CN207910488U - A kind of multilayer micro-grid system provided multiple forms of energy to complement each other - Google Patents
A kind of multilayer micro-grid system provided multiple forms of energy to complement each other Download PDFInfo
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- CN207910488U CN207910488U CN201820027622.7U CN201820027622U CN207910488U CN 207910488 U CN207910488 U CN 207910488U CN 201820027622 U CN201820027622 U CN 201820027622U CN 207910488 U CN207910488 U CN 207910488U
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Abstract
A kind of multilayer micro-grid system provided multiple forms of energy to complement each other, including：At least one wind power plant, at least one photo-voltaic power generation station, at least one large-capacity power converter, at least one DC/AC converters, at least two step-up transformers, one ac bus I, an AC power line, a step transformer, one two-way AC/DC converter, one system-level energy-storage system, at least two microgrid units, a system-level control centre；The electric energy that the wind power plant is sent out by large-capacity power converter, the first step-up transformer processing after access ac bus I, the electric energy that the photo-voltaic power generation station is sent out by DC/AC converters, the second step-up transformer processing after access ac bus I, the energy of the system-level energy-storage system by two-way AC/DC converters, step transformer processing after access ac bus I, ac bus I is connected with the input terminal of AC power line, and electric energy is transmitted in each microgrid unit by ac bus I by AC power line.The utility model solves the consumption of high-power wind turbine difficulty, electric vehicle, and access impacts the problems such as big, system stability and reliability are to be improved to power grid on a large scale.
Description
Technical field
The utility model belongs to micro-capacitance sensor technical field, and in particular to a kind of multilayer micro-grid system to provide multiple forms of energy to complement each other
System.
Background technology
With the continuous consumption of fossil energy and the excess emissions of greenhouse gases, global warming trend constantly adds
The problems such as play, energy crisis, greenhouse effects, atmosphere pollution, already becomes global problem.In order to improve this present situation, various countries are poly-
The development and utilization of burnt clean reproducible energy and the research and development of the electric vehicle of replacing oil by electricity.However, new energy is sent out
Electricity generally has the characteristics that intermittent and unstability, especially high-power if new energy, which is generated electricity, can be directly incorporated into power grid
If wind-power electricity generation be connected to the grid, extreme shock certainly will be caused to current power system, seriously affect the steady of current power system
How qualitative and power quality dissolves high-power wind turbine, is always the problem of technical field of wind power generation.With regard to the hair of electric vehicle
For exhibition trend, the policies of various countries all encourage to greatly develop ev industry, however, when electric vehicle accesses power grid on a large scale,
Load level can be increased substantially, this just proposes new requirement to net capacity and power generation capacity.In face of one side photovoltaic
The utilization rate of the generations of electricity by new energy such as power generation or wind-power electricity generation is not high and wastes wind-powered electricity generation or photovoltaic generation resource, and on the other hand negative
The continuous improvement of lotus level proposes power generation capacity the situation of higher demand, has researcher to propose the electric energy for sending out new energy
On-site elimination preferentially meets the needs of electric vehicle is to electric energy, to electric power when generation of electricity by new energy can be avoided to be connected to the grid in this way
The impact that system is brought can also solve the large-scale application of electric vehicle to the high request for the capacity that generates electricity, and here it is micro-capacitance sensors
Technology.However, the operation inertia of micro-capacitance sensor is small, poor robustness, power supply characteristic difference are big, it is lower to be merely able to consumption power grade
Generation of electricity by new energy can not stabilize high-power wind turbine and impact and influence caused by system at all for powerful wind-powered electricity generation.Such as
What more efficiently dissolves high-power wind turbine, how to improve the reliability and stability of system itself, how to keep system self-energy
Equilibrium, be current urgent problem to be solved.
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 extensive access is big to power grid impact, system stability and reliability are to be improved, propose it is a kind of provide multiple forms of energy to complement each other it is more
Layer micro-grid system.
The technical solution that the utility model is taken is：
A kind of multilayer micro-grid system provided multiple forms of energy to complement each other, including：
At least one wind power plant,
At least one photo-voltaic power generation station,
At least one large-capacity power converter,
At least one DC/AC converters,
At least two step-up transformers,
One ac bus I,
One AC power line,
One step transformer,
One two-way AC/DC converter,
One system-level energy-storage system, system-level energy-storage system can be mixed with super capacitor by all types of batteries and be formed,
The task of large capacity and high-power charge and discharge may be implemented.
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.
