Leon Zhang

Leon Zhang

Leon Zhang is a transformer condition monitoring engineer at Houfeng (HF), writing the technical guides on this site: dissolved gas analysis (DGA), online transformer monitoring, anti-theft protection and partial discharge (PD) detection. The guides reference the applicable standards, including IEEE C57.104-2019 for DGA, IEC 60599 for dissolved gas interpretation and IEEE C57.113 for PD measurement.

Leon Zhang is a transformer condition monitoring engineer at Houfeng (HF), writing the technical guides on this site: dissolved gas analysis (DGA), online transformer monitoring, anti-theft protection and partial discharge (PD) detection. The guides reference the applicable standards, including IEEE C57.104-2019 for DGA, IEC 60599 for dissolved gas interpretation and IEEE C57.113 for PD measurement.

DGA Monitoring for Power Transformers

Transformer DGA Monitoring Workflow

By Leon Zhang, Transformer Condition Monitoring Engineer · Published September 9, 2026 · Last updated: October 5, 2026 · 9 min read DGA monitoring for power transformers is the continuous or periodic measurement of dissolved gases in transformer oil to detect developing internal…