Audible sound measurement device and method for GIL breakdown positioning

A technology of measuring device and measuring method, applied in the direction of using acoustic measurement for testing, testing dielectric strength, etc., can solve the problems of high requirements on sensor durability and anti-interference ability, unstable measurement effect, damage to GIL equipment, etc. Achieve the effect of improving real-time responsiveness, reducing economic and maintenance costs, and improving quality

Inactive Publication Date: 2018-12-21
STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST +5
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AI Technical Summary

Problems solved by technology

[0004] As a power transmission channel, the safety and stability of GIL's operation is very important for power stations. The main hidden danger in the operation of its equipment is the insulation of the equipment. At present, the industry mainly uses its internal partial discharge, gas pressure, temperature, SF6 gas Leakage, automatic fire alarm, etc. are monitored, and the online monitoring of fault location for GIL internal insulation breakdown and short circuit is still in the development and research stage
[0005] Before the GIL breaks down, partial discharge will appear at the fault site. In some cases, partial discharge can exist for several months or even longer. Each partial discharge will cause a certain degree of damage to the equipment, and this damage will gradually accumulate. When When the accumulated damage is large enough, it will break down the insulating medium and cause a short circuit, which will damage the GIL equipment and cause a br

Method used

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  • Audible sound measurement device and method for GIL breakdown positioning
  • Audible sound measurement device and method for GIL breakdown positioning

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] An audible sound measurement method, characterized in that: a plurality of acoustic sensors are arranged along the length direction of the GIL pipe gallery,

[0062] Methods include:

[0063] Obtaining multiple acoustic signals collected by the acoustic sensor;

[0064] Perform real-time preliminary processing on the obtained acoustic signal, and extract the acoustic signal data that meets the trigger condition when it is judged to be a breakdown acoustic signal;

[0065] Based on the extracted acoustic signal data, the location algorithm is used to calculate the breakdown location.

[0066] Further, the real-time preliminary processing includes:

[0067] The acquired acoustic signals are respectively conditioned and converted to obtain corresponding digital signals;

[0068] Based on the obtained digital signal, it is judged whether it is a breakdown acoustic signal.

[0069] Further, the audible sound measuring method is characterized in that:

[0070] Based on t...

Embodiment 2

[0072] Such as figure 1 with figure 2 As shown, the present invention provides an audible sound measurement device for GIL breakdown location, including an acoustic sensor 1, an analog-to-digital conversion module 2, powering the acoustic sensor and the analog-to-digital conversion module and data for the FPGA central processing module Transmission cable 3, small acquisition and storage unit 4, and FPGA central processing module 5.

[0073] The acoustic sensors are arranged along the GIL pipe gallery;

[0074] The central processing module is used for:

[0075] Obtaining multiple acoustic signals collected by the acoustic sensor;

[0076] Perform real-time preliminary processing on the obtained acoustic signal, and extract the acoustic signal data that meets the trigger condition when it is judged to be a breakdown acoustic signal;

[0077] Based on the extracted acoustic signal data, the location algorithm is used to calculate the breakdown location.

[0078] The real-t...

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Abstract

The invention discloses an audible sound measurement device and method for GIL breakdown positioning. The device comprises an acoustic sensor and a central processing module; the acoustic sensor is arranged along a GIL pipe gallery; and the central processing module is used for: obtaining a plurality of acoustic signals collected by the acoustic sensor, performing real-time preliminary processingon the obtained acoustic signals, extracting acoustic signal data meeting a trigger condition when the acoustic signals are judges as breakdown acoustic signals, and performing calculation to obtain abreakdown location by using a positioning algorithm on the basis of the extracted acoustic signal data. After the breakdown location is obtained, the breakdown location can be fed back to a GIL equipment control system to realize real-time online monitoring of the GIL breakdown positioning.

Description

technical field [0001] The invention belongs to the technical field of substation inspection equipment, and in particular relates to an audible sound measurement device and method for GIL breakdown location. Background technique [0002] GIL (Gas-insulated Transmission Lines) gas-insulated pipeline busbar is a safe and flexible alternative to overhead lines, which has the advantage of providing the same power transmission while occupying less space, and because of its relatively beautiful appearance, it has minimal The electromagnetic radiation makes them also suitable for use close to buildings or even inside buildings. [0003] And because it has the advantages of large transmission capacity, low loss, less land occupation, flexible layout, high reliability, good safety protection, maintenance-free, long life and small interaction with the environment. In recent years, GIL gas insulated pipeline buses have been widely used in my country's transmission lines, especially in...

Claims

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Application Information

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IPC IPC(8): G01R31/12
CPCG01R31/1209
Inventor 贾勇勇腾云杨景刚马勇赵科高山李玉杰宋思齐李洪涛刘咏飞刘媛丁然邓洁清许建刚陈少波谭婷月陈双钟岚夏峰关为民袁国刚姚煜中
Owner STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST
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