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Damping control method and device for virtual synchronous machine and storage medium

A technology of virtual synchronous machine and damping control, which is applied in the direction of circuit devices, AC network circuits, electrical components, etc., and can solve problems such as frequency deviation and prone to instability

Inactive Publication Date: 2021-01-05
NANJING GUODIAN NANZI POWER GRID AUTOMATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, since the virtual synchronous machine introduces the rotor inertia link of the simulated synchronous generator, it is prone to unstable problems
At the same time, if the damping control is simply introduced, there will be a problem of frequency deviation

Method used

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  • Damping control method and device for virtual synchronous machine and storage medium
  • Damping control method and device for virtual synchronous machine and storage medium
  • Damping control method and device for virtual synchronous machine and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] This embodiment introduces a virtual synchronous machine damping control method, including:

[0036] Obtain the frequency reference command output by the virtual synchronous machine control module in real time;

[0037] calculating a frequency damping control command according to the frequency reference command;

[0038] calculating a power damping command according to the frequency reference command and the frequency damping control command;

[0039] The opposite number of the power damping command is superimposed on the power input command of the original virtual synchronous machine control module, so that the virtual synchronous machine control module obtains the frequency reference command for the virtual synchronous machine control at the next moment according to the superimposed power input command.

[0040] The method specifically includes the following steps.

[0041] S1, obtain the frequency reference command f output by the control module of the virtual sync...

Embodiment 2

[0053] Based on the same inventive concept as Embodiment 1, this embodiment introduces a virtual synchronous machine damping control device, including:

[0054] The data acquisition module is configured to obtain the frequency reference instruction output by the virtual synchronous machine control module in real time;

[0055] The damping control first calculation module is configured to calculate and obtain the frequency damping control command according to the frequency reference command;

[0056] The second damping control calculation module is configured to calculate and obtain a power damping command according to the frequency reference command and the frequency damping control command;

[0057]The power input command determination module is configured to superimpose the opposite number of the power damping command to the power input command of the original virtual synchronous machine control module, so that the virtual synchronous machine control module can obtain the po...

Embodiment 3

[0070] This embodiment introduces a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the method for controlling damping of a virtual synchronous machine as described in Embodiment 1 is implemented.

[0071] Those skilled in the art should understand that the embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

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Abstract

The invention discloses a virtual synchronous machine damping control method and device and a storage medium. The method comprises the steps that a frequency reference instruction output by a virtualsynchronous machine control module is acquired in real time; calculating to obtain a frequency damping control instruction according to the frequency reference instruction; calculating to obtain a power damping control instruction according to the frequency reference instruction and the frequency damping control instruction; and superposing the opposite number of the power damping instruction to apower input instruction of an original virtual synchronous machine control module, so that the virtual synchronous machine control module obtains a frequency reference instruction for virtual synchronous machine control at the next moment according to the superposed power input instruction. According to the method, the damping control process is introduced into the control of the virtual synchronous machine, the virtual synchronous machine can be more stable during active frequency control, and meanwhile, the introduced damping control does not play a role in a steady state, so that the condition of frequency deviation caused by the introduction of the damping control does not occur.

Description

technical field [0001] The invention relates to the technical field of virtual synchronous machines, in particular to a virtual synchronous machine damping control method, device and storage medium. Background technique [0002] The virtual synchronous machine technology simulates the electromechanical transient characteristics of the synchronous generator, so that the inverter has the same external characteristics as the synchronous generator such as inertia and damping. It can not only adjust the power generation or load power in real time according to the frequency and voltage changes of the grid to meet the needs of primary frequency regulation and primary voltage regulation, but also provide networking voltage in the form of a voltage source to improve system stability. [0003] However, because the virtual synchronous machine introduces the rotor inertia link of the simulated synchronous generator, it is prone to unstable problems. At the same time, if the damping con...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J3/24H02J3/48
CPCH02J3/381H02J3/241H02J3/48H02J2203/20
Inventor 欧阳逸风何华伟明镜刘嘉温富光邹宇
Owner NANJING GUODIAN NANZI POWER GRID AUTOMATION CO LTD
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