Petroleum drilling machine direct current micro-grid system

Abstract

The invention relates to a petroleum drilling machine direct current micro-grid system and belongs to the field of petroleum drilling machine equipment. The petroleum drilling machine direct current micro-grid system comprises a power system, a drive system and a direct current micro-grid system, the direct current micro-grid system comprises a peak regulation device, a micro power source and a control device, the peak regulation device comprises a peak regulation motor and a flywheel energy storage device, and the micro power source is connected to the flywheel energy storage device through a rectifier, a direct current bus and a converter. The micro power source is in a parallel connection with a connecting line between the flywheel energy storage device and the peak regulation motor by the direct current bus respectively through a winch energy recovery device rectifier and a boost rectifier. The petroleum drilling machine direct current micro-grid system is specific to features of different loads and pulse loads, power flexible outputting and peak regulation operating function can be achieved, engine capacity can be reduced, and economical efficiency is improved. Meanwhile, the direct current micro-grid system has a function of adaptibility to short time high-power outputting, and large torque of a winch and low-velocity and wide speed adjustable range all-electric driving can be achieved under severe working conditions of jamming of a drilling tool and disengaging.

Description

technical field [0001] The invention relates to a direct current micro-grid system of an oil drilling rig, and belongs to the field of oil drilling rig equipment. Background technique [0002] The oil drilling rig is equipped with a large-capacity independent energy power system to provide sufficient power for the drilling rig's hoisting system, mud circulation system, and drill bit screw-in system. Due to the large differences in the speed, power, and load characteristic parameters of the working unit of the drilling rig, and the complex working conditions, it is necessary to set up a complex parallel transmission system between the diesel engine and the working machine to realize functions such as speed change, torque change, and clutch. [0003] The transmission mode of the mechanical oil drilling rig is that the diesel engine is connected with the chain and the carriage through the hydraulic coupling, the clutch, and the power input is realized. The transmission system ...

AI Technical Summary

Problems solved by technology

The existing mechanical peak-shaving device includes a peak-shaving motor and a flywheel energy storage device. When the drill is under drilling or under the idle traveling condition, the flywheel energy storage device only stores the redundant energy of the diesel engine through the peak-shaving motor. Under such circumstances, relying solely on the energy released by the flywheel energy storage device can only reduce the impact load on the diesel engine, and it is difficult to meet the power requirements of the combined carriage.

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