The electric energy that the wind power plant is sent out by large-capacity power converter, the first step-up transformer processing after access hand over
Flow busbar I, the electric energy that the photo-voltaic power generation station is sent out by DC/AC converters, the second step-up transformer processing after access hand over
Flow busbar I, the energy of the system-level energy-storage system by two-way AC/DC converters, step transformer processing after access
Ac bus I, ac bus I are connected with the input terminal of AC power line, and ac bus I is transmitted electric energy by AC power line
To in each microgrid unit.
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 module,
At least one microgrid grade energy-storage system,
At least one electric vehicle charge and discharge stake,
At least one DC load；
The output end of the AC power line is connected with the high-pressure side of the step-down transformer of microgrid unit；The downconverter
The low-pressure side of device is connected with the second breaker/switch at microgrid cell scheduling center；The other side of second breaker/switch
It is connected with ac bus II；
The microgrid unit is connected by the first breaker/switch with bulk power grid；First breaker/switch it is another
Side 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；
Distributed generation unit in the microgrid unit is connected with ac bus II；
The AC load of the microgrid unit is connected with ac bus II；
The fuel cell of the microgrid unit is connected by the first DC/DC converters with DC bus；
The photovoltaic module of the microgrid unit is connected by the 2nd DC/DC converters with DC bus；
The microgrid grade energy-storage system of the microgrid unit is connected by the first two-way DC/DC converters with DC bus；
The electric vehicle charge and discharge stake of the microgrid unit is connected by the second two-way DC/DC converters with DC bus；
The system-level control centre and the microgrid cell scheduling center in system-level energy-storage system and each microgrid unit
It is connected, realizes system-level regulation and control；
Microgrid cell scheduling center and system-level control centre, AC power line, ac bus II, DC bus,
Bulk power grid is connected, and realizes that the energy dynamics inside microgrid unit are balanced.
A kind of multilayer micro-grid system provided multiple forms of energy to complement each other of the utility model, has the following advantages that：
1, multiple microgrid units are carried out networking by the utility model, improve digestion capability of the system to generation of electricity by new energy,
It can solve the problems, such as that high-power wind turbine difficulty dissolves.
2, the utility model is using pattern of providing multiple forms of energy to complement each other, in conjunction with the energy of system-level energy-storage system and microgrid grade energy-storage system
Regulatory function can solve the problems, such as that electric vehicle accesses the increase-volume proposed to net capacity on a large scale, while improve energy utilization rate.
3, the utility model uses the multilayer scheduling controlling pattern of system layer coarse adjustment and microgrid layer fine tuning, convenient for flexible, accurate
True regulator control system energy, can be improved balancing energy regulating effect, improves the reliability and stability of system power supply.
4, the utility model is controlled by system-level equipped with system-level and two layers of energy-storage system of microgrid grade, system-level energy-storage system
Control centre is flowed from system layer coarse adjustment system capacity, and microgrid grade energy-storage system is then controlled by microgrid cell scheduling
The heart precisely adjusts the energy flow in microgrid unit from microgrid layer.Micro-capacitance sensor, direct-current grid or single friendship are exchanged with existing
Direct current mixing micro-capacitance sensor is compared, and the multilayer micro-grid system that the utility model is carried is by multiple microgrid lists in certain space
Member carries out networking, carries out it control of system-level and microgrid grade bilayer, wind/light complementation can not only be made full use of to come to the maximum extent
Using regenerative resource, the high-power wind turbine digestion capability of system is greatly improved, moreover it is possible to which system is improved by bilayer control
Stability and reliability.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram for one embodiment of multilayer micro-grid system provided multiple forms of energy to complement each other of the utility model.
Fig. 2 is the structural schematic diagram for each one example of microgrid unit that micro-grid system is constituted in the utility model.
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 multilayer micro-grid system provided multiple forms of energy to complement each other, including at least one wind power plant 1, at least one
A photo-voltaic power generation station 4, at least one large-capacity power converter 2, at least one DC/AC converters 5, at least two boosting transformations
Device：First step-up transformer 3, the second step-up transformer 6, an ac bus I, 7, AC power line 11, a lifting
Pressure transformer 8, a first two-way AC/DC converter 9, a system-level energy-storage system, 10, at least two microgrid units 12,
One system-level control centre 13.Within the scope of certain space, each wind power plant 1 ..., the electric energy that wind power plant m is sent out
It can be by being incorporated to ac bus I 7, each photovoltaic after large-capacity power converter 2 and the processing of the first step-up transformer 3
Power station 1 ..., the electric energy that photo-voltaic power generation station n is sent out can be after the processing by DC/AC converters 5 and the second step-up transformer 6
It is incorporated to ac bus I 7, in addition to this, the alternating current that the distributed generation system of other forms is sent out can also flexibly, easily
Incoming transport busbar I 7；The electric energy of the system-level energy-storage system 10 passes through the first two-way AC/DC converters 9 and lifting buckling
It is connected with ac bus I 7 after the processing of depressor 8；The ac bus I 7 is connected with AC power line 11, passes through ac transmission
Energy is delivered in each microgrid unit 12 by line 11；The each microgrid unit of 13 macro adjustments and controls of system-level control centre 12
Energy flow, and control the demand of electric energy according to multipotency power supply volume and load the work of the first two-way AC/DC converters 9
Operation mode allows system-level energy-storage system 10 to be in charge/discharge state.
