CN207677452U - A kind of multilayer alternating current-direct current mixing micro-capacitance sensor system suitable for high-power wind turbine consumption - Google Patents
A kind of multilayer alternating current-direct current mixing micro-capacitance sensor system suitable for high-power wind turbine consumption Download PDFInfo
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- CN207677452U CN207677452U CN201820027062.5U CN201820027062U CN207677452U CN 207677452 U CN207677452 U CN 207677452U CN 201820027062 U CN201820027062 U CN 201820027062U CN 207677452 U CN207677452 U CN 207677452U
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Abstract
A kind of multilayer alternating current-direct current mixing micro-capacitance sensor system suitable for high-power wind turbine consumption, including：One multilayer alternating current-direct current mixing micro-capacitance sensor 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 multilayer alternating current-direct current mixing micro-capacitance sensor system includes：At least two microgrid units, a system-level control centre；The wind power plant is connected by large-capacity power transformation system with ac bus I, and the ac bus I is connected with wind-powered electricity generation conveying special line, and the wind-powered electricity generation conveying special line is connected with the microgrid unit, and the system-level control centre is connected with microgrid unit.Micro-capacitance sensor unit in certain space is carried out networking by invention, and wind-powered electricity generation conveying special line is set, it is combined and is coordinated using multiple units, construct the strong systematization network of energy digestion capability, support is provided for the consumption of large capacity wind-powered electricity generation, and reduces influence of the wind electricity digestion to bulk power grid.
Description
Technical field
The utility model belongs to micro-capacitance sensor technical field, and in particular to a kind of multilayer suitable for high-power wind turbine consumption is handed over
Direct current mixing micro-grid system.
Background technology
In recent years, the development and utilization of clean reproducible energy and the development of electric vehicle and universal, by various countries' weight
Depending on, majority state also put into effect with generation of electricity by new energy and the relevant policy of electric vehicle, core concept is guiding new energy hair
The development of electricity and electric vehicle replaces traditional thermal power generation, with zero-emission with the wind-force that there are no pollution to the environment, photovoltaic generation
Electric vehicle substitute conventional fuel oil automobile, be finally energy crisis, the solution of greenhouse effects, the global problems such as atmosphere pollution
Certainly make an effort.However, during renewable energy power generation and electric vehicle industry development, show numerous urgently to be resolved hurrily
The problem of, if wind-power electricity generation has intermittence, and wind power plant generated output grade is generally higher, and single wind-driven generator holds at present
Amount has been up to 10MW, and high-power wind turbine certainly will cause greater impact when networking to electric system, this also causes wind-powered electricity generation to abandon electric rate ratio
Higher, according to national energy office data, although the whole nation wind-powered electricity generation electricity volume of the first half of the year in 2015 increases by 20.7% on a year-on-year basis, but abandon wind
Electricity also rises 6.8% on year-on-year basis, averagely abandons wind-powered electricity generation rate and has been up to 15.2%, and electric rate is abandoned far more than same period photovoltaic generation.So how
High-power wind turbine is dissolved, is urgent problem to be solved.For the problem, good wind electricity digestion measure currently there is no.In addition,
It is trend of the times that electric vehicle is universal on a large scale, and a large amount of electric vehicle charging load accesses power grid, certainly will hold to current electric grid
Amount and electricity generation system capacity propose new requirement, and for the problem, conventional technique scheme is upgraded to power transmission cable
Transformation or dynamic compatibilization, preferable technical solution are construction micro-capacitance sensors, and distributed power generation and electric vehicle charging and conversion electric are mutually tied
It closes, the electric energy that on-site elimination photovoltaic generation and other distributed power generations are provided is come the impact that mitigates electric automobile load to power grid
It influences, however single micro-capacitance sensor operation inertia is small, poor robustness, pattern is more, power supply characteristic difference is big, does not have equally stronger
New energy digestion capability, it is difficult to the problem of stabilizing wind power fluctuation.
Invention content
For deficiencies of the prior art, to solve the consumption of high-power wind turbine difficulty, abandoning that wind rate is higher, electric vehicle
The problems such as load charge to distribution capacity and high power generation capacity requirement, the utility model proposes one kind to disappear suitable for high-power wind turbine
Micro-capacitance sensor unit in certain space is carried out networking by the multilayer alternating current-direct current mixing micro-capacitance sensor system received, and wind-powered electricity generation conveying is arranged
Special line is combined using multiple units and is coordinated, constructs the strong systematization network of energy digestion capability, is the consumption of large capacity wind-powered electricity generation
It provides and supports, and reduce influence of the wind electricity digestion to bulk power grid.
