Parallel reactor vibration sensitive area selection method based on CRP and RQA

Abstract

The invention discloses a parallel reactor vibration sensitive area selection method based on CRP and RQA, and the method comprises the following steps: 1, arranging measuring points inside and outside a reactor, obtaining a vibration signal of each measuring point, and selecting an internal measuring point D with the maximum vibration amplitude as a reactor magnetic field concentration area; 2, constructing a CRP of a vibration signal between the internal measuring point D and each external measuring point; step 3, calculating RQA parameters of vibration signals of the internal measuring point D and the external measuring points; 4, respectively constructing the RQA parameters of the internal measuring point D and the external measuring points in the step 3 into characteristic matrixes byadopting a principal component method; 5, calculating a correlation coefficient between the internal measuring point D and each external measuring point characteristic matrix; and 6, judging the vibration sensitive area of the reactor by combining the CRP and the correlation coefficient value. According to the method, the CRP is combined with the RQA, the sensitivity of the measuring point is intuitively judged from the CRP, and the sensitivity of different measuring points is quantitatively compared by the correlation coefficient between the characteristic matrixes constructed by the RQA parameters.

Description

technical field [0001] The invention belongs to the field of vibration signal analysis of power equipment, in particular to a method for selecting a vibration sensitive area of ​​a shunt reactor based on CRP and RQA. Background technique [0002] High-voltage shunt reactors play an important role in stabilizing voltage and reactive power compensation in power systems, and are key equipment for smart grid construction and global energy Internet strategies. The change of the mechanical structure parameters of the shunt reactor will affect the dynamic characteristics of the reactor body mechanical structure. Due to the large volume and complex structure of the high-voltage shunt reactor, the attenuation degree of the internal vibration signal on the surface of the fuel tank has great differences. In the field test, it is necessary to determine the position on the surface of the fuel tank that best reflects the vibration characteristics inside the reactor for the arrangement of...

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Problems solved by technology

Since the traditional signal analysis is based on linear theory, and the reactor vibration signal is nonlinear, the traditional method cannot achieve good analysis results

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