As shown in Fig. 2, the microgrid unit is the concrete structure of the microgrid unit 12 in Fig. 1, including a decompression
Transformer 14, one is made of the first breaker/switch 16, the second breaker/switch 17 and the second two-way AC/DC converters 18
Microgrid cell scheduling center 15, an ac bus II 19, a DC bus 20, at least one distributed generation unit
21, at least one AC load 22, at least two DC/DC converters：First DC/DC converters 23, the 2nd DC/DC converters
25, at least two two-way DC/DC converters：First two-way DC/DC converters 27, the second two-way DC/DC converters 29, at least one
A fuel cell 24, at least one photovoltaic module 26, at least one microgrid grade energy-storage system 28, at least one electric vehicle charge and discharge
Electric stake 30, at least one DC load 31.The high pressure of step-down transformer 14 in the end of AC power line 11 in Fig. 1 and Fig. 2
Side is connected；The low-pressure side of the step-down transformer 14 is connected with the second breaker/switch 17 at microgrid cell scheduling center 15,
The other side of second breaker/switch 17 is connected with ac bus II 19；The microgrid unit 12 passes through microgrid cell scheduling
First breaker at center 15/switch 16 is connected with bulk power grid 32, and microgrid may be implemented by controlling the first breaker/switch 16
Unit 12 be incorporated into the power networks and islet operation；The second two-way AC/DC converters 18 in the microgrid cell scheduling center 15
Exchange side be connected with ac bus II 19, DC side is connected with DC bus 20, be AC energy and direct current energy conversion
Channel is provided with transmission；The ac bus II 19 is connected with distributed generation unit 21, receives distributed generation unit 21
The electric energy of offer；The ac bus II 19 is connected with AC load 22, and electric energy is provided for AC load 22；The fuel
Battery 24 is connected by the first DC/DC converters 23 with DC bus 20, it is possible to provide direct current energy；The photovoltaic module 26 is
The component part for the small-scale photovoltaic generating system for including inside microgrid unit, it passes through the 2nd DC/DC converters 25 and direct current
Busbar 20 is connected；The microgrid grade energy-storage system 28 is connected by the first two-way DC/DC converters 27 with DC bus 20, is risen
The effect adjusted to balancing energy；The electric vehicle charge and discharge stake 30 passes through the second two-way DC/DC converters 29 and direct current
Busbar 20 is connected, and electric energy can be not only drawn from system and is used for electric vehicle, moreover it is possible to be discharged in system capacity deficiency electronic
The electric energy of automobile storage battery is system power supply, participates in system capacity well-balanced adjustment.
In conclusion a kind of multilayer micro-grid system provided multiple forms of energy to complement each other that the utility model is carried, makes full use of new
The energy generates electricity, and forms pattern of providing multiple forms of energy to complement each other；Generation of electricity by new energy ability is dissolved in order to improve system, it will be a certain range of multiple micro-
Net unit carries out networking, and support is provided for consumption high-power wind turbine；In order to realize that the balancing energy of complication system is adjusted, using more
Layer scheduling controlling structure.Therefore, the alternating current-direct current mixing micro-capacitance sensor group network system that the utility model is carried, has and provides multiple forms of energy to complement each other, is more
, not only there is smooth intermittence energy output power in the features such as layer scheduling controlling, more piconet networkings, support power grid peak load shifting, carries
High power quality reduces the advantages that power grid dilatation and infrastructure construction difficulty, enhancing system reliability, moreover it is possible to solve high-power
The problems such as consumption of wind-powered electricity generation difficulty, electric vehicle charging load high to distribution capacity and power generation capacity requirement, improve the reliable of system
Property and stability.