The technical solution that the utility model is taken is：
A kind of multilayer alternating current-direct current mixing micro-capacitance sensor system suitable for high-power wind turbine consumption, including：
One multilayer alternating current-direct current mixing micro-capacitance sensor system,
At least one wind power plant,
At least one large-capacity power transformation system,
One ac bus I,
One wind-powered electricity generation conveys special line；
The multilayer alternating current-direct current mixing micro-capacitance sensor system includes：
At least two microgrid units,
One system-level control centre；
The 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 are defeated
Special line is sent to be connected, the wind-powered electricity generation conveying special line is connected with the microgrid unit, the system-level control centre and microgrid unit phase
Even.
The microgrid unit includes：
One step-down transformer,
One microgrid cell scheduling center being made of two breaker/switches and a two-way AC/DC converter；
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,
At least one electric vehicle charge and discharge stake,
At least one DC load；
Wind-powered electricity generation conveying special line end is connected with step-down transformer, the step-down transformer and microgrid cell scheduling center
The first breaker/switch side be connected, first breaker/switch other side is connected with ac bus II；
The microgrid cell scheduling is connected centrally through the second breaker/switch with bulk power grid, second breaker/open
Pass is connected with ac bus II；
The exchange side of the two-way AC/DC converters is connected with ac bus II, the DC side of two-way AC/DC converters with
DC bus is connected；
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 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 charge and discharge stake is connected by the second two-way DC/DC converters with DC bus.
A kind of multilayer alternating current-direct current mixing micro-capacitance sensor system suitable for high-power wind turbine consumption of the utility model has as follows
Advantage：
1, the utility model can dissolve high-power wind turbine, can maximally utilise wind energy, and reduce wind power plant abandons wind rate,
In addition, the utility model setting wind-powered electricity generation conveys special line, flexibility and the controllability of wind electricity digestion can be improved, wind-powered electricity generation is avoided directly to enter
Net reduces influence of the wind electricity digestion to bulk power grid.
2, the micro-capacitance sensor unit in certain space is carried out networking by the utility model, the multilayer alternating current-direct current mixing built
Micro-grid system has stronger energy digestion capability and maintains power grid internal energy dynamic equilibrium ability.
3, the utility model uses multi-source and multilayered schema, and has ac bus and DC bus concurrently, can make full use of each
The energy of kind form, can enhance the access of load and various types distributed generation unit.
4, compared with existing exchange micro-capacitance sensor, direct-current grid or alternating current-direct current mixing micro-capacitance sensor, the utility model is carried
Multiple microgrid units are carried out networking by scheme, if wind-powered electricity generation conveys special line, and wind-powered electricity generation is not directly accessed bulk power grid, in this way, carried side
Case has high-power wind turbine digestion capability, can substantially reduce and abandon wind-powered electricity generation amount and abandon wind-powered electricity generation rate, can maximally utilise renewable
The energy, while the influence to bulk power grid is smaller and controllable.
5, it in addition, the utility model is suggested plans stronger for the access of load and various distributed generation units, fills
Divide the otherness and complementarity using multiple power sources powering mode, becomes disadvantage as profit, the regulation and control of system self-energy dynamic equilibrium is allowed to become
More flexible, energy utilization rate also higher.
6, it can solve the problems, such as huge caused by local power grid when high-power wind turbine consumption and electric vehicle network on a large scale
Big load impact problem.
Description of the drawings
Fig. 1 is that a kind of multilayer alternating current-direct current mixing micro-capacitance sensor system one suitable for high-power wind turbine consumption of the utility model is real
Apply the structural schematic diagram of example.
Fig. 2 is that the structure of one example of micro- electric unit in the carried multilayer alternating current-direct current mixing micro-capacitance sensor system of the utility model is shown
It is intended to.
Fig. 3 is the structural schematic diagram of an example of the large-capacity power transformation system involved in the utility model.
