Harmonics in power distribution systems in the chemical industry are mainly due to the large use of power electronics. The main equipments for generating harmonics are: chemical electrolytic rectification equipment, frequency conversion speed control device of machine pump, uninterruptible power supply unit (UPS), DC power supply complete set for substation, new type of lighting (energy saving lamp, electronic ballast) Fluorescent lights) and so on.
1. Centralized management: DBL- ATP7 series reactive power compensation device + DBL-SVG static var generator + DBL-APF series active filter (DBL-ATP7 mixed with SVG)
Terminal local management: DBL-PQ terminal power quality device + DBL-NP series neutral line security energy-saving device
2, (recommended) centralized management: DBL-SVG static var generator + DBL-APF series active filter
Terminal local management: DBL-PQ terminal power quality device + DBL-NP series neutral line security energy-saving device
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