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 micro-grid system provided multiple forms of energy to complement each other, it is characterised in that including：
At least one wind power plant（1）,
At least one photo-voltaic power generation station（4）,
At least one large-capacity power converter（2）,
At least one DC/AC converters（5）,
At least two step-up transformers,
One ac bus I（7）,
One AC power line（11）,
One step transformer（8）,
One the first two-way AC/DC converter（9）,
One system-level energy-storage system（10）,
At least two microgrid units（12）,
One system-level control centre（13）；
The wind power plant（1）The electric energy sent out passes through large-capacity power converter（2）, the first step-up transformer（3）Processing after
Incoming transport busbar I（7）, the photo-voltaic power generation station（4）The electric energy sent out passes through DC/AC converters（5）, the second step-up transformer
（6）Processing after access ac bus I（7）, the system-level energy-storage system（10）Energy pass through the first two-way AC/DC transformation
Device（9）, step transformer（8）Processing after access ac bus I（7）, ac bus I（7）With AC power line（11）'s
Input terminal is connected, ac bus I（7）Pass through AC power line（11）Electric energy is transmitted to each microgrid unit（12）In.
2. a kind of multilayer micro-grid system provided multiple forms of energy to complement each other according to claim 1, it is characterised in that：
The microgrid unit（12）Including：
One step-down transformer（14）,
One by two breaker/switches and a second two-way AC/DC converter（18）The microgrid cell scheduling center of composition
（15）,
One ac bus II（19）,
One DC bus（20）,
At least one distributed generation unit（21）,
At least one AC load（22）,
At least two DC/DC converters,
At least two two-way DC/DC converters,
At least one fuel cell（24）,
At least one photovoltaic module（26）,
At least one microgrid grade energy-storage system（28）,
At least one electric vehicle charge and discharge stake（30）,
At least one DC load（31）；
The AC power line（11）Output end and microgrid unit（12）Step-down transformer（14）High-pressure side be connected；It is described
Step-down transformer（14）Low-pressure side and microgrid cell scheduling center（15）The second breaker/switch（17）It is connected；Described
Two breakers/switch（17）The other side and ac bus II（19）It is connected；
The microgrid unit（12）Pass through the first breaker/switch（16）With bulk power grid（32）It is connected；First breaker/open
It closes（16）The other side and ac bus II（19）It is connected；
Microgrid cell scheduling center（15）The second two-way AC/DC converters（18）Exchange side and ac bus II（19）
It is connected, the second two-way AC/DC converters（18）DC side and DC bus（20）It is connected；
The microgrid unit（12）In distributed generation unit（21）With ac bus II（19）It is connected；
The microgrid unit（12）AC load（22）With ac bus II（19）It is connected；
The microgrid unit（12）Fuel cell（24）Pass through the first DC/DC converters（23）With DC bus（20）It is connected；
The microgrid unit（12）Photovoltaic module（26）Pass through the 2nd DC/DC converters（25）With DC bus（20）It is connected；
The microgrid unit（12）Microgrid grade energy-storage system（28）Pass through the first two-way DC/DC converters（27）With DC bus
（20）It is connected；
The microgrid unit（12）Electric vehicle charge and discharge stake（30）Pass through the second two-way DC/DC converters（29）With direct current mother
Line（20）It is connected；
The system-level control centre（13）With system-level energy-storage system（10）With the microgrid cell scheduling in each microgrid unit
Center（15）It is connected；
Microgrid cell scheduling center（15）With system-level control centre（13）, AC power line（11）, ac bus II
（19）, DC bus（20）, bulk power grid（32）It is connected.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108183505A (en) * | 2018-01-08 | 2018-06-19 | 三峡大学 | A kind of multilayer micro-grid system provided multiple forms of energy to complement each other |
| CN109193900A (en) * | 2018-10-15 | 2019-01-11 | 深圳市安和威电力科技股份有限公司 | It is a kind of based on common DC bus light storage fill microgrid management system and management method |
| CN109309391A (en) * | 2018-12-07 | 2019-02-05 | 国家电网有限公司 | A kind of photovoltaic charge station tuning controller |
| CN109617104A (en) * | 2018-12-07 | 2019-04-12 | 国家电网有限公司 | Grid control method is filled in a kind of storage of light |
-
2018
- 2018-01-08 CN CN201820027622.7U patent/CN207910488U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108183505A (en) * | 2018-01-08 | 2018-06-19 | 三峡大学 | A kind of multilayer micro-grid system provided multiple forms of energy to complement each other |
| CN109193900A (en) * | 2018-10-15 | 2019-01-11 | 深圳市安和威电力科技股份有限公司 | It is a kind of based on common DC bus light storage fill microgrid management system and management method |
| CN109193900B (en) * | 2018-10-15 | 2024-03-26 | 深圳市安和威电力科技股份有限公司 | Optical storage and filling micro-grid management system and management method based on common direct current bus |
| CN109309391A (en) * | 2018-12-07 | 2019-02-05 | 国家电网有限公司 | A kind of photovoltaic charge station tuning controller |
| CN109617104A (en) * | 2018-12-07 | 2019-04-12 | 国家电网有限公司 | Grid control method is filled in a kind of storage of light |
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