Overview
IEC TR 63222-101:2025 - Power quality management, Part 101: Power quality data application provides guidelines for applying power quality (PQ) data across public power supply systems at LV, MV and HV voltage levels with 50 Hz or 60 Hz rated frequency. The Technical Report focuses on methodologies for PQ data analytics to mine hidden knowledge, support power quality management, maintain normal system operation, improve efficiency, and help avoid unexpected system events, equipment malfunction, or production interruption. The document presents optional methods and practical examples rather than mandatory requirements.
Key topics
- Understanding power quality data
- Distinction between continuous and discontinuous PQ phenomena
- Aggregation methods, sampling rules and their impact on PQ indicators
- Data pre-processing
- Missing-data filling and abnormal-data identification workflows
- Analysis methodologies
- Mechanism-based methods (physics/engineering interpretation)
- Non-mechanism methods (statistical and machine-learning approaches)
- Applications and case studies
- System economical operation (e.g., analysis of transformer and line losses caused by harmonics)
- Potential risk early warning (transformer overheating, capacitor faults, subsynchronous resonance)
- Management and consultancy services (voltage-dip source identification, source location, harmonic contribution determination, temporal distribution analysis)
- Practical measurement and diagnostic procedures
- Use of PQ monitoring results, event description (point-on-wave, event currents), and impedance estimation
- Optional techniques and examples
- Statistical reporting (95 % probability values), modelling workflows (e.g., KFCM-SVM mentioned), and case-study data visualizations
Applications
IEC TR 63222-101 is intended to be used to:
- Improve grid reliability and operational efficiency through data-driven PQ decisions
- Provide early warning of equipment stress or network resonances
- Quantify economic impacts of harmonics on transformer and line losses
- Support fault source identification and location (voltage dips, harmonics)
- Inform consulting, asset management, and regulatory compliance analyses
Practical outputs from applying the report include targeted mitigation measures, prioritized maintenance actions, and informed planning for harmonic filters, damping measures, or operational changes.
Who should use this standard
- Utility planners and grid operators
- Power quality engineers and technical consultants
- Asset and reliability managers
- Manufacturers of PQ monitors and analytics software
- Researchers applying PQ data analytics across LV/MV/HV networks
Related standards
- IEC 61000-4-30 (relevant aggregation and measurement principles referenced in the report)
- Other IEC power-quality guidance and TRs for measurement and instrumentation
This TR is a practical resource for organizations seeking to convert PQ measurements into actionable analytics, early warnings, and operational improvements.