CN114070134A - Electric control device of variable frequency drilling machine and control method thereof - Google Patents
Electric control device of variable frequency drilling machine and control method thereof Download PDFInfo
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- CN114070134A CN114070134A CN202210005359.2A CN202210005359A CN114070134A CN 114070134 A CN114070134 A CN 114070134A CN 202210005359 A CN202210005359 A CN 202210005359A CN 114070134 A CN114070134 A CN 114070134A
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- control
- domination
- control system
- motor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
- H02P5/74—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors controlling two or more ac dynamo-electric motors
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/54—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting two or more dynamo-electric motors
Abstract
The invention discloses an electric control device of a variable frequency drilling machine, which comprises: the control system stores the domination modes of the multiple frequency converters for respectively controlling the motors, the same frequency converter can control different motors under different domination modes, control words and state words of the multiple frequency converters are respectively divided into multiple data blocks, the control system sends the control words corresponding to the domination modes to the frequency converters after receiving a request for selecting the domination mode and receives the state words fed back by the frequency converters, and the frequency converters control the starting of the motors according to the state words. The device has multiple domination mode, realizes the steerable different motors of same converter under the mode of domination of difference, improves well team work efficiency, reduces cost of maintenance.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to an electric control device of a variable frequency drilling machine and a control method thereof.
Background
When the petroleum frequency conversion electric drill is in use, the frequency converter is used for controlling the operation of the motor. There are several obvious disadvantages to variable frequency electric drilling machines in field use:
the first frequency converter can only control one motor, which wastes the multifunctional resources of the frequency converter.
Secondly, when the motor goes wrong, because of one-to-one control, the field of the drilling crew cannot be replaced in time or the replacement period is long, and normal production is influenced.
And thirdly, when the frequency converter has problems, the maintenance time is long, fault points are not easy to remove, and adverse effects on the well team production can be caused.
Fourthly, when the frequency converter or the motor of the winch has problems, the drilling crew can only drill through the emergency motor, and the uncertain risk is increased.
Disclosure of Invention
Aiming at the defects in the prior art, the embodiment of the invention provides the electric control device of the variable frequency drilling machine and the control method thereof, so that the same frequency converter can control different motors under different domination modes, the working efficiency of a drilling team is improved, and the maintenance cost is reduced.
In a first aspect, an embodiment of the present invention provides an electric control device for a variable frequency drilling machine, including: the control system stores the domination modes of the multiple frequency converters for respectively controlling the motors, the same frequency converter can control different motors under different domination modes, control words and state words of the multiple frequency converters are respectively divided into multiple data blocks, the control system sends the control words corresponding to the domination modes to the frequency converters after receiving a request for selecting the domination mode and receives the state words fed back by the frequency converters, and the frequency converters control the starting of the motors according to the state words.
Optionally, the control system compares the state word with the selected domination mode according to the state word fed back by the receiving frequency converter, after the comparison result is consistent, the alternating current contactor actuation control motor is started, the alternating current contactor feeds back the actuation state to the control system, and the control system performs state judgment to ensure actuation of the alternating current contactor.
Optionally, the control system establishes a plurality of data types for the control data of the plurality of motors, and writes the plurality of data types into the control word and the status word of the corresponding frequency converter respectively.
Optionally, there are four motors.
Optionally, the data types include hand wheel give, motor scram, auxiliary motor feedback, and current motor speed.
In a second aspect, the control method for the electric control device of the variable frequency drilling machine provided by the embodiment of the invention comprises the following steps:
the control system stores a control mode that a plurality of frequency converters respectively control the motor;
the control system receives a domination mode selected by a user, and under different domination modes, the same frequency converter can control different motors, and control words and state words of a plurality of frequency converters are respectively divided into a plurality of data blocks;
searching a control word matched with the domination mode according to the domination mode, and sending the searched control word to the frequency converter;
the control system receives the status word fed back by the frequency converter;
and the frequency converter controls the motor to start according to the state word.
