CN107681649A - A kind of method for controlling direct-current grid busbar voltage stable - Google Patents
A kind of method for controlling direct-current grid busbar voltage stable Download PDFInfo
- Publication number
- CN107681649A CN107681649A CN201710847736.6A CN201710847736A CN107681649A CN 107681649 A CN107681649 A CN 107681649A CN 201710847736 A CN201710847736 A CN 201710847736A CN 107681649 A CN107681649 A CN 107681649A
- Authority
- CN
- China
- Prior art keywords
- busbar voltage
- direct
- voltage
- current grid
- level
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000006641 stabilisation Effects 0.000 claims abstract description 10
- 238000011105 stabilization Methods 0.000 claims abstract description 10
- 238000004146 energy storage Methods 0.000 claims description 32
- 230000003044 adaptive effect Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 13
- 230000005611 electricity Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 238000007665 sagging Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention provides a kind of method for controlling direct-current grid busbar voltage stable, including：Step S1, previously according to fluctuation range of the direct-current grid busbar voltage compared to rated voltage, the direct-current grid busbar voltage is divided into four levels；Step S2, according to actual fluctuation situation of the busbar voltage of the direct-current grid compared to rated voltage, determine that the direct-current grid busbar voltage is located at which of four levels level；Step S3, according to the level for the busbar voltage determined, using the stabilization of the distributed power source maintenance busbar voltage corresponding with the level in DC micro power grid system.The invention has the advantages that：The use range of direct-current grid and its independence of operation can be at utmost lifted, reaches the effect that clean energy resource maximally utilizes.
Description
Technical field
The present invention relates to voltage control technology field, more particularly to a kind of side for controlling direct-current grid busbar voltage stable
Method.
Background technology
In recent years, generation of electricity by new energy ratio shared in power system increasingly improves, and micro-capacitance sensor is integrating new energy hair
There are many advantages in terms of electricity and power distribution network, therefore by extensive concern both domestic and external.Micro-capacitance sensor is typically by distributed power generation list
Member, energy-storage units, electric power conversion unit and load cell etc. form.It is micro- according to the type of electric current in micro-grid system and voltage
Power network can be divided into direct-current grid, exchange micro-capacitance sensor and alternating current-direct current mixing micro-capacitance sensor.Compared to exchange micro-capacitance sensor, direct-current grid
With many advantages：
1) Partial DC load can be directly connected on common bus without cascade converter, reduced system loss, improved system effect
Rate；
2) the various distributed power source of the integration of flexible and convenient, such as photoelectricity, wind-powered electricity generation, fuel gas generation；
3) it is not required to carry out the Synchronization Control of dc bus and power distribution network.Therefore, direct-current grid is following intelligent distribution system
Important component.
The problems such as frequency stabilization and idle work optimization is not present in DC micro power grid system, DC bus-bar voltage is uniquely to weigh
The foundation whether system active power balances.Therefore, stable DC busbar voltage is the primary mesh of DC micro-electric network operation control
Mark.
The content of the invention
The technical problems to be solved by the invention are, there is provided a kind of side for controlling direct-current grid busbar voltage stable
Method, the use range of direct-current grid and its independence of operation can be at utmost lifted, reaches clean energy resource and maximally utilizes
Effect.
In order to solve the above-mentioned technical problem invention provides a kind of method for controlling direct-current grid busbar voltage stable, bag
Include：
Step S1, previously according to fluctuation range of the direct-current grid busbar voltage compared to rated voltage, by the direct current
Micro-capacitance sensor busbar voltage is divided into four levels；
Step S2, according to actual fluctuation situation of the busbar voltage of the direct-current grid compared to rated voltage, it is determined that described
Direct-current grid busbar voltage is located at which of four levels level；
Step S3, according to the level for the busbar voltage determined, using in DC micro power grid system with the level phase
Corresponding distributed power source maintains the stabilization of the busbar voltage.
Wherein, when determining the first level that the busbar voltage is located in four levels, using the direct current
Energy-storage battery in micro-grid system remains stable to the direct-current grid busbar voltage；
When determining the second level that the busbar voltage is located in four levels, using the DC micro power grid system
In photovoltaic cells stable is maintained to the direct-current grid busbar voltage；
When determining third layer level that the busbar voltage is located in four levels, using in the direct current network system
Gas turbine stable is maintained to the direct-current grid busbar voltage；
When determining four level that the busbar voltage is located in four levels, using the direct current network system outside
The AC network connect remains stable to the direct-current grid busbar voltage.
