CN105227038A - A kind of electric motor drive system for workover treatment - Google Patents
A kind of electric motor drive system for workover treatment Download PDFInfo
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- CN105227038A CN105227038A CN201510661562.5A CN201510661562A CN105227038A CN 105227038 A CN105227038 A CN 105227038A CN 201510661562 A CN201510661562 A CN 201510661562A CN 105227038 A CN105227038 A CN 105227038A
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Abstract
A kind of electric motor drive system for workover treatment, its three phase mains is connected with controlled rectifier by filter circuit A, the rectification output end of controlled rectifier is connected with filter circuit B and frequency converter successively by DC bus, the output of frequency converter is connected with the power input of adjustable frequency motor, and PLC is connected respectively by the control input end of fieldbus with super capacitor controller and controlled rectifier; The high-pressure side positive pole of bidirectional DC-DC converter is connected with the rectification output end positive pole of controlled rectifier, the high-pressure side negative pole of bidirectional DC-DC converter is connected with the rectification output end negative pole of controlled rectifier, and the low-pressure side positive pole of bidirectional DC-DC converter is connected with the positive pole of super capacitor module.The present invention by transducer drive adjustable frequency motor, thus drives winch, and adjustable frequency motor can realize rotating stepless speed regulation, the feature such as have that staring torque is large, structure simple, energy-conserving and environment-protective, handling good and maintenance cost are low.
Description
Technical field
The present invention relates to workover treatment field, particularly relate to a kind of electric motor drive system for workover treatment.
Background technology
The various working rig in oil field is general at present take diesel engine as power, and diesel engine operating efficiency is only about 50%, and not only energy waste is comparatively serious, and operating cost is high, but also there is a series of environmental issues such as noise pollution.Carry out cleaner production energetically at current national, under the overall situation that implementation environment is evaluated, be necessary to optimize current working rig type of drive, make the energy-conserving and environment-protective more of oilfield enterprise's job execution link.
Current prevalence driven by power working rig.It is using motor as the new assignment machine driving power, modularized design that electricity drives working rig.This working rig adopts motor as power source, according to the technical requirement of workover treatment equipment, is necessary motor, governing system and Job Operations control system organic combination, realizes mechanical, electrical, liquid integrated and intelligent automation control.In workover treatment, no matter be promote operation or transfer operation, all need the lay day of suspended object.Added up by Field Research, workover rig promotes and transfers the activity duration is approximately 1:2 with the ratio of lay day, and motor will have about 66% time to be in zero load or low power operating state, and power of motor utilance is low, needs to increase power compensating device.
Summary of the invention
The object of the present invention is to provide a kind of electric motor drive system for workover treatment, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the invention provides following technical scheme:
For an electric motor drive system for workover treatment, it comprises filter circuit A, controlled rectifier, filter circuit B, frequency converter, bidirectional DC-DC converter, super capacitor controller, super capacitor module, PLC and adjustable frequency motor.
Three phase mains is connected with the rectification input of controlled rectifier by filter circuit A, the rectification output end of controlled rectifier is connected with filter circuit B and frequency converter successively by DC bus, the output of frequency converter is connected with the power input of adjustable frequency motor, adjustable frequency motor drives winch to carry out workover treatment, and PLC is connected respectively by the control input end of fieldbus with super capacitor controller and controlled rectifier.
The high-pressure side positive pole of bidirectional DC-DC converter is connected with the rectification output end positive pole of controlled rectifier, the high-pressure side negative pole of bidirectional DC-DC converter is connected with the rectification output end negative pole of controlled rectifier, the low-pressure side positive pole of bidirectional DC-DC converter is connected with the positive pole of super capacitor module, the low-pressure side negative pole of bidirectional DC-DC converter is connected with the negative pole of super capacitor module, the signal output part of super capacitor module is connected with the signals collecting input of super capacitor controller, the DC-DC control output end of super capacitor controller is connected with the control input end of bidirectional DC-DC converter.
Preferably, described super capacitor controller comprises capacitance management mainboard, capacitance management from plate and current signal collector.
Preferably, capacitance management mainboard is connected from plate with capacitance management by CAN, capacitance management is connected from the current detecting end of plate with the signal output part of current signal collector, current signal collector is connected on the negative pole end of super capacitor module, capacitance management is connected from the total voltage/Insulation monitoring end of plate with the positive terminal of super capacitor module, capacitance management is connected from the capacitance information collection terminal of plate by the signal output part of signal terminal with super capacitor module, and capacitance management is connected from the DC-DC control output end of plate with the control input end of bidirectional DC-DC converter.
Preferably, described current signal collector is current sensor or shunt.
