CN210957804U - Power regulation control system of virtual synchronous generator - Google Patents
Power regulation control system of virtual synchronous generator Download PDFInfo
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- CN210957804U CN210957804U CN201921910070.5U CN201921910070U CN210957804U CN 210957804 U CN210957804 U CN 210957804U CN 201921910070 U CN201921910070 U CN 201921910070U CN 210957804 U CN210957804 U CN 210957804U
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Abstract
The utility model provides a virtual synchronous generator power adjustment control system belongs to power electronic technology field. The power regulation control system includes: the system comprises a power grid, a virtual synchronous generator, a distributed power supply, a power and energy detection module, a microcontroller, a power regulation module, a PWM control module 1, a DC/DC converter, a PWM control module 2 and an energy storage battery module; the utility model discloses can adjust virtual synchronous generator's power setting value through power regulation module, when distributed generator and energy storage battery are not enough to provide sufficient power regulation module can adjust virtual synchronous generator's power setting value and maintain virtual synchronous generator's output voltage and frequency stability, reduce the harm to electric wire netting and virtual synchronous generator.
Description
Technical Field
The utility model provides a power regulation system of virtual synchronous machine belongs to power electronic technology field.
Background
With the rapid rise of renewable energy and smart grid industries, wind energy and solar energy become the absolute main force of new energy power generation, but have the characteristics of large fluctuation, difficult prediction and the like.
Although the energy storage battery has the characteristics of fast scheduling response, flexible configuration, accurate control and the like, when the energy of the energy storage battery is insufficient and is in a power utilization peak period, the virtual synchronous generator may cause the change of the output voltage amplitude and the frequency of the virtual synchronous generator due to the insufficient power so as to influence a power grid; when the power supply is insufficient, the problem of how to ensure that the voltage amplitude and the frequency of the virtual synchronous generator are not changed needs to be solved.
Disclosure of Invention
The utility model aims at providing a virtual synchronous generator power adjusts control system to overcome and improve when virtual synchronous generator power is not enough, the voltage amplitude and the problem of frequency change of virtual synchronous generator power.
The utility model discloses take following technical scheme to realize: a virtual synchronous generator power regulation control system, the system comprising: the power supply comprises a power grid, a virtual synchronous generator, a distributed power supply, a power and energy detection module, a microcontroller, a power regulation module, a PWM control module 1, a DC/DC converter, a PWM control module 2 and an energy storage battery module, wherein the output end of the distributed power supply is respectively connected with the power and energy detection module and the DC/DC converter; the output end of the DC/DC converter is connected with the energy storage battery module and the virtual synchronous generator; the output end of the virtual synchronous generator is connected with a power grid; the output end of the energy storage battery module is respectively connected with the power and energy detection module and the DC/DC converter; the output end of the power and energy detection module is connected with the microcontroller; the output end of the microcontroller is connected with the PWM control module 1 and the PWM control module 2; the output end of the PWM control module 1 is connected with the power regulation module; the output end of the power regulating module is connected with the virtual synchronous generator; and the output end of the PWM control module 2 is connected with the DC/DC converter.
The utility model discloses an one-step optimization, power regulation module can guarantee that virtual synchronous generator's output is stable through adjusting virtual synchronous generator's settlement power value.
The utility model discloses an one-step optimization, power and energy detection module judge the surplus of energy storage battery energy through the voltage that detects energy storage battery, judge whether need change virtual synchronous generator's power setting value or with energy storage battery input use through the power that detects distributed generator and send out.
The utility model discloses an one-step optimization, microcontroller adopt be that STM32F429IGH6 singlechip adjusts virtual synchronous generator's the setting power value and changes energy storage battery's charge-discharge state.
The utility model discloses an one-step optimization, DC/DC converter adopt can carry out the isolated form DC/DC converter of two-way energy transmission in CLLC resonant converter it have possess excellent two-way soft switch, can realize high efficiency and high power density's ability to the realization provides invariable voltage source for the virtual machine.
The utility model discloses an one-step optimization, PWM control module 1, the PWM controller that PWM control module 2 adopted be uc3842, it has the pin effect less, peripheral circuit is simple, voltage regulation can reach 0.01%, operating frequency is the highest, advantages such as the pick-up current is little.
The utility model has the advantages that: the utility model can change the set power value of the virtual synchronous generator according to the energy of the energy storage battery and the power provided by the distributed power supply, thereby ensuring that the output voltage amplitude and the frequency of the virtual synchronous generator are unchanged; and the ability of the distributed power supply to provide power can determine whether the energy storage battery is in a discharge state or a charge state, thereby reducing the waste of energy and the damage to the power grid.
Drawings
For a clearer explanation, the power regulation control system of the virtual synchronous generator according to the present invention will be described in detail with reference to the accompanying drawings and the following detailed description.
Fig. 1 is a schematic structural diagram of a power regulation control system of a virtual synchronous generator according to an embodiment of the present invention.
Fig. 2 is an active ring schematic diagram of a virtual synchronous generator according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a reactive ring of a virtual synchronous generator according to an embodiment of the present invention.
Fig. 4 is a DC/DC converter according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings in conjunction with embodiments.