Wherein, when first percentage of the direct-current grid busbar voltage more than or equal to the rated voltage, it is less than
Or equal to the rated voltage the second percentage when, determine the busbar voltage is located in four levels described first
Level.
Wherein, first percentage is 95%, and second percentage is 105%.
Wherein, when second percentage of the direct-current grid busbar voltage more than the rated voltage, it is less than or equal to
During three percentage of the rated voltage, second level that the busbar voltage is located in four levels is determined.
Wherein, the 3rd percentage is 108%.
Wherein, when first percentage of the direct-current grid busbar voltage less than the rated voltage, it is more than or equal to
During four percentage of the rated voltage, the third layer level that the busbar voltage is located in four levels is determined.
Wherein, the 4th percentage is 92%.
Wherein, when fourth percentage of the direct-current grid busbar voltage less than the rated voltage, more than the volume
When determining three percentage of voltage, the 4th level that the busbar voltage is located in four levels is determined.
Wherein, the energy-storage battery specifically maintains the direct-current grid busbar voltage using adaptive droop control mode
Stabilization.
Wherein, the photovoltaic cells specifically maintain the steady of the direct-current grid busbar voltage using double PI control modes
It is fixed.
Wherein, the gas turbine specifically maintains the steady of the direct-current grid busbar voltage using double PI control modes
It is fixed.
Wherein, when using the distributed power source maintenance bus electricity corresponding with the level in DC micro power grid system
Pressure it is stable when, the corresponding distributed power source is operated in Isobarically Control pattern, and other distributed power sources are operated in work(
Rate control model.
The beneficial effect of the embodiment of the present invention is：
Embodiments of the invention control stable DC micro-capacitance sensor busbar voltage by hierarchical, on the one hand, improve DC micro-electric
The stability of net system, improve the running independence of direct-current grid；On the other hand, improve direct-current grid uses model
Farmland, so as to realize maximally utilizing for clean energy resource.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of schematic flow sheet for controlling the stable method one embodiment of direct-current grid busbar voltage.
Fig. 2 is the structural representation of one embodiment of the DC micro power grid system of the present invention.
Fig. 3 is the schematic diagram of one embodiment of the energy-storage battery droop characteristic of the present invention.
Fig. 4 is the schematic diagram of one embodiment of the energy-storage battery convertor controls principle of the present invention.
Fig. 5 is the schematic diagram of one embodiment of the photovoltaic converter control principle of the present invention.
Fig. 6 is the schematic diagram of one embodiment of the gas turbine convertor controls principle of the present invention.
Fig. 7 is the schematic diagram of one embodiment of the grid side converter control principle of the present invention.
Fig. 8 is the schematic diagram of one embodiment of the DC bus-bar voltage simulation waveform of the present invention.
Embodiment
Embodiments of the invention are illustrated below in conjunction with the accompanying drawings.
Fig. 1 is a kind of schematic flow sheet for controlling the stable method one embodiment of direct-current grid busbar voltage.It should
In DC micro power grid system, for example, Fig. 2 is the structure chart for the typical DC micro-grid system that the present invention is directed to.It is such as attached
Shown in Fig. 2, the system of the embodiment of the present invention only has a common bus 10, and it includes multiple distributed power sources, the distribution
Power supply may include gas turbine 20, photovoltaic cells 30 and energy-storage battery 40, wherein, gas turbine passes through AC/DC converters 21
Dc bus is accessed, for providing the non-intermittent energy, photovoltaic cells 30 access dc bus 10 by DC/DC converters 31,
Energy-storage battery 40 and two-way DC/DC converters 41 form energy-storage system, realize to and fro flow of power.DC load 50 passes through DC/
DC converters 51 are connected with dc bus 10, and AC load 60 is connected by DC/AC converters 61 with dc bus 10.Exchange is big
Power network 70 passes through two-way DC/AC converters 71 and dc bus 10（For example, isolating transformer）It is connected.
The embodiment of the present invention, can be using the stable method of the control direct-current grid busbar voltage shown in Fig. 1 come control figure 2
The stabilization of the DC bus-bar voltage of shown typical DC micro-grid system, as shown in figure 1, methods described may include：
Step S1, previously according to fluctuation range of the direct-current grid busbar voltage compared to rated voltage, by the direct current
Micro-capacitance sensor busbar voltage is divided into four levels.
