CN207368659U - A kind of system-level direct-current grid control device - Google Patents
A kind of system-level direct-current grid control device Download PDFInfo
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- CN207368659U CN207368659U CN201721262914.0U CN201721262914U CN207368659U CN 207368659 U CN207368659 U CN 207368659U CN 201721262914 U CN201721262914 U CN 201721262914U CN 207368659 U CN207368659 U CN 207368659U
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Abstract
The utility model discloses a kind of system-level direct-current grid control device, including gate drivers, stepping-up/stepping-down chopper circuit, voltage collection circuit, voltage hierarchical algorithm circuit and switch watch circuit.The distributed generation resource output is connected with boost chopper input；Boost chopper is exported to be connected with load, stepping-up/stepping-down chopper circuit input and voltage collection circuit input；Voltage collection circuit is exported to be connected with the input of voltage hierarchical algorithm circuit；Voltage hierarchical algorithm circuit output is connected with switch watch circuit input；Switch list circuit output is inputted with gate drivers 1 and the input of gate drivers 2 connects；The output of gate drivers 1 is connected with boost chopper power tube；The output of gate drivers 2 is connected with stepping-up/stepping-down chopper circuit power tube；Stepping-up/stepping-down chopper circuit output is connected with storage battery.The utility model is a kind of system-level direct-current grid control device, the control device is using PI controls and PWM pulse modulation technologies, based on direct-current grid busbar voltage fluctuation situation that may be present in the process of running, set voltage layering, and formulate a switch list, it is proposed the Coordinated Control Scheme between distributed generation resource, energy-storage system, and the feasibility of the control device is demonstrated in emulation experiment.
Description
Technical field
The utility model patent is related to direct-current grid control technology field, more particularly, to a kind of system-level DC micro-electric
Net control device.
Background technology
Since power industry comes out, the mankind produce electricity energy all the time by the consumption next life of fossil energy, but with society
The development of meeting science and technology, sharply increases the demand of electric energy, while what is brought is environmental protection problem and lack of energy crisis.But
It is that in industrial technology highly developed today, many clean energy resourcies start to emerge in large numbers, the DC micro-electric risen based on regenerative resource
Net has become an Efficient Development clean energy resource and reduces the important channel of environmental pollution, and the electric energy of direct-current grid is by being distributed
Formula power supply produces, and since the power generation of distributed generation resource has periodically interval and fluctuation, injects the reality of direct-current grid
When power it is also and unstable, in order to ensure the stabilization of DC bus-bar voltage, the dynamic equilibrium of power is maintained, in practical application
The some disturbances of middle Chang Yinwei and cause the voltage of direct-current grid to produce fluctuation, how design control method can make its busbar voltage
It is instantly anxious to keep stabilization.
Utility model content
The purpose of this utility model is to solve problems faced in above-mentioned DC micro-electric network operation, there is provided a kind of Novel direct
Flow micro-capacitance sensor control device.The control device was being run using PI controls and PWM pulse modulation technologies according to direct-current grid
Busbar voltage fluctuation situation that may be present in journey, setting voltage layering, and a switch list is formulated, proposition distributed generation resource,
Coordinated Control Scheme between energy-storage system, and demonstrate in emulation experiment the feasibility of the control device.
Technical solution is used by the utility model：
A kind of system-level direct-current grid control device, including distributed generation resource, gate drivers, buck copped wave electricity
Road, voltage collection circuit, voltage hierarchical algorithm circuit and switch watch circuit.The output of the distributed generation resource and boost chopper electricity
Road input connection；Boost chopper is exported to be connected with load, stepping-up/stepping-down chopper circuit input and voltage collection circuit input；Electricity
Acquisition Circuit output is pressed to be connected with the input of voltage hierarchical algorithm circuit；Voltage hierarchical algorithm circuit output and switch watch circuit input
Connection；Switch list circuit output is inputted with gate drivers 1 and the input of gate drivers 2 connects；Gate drivers 1 are exported and risen
Press the connection of chopper circuit power tube；The output of gate drivers 2 is connected with stepping-up/stepping-down chopper circuit power tube；Stepping-up/stepping-down chopper circuit
Output is connected with storage battery.
The voltage collection circuit uses Hall voltage sensor CHV-50P.
The voltage hierarchical algorithm is controlled using 80C51 microcontrollers.
The switch watch circuit is controlled using 80C51 microcontrollers.
The MIC4423 chips that the gate drivers use.
SGW25N120 type IGBT crystal of the boost chopper with stepping-up/stepping-down chopper circuit by Siemens Company
Pipe is built with inductance.
Brief description of the drawings
Fig. 1 is the structure diagram of Tthe utility model system
Fig. 2 is the instance graph of Tthe utility model system
Fig. 3 is the voltage hierarchical diagram of Tthe utility model system
Fig. 4 is the voltage hierarchical algorithm flow chart of Tthe utility model system
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings, and the description is only explaining the utility model.
