Jose Ivan Rodríguez's research works

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Case Study - Calculation of DGA Limit Values and Sampling Interval in Power Transformers

Conference Paper

Oct 2019

The predictive maintenance in power transformers aims to manage the risk of the asset. This is achieved through the calculation and control of the health index of the power transformers. A very important parameter for calculating the health index in power transformers is the dissolved gas analysis (DGA). The current trend is online DGA monitoring,...

Voltage transformer (VT) configuration for voltage measurement in...

Evaluated topologies for resistor emulation, full diode bridge plus
(a)...

Buck–boost resistor emulator with the CrCM controller

Experimental characterisation of the buck–boost resistor emulatorat...

Electronic Resistor Emulators for Ferroresonance Damping in Medium-Voltage Transformers

Article

Full-text available

Nov 2018

The occurrence of ferroresonances, due to the presence of voltage transformers in isolated-neutral in medium-voltage (MV) distribution grids, results in overvoltages and overcurrents that may damage the connected equipment. To prevent this phenomenon, the protection windings of the MV transformers have to be properly loaded for damping purposes. Mi...

Previous indicative measurements in the selected MV power system

Selected MV isolated‐neutral distribution power system for...

Characteristic circuit for parallel ferroresonance analysis

Capacitance due to the several isolation materials employed in lines

Magnetisation curves of the analysed VTs

Ferroresonance phenomena in medium-voltage isolated neutral grids: a case study

Article

Full-text available

Sep 2018

Power quality events associated with the occurrence of ferroresonances in medium voltage (MV) isolated-neutral distribution power systems are well known but they still happen in nowadays grids. This work deals with the study of ferroresonance events in a distribution grid region characterised by having distributed generators and being lightly loade...