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A Fault Judgment Method for Indoor Substation Equipment Based on Audio Feature Extraction

A technology for equipment faults and audio features, which is applied in the field of indoor substation equipment fault judgment, can solve problems such as no analysis and processing, and achieve the effects of convenient operation, simple processing methods and improved efficiency.

Active Publication Date: 2019-03-19
STATE GRID INTELLIGENCE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this inspection method has improved a lot compared with manual inspection, it only collects some information on the spot and does not analyze and process it.

Method used

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  • A Fault Judgment Method for Indoor Substation Equipment Based on Audio Feature Extraction
  • A Fault Judgment Method for Indoor Substation Equipment Based on Audio Feature Extraction
  • A Fault Judgment Method for Indoor Substation Equipment Based on Audio Feature Extraction

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0031] For indoor substations, most of them are screen devices, which can be used for status analysis and monitoring through image acquisition. But for the battery cabinet, because it involves the power supply of other equipment, it is very important to the safety of the indoor equipment of the entire substation. If the battery status cannot be judged only by image acquisition, it is necessary to choose other methods for auxiliary judgment. In the normal working state, there is no abnormal sound in the battery cabinet, but if there is a fault, it will produce abnormal sound, such as "crackling" and other abnormal sounds caused by discharge. Therefore, the sound collection equipment can be used to assist in judging the status of the indoor equipment in the substation, thereby realizing remote detection.

[0032] Through a comprehensive analysis of the ...

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Abstract

The invention discloses an indoor substation equipment fault judgment method based on audio characteristic extraction; the method comprises the following steps: collecting a substation indoor sound with a dual track audio signal collection device; according left and right track signals, calculating angle information of an audio signal, and constructing a signal time sequence diagram and an angle diagram; and judging stationary characteristics of the signal according to the signal time sequence diagram and the angle diagram, and carrying out equipment fault diagnosis according to the stationary characteristics. The method disclosed by the invention has simple calculation process, does not need to carry out framing processing on the sound signal, namely can carry out recognition of an equipment running state, and adds a sound collection function while remotely monitoring; and the method enables the sound signal to reach a visualization degree.

Description

technical field [0001] The invention relates to a fault judgment method for indoor substation equipment based on audio feature extraction. Background technique [0002] As a power facility for power system voltage conversion and power distribution, substations generally connect power grids of all levels of voltage through transformers. In order to ensure the safe and stable operation of the power grid, real-time inspections of substations are required to avoid potential safety hazards. The main objects of the inspection are various equipment in the substation. The main equipment in the substation is primary and secondary equipment, which are generally divided into outdoor and indoor. Outdoor equipment is primary equipment, such as circuit breakers, knife switches, main transformers, overhead lines, etc., are all live equipment. The indoor equipment is mainly some protective screens, monitoring screens, communication screens, battery cabinets and background machines, etc. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24
CPCH04L41/06H04L41/0681
Inventor 房桦崔笑笑杨国庆付崇光张斌韩磊王安山毛琨陈培峰
Owner STATE GRID INTELLIGENCE TECH CO LTD