Disturbance path analysis method based on protection starting wave data

Abstract

The invention relates to a disturbance path analysis method based on protective starting of wave record data. The method comprises the following steps of decomposing a wave record data frequency spectrum in a power grid system to obtain a plurality of wave record data vectors; extracting multiple disturbance vectors from the wave record data vectors according to a disturbance amplitude threshold value; conducting clustering analysis on the disturbance vectors according to preset frequency intervals, time window widths and step lengths to obtain a plurality of disturbance node sequences; conducting searching analysis on the disturbance node sequences to identify out a plurality of frequent disturbance node subsequences; determining a dominant disturbance sequence and a recessive disturbancesequence according to the frequent disturbance node subsequences and the connection relationship between a plant station and a power supply line; determining a disturbance analysis result of the power grid system according to the dominant disturbance sequence and the recessive disturbance sequence. The method can achieve locating of a disturbance path in a power grid, find out a hidden danger ofthe power grid in advance and achieve prewarning.

Description

technical field [0001] The present disclosure relates to the field of computer technology, in particular to a disturbance path analysis method based on protection start-up wave recording data. Background technique [0002] There are disturbances and shocks that are not faults in the power grid, and these disturbances will cause the protection equipment to start, but will not produce protection actions, only the so-called protection start-up recordings, which exist in large numbers at the station. In the past In the process of processing, these recorded waves are not processed because they are not fault data, but these recorded waves are valuable for analyzing hidden dangers and weak points in the power grid and early warning. Contents of the invention [0003] In view of this, the present disclosure proposes a disturbance path analysis method based on protection start-up wave data, so as to locate the disturbance path in the power grid, and realize early detection and earl...

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Problems solved by technology

[0002] There are disturbances and shocks that are not faults in the power grid, and these disturbances will cause the protection equipment to start, but will not produce protection actions, only the so-called protection start-up recordings, which exist in large numbers at the station. In the past In the process of processing, these recorded waves are not processed because they are not fault data, but these recorded waves are valuable for analyzing hidden dangers and weak points in the power grid and early warning

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