Specific implementation mode
A kind of multilayer alternating current-direct current mixing micro-capacitance sensor system suitable for high-power wind turbine consumption, including：
One multilayer alternating current-direct current mixing micro-capacitance sensor 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 multilayer alternating current-direct current mixing micro-capacitance sensor system 1 includes：
At least two microgrid units 6,
One system-level control centre 7；System-level control centre 7 is for coordinating each microgrid unit consumption generation of electricity by new energy
The ratio of power, is mainly made of communication module and data processing module, receives the shape of each microgrid unit by communication module
State amount, then the dispatch command of each microgrid unit under current state is calculated by data processing module, it finally will by communication module
These dispatch commands are transmitted to microgrid unit.
The wind power plant 2 is connected by large-capacity power transformation system 3 with ac bus I 4, the ac bus I 4 and wind
Electricity conveying special line 5 is connected, and wind-powered electricity generation conveying special line 5 is connected with the microgrid unit 6, the system-level control centre 7 with it is micro-
Net unit 6 is connected.
The microgrid unit 6 includes：
One step-down transformer 27,
One microgrid cell scheduling center 8 being made of two breaker/switches and a two-way AC/DC converter 10；
One ac bus II 12,
One DC bus 13,
At least one distributed generation unit 14,
At least one AC load 15,
At least two DC/DC converters,
At least two two-way DC/DC converters,
At least one fuel cell 17,
At least one photovoltaic generation unit 19, multiple photovoltaic generation units 19 constitute photovoltaic generating system 20；
At least one energy-storage system 22,
At least one electric vehicle charge and discharge stake 25, electric vehicle charge and discharge stake 25 are charged for electric vehicle 24；
At least one DC load 28；
5 end of the wind-powered electricity generation conveying special line is connected with step-down transformer 27, the step-down transformer 27 and microgrid unit tune
First breaker at degree center 8/switch, 11 side is connected, first breaker/switch, 11 other side and ac bus II 12
It is connected；
Microgrid cell scheduling center 8 is connected by the second breaker/switch 9 with bulk power grid 26, second open circuit
Device/switch 9 is connected with ac bus II 12；
The exchange side of the two-way AC/DC converters 10 is connected with ac bus II 12, two-way AC/DC converters 10 it is straight
Stream side is connected with DC bus 13；
The distributed generation unit 14 is connected with ac bus II 12；
The AC load 15 is connected with ac bus II 12；
The fuel cell 17 is connected by the first DC/DC converters 16 with DC bus 13；
The photovoltaic generation unit 19 is connected by the 2nd DC/DC converters 18 with DC bus 13；
The energy-storage system 22 is connected by the first two-way DC/DC converters with 21 with DC bus 13；
The electric vehicle charge and discharge stake 25 is connected by the second two-way DC/DC converters with 23 with DC bus 13.
A kind of electric energy bidirectional transmission method, multilayer alternating current-direct current mixing micro-capacitance sensor system, by multiple microgrids in certain space
Unit 6 carries out networking, and each microgrid unit 6 is adjusted and is controlled by system-level control centre 7；In system-level scheduling
The heart 7 is then by controlling breaker/switch, to regulate and control the electric energy or bulk power grid 26 and microgrid unit 6 that wind-powered electricity generation conveying special line 5 transmits
Connection mode, meanwhile, pass through and control the interconnection that two-way AC/DC converters 10 realize ac bus and DC bus 13, realization
The transmitted in both directions of energy.
A kind of network-building method of multilayer alternating current-direct current mixing micro-capacitance sensor system suitable for high-power wind turbine consumption, wind power plant 2
The electric energy sent out concentrates on ac bus I 4 after carrying out power converter by large-capacity power transformation system 5, defeated by wind-powered electricity generation
Special line 5 is sent to send into the microgrid unit 6 of multilayer alternating current-direct current mixing micro-capacitance sensor system, first passing through step-down transformer 27 reduces voltage etc.
Grade, then pass through the 11 incoming transport busbar II 12 of the first breaker/switch of system-level control centre 8, at the same time, bulk power grid 26
Connect with ac bus II 12 also through the second breaker/switch 9, wind-powered electricity generation conveys the alternating current of special line 5 or bulk power grid 26, with point
The alternating current that cloth generator unit 14 is sent out together, is powered for AC load 15 jointly；Microgrid cell scheduling center 8 it is two-way
AC/DC converters 10 are the hinges for associating alternating current with direct current, multi-source alternating current are converted into direct current, with photovoltaic
Generator unit 19, fuel cell 17 electric energy together, send to energy-storage units 22, electric vehicle charge and discharge stake 25, DC load 28.
