Summary

The first part of the paper introduces the background and objectives. Transelectrica, Romania’s

Transmission System Operator (TSO) and Wholesale Metering Operator (OMEPA), is responsible for ensuring Power Quality (PQ) across the transmission grid. To comply with the new regulations and policies, Transelectrica launched in 2024 a modernization of its Power

Quality Monitoring System (PQMS), based on over 14 years of operation.

The second part presents the new PQMS architecture. Class A analyzers were installed in all high-voltage substations, capturing transients and identifying disturbance origins.

The third part highlights advanced analytics and cybersecurity needed to process large volumes of PQ data daily, using automated classification algorithms.

The fourth part illustrates a summary of the latest measurements of power quality parameters and an analysis of voltage fluctuations generated by renewable energy sources. The paper concludes that the modernized PQMS strengthens Romania’s grid observability, analytical capability and cyber resilience.

Additional informations

Publication type Session Materials
Reference C4_10175_2026
Publication year
Publisher CIGRE
Country Romania
Study committees
  • Power system technical performance (C4)
File size 2 MB
Price for non member 30 €
Price for member 30 €

Authors

CHICIOROAGA Nichita - CNTEE Transelectrica SA; STANESCU Carmen - CNTEE Transelectrica SA; GHEORGHE Stefan - National University of Science and Technology Politehnica University of Bucharest; DIACONU Ciprian - CNTEE Transelectrica SA; RADULESCU Andreea - CNTEE Transelectrica SA

Keywords

Power quality, monitoring, transmission, disturbances, cybersecurity

News Regarding the Electrical Power Quality Monitoring in the Electrical Transmission Grid