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A Synchrophasor Measurement Method Based on Compressive Sensing

A technology of synchrophasor measurement and compression sensing, applied in measurement devices, measurement of electrical variables, instruments, etc., can solve the problems of reducing the dynamic security monitoring capability of the power grid, affecting the safe and stable operation of the power grid, and affecting the application effect of accuracy. The effect of prolonging the total observation time, promoting and applying high value, and avoiding the fence effect

Active Publication Date: 2019-05-03
NORTHEAST DIANLI UNIVERSITY
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Problems solved by technology

The invention patent with the Chinese patent application number 201510192628.0 uses the DFT algorithm for synchronized phasor measurement, which will inevitably cause spectrum leakage and fence effects
Although the DFT algorithm can perform synchronized phasor measurements under certain conditions and scope, it has certain limitations, and the accuracy of phasor measurements directly affects the application effect of WAMS
Inaccurate synchrophasor measurement will eventually reduce the dynamic security monitoring capability of the power grid and affect the safe and stable operation of the power grid

Method used

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  • A Synchrophasor Measurement Method Based on Compressive Sensing
  • A Synchrophasor Measurement Method Based on Compressive Sensing
  • A Synchrophasor Measurement Method Based on Compressive Sensing

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Embodiment Construction

[0049] The specific implementation manners of the present invention will be further described in detail below in conjunction with the drawings and examples.

[0050] The following description and drawings illustrate specific embodiments of the invention sufficiently to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely represent possible variations. Individual components and functions are optional unless explicitly required, and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. The scope of embodiments of the present invention includes the full scope of the claims, and all available equivalents of the claims. These embodiments of the present invention may be referred to herein, individually or collectively, by the term "invention", which is for convenience only and is not...

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Abstract

The invention discloses a synchronous phasor measurement method based on compressed sensing. The method is characterized in that in view of the problems of low accuracy and the like existing in the existing synchronous phasor signal processing method, compressed sensing is applied to synchronous phasor measurement, and modeling of typical measurement signals is included; discrete Fourier transform is used for carrying out sparse transform on constructed measurement signals; a Dirichlet matrix is selected as an observation matrix, and measurement signals are reconstructed for analysis; and based on the above information, a compressed sensing restructuring algorithm and other steps are used, and through carrying out waveform analysis on the typical measurement signals, the synchronous phasor can be measured more accurately and high efficiently. The method of the invention has the advantages of scientific and reasonable method, strong applicability, high promotyion and application values, good effects and the like.

Description

technical field [0001] The invention relates to a high-precision synchronized phasor measurement method, in particular to a compressed sensing-based synchronized phasor measurement method. Background technique [0002] With the rapid development of the power grid and the advancement of the power market process, the complexity of the operation of the power system is increasing, and the requirements for the stability of the power system are getting higher and higher. Wide Area Measurement System (WAMS) can reflect the dynamic changes of the whole network system in real time. As a new technology and important means of dynamic real-time monitoring of the power grid, it plays an important role in the safe and stable operation of the power grid. Based on the mature Global Positioning System (Global Positioning System, GPS), communication technology, digital signal processing technology (Digital signal processing technology, DSP) and synchrophasor measurement unit (Phasor Measureme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R23/163
CPCG01R23/163
Inventor 于华楠杜瑶王鹤赵睿赵立权张新
Owner NORTHEAST DIANLI UNIVERSITY
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