For the connection relation of Fig. 1 and Fig. 2, specifically, the wind-powered electricity generation conveying special line 5 in Fig. 1 and the downconverter in Fig. 2
The high-pressure side of device 27 is connected, and the system-level control centre 7 in Fig. 1 is connected with the microgrid cell scheduling center 8 in Fig. 2.
Fig. 3 show an exemplary construction schematic diagram of the large-capacity power transformation system 3 in Fig. 1, including large capacity AC/AC
29 two parts of converter 28 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
28 are handled, and are boosted using step-up transformer 29, and ac bus I 4 is then incorporated into.
In conclusion a kind of multilayer alternating current-direct current suitable for high-power wind turbine consumption that the utility model is carried mixes micro- electricity
Net system is by photovoltaic generation and other distributed generation units, electric vehicle charge and discharge stake, AC load, DC load, energy storage
System, fuel cell, control device are combined by the form of " mixing micro-capacitance sensor ", and constituting one, " mixing of multilayer alternating current-direct current is micro-
Network system ", and wind-powered electricity generation conveying special line is set, allow system not only to have smooth intermittence energy output power, support power grid is cut
Peak load improves the advantages that power quality, reduction power grid dilatation and infrastructure construction difficulty, enhancing system reliability, moreover it is possible to
Support is provided for the consumption of large capacity wind-powered electricity generation, wind electricity digestion is reduced on the impact of power grid and influence, can preferably solve high-power
Wind electricity digestion problem.
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 multilayer alternating current-direct current mixing micro-capacitance sensor system suitable for high-power wind turbine consumption, it is characterised in that including：
One multilayer alternating current-direct current mixing micro-capacitance sensor 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 multilayer alternating current-direct current mixing micro-capacitance sensor system（1）Including：
At least two microgrid units（6）,
One system-level control centre（7）；
The 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）
Special line is conveyed with wind-powered electricity generation（5）It is connected, the wind-powered electricity generation conveys special line（5）With the microgrid unit（6）It is connected, the system-level scheduling
Center（7）With microgrid unit（6）It is connected.
2. a kind of multilayer alternating current-direct current mixing micro-capacitance sensor system suitable for high-power wind turbine consumption according to claim 1,
It is characterized in that：
The microgrid unit（6）Including：
One step-down transformer（27）,
One by two breaker/switches and a two-way AC/DC converter（10）The microgrid cell scheduling center of composition（8）；
One ac bus II（12）,
One DC bus（13）,
At least one distributed generation unit（14）,
At least one AC load（15）,
At least two DC/DC converters,
At least two two-way DC/DC converters,
At least one fuel cell（17）,
At least one photovoltaic generation unit（19）,
At least one energy-storage system（22）,
At least one electric vehicle charge and discharge stake（25）,
At least one DC load（28）；
The wind-powered electricity generation conveys special line（5）End and step-down transformer（27）It is connected, the step-down transformer（27）With microgrid unit
Control centre（8）The first breaker/switch（11）Side is connected, first breaker/switch（11）The other side with exchange
Busbar II（12）It is connected；
Microgrid cell scheduling center（8）Pass through the second breaker/switch（9）With bulk power grid（26）It is connected, described second is disconnected
Road device/switch（9）With ac bus II（12）It is connected；
The two-way AC/DC converters（10）Exchange side and ac bus II（12）It is connected, two-way AC/DC converters（10）'s
DC side and DC bus（13）It is connected；
The distributed generation unit（14）With ac bus II（12）It is connected；
The AC load（15）With ac bus II（12）It is connected；
The fuel cell（17）Pass through the first DC/DC converters（16）With DC bus（13）It is connected；
The photovoltaic generation unit（19）Pass through the 2nd DC/DC converters（18）With DC bus（13）It is connected；
The energy-storage system（22）Pass through the first two-way DC/DC converters（21）With DC bus（13）It is connected；
The electric vehicle charge and discharge stake（25）Pass through the second two-way DC/DC converters（23）With DC bus（13）It is connected.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108183506A (en) * | 2018-01-08 | 2018-06-19 | 三峡大学 | A kind of multilayer alternating current-direct current mixing micro-capacitance sensor system suitable for high-power wind turbine consumption |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108183506A (en) * | 2018-01-08 | 2018-06-19 | 三峡大学 | A kind of multilayer alternating current-direct current mixing micro-capacitance sensor system suitable for high-power wind turbine consumption |
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