Oil Drilling Rig Electrical Control System

ZJ70D "one to one" typical configuration schematic diagram

SP type drilling rig electric automation equipment

This type of equipment is AC frequency conversion speed regulating system (VFD), capable to change the voltage and frequency constant AC600V on the main bus into the alternative current with variable frequency through the frequency converter,to control

the revolving speed of the AC asynchronous motor. The application of the VFD control system on the electric drive oil drilling rig is not very long but develops rapidly in recent years for its remarkable performance (especially for winch).

Main Technical index

Power generation system

●Frequency stability precision: 1%

●Frequency regulation time: ≤3s

●Voltage stability precision: ≤1%

●Voltage regulation time: ≤1.5s

●Active load unbalance degree: ≤5%

●Reactive load unbalance degree: ≤5%

Drive System

●Output frequency: 0~300Hz

●Output voltage: no more than the AC bus voltage

Frequency converter

●The self-manufactured frequency converter based on vector control

●The frequency converter of worldwide brand

Drive mode

●"One to one" mode

●"Common DC bus" mode

ZJ70DB "common DC bus" typical configuration schematic diagram