Battery Charging Plant

TYPE OF INDUSTRY – Battery Charging Plant at Himachal Pradesh, India. YEAR OF IMPLEMENTATION – 2014 PROBLEMS - Low Power factor, High KVAH consumption, High breakdown, Frequent failure of existing capacitor bank, Heating of transformer and cables. OBSERVATIONS After conducting Power Quality Audit in the plant, following observations are made: Total Harmonic Distortion (THD) current is 64.60%, THD voltage is 23%, Power factor is 0.82, Due to resonance effect between conventional type APFC & system inductive impedance, the harmonic current amplify to dangerous level and badly affect Power Quality of whole electrical system. SOLUTION - Detune Resonance condition by providing suitable Passive Harmonic Filter Banks. Add Digitally controlled Active Harmonic Filter Bank to control THDI & THDV < 5% as per IEEE 519-1992