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Device and method for controlling SMES (superconductor magnetic energy storage) based on an LESO (linear extended state observer)

A technology of expanding state and control device, applied in circuit devices, flexible AC transmission systems, AC network circuits, etc. Sticky and adaptable, easy-to-implement, simple-structured effects

Active Publication Date: 2015-02-11
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The SMES controller based on the extended state observer uses the active disturbance rejection technology for the control of the SMES, so that the SMES can quickly stabilize the voltage at the installation point and effectively improve the damping characteristics of the system, but the conventional ADRC controller has many parameters , the complex structure affects its practical application

Method used

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  • Device and method for controlling SMES (superconductor magnetic energy storage) based on an LESO (linear extended state observer)
  • Device and method for controlling SMES (superconductor magnetic energy storage) based on an LESO (linear extended state observer)
  • Device and method for controlling SMES (superconductor magnetic energy storage) based on an LESO (linear extended state observer)

Examples

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Embodiment

[0028] Embodiment: a kind of SMES control device based on linear extended state observer LESO (see figure 1 ), comprising a wind farm containing SMES superconducting coils, characterized in that it includes a signal conditioning module, a signal driver module, a DSP control module, a converter monitoring module and a converter module; wherein, the input terminal of the signal conditioning module Gather wind farm bus current and bus voltage through current transformer and voltage transformer, its output end is connected with the ADC pin of TMS320F2812DSP chip of DSP control module; The signal of pin, its output end is connected with the input end of converter module; The SCIA pin of described DSP control module TMS320F2812DSP chip is bidirectionally connected with converter monitoring module; The output terminal output control signal of described converter module Give SMES superconducting coils.

[0029] The signal conditioning circuit is composed of an AC voltage sensor and ...

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PUM

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Abstract

The invention relates to a method for controlling SMES (superconductor magnetic energy storage) based on an LESO (linear extended state observer). The device comprises a wind farm, wherein the wind farm comprises an SMES superconductive coil. The device is characterized by also comprising a signal conditioning module, a signal driving module, a DSP (digital signal processor) control module, a converter monitoring module and a converter module. A control method comprises the following steps of collecting a signal of the wind farm; filtering and conditioning; performing DSP controlling and processing, and building an LADRC (linear active disturbance rejection controller); outputting power; controlling the SEMS superconductive coil. The device and the method have the advantages that the robustness and suitability are high, the structure is simple, and the implementation is easy.

Description

(1) Technical field: [0001] The invention relates to the technical field of power system control, and relates to a SMES (Superconductor Magnetic Energy Storage) control device and method based on a linear extended state observer (LESO) (Liner Extended State observer). (two) background technology: [0002] In order to improve the voltage stability of the power grid, the current common practice is to perform reactive power compensation for wind farms through SMES. The role of SMES in the power system depends not only on the location and capacity of the installation point, but also on the control method it adopts. The wind power system is a strongly nonlinear uncertain system. Although the nonlinear SMES controller based on DFL theory has good robustness to the change of the operating point of the conventional power system, it is not suitable for the wind power system with strong perturbation. The SMES controller based on the extended state observer uses the active disturbance...

Claims

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Application Information

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IPC IPC(8): H02J3/18
CPCY02E40/10H02J3/185
Inventor 周雪松石雪琦马幼捷王德祥刘伟
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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