Preferably, the voltage signal inputs of described signal terminal is connected with the voltage signal output end of super capacitor module, the overvoltage signal input part of signal terminal is connected with the overvoltage signal output part of super capacitor module, the temperature signal input of signal terminal is connected with the temperature signal output of super capacitor module, the output of signal terminal is connected with the signal output part of supercapacitive cell, and the signal output part of signal terminal is connected with the capacitance information collection terminal of capacitance management from plate.
Preferably, described filter circuit A comprises filter inductance L1, filter inductance L2 and filter inductance L3, and three outputs of three phase mains are connected with three rectification inputs of controlled rectifier with filter inductance L3 respectively by filter inductance L1, filter inductance L2.
Preferably, described filtering electricity B comprises filter capacitor C1, and filter capacitor C1 is connected in parallel between the both positive and negative polarity of the rectification output end of controlled rectifier.
Preferably, described bidirectional DC-DC converter comprises DC-DC output circuit, and DC-DC output circuit comprises direct current output capacitance C2, pre-charge resistance, pre-charge-relay and total positive relay.
One end of direct current output capacitance C2 is connected with one end of the low-pressure side positive pole of bidirectional DC-DC converter, one end of pre-charge resistance and total positive relay respectively.
The other end of direct current output capacitance C2 is connected with the negative pole of super capacitor module; The other end of pre-charge resistance is connected with one end of pre-charge-relay, and the other end of pre-charge-relay is connected with total positive other end of relay and the positive pole of super capacitor module respectively.
Preferably, described electric motor drive system also comprises touch display, and touch display is connected with PLC.
Compared with prior art, the invention has the beneficial effects as follows:
1), the present invention adopts super capacitor energy-storage technology, adjustable frequency motor is adopted to drive workover rig winch, when operation transferred by workover rig oil pipe, super capacitor EMS absorbs electrical network electric energy, when promoting oil pipe operation, super capacitor EMS and electrical network, jointly for adjustable frequency motor is powered, make up the under powered defect of network transformer.
2), in the present invention, after use super capacitor power compensates, can realize using low power net electricity, drive heavy-duty motor.When system required power compensates, during as carried out lifting operation, controlling two-way DC/DC converter by PLC is boost mode, is discharged to DC bus by super capacitor module, supplements adjustable frequency motor power demand.When system is in standby, braking or small-power runs, unloads pipe as carried out, when transferring operation, controlling two-way DC/DC converter by PLC is decompression mode, is charged by DC bus to super capacitor module, simultaneously stability partial brake power.When grid power blackout, super capacitor module also can provide certain energy, enables workover rig complete lifting restoring step.
3), the present invention by transducer drive adjustable frequency motor, thus drives winch, and adjustable frequency motor can realize rotating stepless speed regulation, the feature such as have that staring torque is large, structure simple, energy-conserving and environment-protective, handling good and maintenance cost are low.
Accompanying drawing explanation
Fig. 1 is the system construction drawing of a kind of electric motor drive system for workover treatment of the present invention;
Fig. 2 is the system construction drawing of super capacitance management in the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1, the invention provides a kind of technical scheme: a kind of electric motor drive system for workover treatment, it comprises filter circuit A, controlled rectifier, filter circuit B, frequency converter, bidirectional DC-DC converter, super capacitor controller, super capacitor module, PLC and adjustable frequency motor.
Three phase mains is connected with the rectification input of controlled rectifier by filter circuit A, the rectification output end of controlled rectifier is connected with filter circuit B and frequency converter successively by DC bus, the output of frequency converter is connected with the power input of adjustable frequency motor, adjustable frequency motor drives winch to carry out workover treatment, and PLC is connected respectively by the control input end of fieldbus with super capacitor controller and controlled rectifier.
The high-pressure side positive pole of bidirectional DC-DC converter is connected with the rectification output end positive pole of controlled rectifier, the high-pressure side negative pole of bidirectional DC-DC converter is connected with the rectification output end negative pole of controlled rectifier, the low-pressure side positive pole of bidirectional DC-DC converter is connected with the positive pole of super capacitor module, the low-pressure side negative pole of bidirectional DC-DC converter is connected with the negative pole of super capacitor module, the signal output part of super capacitor module is connected with the signals collecting input of super capacitor controller, the DC-DC control output end of super capacitor controller is connected with the control input end of bidirectional DC-DC converter.
Wherein, high side voltage is 400V ~ 600V, and low-pressure side voltage is 230V ~ 460V.
The present invention also can adopt a 220VAC power supply, for the device in the present invention provides accessory power supply.
Refer to Fig. 2, super capacitor controller comprises capacitance management mainboard, capacitance management from plate and current signal collector.