Optionally, the method further comprises: and the control system compares the state word with the selected domination mode according to the state word fed back by the receiving frequency converter, after the comparison result is consistent, the suction control motor of the alternating current contactor is started, the suction state is fed back to the control system by the alternating current contactor, and the control system judges the state to ensure the suction of the alternating current contactor.
Optionally, the method further comprises: the control system establishes a plurality of data types for the control data of the motors and respectively writes the data types into the control words and the status words of the corresponding frequency converters.
Optionally, there are four motors.
Optionally, the data types include hand wheel give, motor scram, auxiliary motor feedback, and current motor speed.
The invention has the beneficial effects that:
the electric control device of the variable frequency drilling machine provided by the embodiment of the invention has multiple domination modes, and the purpose that the same frequency converter can control different motors under different domination modes is realized, so that the working efficiency of a drilling team is improved, and the maintenance cost is reduced.
The control method of the electric control device of the variable frequency drilling machine provided by the embodiment of the invention realizes multiple domination functions, and the same frequency converter can control different motors under different domination modes, thereby improving the working efficiency of a drilling team and reducing the maintenance cost.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 shows a block diagram of an electric control device of a variable frequency drilling machine according to a first embodiment of the invention;
fig. 2 is a flow chart illustrating a control method of an electric control device of a variable frequency drilling machine according to a second embodiment of the invention;
fig. 3 shows a flowchart of a control method of an electric control device of a variable frequency drilling machine according to a third embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
As used in this specification and the appended claims, the term "if" may be interpreted contextually as "when", "upon" or "in response to a determination" or "in response to a detection". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
As shown in fig. 1, a block diagram of an electric control device for a variable frequency drilling machine according to a first embodiment of the present invention is shown, and the electric control device includes: the control system stores the domination modes of the multiple frequency converters for respectively controlling the motors, the same frequency converter can control different motors under different domination modes, control words and state words of the multiple frequency converters are respectively divided into multiple data blocks, the control system sends the control words corresponding to the domination modes to the frequency converters after receiving a request for selecting the domination mode and receives the state words fed back by the frequency converters, and the frequency converters control the starting of the motors according to the state words.
In this embodiment, four dominant modes are set according to four transducers, namely, a DW transducer, an RT transducer, an MP1 transducer and an MP2 transducer, configured on the field of the drilling team, as shown in table 1:
| frequency converter 1 | Frequency converter 2 | Frequency converter 3 | Frequency converter 4 | |
| Dominant mode one | DW | RT | MP1 | MP2 |
| Dominant mode two | MP2 | DW | RT | MP1 |
| Dominant mode three | MP1 | MP2 | DW | RT |
| Dominant mode four | RT | MP1 | MP2 | DW |
TABLE 1 dominance mode Table
Dominant mode one: the frequency converter 1 controls a DW motor, the frequency converter 2 controls an RT motor, the frequency converter 3 controls an MP1 motor, and the frequency converter 4 controls an MP2 motor; dominant mode two: the frequency converter 1 controls an MP2 motor, the frequency converter 2 controls a DW motor, the frequency converter 2 controls an RT motor, and the frequency converter 3 controls an MP1 motor; dominant mode three: the frequency converter 1 controls an MP1 motor, the frequency converter 2 controls an MP2 motor, the frequency converter 3 controls a DW motor, and the frequency converter 4 controls an RT motor; dominant mode four: the frequency converter 1 controls an RT motor, the frequency converter 2 controls an MP1 motor, the frequency converter 3 controls an MP2 motor, and the frequency converter 4 controls a DW motor. According to the mode table, no matter which frequency converter of the four frequency converters fails to be used, the field of the drilling crew can be selected by 2 switching modes, and the phenomenon of error work caused by the fact that the frequency converters cannot be started can be avoided. In the control system, the control words and the state words of 4 frequency converters are respectively divided into 4 data blocks, after receiving a domination mode selected by a user, the control system sends the control words to the frequency converter in the domination mode through a DP bus according to the selected domination model, and then receives the state words fed back by the frequency converter.
