Electric Power Grid,
System conveys special line by wind-powered electricity generation and wind-powered electricity generation is delivered to each microgrid unit, and each microgrid cell scheduling center can be according to microgrid self-energy
Supply/demand selection wind-powered electricity generation whether access, the controllability of system is improved, in addition, the utility model is suggested plans wind not
Electricity is directly incorporated into power grid, but the unsteady flow link by converters Jing Guo cross-straight-intersection, only in microgrid unit energy
Electric energy extra, with better quality is incorporated to bulk power grid when drug on the market, high-power wind turbine can not only be greatly reduced in this way
Dissolving the impact on power grid influences, moreover it is possible to improve the stability and reliability of system.
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 (2)
1. a kind of piconet networking system suitable for high-power wind turbine consumption, it is characterised in that including：
One piconet networking system（1）,
At least one wind power plant（2）,
At least one large-capacity power transformation system（3）,
One ac bus I（4）,
One wind-powered electricity generation conveys special line（5）；
The piconet networking system（1）, including：
At least two microgrid units（6）,
One system-level control centre（7）；
Wind power plant（2）Pass through large-capacity power transformation system（3）With ac bus I（4）It is connected, the ac bus I（4）With wind
Electricity conveying special line（5）It is connected, the wind-powered electricity generation conveys special line（5）With piconet networking system（1）Including microgrid unit（6）Phase
Even, the system-level control centre（7）With each microgrid unit（6）It is connected.
2. a kind of piconet networking system suitable for high-power wind turbine consumption according to claim 1, it is characterised in that：
The microgrid unit（6）Including：
One step-down transformer（29）,
One by two breaker/switches and an AC/DC converter（10）An and two-way AC/DC converter（12）Group
At microgrid cell scheduling center（8）,
One ac bus II（13）,
One DC bus（14）,
At least one distributed generation unit（15）,
At least one AC load（16）,
At least two DC/DC converters,
At least two two-way DC/DC converters,
At least one fuel cell（18）,
At least one photovoltaic generation unit（20）,
At least one energy-storage system（23）,
At least one electric vehicle charge and discharge stake（25）,
At least one DC load（27）；
Wind-powered electricity generation conveys special line（5）End and step-down transformer（29）High-pressure side be connected；The step-down transformer（29）'s
Low-pressure side and the first breaker/switch（9）It is connected, first breaker/switch（9）The other end and AC/DC converters
（10）Exchange side be connected, the AC/DC converters（10）DC side and DC bus（14）It is connected；
Microgrid cell scheduling center（8）Including the second breaker/switch（11）One end and power grid（28）It is connected, second
Breaker/switch（11）One end and ac bus II（13）It is connected；
Microgrid cell scheduling center（8）Two-way AC/DC converters（12）Exchange side and ac bus II（13）It is connected,
Two-way AC/DC converters（12）DC side and DC bus（14）It is connected；
The distributed generation unit（15）With ac bus II（13）It is connected；
The AC load（16）With ac bus II（13）It is connected；
The fuel cell（18）Pass through the first DC/DC converters（17）With DC bus（14）It is connected；
The photovoltaic generation unit（20）Including at least a photovoltaic module（21）, photovoltaic generation unit（20）Pass through second
DC/DC converters（19）With DC bus（14）It is connected；
The energy-storage system（23）Pass through the first two-way DC/DC converters（22）With DC bus（14）It is connected；
The electric vehicle charge and discharge stake（25）Pass through the second two-way DC/DC converters（24）With DC bus（14）It is connected；
The DC load（27）With DC bus（14）It is connected.
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| CN201820027048.5U CN207677451U (en) | 2018-01-08 | 2018-01-08 | A kind of piconet networking system suitable for high-power wind turbine consumption |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108039733A (en) * | 2018-01-08 | 2018-05-15 | 三峡大学 | A kind of piconet networking system suitable for high-power wind turbine consumption |
| CN108667114A (en) * | 2017-03-30 | 2018-10-16 | 比亚迪股份有限公司 | The control method of power supply system and power supply system |
-
2018
- 2018-01-08 CN CN201820027048.5U patent/CN207677451U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108667114A (en) * | 2017-03-30 | 2018-10-16 | 比亚迪股份有限公司 | The control method of power supply system and power supply system |
| CN108039733A (en) * | 2018-01-08 | 2018-05-15 | 三峡大学 | A kind of piconet networking system suitable for high-power wind turbine consumption |
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