Practical evaluation of voltage unbalance at a distribution transformer based on 50 Hz negative sequence active power. - Tshepo Seiphetlho; Johan Rens (AFRICON, 2011)

A practical evaluation of harmonic emission assessment. - Duan Serfontein; Johan Rens (AFRICON, 2011)

Where is the power of the IEEE 1459-2010? - Johan Rens; Tian Van Rooyen; Francois de Jager (AMPS, 2014)

A discriminative approach to harmonic emission assessment. - Brandon Peterson; Johan Rens; Gerhard Botha; Jan Desmet (AMPS, 2015)

Field performance of ambient modal estimation in small signal stability. - Tian Van Rooyen; Johan Rens; Jan Desmet (AMPS, 2015)

Continuous harmonic impedance assessment using online measurements. - Duan Serfontein; Johan Rens; Gerhard Botha; Jan Desmet (AMPS, 2015)

Testing of a predictive pole-slip protection algorithm on a Real Time Digital Simulator. - Lafras Lamont; Johan Rens; Jan A. de Kock (AMPS, 2016)

On the assessment of harmonic emission in distribution networks: Opportunity for the prevailing harmonic phase angle. - Brandon Peterson; Johan Rens; Jan Meyer; Gerhard Botha; Jan Desmet (AMPS, 2016)

Improved event based method for harmonic impedance assessment. - Duan Serfontein; Johan Rens; Gerhard Botha; Jan Desmet (AMPS, 2016)

Continuous Event-Based Harmonic Impedance Assessment Using Online Measurements. - Duan Serfontein; Johan Rens; Gerhard Botha; Jan Desmet (IEEE Trans. Instrum. Meas., 2016)

The Improvement of System Damping by Grid Integration of PV Energy Sources. - Jan-Hendrik Hattingh; Johan Rens; Gerhard Botha (AMPS, 2017)

Evaluation of Harmonic Distortion from Multiple Renewable Sources at a Distribution Substation. - Brandon Peterson; Johan Rens; Gerhard Botha; Jan Meyer; Jan Desmet (AMPS, 2017)

A Novel Approach to Noninvasive Measurement of Overhead Line Impedance Parameters. - Deborah Ritzmann; Johan Rens; Paul S. Wright; William Holderbaum; Ben Potter (IEEE Trans. Instrum. Meas., 2017)

Measurement Uncertainty of Current Harmonics During the Assessment of Compliance to Grid Code Requirements. - Zander Marais; Johan Rens; Brandon Peterson; Gerhard Botha (AMPS, 2018)

Impact of Aggregation Interval on Harmonic Phase Angle Measurements. - Brandon Peterson; Ana Maria Blanco; Johan Rens; Jan Meyer; Gerhard Botha; Jan Desmet (AMPS, 2018)

On the Remote Calibration of Voltage Transformers: Validation of Opportunity. - Sané Rens; Johan Rens; Johann Holm; Gerhard Botha; Jan Desmet (AMPS, 2018)

On harmonic pollution metering: field validation of index-based emission assessment. - Johan Rens; Jan-Hendrik Hattingh; Sané Rens (AMPS, 2019)

A Novel Non-invasive Harmonic Resonance Detection in Public LV networks. - Shrinath Kannan; Jan Meyer; Peter Schegner; Johan Rens (AMPS, 2021)

The opportunity for synchrophasors in distribution networks with integrated renewable energy sources. - Aubrey Lotriet; Johan Rens (AMPS, 2022)

Tracking harmonic filter performance using aggregated harmonic phasors. - Brandon Peterson; Johan Rens; Jan Meyer; Sané Rens (AMPS, 2022)

A Novel Extended Noninvasive Harmonic Resonance Detection Technique for Public Low-Voltage Networks. - Shrinath Kannan; Jan Meyer; Johan Rens; Peter Schegner (IEEE Trans. Instrum. Meas., 2022)

Performance Analysis Based on Real-Field Data of a Method for Locating the Source of Voltage Dips. - Paolo Castello; Carlo Muscas; Davide Sitzia; Sara Sulis; Johan Rens (AMPS, 2023)

The Impact of Wind Farm Flicker on Transformer Gassing. - Jean Fivaz; Johan Rens (AMPS, 2024)

Validating Inertia Assessment Metrics in Distribution Systems with High RES Penetration. - Guglielmo Frigo; Virginia Negri; Alessandro Mingotti; Roberto Tinarelli; Lorenzo Peretto; Johan Rens; Theresa Joubert (AMPS, 2024)