Capacitance management mainboard is connected from plate with capacitance management by CAN, capacitance management is connected from the current detecting end of plate with the signal output part of current signal collector, current signal collector is connected on the negative pole end of super capacitor module, capacitance management is connected from the total voltage/Insulation monitoring end of plate with the positive terminal of super capacitor module, capacitance management is connected from the capacitance information collection terminal of plate by the signal output part of signal terminal with super capacitor module, and capacitance management is connected from the DC-DC control output end of plate with the control input end of bidirectional DC-DC converter.
Capacitance management mainboard can adopt EV02B, and capacitance management can adopt EV04C from plate.
Current signal collector is current sensor or shunt.
The voltage signal inputs of signal terminal is connected with the voltage signal output end of super capacitor module, the overvoltage signal input part of signal terminal is connected with the overvoltage signal output part of super capacitor module, the temperature signal input of signal terminal is connected with the temperature signal output of super capacitor module, the output of signal terminal is connected with the signal output part of supercapacitive cell, and the signal output part of signal terminal is connected with the capacitance information collection terminal of capacitance management from plate.
Filter circuit A comprises filter inductance L1, filter inductance L2 and filter inductance L3, and three outputs of three phase mains are connected with three rectification inputs of controlled rectifier with filter inductance L3 respectively by filter inductance L1, filter inductance L2.
Filtering electricity B comprises filter capacitor C1, and filter capacitor C1 is connected in parallel between the both positive and negative polarity of the rectification output end of controlled rectifier.
Bidirectional DC-DC converter comprises DC-DC output circuit, and DC-DC output circuit comprises direct current output capacitance C2, pre-charge resistance, pre-charge-relay and total positive relay.
One end of direct current output capacitance C2 is connected with one end of the low-pressure side positive pole of bidirectional DC-DC converter, one end of pre-charge resistance and total positive relay respectively.
The other end of direct current output capacitance C2 is connected with the negative pole of super capacitor module; The other end of pre-charge resistance is connected with one end of pre-charge-relay, and the other end of pre-charge-relay is connected with total positive other end of relay and the positive pole of super capacitor module respectively.
Electric motor drive system also comprises touch display, and touch display is connected with PLC.The touch display screen of one 5.6 cun can be adopted.
In the present invention, adjustable frequency motor can select the explosion-proof antidetonation adjustable frequency motor at least meeting following multiple parameter index:
1, rated power: 90KW;
2, rated voltage: 380VAC;
3, rated speed: 591rpm;
4, invariable power rotating speed: 1800rpm;
5, maximum speed: 2200rpm;
6, the type of cooling: air-cooled.
In the present invention, two-way DC/DC converter can select the two-way DC/DC converter at least meeting following multiple parameter index:
1, low-pressure end operating voltage range: 220 ~ 480VAC;
2, low-pressure end electric current: 110A;
3, low-pressure end maximum power: 50KW;
4, high-pressure side operating voltage range: 400 ~ 600VDC;
5, high-pressure side electric current: 110A;
6, high-pressure side maximum power: 50KW;
7, maximal efficiency: 94;
8, wide loading range: 92;
9, control and protective feature: there is two side overvoltages, under-voltage protection, have both sides cross stay, short-circuit protection.
The shell of the super capacitor module in the present invention can adopt aluminum alloy materials, and anodized is done on its surface, and its overall dimension (L*W*H) can be designed to 416*190*205mm, and its weight is preferably less than 14.5Kg.
In the present invention, the super capacitor module of ten 50.4V166F can be adopted, adopt an EV04C from control box, adopt an EV02B primary control box, adopt the current sensor of a 300A/75mV, adopt a LEV100 pre-charge-relay, adopt the circuit breaker of a DM400M2300R315ADC750V, adopt the pre-charge resistance of a 100 ohm/200W, adopt a 220VAC/DC24V-50W Switching Power Supply, adopt a 400A/600V fuse, adopt the accurate cabinet of a station symbol, adopt the contactor of an EV200 not with auxiliary contact.
In the present invention, after use super capacitor power compensates, can realize using low power net electricity, drive heavy-duty motor.As used the network transformer of 110KVA, when super capacitor compensates 50KW power, can be the motor of 150KW with kinetic power.
When system required power compensates, during as carried out lifting operation, controlling two-way DC/DC converter by PLC is boost mode, is discharged to DC bus by super capacitor module, supplements adjustable frequency motor power demand.
When system is in standby, braking or small-power runs, unloads pipe as carried out, when transferring operation, controlling two-way DC/DC converter by PLC is decompression mode, is charged by DC bus to super capacitor module, simultaneously stability partial brake power.