Step S2, according to actual fluctuation situation of the busbar voltage of the direct-current grid compared to the rated voltage,
Determine that the direct-current grid busbar voltage is located at which of four levels level.
Step S3, according to the level for the busbar voltage determined, using in DC micro power grid system with the layer
The corresponding distributed power source of level maintains the stabilization of the busbar voltage.In the specific implementation, as a kind of citing, when determining
When stating the first level that busbar voltage is located in four levels, using the energy-storage battery pair in the DC micro power grid system
The direct-current grid busbar voltage remains stable；When the second layer determined the busbar voltage and be located in four levels
During level, stable is maintained to the direct-current grid busbar voltage using the photovoltaic cells in the DC micro power grid system；When true
When making the third layer level that the busbar voltage is located in four levels, using the combustion gas wheel in the direct current network system
Machine remains stable to the direct-current grid busbar voltage；When determining that the busbar voltage is located in four levels
During four levels, stable is maintained to the direct-current grid busbar voltage using the external AC network of the direct current network system.
Further, it is small when first percentage of the direct-current grid busbar voltage more than or equal to the rated voltage
In or equal to the rated voltage the second percentage when, determine that the busbar voltage is located at described in four levels
One level.
Further, when second percentage of the direct-current grid busbar voltage more than the rated voltage, it is less than or waits
When three percentage of the rated voltage, the second layer that the busbar voltage is located in four levels is determined
Level.Further, when first percentage of the direct-current grid busbar voltage less than the rated voltage, more than or equal to described
During four percentage of rated voltage, the third layer level that the busbar voltage is located in four levels is determined.
Further, when fourth percentage of the direct-current grid busbar voltage less than the rated voltage, more than described
During three percentage of rated voltage, the 4th level that the busbar voltage is located in four levels is determined.
As an example, first percentage can be 95%, and second percentage can be 105%, the 3rd percentage
Can be 108%, the 4th percentage can be 92%.That is, in the specific implementation, when 0.95U dcn<U dc<1.05U dcnWhen, bus electricity
Press offrating smaller, busbar voltage can remain stable by energy-storage battery, whereinU dcFor DC micro-electric network operation when bus
Virtual voltage,U dcnFor bus rated voltage；When 1.05U dcn<U dc<1.08U dcnWhen, load power is less than the supply power of system,
Busbar voltage persistently rises, and busbar voltage is maintained by photovoltaic cells；When 0.92U dcn<U dc<0.95U dcnWhen, gas turbine starts short
When maintain DC bus-bar voltage stable；WhenU dc>1.08U dcnOrU dc<0.92U dcnWhen, DC bus-bar voltage fluctuation range is larger,
Distributed power source output power and workload demand unbalanced power, direct-current grid interconnect with AC distribution net, and net surveys converter
Enable, maintain DC bus-bar voltage stable.It should be noted that the division of above-mentioned percentage is only for example, in the specific implementation,
Various percentages can be modified according to the actual requirements, and the percentage of these changes also belongs to the category that the present invention protects.
In addition, when busbar voltage is maintained to stablize by energy-storage battery 40, to prevent 40 frequent discharge and recharge of energy-storage battery to electricity
The infringement of pond performance, voltage is in 0.98 Udcn（Udcn refers to bus rated voltage）When between ~ 1.02Udcn, energy-storage units can be located
In static off position（As shown in the curve a in Fig. 3）, it is allowed to busbar voltage Udc is freely fluctuated within this range.If bus
After voltage exceeds the scope, energy-storage battery 40 is then by absorbing or power output is to maintain power supply lotus power-balance.With energy storage electricity
The two-way DC/DC converters 41 that pond 40 connects use adaptive droop control.Ibmax and Ibmin be respectively energy-storage battery 40 most
Big discharge current and minimum charge current.UH2, UH1 refer to that energy-storage battery 40 is certainly when busbar voltage Udc is higher than rated value Udcn
The higher limit and lower limit of droop control are adapted to, now energy-storage battery 40 enters charging working condition（Such as the sagging curve in Fig. 3
Shown in b）；UL1, UL2 refer to the upper limit of the adaptive sagging control of when busbar voltage Udc is less than rated value Udcn energy-storage battery 40
Value and lower limit, the now entrance of energy-storage battery 40 electric discharge working condition（As shown in the sagging curve c in Fig. 3）.This specific implementation
UH2, UH1, UL1, UL2 are respectively set as 1.05Udcn, 1.02Udcn, 0.98Udcn, 0.95Udcn in example.Energy-storage battery converts
Device 41 is controlled using double PI, adaptive droop control is introduced into the outer voltage control of converter, its control process such as accompanying drawing 4
It is shown.
