Real-time wavelet threshold denoising method for processing SCADA system data

A wavelet threshold denoising and system data technology, applied in the field of online simulation, to achieve good noise reduction processing effect

Pending Publication Date: 2022-04-08
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology

[0004] In view of the above deficiencies in the prior art, the present invention proposes a real-time wavelet threshold denoising method for processing SCADA system data, which solves the problem of real-time processing of SCADA system data

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  • Real-time wavelet threshold denoising method for processing SCADA system data
  • Real-time wavelet threshold denoising method for processing SCADA system data
  • Real-time wavelet threshold denoising method for processing SCADA system data

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specific Embodiment

[0048] At present, a total of 1,500 flow data collected continuously by a certain pipeline SCADA system from 15:56 on December 19, 2021 to 15:44 on December 20, 2021 and from 1:46 to 12:46 on December 20, 2021 have been collected by the SCADA system. A total of 1500 pump speed data collected continuously at 10:32 on December 20, 2021. Now carry out on-line denoising to the collected traffic according to the method of the present invention, the implementation steps are as follows:

[0049] Step 1, collect the above 1500 flow data and pump speed data one by one to simulate the real-time collection process, and determine the size and position of the sliding window, until the 1500 flow data and pump speed data are collected and stop collecting:

[0050] Step 2, perform wavelet threshold denoising processing on the data in the window after each acquisition, the method is as follows:

[0051] (1) When the window size is 1, the wavelet threshold denoising is not performed, and the d...

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Abstract

The invention provides a real-time wavelet threshold denoising method for processing SCADA (supervisory control and data acquisition) system data. According to the method, online wavelet threshold denoising is realized by adopting a sliding window, a wavelet coefficient is processed by adopting an adaptive function threshold, and wavelet decomposition of different levels is carried out under different signal lengths. According to the real-time wavelet threshold denoising method for processing the SCADA system data, calculation is simple, the denoising effect is good, the SCADA system data can be processed in real time, and basic data are provided for a long-distance pipeline online simulation technology.

Description

technical field [0001] The invention belongs to the field of online simulation, and relates to a method for denoising data collected by a SCADA system by adopting an OLMS-based wavelet threshold denoising method. Background technique [0002] At present, the existing operation control methods of long-distance pipelines in my country mainly rely on the SCADA system to monitor the operating process parameters of some monitoring points such as stations along the line. It is difficult for dispatching and operating personnel to obtain the operating parameters of the entire line and accurately grasp and predict the operating status of the pipeline. Online simulation technology plays an irreplaceable important role in process operation and management. Online simulation is a dynamic simulation using the SCADA system as a real-time shared database platform. SCADA automatically receives the measured data of the remote measurement and control system, and stores the data in the historic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
Inventor 李长俊仇柏林贾文龙何杰温川贤林百慧
Owner SOUTHWEST PETROLEUM UNIV
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