Integrated variable frequency fracturing pumping device control system and control method

Abstract

The invention discloses an integrated variable frequency fracturing pumping device control system and control method. The integrated variable frequency fracturing pumping device control system comprises a high voltage electric input unit, an integrated container, and a variable frequency integrated machine; the integrated container comprises a power supply and distribution unit connected with a high voltage circuit breaker, the power supply and distribution unit is connected with and provides power for a main touch screen display, a main controller, an auxiliary controller, an auxiliary touchscreen display, and the variable frequency integrated machine correspondingly, and the main controller is connected with a remote control station and a camera system correspondingly; the main controller is further connected with the fluid end and the power end of a fracturing pump and an illuminating system; the main controller is further connected with a fracturing truck; the variable frequency integrated machine comprises a detection system, a temperature control system, and a frequency converter, wherein the detection system and the temperature control system are connected with the main controller correspondingly, the frequency converter is connected with the auxiliary controller, the frequency converter is connected with a variable frequency motor, and the variable frequency converteris connected with the fracturing pump. According to the integrated variable frequency fracturing pumping device control system and control method, the whole control system is divided into two independent modules, the structure adopts an integrated modular design, the mounting space is compact, maintenance is convenient, and assembly is flexible.

Description

technical field [0001] The invention belongs to the technical field of automatic control, relates to an integrated frequency conversion fracturing pumping equipment control system, and also relates to a control method for the integrated frequency conversion fracturing pumping equipment control system. Background technique [0002] Fracturing pumping equipment is essential equipment for shale gas development. Traditional fracturing equipment generally uses a diesel engine to drive the fracturing pump through a transmission box. The speed of the fracturing pump is adjusted by changing the speed of the diesel engine and the gear position of the transmission box. Control the displacement of injected downhole fracturing fluid. In recent years, with the continuous expansion of the scale of shale gas exploitation, it has become a development trend to replace diesel engines and transmission boxes with electric motors to directly drive fracturing pumps. At present, electric drive fra...

AI Technical Summary

Problems solved by technology

In recent years, with the continuous expansion of the scale of shale gas exploitation, it has become a development trend to use electric motors instead of diesel engines and transmission boxes to directly drive fracturing pumps. At present, electric drive fracturing equipment usually requires separate transportation and layout of power distribution room and VFD room , covers a large area, and the input cabinet, output cabinet, rectifier and filter cabinet, motor, and frequency converter all exist independently. The motor of the traditional electric drive is separated from the frequency converter, and each handles its own state, which cannot be integrated. The requirements are high, the cable laying is relatively complicated, the electromagnetic harmonic interference is relatively large, it is not convenient for high-protection treatment, and the equipment maintenance is also relatively complicated

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