Power Quality Analysis
Conducting periodic power quality assessments for Solar and Wind power plants to ensure compliance with APERC and TSERC guidelines — IEEE 519, AP TRANSCO and TS TRANSCO standards.
Power Quality Analysis Includes
Total Harmonic Distortion (THD)
Overall harmonic content in voltage and current waveforms
Individual Voltage Distortions (up to 50th Order)
Harmonic-by-harmonic voltage distortion measurement and reporting
Individual Current Distortions (up to 50th Order)
Harmonic-by-harmonic current distortion for full IEEE 519 compliance
Short-term & Long-term Flicker (Pst / Plt)
Short-term (10 min) and long-term (2 hour) voltage flicker severity measurement
Total Demand Distortion (TDD)
Current distortion relative to maximum demand load current
DC Component
DC injection measurement at grid interconnection point for solar plants
Service Details
- Plants: Solar & Wind
- Frequency: Periodical (as required)
- Location: On-site Facility
- Standards: IEEE 519, AP TRANSCO, TS TRANSCO
- Compliance: APERC & TSERC
- Coverage: Andhra Pradesh and Telangana
Regulations
Applicable regulatory documents and standards governing power quality testing for renewable energy plants in Andhra Pradesh and Telangana.
Related Services
Frequently Asked Questions
THD measures the harmonic content distorting a clean sine wave of voltage or current. Excessive THD from solar/wind inverters can damage grid equipment and violate APERC/TSERC interconnection limits, so it is tested and reported per IEEE 519.
Testing follows IEEE 519 for harmonic limits, along with AP TRANSCO and TS TRANSCO grid codes, and is reported for compliance with APERC and TSERC regulations.
Testing is periodical — typically done at commissioning and then on a recurring basis as required by the utility or grid code for solar and wind plants.
DC injection testing measures the DC component present at the grid interconnection point from solar inverters, which must stay within regulatory limits to avoid transformer saturation and grid equipment damage.