On the starting condition, in order to prevent starting errors, the control system compares the state words with the selected domination mode according to the state words fed back by the receiving frequency converter, after the comparison results are consistent, the suction state of the AC contactor is fed back to the control system, the suction of the AC contactor controls the starting of a motor, and the control system judges the state and ensures the suction of the AC contactor. Control system controls the motor operation through contrasting the state word of converter feedback with the domination mode of selection, and the contrast is unanimous just, can prevent like this to start to make mistakes, and control system can carry out once more after receiving the signal after the ac contactor actuation and judge, guarantees that ac contactor is in the actuation state.
A plurality of data types are established for control data of a plurality of motors in a control system, and the plurality of data types are respectively written into control words and state words of corresponding frequency converters. The four motors comprise a winch motor, a mud pump motor, a traveling block motor and a bit feeding motor. The data types include hand wheel set, motor scram, auxiliary motor feedback, and current motor speed. For example: when the dominant mode is selected, the frequency converter 1 corresponds to a DW motor, the read speed is the speed of the traveling block, the frequency converter 3 corresponds to an MP1 motor, and the read speed is the pump stroke of a slurry pump. In the third control mode, the frequency converter 1 corresponds to an MP1 motor, the read speed is the pump stroke of the slurry pump, the frequency converter 3 corresponds to a DW motor, and the read speed is the speed of the traveling block. The frequency converter is switched by arranging a driving data group and a motor data group in the frequency converter, and the arranged data is shown in a table 2.
TABLE 2 transducer switching parameter setting table
The electric control device of the variable frequency drilling machine provided by the embodiment of the invention has multiple domination modes, and the purpose that the same frequency converter can control different motors under different domination modes is realized, so that the working efficiency of a drilling team is improved, and the maintenance cost is reduced.
In the first embodiment, the invention provides an electric control device of a variable frequency drilling machine, and correspondingly, the application also provides a control method of the electric control device of the variable frequency drilling machine. Please refer to fig. 2, which is a flowchart illustrating a control method for an electric control device of a variable frequency drilling machine according to a second embodiment of the present invention. Since the method embodiment is basically similar to the device embodiment, the description is simple, and the relevant points can be referred to the partial description of the device embodiment. The method embodiments described below are merely illustrative.
As shown in fig. 2, a flowchart of a control method for an electric control device of a variable frequency drilling machine according to a second embodiment of the present invention is shown, and the method includes the following steps:
the control system stores a control mode that a plurality of frequency converters respectively control the motor;
the control system receives a domination mode selected by a user, and under different domination modes, the same frequency converter can control different motors, and control words and state words of a plurality of frequency converters are respectively divided into a plurality of data blocks;
searching a control word matched with the domination mode according to the domination mode, and sending the searched control word to the frequency converter;
the control system receives the status word fed back by the frequency converter;
and the frequency converter controls the motor to start according to the state word.
The control method of the electric control device of the variable frequency drilling machine provided by the embodiment of the invention further comprises the following steps: the control system establishes a plurality of data types for the control data of the motors and respectively writes the data types into the control words and the status words of the corresponding frequency converters. The four motors comprise a winch motor, a mud pump motor, a traveling block motor and a bit feeding motor. The data types include hand wheel set, motor scram, auxiliary motor feedback, and current motor speed.
As shown in fig. 3, a flowchart of a control method for an electric control device of a variable frequency drilling machine according to a third embodiment of the present invention is shown, and the present embodiment is different from the second embodiment in that the control method further includes: and the control system compares the state word with the selected domination mode according to the state word fed back by the receiving frequency converter, after the comparison result is consistent, the suction control motor of the alternating current contactor is started, the suction state is fed back to the control system by the alternating current contactor, and the control system judges the state to ensure the suction of the alternating current contactor. Control system controls the motor operation through contrasting the state word of converter feedback with the domination mode of selection, and the contrast is unanimous just, can prevent like this to start to make mistakes, and control system can carry out once more after receiving the signal after the ac contactor actuation and judge, guarantees that ac contactor is in the actuation state.