Further, when busbar voltage is located at the second level, distributed power generation power output is more than workload demand power, light
Unit 30 is lied prostrate to control using busbar voltage（Such as double PI controls）Pattern maintains busbar voltage stable.Busbar voltage controlling unit according to
The reference voltage of outer voltage is calculated according to droop characteristic.In addition, when distributed power generation power output is less than load side demand
Power, photovoltaic cells 30 use maximum power tracing control model（MPPT）Maximum Power Output is controlled, busbar voltage is by other
Maintain（For example, when busbar voltage is located at third layer level, busbar voltage controls it stable by gas turbine 20）.MPPT is controlled
Controlled using double PI.The reference voltage of outer voltage, photovoltaic list are calculated using increment conductance method for maximum power tracing control
As shown in Figure 5, IL therein is the output current of photovoltaic converter to the control process of first converter.
Further, when busbar voltage is located at third layer level, voltage enables gas turbine 20 when declining larger female to direct current
Line voltage is controlled, to improve the clean energy resource utilization rate of direct-current grid.Gas turbine 20 in direct-current grid can be
Switch between constant pressure and idle both of which.Gas turbine 20 is also controlled using double PI, and the la tension de reference Uref est of outer voltage takes
It is worth for 0.94Udcn.Gas turbine control system control process is as shown in Figure 6.IL therein is the defeated of gas turbine converter
Go out electric current.
Further, when busbar voltage is located at four levels, power distribution network accesses dc bus by AC/DC converters 61
On, now DC micro power grid system power swing scope is very big, and net survey converter, which then enables, maintains DC bus-bar voltage constant.Such as
Shown in Fig. 7, the use double closed-loop decoupling control of AC-DC converter 61, wherein outer shroud are controlled for voltage and Reactive Power Control, inner ring
For current loop control.Key-course according to where DC bus-bar voltage determines the reference value of DC bus-bar voltage.Work as dc bus
Voltage Udc>During 1.08Udcn, busbar voltage reference value is set as 1.09Udcn；Work as Udc<During 0.92Udcn, dc bus is set
Reference voltage is 0.91Udcn.Reactive power reference qref Qref is obtained by the control targe of the output reactive power of AC-DC converter 60
.
In addition, in embodiments of the present invention, there are two kinds of work in each distributed power source in DC micro power grid system
Pattern：Isobarically Control pattern and power control mode.Isobarically Control pattern realizes the control to busbar voltage, power control mode
Then control the power of power supply output or input.
For above-mentioned specific embodiment, a kind of simulation waveform of busbar voltage can be obtained as shown in Figure 8.Wherein, 0≤t
During ＜ 2s, busbar voltage is used as voltage control unit in the first key-course, energy-storage battery 50, and busbar voltage is maintained at rated value
400V；During 2s≤t ＜ 4s, photovoltaic cells 30 are switched to Isobarically Control pattern from maximum power tracing control, and busbar voltage maintains
In 424V；During 4s≤t ＜ 6s, grid side converter 70 is devoted oneself to work, and adjusts busbar voltage, and busbar voltage is controlled in 436V, photovoltaic
Unit 30 is switched to MPPT mode of operations；During 6s≤t ＜ 8s, energy-storage battery 50 is operated under discharge mode and adjusts busbar voltage,
Grid side converter 60 is stopped；During 8s≤t ＜ 10s, the SOC of energy-storage battery 50 is less than 10%, to prevent the depth of energy-storage battery 50
Electric discharge damage, energy-storage battery 50 to caused by battery are stopped.The power output of photovoltaic is less than local load demand power, combustion
Gas-turbine 20 starts power output, and busbar voltage is controlled in 376V.To improve micro-capacitance sensor power supply reliability, energy-storage battery 50 is carried out
Charging energy-storing；During 10s≤t ＜ 12s, now system power fluctuation is larger, and grid side converter 60 is devoted oneself to work, grid side converter 60
Busbar voltage is maintained not worked in 364V, energy-storage battery 50 and gas turbine 20；During 12s≤t ＜ 14s, direct-current grid is cut off
In all loads, now direct-current grid not on-load.Grid side converter 60 is stopped, and busbar voltage is by energy-storage battery 50
Maintain 400V.Because workload demand power is 0, and the SOC of energy-storage battery 50 is more than 90%, so each point of micro-capacitance sensor
Cloth power supply is stopped, and its power output is 0W.
