Electric control system of prefabricated cabin type intelligent high-power variable-frequency drilling machine

Abstract

The invention discloses an electric control system of a prefabricated cabin type intelligent high-power variable-frequency drilling machine. The system comprises a frequency converter cabinet and a PLC control cabinet. The frequency converter cabinet is used for installing frequency converter units, and one or more frequency converter units can be selected to be installed in the cabinet according to the number and capacity of controlled motors. In the PLC control cabinet, a programmable controller, a touch screen, an integrated industrial personal computer, a frequency converter control unit, an intelligent remote control terminal, an isolation transformer, a sensor and a relay are mainly installed. According to the electric control system of the high-power variable-frequency energy-saving drilling machine, the intelligent substation technology, the modular prefabricated cabin technology and the variable-frequency speed regulation energy-saving technology are organically combined, and high-low voltage power distribution equipment, a dry-type power transformer, a motor intelligent control system and a static var generator are integrated in one prefabricated cabin, so that variable-frequency speed regulation of a high-power motor can be realized, personal safety is guaranteed, energy consumption is reduced, and labor intensity of workers is reduced.

Description

technical field [0001] The invention relates to the technical field related to electric control systems, and specifically relates to an electric control system for a prefabricated cabin type intelligent high-power frequency conversion drilling rig. Background technique [0002] The frequency converters used in the electric control system of AC electric drilling rigs were mostly foreign brands such as ABB and Siemens in the past, which were expensive, with long debugging and maintenance cycles. There are also some drilling rig electric control systems with different structures. [0003] After searching, it was found that the invention of application number CN201410003208.9 discloses an electric control system for AC drilling rigs with recyclable energy, including the power part and the control part. Unit connection; the output end of the AC busbar is connected to the automatic drilling motor through the transformer and reversible frequency converter 1; the AC busbar is also ...

AI Technical Summary

Problems solved by technology

[0005] However, the existing electrical control system for drilling rigs is difficult to guarantee personal safety, which leads to energy consumption and high labor intensity of the staff. Therefore, a prefabricated cabin type intelligent high-power frequency conversion drilling rig electrical control system is provided here; the high-power frequency conversion energy-saving drilling rig electric The control system organically combines intelligent substation technology, modular prefabricated cabin technology, and frequency conversion speed regulation energy-saving technology, and integrates high and low voltage power distribution equipment, dry-type power transformers, motor intelligent control systems and static var generators (SVG) in one prefabricated In the cabin, high-power motor frequency conversion and speed regulation can be realized to ensure personal safety, reduce energy consumption, and reduce labor intensity of staff

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