Dealing with Distortions Affecting the Equipment for Hydrogen Generation in a Power Plant

Abstract

The paper deals with the evaluation of harmonic distortions appeared for different operating regimes in absorbed phase currents and supplying voltages. The electric quantities were acquired from the packages of electrolysis belonging to a Hydrogen based cooling system of a power plant generator. Long sets of data were acquired and analyzed in order to evaluate the harmonic spectra for different values of the absorbed currents. Another goal was to reveal possible influences of the type of connection to the main supplying bar (direct versus intermediated by UPS). The analysis of the harmonic spectra obtained in different operational contexts allowed for the proposing of a possible compensation solution, relying on hybrid filters. Simulations were made in order to estimate the results generated by passive filtering. As for the active filtering part, an extended study related to the evaluation of the reference currents by using the Stationary Wavelet Transform was made.