In summary, embodiments of the invention pass through a kind of method for controlling direct-current grid busbar voltage stable, a side
Face, effectively increases the stability of DC micro power grid system, while improves the running independence of direct-current grid；The opposing party
Face, improve direct-current grid uses category, so as to realize maximally utilizing for clean energy resource.
Above disclosure is only preferred embodiment of present invention, can not limit the right model of the present invention with this certainly
Enclose, therefore the equivalent variations made according to the claims in the present invention, still belong to the scope that the present invention is covered.
Claims (13)
- A kind of 1. method for controlling direct-current grid busbar voltage stable, it is characterised in that including：Step S1, previously according to fluctuation range of the direct-current grid busbar voltage compared to rated voltage, by the direct current Micro-capacitance sensor busbar voltage is divided into four levels；Step S2, according to actual fluctuation situation of the busbar voltage of the direct-current grid compared to the rated voltage, it is determined that The direct-current grid busbar voltage is located at which of four levels level；Step S3, according to the level for the busbar voltage determined, using in DC micro power grid system with the level phase Corresponding distributed power source maintains the stabilization of the busbar voltage.
- 2. according to the method for claim 1, it is characterised in that：When determining the first level that the busbar voltage is located in four levels, using the DC micro power grid system In energy-storage battery stable is maintained to the direct-current grid busbar voltage；When determining the second level that the busbar voltage is located in four levels, using the DC micro power grid system In photovoltaic cells stable is maintained to the direct-current grid busbar voltage；When determining third layer level that the busbar voltage is located in four levels, using in the direct current network system Gas turbine stable is maintained to the direct-current grid busbar voltage；When determining four level that the busbar voltage is located in four levels, using the direct current network system outside The AC network connect remains stable to the direct-current grid busbar voltage.
- 3. according to the method for claim 2, it is characterised in that when the direct-current grid busbar voltage is more than or equal to institute State the first percentage of rated voltage, less than or equal to the rated voltage the second percentage when, determine the busbar voltage First level in four levels.
- 4. according to the method for claim 3, it is characterised in that first percentage is 95%, and second percentage is 105%。
- 5. according to the method for claim 3, it is characterised in that when the direct-current grid busbar voltage is more than described specified Second percentage of voltage, less than or equal to the rated voltage three percentage when, determine that the busbar voltage is located at institute State second level in four levels.
- 6. according to the method for claim 5, it is characterised in that the 3rd percentage is 108%.
- 7. according to the method for claim 5, it is characterised in that when the direct-current grid busbar voltage is less than described specified First percentage of voltage, more than or equal to the rated voltage four percentage when, determine that the busbar voltage is located at institute State the third layer level in four levels.
- 8. according to the method for claim 7, it is characterised in that the 4th percentage is 92%.
- 9. according to the method for claim 7, it is characterised in that when the direct-current grid busbar voltage is less than described specified 4th percentage of voltage, more than the rated voltage three percentage when, determine the busbar voltage be located at described four The 4th level in level.
- 10. according to the method any one of claim 2-4, it is characterised in that the energy-storage battery is specifically using adaptive Droop control mode is answered to maintain the stabilization of the direct-current grid busbar voltage.
- 11. according to the method any one of claim 2,5-6, it is characterised in that the photovoltaic cells are specifically using double PI control modes maintain the stabilization of the direct-current grid busbar voltage.
- 12. according to the method any one of claim 2,7-8, it is characterised in that the gas turbine is specifically using double PI control modes maintain the stabilization of the direct-current grid busbar voltage.
