Effects of Harmonics
Different Perspectives
Engineering Perspective
• Nuisance tripping of circuit breaker
• Harmonic resonance
• Capacitor bank failure
• Excessive heating
• Transformer overheating
• Skin effects on cables for higher harmonic orders
• Motor winding burnt (dv/dt) & hunting
• Neutral overloading (double neutral)
• Causing EMI to sensitive signals
• Problems to generators
Business Perspective
• Increased maintenance and replacement cost (OPEX)
• Interruptions and downtimes cost
• Reduced system capacity and thus increase CAPEX by unnecessary of expansion.