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Noise processing method for signals processed by WMS

A noise processing and processing method technology, applied in the field of signal processing, can solve problems such as detection gas signal processing interference, power grid security operation threats, and inability to effectively judge GIS equipment, etc., to achieve the effect of ensuring effectiveness and accuracy

Active Publication Date: 2022-06-03
STATE GRID HUBEI ELECTRIC POWER CO LTD MAINTENANCE CO +2
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially in the field of GIS gas detection, the existence of noise will interfere with the processing of the detected gas signal in GIS (Gas Insulated Combined Electrical Appliance), the second harmonic signal after the original signal processing is due to noise interference, the second harmonic and the detected gas Correspondence of concentration is affected
The inability to effectively and accurately detect the gas concentration detected inside the GIS means that the internal SF of the GIS equipment cannot be effectively judged 6 This will pose a threat to the safe operation of the power grid and will affect the overall benefits of the national economy

Method used

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  • Noise processing method for signals processed by WMS
  • Noise processing method for signals processed by WMS
  • Noise processing method for signals processed by WMS

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

When detecting the micro-water and decomposed components in the GIS, the gas to be tested is filled into the detection cell, and the infrared light source of the wavelength band corresponding to the characteristic peaks of the micro-water and decomposition components is used to inject the infrared light into the detection cell, and the infrared light is injected into the detection cell. A photoelectric sensor is arranged on one side to collect infrared light intensity signals and convert them into electrical signals for transmission to the signal processing device.

[0024] In the signal processing device, the device processes the collected original signal of the gas to be measured into a second harmonic signal that can characterize the concentration of the gas to be measured.

[0025] After the second harmonic signal is generated, the second harmonic signal is denoised. Since the second harmonic signal is composed of continuous voltage signals, the invention takes the continuou...

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Abstract

The invention provides a noise processing method for signals after WMS processing. The noise processing method comprises the following steps that noise signals in second harmonic signals are processed; reconstructing the second harmonic signal; carrying out multiple iterations on noise signals in the second harmonic signals; after the secondary harmonic signal is obtained, a residual error is calculated; compared with a traditional denoising method, in the denoising process of the L1R sparse processing method, a successive iteration method is introduced, successive denoising processing is carried out on the second harmonic signal containing the noise signal, the noise signal in the second harmonic signal is effectively removed, a threshold value shrinkage method is matched, a fixed iteration threshold value is not given, and the denoising effect is good. The threshold value is automatically adjusted according to the signal denoising process, and the noise signal in the second harmonic is removed to the maximum extent.

Description

technical field [0001] The invention relates to the field of signal processing, in particular to a noise processing method for signals processed by WMS. Background technique [0002] In the field signal detection such as substations, due to the influence of external environmental interference, sensor errors and other factors, the light intensity signal and detection processing signal collected by the detection device will carry a large amount of noise, which makes the detection and processing signal and target. The signal is seriously distorted, and further, it may seriously interfere with the detection result. And in the subsequent processing of the light intensity signal, it is affected by the noise in the detection hardware circuit, which increases the difficulty of signal analysis and discrimination, and finally obtains a wrong signal processing result. Especially in the field of GIS gas detection, the existence of noise will interfere with the processing of the detecte...

Claims

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Application Information

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IPC IPC(8): G06K9/00
CPCG06F2218/04
Inventor 董晓虎程绳朱正宜翁永春陈思哲林磊罗浪易芬芬付思诗杨丰帆时伟君吴军张晓星张引
Owner STATE GRID HUBEI ELECTRIC POWER CO LTD MAINTENANCE CO
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