Control system and method for recycling of braking energy of drilling machine

A braking energy recovery and control system technology, applied in the field of oil drilling, can solve the problems of public DC bus energy fluctuations, drilling rig braking energy waste, etc., to reduce equipment depreciation and maintenance expenses, accurate monitoring and timely feedback, reduce The effect of small purchase expenditures

Pending Publication Date: 2019-07-02
BAOJI PETROLEUM MASCH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a control system for recovering and reusing the braking energy of drilling rigs, which solves the problems in the prior art that the braking energy of drilling rigs is wasted and the energy of the public DC bus is easy to fluctuate

Method used

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  • Control system and method for recycling of braking energy of drilling machine
  • Control system and method for recycling of braking energy of drilling machine
  • Control system and method for recycling of braking energy of drilling machine

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specific Embodiment

[0033]Monitoring unit a8 (FPM-7211W20131008095005) is connected to monitoring unit b9 (FPM-7211W20131008095005), monitoring unit a8 (FPM-7211W20131008095005) and monitoring unit b9 (FPM-7211W20131008095005) are connected to public DC bus monitoring 1 ( Unit b9 (FPM-7211W20131008095005) is connected to #1DC / DC module 2 (MDBF) and #2DC / DC module 3 (MDBF), and the other end of #1DC / DC module 2 (MDBF) is connected to energy storage element a4 (NBCSR09500P2R7 ), the other end of #2DC / DC module 3 (MDBF) is connected with energy storage element b5 (58500), #1DC / DC module 2 (MDBF) and #2DC / DC module 3 (MDBF) are respectively connected to the common DC bus 1 ( TMY-100x20), the monitoring unit b9 (FPM-7211W20131008095005) is also connected to the braking resistor 6 (P150).

[0034] The main components of the control system for recovery and reuse of drilling rig braking energy of the present invention are as follows:

[0035] Monitoring unit b9: Control the charging and discharging proc...

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Abstract

The invention discloses a control system for recycling of the braking energy of a drilling machine. The system comprises a monitoring unit a and a monitoring unit b, which are both connected with a common DC bus. The monitoring unit b connected with a brake resistor is connected with a # 1 DC/DC module and a # 2 DC/DC module; the # 1 DC/DC module is also connected with an energy storage element a,the # 2 DC/DC module is also connected with an energy storage element b, and the # 1 DC/DC module and the # 2 DC/DC module are connected with a public direct current bus. The invention further discloses a control method of the control system, and the method comprises the steps: connecting the input device to the monitoring unit; then installing the control system between power generation equipment and load equipment; starting the two pieces of equipment at the same time; and employing a closed-loop control mode to keep the voltage of the common DC bus stable. The control system disclosed by the invention effectively reduces the impact influence on the common DC bus during the operation of the drilling machine, effectively recovers and utilizes redundant energy, and saves the cost.

Description

technical field [0001] The invention belongs to the technical field of petroleum drilling, and relates to a control system for recovering and reusing braking energy of a drilling rig, and also relates to a control method for the control system. Background technique [0002] Drilling rigs are an essential tool for exploration and drilling, and are widely used in the exploitation of oil, shale gas, coal bed methane, and combustible ice. The power sources of drilling rigs are generally: power grid, diesel power generation equipment and gas power generation equipment. The braking energy generated during the working process of the existing drilling rig is usually converted into heat energy and consumed without recycling, resulting in a waste of energy; at the same time, the energy of the public DC bus can easily fluctuate due to the impact response of geological changes , resulting in the failure of the power generation equipment to respond in time, and delaying the production t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J1/10H02J7/34
CPCH02J1/10H02J7/34H02J7/345
Inventor 董兴华张志伟于兴军薛苏玲梁卫斌
Owner BAOJI PETROLEUM MASCH CO LTD
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