- 13. according to the method for claim 1, it is characterised in that when using in DC micro power grid system with the level phase Corresponding distributed power source maintain the busbar voltage it is stable when, the corresponding distributed power source is operated in Isobarically Control Pattern, other distributed power sources are operated in power control mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710847736.6A CN107681649B (en) | 2017-09-19 | 2017-09-19 | Method for controlling voltage stability of direct-current micro-grid bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710847736.6A CN107681649B (en) | 2017-09-19 | 2017-09-19 | Method for controlling voltage stability of direct-current micro-grid bus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107681649A true CN107681649A (en) | 2018-02-09 |
| CN107681649B CN107681649B (en) | 2021-03-19 |
Family
ID=61135728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710847736.6A Active CN107681649B (en) | 2017-09-19 | 2017-09-19 | Method for controlling voltage stability of direct-current micro-grid bus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107681649B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109866643A (en) * | 2019-03-29 | 2019-06-11 | 清华大学 | Direct-current micro-grid control method is filled in a kind of storage of light |
| CN110365005A (en) * | 2019-07-16 | 2019-10-22 | 广东工业大学 | A kind of Virtual Controller for direct current micro-grid system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305480A (en) * | 2015-07-13 | 2016-02-03 | 陕西省地方电力（集团）有限公司 | Hybrid energy-storage DC micro grid hierarchical control method |
-
2017
- 2017-09-19 CN CN201710847736.6A patent/CN107681649B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305480A (en) * | 2015-07-13 | 2016-02-03 | 陕西省地方电力（集团）有限公司 | Hybrid energy-storage DC micro grid hierarchical control method |
Non-Patent Citations (1)
| Title |
|---|
| 刘家赢等: ""直流微电网运行控制策略"", 《电网技术》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109866643A (en) * | 2019-03-29 | 2019-06-11 | 清华大学 | Direct-current micro-grid control method is filled in a kind of storage of light |
| CN109866643B (en) * | 2019-03-29 | 2020-07-10 | 清华大学 | Light storage and charging direct-current micro-grid control method |
| CN110365005A (en) * | 2019-07-16 | 2019-10-22 | 广东工业大学 | A kind of Virtual Controller for direct current micro-grid system |
| CN110365005B (en) * | 2019-07-16 | 2021-05-11 | 广东工业大学 | Virtual controller for direct-current microgrid system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107681649B (en) | 2021-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103647274B (en) | A kind of for can the energy control method of grid-connected and micro-grid system from network operation | |
| CN103647302B (en) | Double-layer coordinating and controlling method of multi-sub microgrid-contained mixed microgrid system | |
| CN202651785U (en) | AC/DC mixed type micro-grid system | |
| CN102738836B (en) | Alternating current and direct current hybrid micro power grid system and control method thereof | |
| CN104821607A (en) | Photovoltaic microgrid power equalization control method based on three-end cooperative control | |
| CN107579698A (en) | A kind of photovoltaic plant energy storage method | |
| CN105763085B (en) | Energy storage grid-connected converter and its control method based on three level of inverse-impedance type | |
| WO2022142812A1 (en) | Multi-end offshore wind power flexible direct current and energy storage cooperative grid-connected system and control method thereof | |
| CN105743127A (en) | Household new energy power generation intelligent control system and control method | |
| CN109698495B (en) | Super capacitor-based direct-current micro-grid system | |
| CN110556856A (en) | communication-independent multi-mode electric energy router and seamless switching control method thereof | |
| Jia et al. | Architecture design for new AC-DC hybrid micro-grid | |
| CN202488205U (en) | Novel serial-parallel conversion-type UPS | |
| CN105429128A (en) | DC micro grid bus voltage control strategy based on hybrid energy storage | |
| CN103280844B (en) | Alternating/direct current hybrid multi-level micro grid system | |
| CN106786485A (en) | For the mains ripple suppressing method of direct-current grid under unbalanced load | |
| CN109904879A (en) | A kind of isolated network micro-capacitance sensor frequency control method of hybrid power system | |
| CN108347067A (en) | A kind of microgrid framework and control method containing battery energy storage and generator | |
| CN105429462B (en) | The control system of the multi-functional grid-connection converter of a kind of twin-stage and method thereof | |
| CN107681649A (en) | A kind of method for controlling direct-current grid busbar voltage stable | |
| CN204721000U (en) | A kind of friendly and expand grid-connected power generation system flexibly to electrical network | |
| CN206517078U (en) | A kind of Thief zone is than cold, heat and electricity triple supply mixed type intelligent micro-grid | |
| CN108400720A (en) | Interleaving inverse excitation type inverter control method and control circuit, power-supply system | |
| Xu et al. | Energy management and control strategy for DC micro-grid in data center | |
| CN110365005A (en) | A kind of Virtual Controller for direct current micro-grid system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20191122 Address after: Luohu District Shenzhen Shennan Road 518000 No. 4020 Guangdong provincial power dispatching center building Applicant after: Shenzhen Power Supply Co.,Ltd. Address before: Luohu District Shenzhen Shennan Road 518000 No. 4020 Guangdong provincial power dispatching center building Applicant before: Shenzhen Power Supply Co.,Ltd. Applicant before: Shandong University of Technology |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |