Micro-grid harmonic and inter-harmonic analysis method based on cubic spline interpolation waveform reconstruction
A spline interpolation and waveform reconstruction technology, applied in the field of microgrid harmonic and interharmonic analysis, can solve problems such as fence effect, spectrum leakage, influence analysis accuracy, etc., and achieve the effect of simple implementation, improved accuracy and high accuracy
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment Construction
[0017] There are many power electronic devices and nonlinear loads in the microgrid, resulting in a large number of harmonics and inter-harmonics, and its fundamental frequency changes, which is difficult to analyze by FFT algorithm. The invention is suitable for the harmonic and interharmonic analysis of the micro-grid containing a large number of power electronic devices.
[0018] When the fundamental frequency of the microgrid changes, the fundamental frequency will shift by 50 Hz. Using a fixed sampling frequency and a limited analysis window width for harmonic and interharmonic analysis will inevitably produce spectrum leakage and fence effects. Let the fixed sampling frequency be
[0019] f s =N×f 0 (1)
[0020] In the formula: N is the number of sampling points in a fundamental wave cycle, f 0 is the fundamental frequency.
[0021] Due to the change of the fundamental frequency, it is generally difficult to determine the sampling frequency, an...
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