The control method of the electric control device of the variable frequency drilling machine provided by the embodiment of the invention realizes multiple domination modes, and the same frequency converter can control different motors under different domination modes, thereby improving the working efficiency of a drilling team and reducing the maintenance cost.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (10)
1. An electric control device of a variable frequency drilling machine comprises: the control system is characterized in that domination modes of the motors controlled by the multiple frequency converters respectively are stored in the control system, different motors can be controlled by the same frequency converter under different domination modes, control words and state words of the multiple frequency converters are divided into multiple data blocks respectively, after the control system receives a request for selecting the domination mode, the control words corresponding to the domination mode are sent to the frequency converters, the state words fed back by the frequency converters are received, and the frequency converters control the starting of the motors according to the state words.
2. The device of claim 1, wherein the control system compares the status word with the selected domination mode according to the status word fed back by the receiving frequency converter, after the comparison result is consistent, the ac contactor actuation control motor is started, the ac contactor feeds back the actuation status to the control system, and the control system performs status judgment to ensure the actuation of the ac contactor.
3. The apparatus of claim 1 or 2, wherein the control system establishes a plurality of data types for the control data of the plurality of motors, and writes the plurality of data types into the control word and the status word of the corresponding inverter, respectively.
4. The apparatus of claim 3, wherein the number of motors is four.
5. The apparatus of claim 4, wherein the data types include hand wheel give, motor scram, auxiliary motor feedback, and current motor speed.
6. A control method of an electric control device of a variable frequency drilling machine is characterized by comprising the following steps:
the control system stores a control mode that a plurality of frequency converters respectively control the motor;
the control system receives a domination mode selected by a user, and under different domination modes, the same frequency converter can control different motors, and control words and state words of a plurality of frequency converters are respectively divided into a plurality of data blocks;
searching a control word matched with the domination mode according to the domination mode, and sending the searched control word to the frequency converter;
the control system receives the status word fed back by the frequency converter;
and the frequency converter controls the motor to start according to the state word.
7. The control method according to claim 6, further comprising: and the control system compares the state word with the selected domination mode according to the state word fed back by the receiving frequency converter, after the comparison result is consistent, the suction control motor of the alternating current contactor is started, the suction state is fed back to the control system by the alternating current contactor, and the control system judges the state to ensure the suction of the alternating current contactor.
8. The control method according to claim 6 or 7, further comprising: the control system establishes a plurality of data types for the control data of the motors and respectively writes the data types into the control words and the status words of the corresponding frequency converters.
9. The control method of claim 8, wherein the number of the motors is four.
10. The control method of claim 9, wherein the data types include hand wheel give, motor scram, auxiliary motor feedback, and current motor speed.
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| CN202210005359.2A CN114070134B (en) | 2022-01-05 | 2022-01-05 | Electric control device of variable frequency drilling machine and control method thereof |
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| CN202210005359.2A CN114070134B (en) | 2022-01-05 | 2022-01-05 | Electric control device of variable frequency drilling machine and control method thereof |
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| CN114070134B CN114070134B (en) | 2022-05-06 |
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| CN110262360A (en) * | 2019-07-10 | 2019-09-20 | 天地科技股份有限公司上海分公司 | Frequency converter simulator and analogy method |
| CN113054885A (en) * | 2021-02-09 | 2021-06-29 | 浙江虎霸建设机械有限公司 | Redundant switched systems of tower machine converter |
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2022
- 2022-01-05 CN CN202210005359.2A patent/CN114070134B/en active Active
Patent Citations (7)
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| US20180089103A1 (en) * | 2008-01-11 | 2018-03-29 | International Business Machines Corporation | Dynamic address translation with access control in an emulator environment |
| CN201303306Y (en) * | 2008-09-25 | 2009-09-02 | 安徽怡能电子科技有限公司 | Frequency conversion energy-saving control system of triple-split three-phase ac motor |
| CN202600428U (en) * | 2012-05-10 | 2012-12-12 | 乐星产电（大连）有限公司 | Intelligent control cabinet in communication with high-voltage frequency converter |
| CN103995764A (en) * | 2014-05-21 | 2014-08-20 | 电子科技大学 | Logic analyzer with serial bus protocol continuous triggering function |
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