Technical research on intelligent identification and auxiliary compilation of regional power grid maintenance plan

Abstract

The invention discloses technical research on intelligent identification and auxiliary compilation of a regional power grid maintenance plan, and the method comprises the following steps of: collecting the real-time data of a power distribution line after the normal operation of the line, carrying out denoising processing, processing a zero-sequence voltage signal, calculating the first-order instantaneous amplitude of the zero-sequence voltage of a three-phase line, then calculating the sum of the sampling values of the first-order instantaneous amplitude of the zero-sequence voltage in one cycle, performing comparison with a preset threshold. According to the method, the real-time data of the power distribution line is collected, analyzed and compared, the sum of the sampling values of the instantaneous amplitude of first-order intrinsic modal component of zero-sequence voltage is used as the basis for judging the abnormality of the power distribution network, detection of single-phase grounding, two-phase short-circuit grounding and other anomalies is realized, a high-resistance fault and an intermittent fault which are difficult to extract abnormal features in the distributionline can be effectively detected, and the high-resistance fault, the intermittent fault and the low-resistance fault of the distribution line are effectively identified.

Description

technical field [0001] The invention relates to the technical field of power grid maintenance, in particular to a technical research on intelligent identification and auxiliary preparation of regional power grid maintenance plans. Background technique [0002] With the continuous development of my country's power technology and power demand and the increasing scale of modern power grids, the number of power supply equipment and power transmission and transformation facilities is also increasing. The normal service of each power supply equipment is the guarantee for the high-quality operation of the power grid. However, the time from the beginning of use to the final scrapping of the equipment is limited, and the abnormality and failure of the equipment are the main reasons that affect its safe operation. Within the normal service period of the equipment, reasonable arrangements for equipment maintenance in a certain way can effectively reduce accidental failures and prolong ...

AI Technical Summary

Problems solved by technology

At present, the main method of abnormal identification is to study single-phase grounding and phase-to-phase short circuit. For high-resistance faults and intermittent faults, due to the small fault current after the fault, the drop in voltage, and the unobvious characteristics of three-phase unbalance, the abnormal identification Features are relatively difficult

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