Electric power system waveform search

摘要

The present disclosure relates to searching electric power system waveforms. Disclosed herein are various systems and methods for improving search performance through indexing electric power system waveforms using waveform attributes such as frequency, amplitude, angle, rate of change, and the like. According to some embodiments, multiple indexes may be used together to find information of interest. A reference signal may be utilized according to some embodiments. Normalizing a plurality of waveforms using a reference signal may facilitate the use of an index for comparing two arbitrary waveforms. This disclosure also relates to detecting and indexing islanding conditions in an electric power system. Various embodiments may utilize information relating to islanding conditions in connection with search operations.

主权项

1. A system configured to index data based on at least one characteristic of a plurality of waveforms associated with an electric power distribution system, comprising:
a processor in communication with a bus; a non-transitory computer-readable storage medium in communication with the bus, the non-transitory computer readable storage medium comprising:
an index module configured to generate a first index based on at least one characteristic of a plurality of waveforms, the index module configured to:
divide each of the plurality of waveforms into a first plurality of temporal segments;determine at least one index value representative of the characteristic for each of the first plurality of temporal segments in each of the plurality of waveforms;associate the determined index value of each of the first plurality of temporal segments in each of the plurality of waveforms with a time stamp configured to identify at least one time in the plurality of waveforms based on the determined index value; andstore the time stamp and the determined index value for each of the first plurality of temporal segments in the first index.