Xi'an Baode Automation Co., Ltd. drilling platform power distribution system characteristics are: power supply, powered by generator sets, under normal circumstances, the system has a total of four generator sets, each generator capacity of about (1500-2000) kVA, 1 standby, 3 or two parallel operation or single operation. Small system short-circuit capacity; Due to the use of DC motors and variable frequency motors, a large number of harmonic currents are generated, and dynamic reactive power compensation harmonic control is required.
The power factor, voltage and current waveform have been well improved: the power factor has been improved from 0.56 to 0.98 before investment, which greatly reduces the reactive power loss and effectively solves the problem of force rate fine of power supply bureau. The 5th harmonic current decreased from 169.1A to 29.6A (harmonic filtering rate 82.4%), and the 7th harmonic current decreased from 57.4A to 27.5A (harmonic filtering rate 52.1%).