Abstract
Harmonic resonance problems can be aroused in the industrial power system in the presence of both nonlinear loads and shunt capacitors. This paper investigates the harmonic resonance problem by case-studying of a copper smelting plant low voltage power distribution system. A flexible selective harmonic compensation and resonance damping algorithm for shunt active power filter (SAPF) is proposed to solve this problem. Theoretical analyses based on equivalent system model have shown that harmonic compensation together with resonance damping by the SAPF could obtain the best performance to improve the power quality of the power distribution system. Finally, the industrial application field test results are presented to demonstrate the applicability of the SAPF.
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