Area of research:
Diploma & Master Thesis
The position is suitable for part-time employment.
The Institute of Automation and Applied Informatics (IAI) develops new methods and tools for the characterization of power gird behavior, modelling and simulation. Special attention is drawn to the grid frequency due to its importance to grid dynamics. For long sections of data we could just “count zero crossings” and average. However, within one period, the frequency cannot be measured directly, but needs to be estimated. The estimation result and quality is influenced by the signal properties (distortion). Because different locations in the grid show different distortion characteristics, the frequency measurement also has a location sensitivity.
The first objective of this thesis is a theoretical and experimental analysis of the dependency of Instantaneous Frequency methods and the related Phasor estimation methods with regard to the signal properties in time and frequency domain. The results should then be used to develop and set up an analysis of measurement location sensitivity using real-world data, which are available at our institute.
Specific tasks are:
Literature review focusing on Instantaneous Frequency and the related phasor estimation techniquesAnalysis of the dependency btw. frequency estimation and the signal properties + practical experiments with synthetic signals using MATLABDevelopment and implementation of an analysis on measurement location dependency of frequency estimation using real-world data.