A method for extracting moa resistive current
A technology of resistive current and extraction method, which is applied in the direction of measuring electricity, measuring electrical variables, instruments, etc., can solve the problem that there is no method for accurately extracting MOA resistive current, and achieve the effect of solving the difficulty of accurate measurement and eliminating white noise
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0043] The data of MOA resistive current of a 110KV substation within one year is collected. The sampling frequency is 1200Hz, the number of sampling points is 8458, and the sampling interval is 1 hour. The resistive current data is as follows: figure 2 shown in (a). The fundamental frequency f of the resistive current is 50Hz, and the optimal number of decomposition layers of the wavelet packet transform calculated by formula (2) should satisfy 3.585≤l≤4.585, so the number of decomposition layers l should be 4 layers, and the number of decomposed sub-signals is 2 4 =16, according to formula (1), the frequency length of each sub-signal Δf=37.5HZ, can completely separate the resistive current signal of 50Hz interval. The denoising results of this method are as follows: figure 2 shown in (b). The picture shows that the arrester is aging, and regular maintenance and cleaning need to be strengthened to prevent further aging of the MOA.
Embodiment 2
[0045] The data of the resistive current of MOA within one year of a 220KV substation is collected. The sampling frequency is 1200Hz, the number of sampling points is 8458, and the sampling interval is one hour. For example, image 3 shown in (a). The sampling frequency and the current fundamental frequency are the same as above, so it is directly decomposed into 4 layers. The denoising results of this method are as follows: image 3 shown in (b). The graph shows that the MOA performs well.
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com