As shown in Figure 1, a kind of system-level direct-current grid control device, including distributed generation resource, gate drivers, lifting
Press chopper circuit, voltage collection circuit, voltage hierarchical algorithm circuit and switch watch circuit.The output of the distributed generation resource and liter
Press chopper circuit input connection；Boost chopper exports defeated with load, stepping-up/stepping-down chopper circuit input and voltage collection circuit
Enter connection；Voltage collection circuit is exported to be connected with the input of voltage hierarchical algorithm circuit；Voltage hierarchical algorithm circuit output and switch
Watch circuit input connection；Switch list circuit output is inputted with gate drivers 1 and the input of gate drivers 2 connects；Raster data model
The output of device 1 is connected with boost chopper power tube；The output of gate drivers 2 is connected with stepping-up/stepping-down chopper circuit power tube；Rise
Buck circuit output is connected with storage battery.
The voltage collection circuit uses Hall voltage sensor CHV-50P.
The voltage hierarchical algorithm is controlled using 80C51 microcontrollers.
The switch watch circuit is controlled using 80C51 microcontrollers.
The MIC4423 chips that the gate drivers use.
SGW25N120 type IGBT crystal of the boost chopper with stepping-up/stepping-down chopper circuit by Siemens Company
Pipe is built with inductance.
As shown in Fig. 2 examples, the bus voltage signal collected is input to voltage hierarchical algorithm electricity by voltage collection circuit
Lu Zhong, voltage hierarchical algorithm circuit output voltage layering numbering, then switchs watch circuit and is compiled by output voltage layering of tabling look-up
Control signal corresponding to number, control signal act on gate drivers, drive corresponding chopper circuit.
As shown in figure 3, being interval with the 5% of busbar voltage reference value, 4 voltages are set to be layered critical value, i.e. VH2=
100%Vdc_ref、VH1=105%Vdc_ref、VL1=95%Vdc_ref、VL2=90%Vdc_ref, busbar voltage is divided into 5 controls
Region processed.The voltage algorithm flow of Fig. 4 can realize analog/digital conversion on 80C51 microcontrollers.
As shown in table 1, " 1 " represents closure, and " 0 " represents shut-off.During region 1, in stable state, storage battery neither charges
Also do not discharge；During region 2, busbar voltage is somewhat high, therefore storage battery opens charge mode；During region 3,4, busbar voltage
It is too low, therefore storage battery opens discharge mode；During region 5, busbar voltage is excessive, therefore temporarily disconnected distributed generation resource, opens
Battery charging mode.So total energy maintains the power-balance in direct-current grid, keeps busbar voltage to stablize.
1 switch list truth table of table
Active power balance, i.e. distributed electrical in direct-current grid are ensured under different operating modes using the control of voltage hierarchical coordinative
The power that the power that source is sent is equal to load consumption adds the power that storage battery absorbs, and achievees the purpose that stable busbar voltage, real
The function of existing direct-current grid " plug and play ".
Claims (6)
- A kind of 1. system-level direct-current grid control device, it is characterised in that：Including distributed generation resource, gate drivers, lifting Press chopper circuit, voltage collection circuit, voltage hierarchical algorithm circuit and switch watch circuit, the output of the distributed generation resource and liter Press chopper circuit input connection；Boost chopper exports defeated with load, stepping-up/stepping-down chopper circuit input and voltage collection circuit Enter connection；Voltage collection circuit is exported to be connected with the input of voltage hierarchical algorithm circuit；Voltage hierarchical algorithm circuit output and switch Watch circuit input connection；Switch list circuit output is inputted with gate drivers 1 and the input of gate drivers 2 connects；Raster data model The output of device 1 is connected with boost chopper power tube；The output of gate drivers 2 is connected with stepping-up/stepping-down chopper circuit power tube；Rise Buck circuit output is connected with storage battery.
- A kind of 2. system-level direct-current grid control device described in accordance with the claim 1, it is characterised in that：The voltage is adopted Collector uses Hall voltage sensor CHV-50P.
- A kind of 3. system-level direct-current grid control device described in accordance with the claim 1, it is characterised in that：The voltage point Layer algorithm is controlled using 80C51 microcontrollers.
- A kind of 4. system-level direct-current grid control device described in accordance with the claim 1, it is characterised in that：The switch list Circuit is controlled using 80C51 microcontrollers.
- A kind of 5. system-level direct-current grid control device described in accordance with the claim 1, it is characterised in that：The grid drives The MIC4423 chips that dynamic device uses.
- A kind of 6. system-level direct-current grid control device described in accordance with the claim 1, it is characterised in that：The boosting is cut Wave circuit is built with stepping-up/stepping-down chopper circuit by the SGW25N120 types igbt transistor of Siemens Company with inductance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721262914.0U CN207368659U (en) | 2017-09-28 | 2017-09-28 | A kind of system-level direct-current grid control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721262914.0U CN207368659U (en) | 2017-09-28 | 2017-09-28 | A kind of system-level direct-current grid control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207368659U true CN207368659U (en) | 2018-05-15 |
Family
ID=62346938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721262914.0U Expired - Fee Related CN207368659U (en) | 2017-09-28 | 2017-09-28 | A kind of system-level direct-current grid control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207368659U (en) |
-
2017
- 2017-09-28 CN CN201721262914.0U patent/CN207368659U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180515 Termination date: 20180928 |
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| CF01 | Termination of patent right due to non-payment of annual fee |