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Virtual synchronous generator control method based on droop coefficient adaptive adjustment

A technology of self-adaptive adjustment and generator control, applied in synchronous generator control, motor generator control, electronic commutation motor control, etc., can solve the deviation of output frequency and voltage amplitude of virtual synchronous motor, affecting the normal operation of electrical equipment And other issues

Active Publication Date: 2018-07-20
ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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Problems solved by technology

In the off-grid operation mode, the load change causes the output frequency and voltage amplitude of the virtual synchronous motor to deviate from the rated value, which will affect the normal operation of some electrical equipment that is sensitive to frequency and voltage amplitude changes

Method used

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  • Virtual synchronous generator control method based on droop coefficient adaptive adjustment
  • Virtual synchronous generator control method based on droop coefficient adaptive adjustment
  • Virtual synchronous generator control method based on droop coefficient adaptive adjustment

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Embodiment Construction

[0038] Through the description of the embodiments below, the specific implementation of the present invention includes the shape, structure, mutual position and connection relationship between the various parts, the function and working principle of each part, the manufacturing process and the operation and use method of the various components involved. etc., to make further detailed descriptions to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concepts and technical solutions of the present invention.

[0039] A virtual synchronous generator control method based on adaptive adjustment of droop coefficient, its structure diagram is as follows figure 1 shown. Said method comprises the following steps:

[0040] Step 1: Set the upper limit value P of VSG output active power max and the lower limit P min , set the upper limit value Q of VSG output reactive power max and the lower limit Qmin , set the VSG output rated a...

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Abstract

The invention belongs to the field of virtual synchronous motor control and particularly relates to a virtual synchronous generator control method based on droop coefficient adaptive adjustment. The problem that electrical equipment is sensitive to the change of a frequency and a voltage amplitude, and a VSG can maintain the balance of the microgrid power facing the change of a microgrid load in an off-grid operation mode, and the no-deviating regulation of the frequency and the Small deviation of phase voltage amplitude adjustment are achieved.

Description

technical field [0001] The invention belongs to the field of virtual synchronous motor control, and in particular relates to a virtual synchronous generator control method based on droop coefficient self-adaptive adjustment. Background technique [0002] As energy shortages and environmental pollution have seriously affected social and economic development, economical, clean, renewable wind energy, solar energy and other new energy sources have received more and more attention. With the rapid growth of new energy grid-connected installed capacity, the stability of traditional power system operation is facing a huge threat due to the nonlinear and random fluctuations of distributed power generation. Distributed power supply is a static device because there are no rotating components in its circuit. Compared with traditional synchronous generators, distributed power supply lacks the rotating reserve capacity and moment of inertia to maintain the overall energy balance of the g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/40H02J3/48H02J3/50H02P21/24H02P21/00
CPCH02J3/40H02J3/48H02J3/50H02P21/0017H02P2103/20H02P21/24H02J2203/20
Inventor 高文根吴浙勋何睿桑康伟杨运峰
Owner ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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