Compressed sensing reconstruction method suitable for microgrid harmonic wave monitoring

A technology of compressed sensing reconstruction and harmonic monitoring, applied in other decoding technologies, etc., can solve the problems of not considering the characteristics of micro-grid harmonic signals, and the reconstruction effect is not very ideal

Active Publication Date: 2014-08-13
TIANJIN UNIV
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Problems solved by technology

However, none of these existing compressed sensing reconstruction methods, including the spectral projection gradient method, takes into account the characteristics of the harmonic signal of the microgrid, which makes the reconstruction effect not very ideal

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  • Compressed sensing reconstruction method suitable for microgrid harmonic wave monitoring
  • Compressed sensing reconstruction method suitable for microgrid harmonic wave monitoring
  • Compressed sensing reconstruction method suitable for microgrid harmonic wave monitoring

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[0046] A compressive sensing reconstruction method suitable for micro-grid harmonic monitoring according to the present invention will be described in detail below in combination with embodiments and drawings.

[0047] A compressive sensing reconstruction method suitable for micro-grid harmonic monitoring of the present invention, the fundamental wave filtering is performed on the compressed sampling value y in the early stage to obtain the sparse vector estimated value of the fundamental wave component and a compressed sampled value y containing only harmonic components harmonic , then for y harmonic The process of signal reconstruction of harmonic components using spectral projection gradient method to obtain sparse vector estimates of harmonic components Finally reconstruct the original harmonic signal The monitored N×1-dimensional microgrid harmonic original signal x is compressed and measured with a measurement matrix to obtain an M×1-dimensional compressed sampling ...

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Abstract

The invention relates to a compressed sensing reconstruction method suitable for microgrid harmonic wave monitoring. The compressed sensing reconstruction method includes the steps that it is supposed that theta=phipsi, initialization on fundamental wave filtering is carried out, fundamental wave filtering is carried out, fundamental wave contents in compressed sampling values are filtered, parameter initialization is carried out on a spectrum projection gradient method, the compressed sampling values yharmonic of harmonic components serve as input amount with the spectrum projection gradient method, and sparse vector estimated values sharmonic of the harmonic components are reconstructed to reconstruct microgrid harmonic wave original signals x. By means of the compressed sensing reconstruction method, fundamental wave filtering is carried out on the microgrid harmonic wave compressed sampling values to obtain the sparse vector estimated values of the fundamental wave contents and microgrid harmonic wave compressed sampling values (only containing the harmonic wave components) after the fundamental components are filtered, the harmonic signal reconstruction effect is effectively improved, and the compressed sensing reconstruction method is suitable for microgrid harmonic wave monitoring.

Description

technical field [0001] The present invention relates to a reconstruction method of compressed sensing, further relates to the reconstruction of compressed data for micro-grid harmonic monitoring, and in particular to a compressed sensing reconstruction method suitable for micro-grid harmonic monitoring. Background technique [0002] Under the dual pressure of energy demand and environmental protection, the international energy community has turned more attention to related research fields of microgrid technology. Microgrid, also known as microgrid, refers to a small-scale power generation and distribution system composed of distributed power sources, energy storage devices, energy conversion devices, related loads, monitoring and protection devices, which can be connected to the external distribution network and run in parallel. It can operate in isolation and is an important part of the future smart grid. A large number of distributed power sources and power electronic dev...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M13/39
CPCH03M13/39
Inventor 杨挺袁博冯瑛敏盆海波王洪涛游金阔徐明玉
Owner TIANJIN UNIV
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