The Harm of Harmonic in Power Distribution Network and Its Equipment

Abstract. Through several examples, describes the harmonic distribution network and its equipment hazards. Harmonics can cause distribution transformers demonstration power loss and additional loss increases, resulting in reduced aging transformer oil and insulation properties, triggering a distribution transformer discharge breakdown or burn accidents; harmonics is amplified in a capacitor bank, and cause the capacitor bank fuse group burst, tripping and other accidents; harmonics cause the motor to reverse, vibration, noise and temperature; harmonic electromagnetic voltage transformer prone to occur ferromagnetic resonance over-voltage; harmonics resulting in increased distribution network line losses. Awareness and understanding harmonics, harmonic provide for effective governance scientific theory