The present embodiment is described with reference to fig. 1, and an embodiment of the present invention is a power regulation control system for a virtual synchronous generator, including: the power supply comprises a power grid, a virtual synchronous generator, a distributed power supply, a power and energy detection module, a microcontroller, a power regulation module, a PWM control module 1, a DC/DC converter, a PWM control module 2 and an energy storage battery module, wherein the output end of the distributed power supply is respectively connected with the power and energy detection module and the DC/DC converter; the output end of the DC/DC converter is connected with the energy storage battery module and the virtual synchronous generator; the output end of the virtual synchronous generator is connected with a power grid; the output end of the energy storage battery module is respectively connected with the power and energy detection module and the DC/DC converter; the output end of the power and energy detection module is connected with the microcontroller; the output end of the microcontroller is connected with the PWM control module 1 and the PWM control module 2; the output end of the PWM control module 1 is connected with the power regulation module; the output end of the power regulating module is connected with the virtual synchronous generator; and the output end of the PWM control module 2 is connected with the DC/DC converter. The control system changes the power set value of the virtual synchronous generator by adding the microcontroller, so that the amplitude and the frequency of the output voltage of the virtual synchronous generator are kept unchanged, and the pollution to a power grid is reduced; and the power and energy detection module added in the system determines the working state of the DC/DC converter by detecting the output power of the distributed power supply and the energy of the energy storage battery, so that the utilization efficiency of the energy storage battery is improved.
The present embodiment is described with reference to fig. 1, 2, 3, and 4, and the working principle of the embodiment of the present invention is as follows:
when the power and energy detection module detects that the power provided by the distributed power supply is smaller than the power set value of the virtual synchronous generator and the energy of the energy storage battery is sufficient, the microcontroller controls the PWM control module 2 to drive the switch of the MOSFET so that the circuit is in a Boost mode and the energy storage battery discharges; when the power and energy detection module detects that the power provided by the distributed power supply is greater than the power set value of the virtual synchronous generator, the microcontroller controls the PWM control module 2 to drive the switch of the MOSFET so that the circuit is in a Buck mode for charging the energy storage battery.
When the power provided by the distributed power supply is not enough to maintain the amplitude and the frequency of the output voltage of the virtual synchronous generator to be stable and detect that the energy of the energy storage battery is insufficient, the microcontroller controls the PWM control module 2 to drive the switch of the MOSFET to stop the energy transmission of the energy storage battery to the power grid; and controlling the PWM control module 1 to control the power regulating module to regulate the power set value of the virtual synchronous generator, so that the power set value of the virtual synchronous generator is matched with the output power of the distributed power supply, and the damage to a power grid and the virtual synchronous generator caused by insufficient power supply is reduced.
The above description is only for the preferred embodiment of the present invention, but not for limiting the present invention, and various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the present invention, therefore, the protection scope of the present invention should be subject to the claims.
Claims (6)
1. The virtual synchronous generator power regulation control system is characterized by comprising: the power grid, the virtual synchronous generator, the distributed power supply, the power and energy detection module, the microcontroller, the power regulation module, the PWM control module 1, the DC/DC converter, the PWM control module 2 and the energy storage battery module, wherein the output end of the distributed power supply is respectively connected with the power and energy detection module and the DC/DC converter, the output end of the DC/DC converter is connected with the energy storage battery module and the virtual synchronous generator, the output end of the virtual synchronous generator is connected with the power grid, the output end of the energy storage battery module is respectively connected with the power and energy detection module and the DC/DC converter, the output end of the power and energy detection module is connected with the microcontroller, the output end of the microcontroller is connected with the PWM control module 1 and the PWM control module 2, the output end of the PWM control module 1 is connected with the power regulation module, and the output end of the power regulation, the output end of the PWM control module 2 is connected with the DC/DC converter.
2. The virtual synchronous generator power regulation control system of claim 1, wherein: the power adjusting module can ensure the output stability of the virtual synchronous generator by adjusting the set power value of the virtual synchronous generator.
3. The virtual synchronous generator power regulation control system of claim 1, wherein: the power and energy detection module judges the surplus of the energy storage battery by detecting the voltage of the energy storage battery, and judges whether the power set value of the virtual synchronous generator needs to be changed or the energy storage battery is put into use by detecting the power sent by the distributed power supply.
4. The virtual synchronous generator power regulation control system of claim 1, wherein: the microcontroller adopts an STM32F429IGH6 singlechip to adjust the set power value of the virtual synchronous generator and change the charging and discharging state of the energy storage battery.
5. The virtual synchronous generator power regulation control system of claim 1, wherein: the DC/DC converter adopts a CLLC resonance converter in an isolation type DC/DC converter capable of bidirectional energy transmission, and realizes that a constant voltage source is provided for the virtual machine.
6. The virtual synchronous generator power regulation control system of claim 1, wherein: the PWM controller adopted by the PWM control module 1 and the PWM control module 2 is SG 3525.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921910070.5U CN210957804U (en) | 2019-11-07 | 2019-11-07 | Power regulation control system of virtual synchronous generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921910070.5U CN210957804U (en) | 2019-11-07 | 2019-11-07 | Power regulation control system of virtual synchronous generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210957804U true CN210957804U (en) | 2020-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921910070.5U Expired - Fee Related CN210957804U (en) | 2019-11-07 | 2019-11-07 | Power regulation control system of virtual synchronous generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210957804U (en) |
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2019
- 2019-11-07 CN CN201921910070.5U patent/CN210957804U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200707 Termination date: 20201107 |
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| CF01 | Termination of patent right due to non-payment of annual fee |