Abstract
The load in trip operation of the drilling rig has the pulse characteristics. In order to improve the transmission characteristics of drilling rig and reduce power configuration, a power output peak-modulating operation scheme using flywheel energy storage and peak-modulating motor is proposed. Flywheel energy storage can be used to store excess energy through the flywheel energy storage device when the diesel engine is running under low load, and the flywheel is in the process of accelerating energy storage. When a large impact load is detected in the system, the stored energy is released, and the load is driven by the peak-modulating motor and the diesel engine in parallel, so as to smooth the engine's loading rate and ensure that the engine can run smoothly when the load changes. The flywheel in this state is in the deceleration discharge mode. In this paper, the principle of flywheel energy storage and drilling rig’s load-levelling technology based on flywheel energy storage technology are studied deeply, the conditions of peak-modulating motor in electric and power state are given, and a drilling rig’s load-levelling system is designed.
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