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Substation equipment sound anomaly identification method and system

A technology of abnormal sound and identification method, applied in speech analysis, instruments, etc., can solve the problems of low sound positioning accuracy of equipment, inability to collect real sound of equipment, complex outdoor environment, etc., so as to avoid the interference of outdoor environmental noise and man-made noise. , more targeted, and solve the effect of large amount of calculation

Inactive Publication Date: 2021-01-29
STATE GRID INTELLIGENCE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] (1) The outdoor environment is complex, the equipment sound positioning accuracy is not high, and the adaptability is poor;
[0008] (2) The system is complex and has a large amount of calculation, which needs to rely on complex computing units or even GPU (Graphic ProcessUnit, video processing unit);
[0009] (3) The working sound of the sound source to be tested has a large span in the frequency domain, and the general sound collection equipment cannot collect the real sound of the equipment

Method used

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  • Substation equipment sound anomaly identification method and system
  • Substation equipment sound anomaly identification method and system
  • Substation equipment sound anomaly identification method and system

Examples

Experimental program
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Effect test

Embodiment 1

[0035] According to an embodiment of the present invention, an embodiment of a method for identifying abnormal sound of substation equipment is provided. Refer to figure 1 , including the following procedures:

[0036] S101: Obtain sound information of the target equipment in the substation;

[0037] Specifically, sound information is collected based on a multi-element microphone array, such as a binary microphone array, a quadruple microphone array, and the like. In order to ensure the "high fidelity" of the sound signal, the sampling frequency should be at least 20-120KHz. figure 2 The waveform diagram of the sound signal is given.

[0038] In this embodiment, during the process of collecting sound signals, environmental noise and human voice interference usually will not cover up normal sounds, but will affect clarity.

[0039] The microphone array suppresses sound interference other than the main lobe through beamforming, which can suppress noise.

[0040] The microph...

Embodiment 2

[0077] According to an embodiment of the present invention, an embodiment of an abnormal sound recognition system for substation equipment is provided, which specifically includes:

[0078] The sound information acquisition module is used to obtain the sound information of the substation target equipment, and preprocess the sound information;

[0079] The voiceprint feature extraction module is used to extract voiceprint features from the preprocessed voice information; wherein, the voiceprint features at least include FBank features, decibels, fundamental frequency, short-term energy, short-term zero-crossing rate and correlation Sex coefficient;

[0080] The voiceprint recognition module is used to input the extracted voiceprint features into the trained voiceprint recognition model and output the recognition results;

[0081] The device state judging module is used to judge the running state of the target device based on the recognition result.

[0082] It should be noted...

Embodiment 3

[0084] In one or more embodiments, a terminal device is disclosed, including a server, the server includes a memory, a processor, and a computer program stored on the memory and operable on the processor, and the processor executes the The program implements the method for identifying abnormal sound of substation equipment in Embodiment 1. For the sake of brevity, details are not repeated here.

[0085] It should be understood that in this embodiment, the processor can be a central processing unit CPU, and the processor can also be other general-purpose processors, digital signal processors DSP, application specific integrated circuits ASIC, off-the-shelf programmable gate array FPGA or other programmable logic devices , discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.

[0086] The memory may include read-only memory and random ac...

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Abstract

The invention discloses a substation equipment sound anomaly identification method and system. The method comprises the steps that: the sound information of target equipment of a transformer station is obtained, and the sound information is pre-processed; voiceprint features are extracted from the preprocessed sound information, and voiceprint features at least comprise FBank features, decibels, fundamental frequencies, short-time energy, short-time zero-crossing rates and correlation coefficients; the extracted voiceprint features are input into a trained voiceprint recognition model, and a recognition result is output; and the running state of the target equipment is judged based on the recognition result. According to the method and system of the invention, directional acquisition of data is carried out through a multi-element microphone array, so that acquired sound is relatively pure; sound signals acquired by a single microphone is the superposition of multi-directional sound signals; and therefore, the accuracy of sound data acquisition can be improved.

Description

technical field [0001] The invention relates to the technical field of abnormal sound identification of substation equipment, in particular to a method and system for identifying abnormal sound of substation equipment. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] With the development of power grid construction and the improvement of safety requirements, the construction of substations is developing in the direction of unattended or few people on duty. At present, unattended substations mainly tend to develop in the direction of "five remotes" (telemetry, remote signaling, remote control, remote adjustment, and remote viewing). Using video monitoring systems, the "remote viewing" function has been gradually realized in substations, but for The monitoring of the sound inside the operating equipment has not been paid attention to, and the...

Claims

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Application Information

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IPC IPC(8): G10L25/03G10L25/06G10L25/18G10L25/21G10L25/27G10L25/51
CPCG10L25/03G10L25/06G10L25/21G10L25/18G10L25/27G10L25/51
Inventor 杨国庆李健孙志周张传友邵光亭王亚菲邓燕刘加科
Owner STATE GRID INTELLIGENCE TECH CO LTD
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