When grid power blackout, super capacitor module also can provide certain energy, enables workover rig complete lifting restoring step.
Although with reference to previous embodiment to invention has been detailed description; for a person skilled in the art; it still can be modified to the technical scheme described in foregoing embodiments; or equivalent replacement is carried out to wherein portion of techniques feature; within the spirit and principles in the present invention all; any amendment of doing, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. the electric motor drive system for workover treatment, it comprises filter circuit A, controlled rectifier, filter circuit B, frequency converter, bidirectional DC-DC converter, super capacitor controller, super capacitor module, PLC and adjustable frequency motor, it is characterized in that:
Three phase mains is connected with the rectification input of described controlled rectifier by described filter circuit A, the rectification output end of described controlled rectifier is connected with described filter circuit B and described frequency converter successively by DC bus, the output of described frequency converter is connected with the power input of described adjustable frequency motor, described adjustable frequency motor drives winch to carry out workover treatment, and described PLC is connected respectively by the control input end of fieldbus with described super capacitor controller and described controlled rectifier;
The high-pressure side positive pole of described bidirectional DC-DC converter is connected with the rectification output end positive pole of controlled rectifier, the high-pressure side negative pole of described bidirectional DC-DC converter is connected with the rectification output end negative pole of described controlled rectifier, the low-pressure side positive pole of described bidirectional DC-DC converter is connected with the positive pole of described super capacitor module, the low-pressure side negative pole of described bidirectional DC-DC converter is connected with the negative pole of described super capacitor module, the signal output part of described super capacitor module is connected with the signals collecting input of described super capacitor controller, the DC-DC control output end of described super capacitor controller is connected with the control input end of described bidirectional DC-DC converter.
2. a kind of electric motor drive system for workover treatment according to claim 1, is characterized in that: described super capacitor controller comprises capacitance management mainboard, capacitance management from plate and current signal collector;
Capacitance management mainboard is connected from plate with capacitance management by CAN, capacitance management is connected from the current detecting end of plate with the signal output part of current signal collector, current signal collector is connected on the negative pole end of super capacitor module, capacitance management is connected from the total voltage/Insulation monitoring end of plate with the positive terminal of super capacitor module, capacitance management is connected from the capacitance information collection terminal of plate by the signal output part of signal terminal with super capacitor module, and capacitance management is connected from the DC-DC control output end of plate with the control input end of bidirectional DC-DC converter.
3. a kind of electric motor drive system for workover treatment according to claim 2, is characterized in that: described current signal collector is current sensor or shunt.
4. a kind of electric motor drive system for workover treatment according to claim 2, it is characterized in that: the voltage signal inputs of described signal terminal is connected with the voltage signal output end of super capacitor module, the overvoltage signal input part of signal terminal is connected with the overvoltage signal output part of super capacitor module, the temperature signal input of signal terminal is connected with the temperature signal output of super capacitor module, the output of signal terminal is connected with the signal output part of supercapacitive cell, the signal output part of signal terminal is connected with the capacitance information collection terminal of capacitance management from plate.
5. a kind of electric motor drive system for workover treatment according to claim 1, it is characterized in that: described filter circuit A comprises filter inductance L1, filter inductance L2 and filter inductance L3, three outputs of three phase mains are connected with three rectification inputs of controlled rectifier with filter inductance L3 respectively by filter inductance L1, filter inductance L2.
6. a kind of electric motor drive system for workover treatment according to claim 1, is characterized in that: described filtering electricity B comprises filter capacitor C1, and filter capacitor C1 is connected in parallel between the both positive and negative polarity of the rectification output end of controlled rectifier.
7. a kind of electric motor drive system for workover treatment according to claim 1, it is characterized in that: described bidirectional DC-DC converter comprises DC-DC output circuit, DC-DC output circuit comprises direct current output capacitance C2, pre-charge resistance, pre-charge-relay and total positive relay;
One end of direct current output capacitance C2 is connected with one end of the low-pressure side positive pole of bidirectional DC-DC converter, one end of pre-charge resistance and total positive relay respectively;
The other end of direct current output capacitance C2 is connected with the negative pole of super capacitor module; The other end of pre-charge resistance is connected with one end of pre-charge-relay, and the other end of pre-charge-relay is connected with total positive other end of relay and the positive pole of super capacitor module respectively.
8. a kind of electric motor drive system for workover treatment according to claim 1, it is characterized in that: described electric motor drive system also comprises touch display, touch display is connected with described PLC.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510661562.5A CN105227038A (en) | 2015-10-15 | 2015-10-15 | A kind of electric motor drive system for workover treatment |
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| CN201510661562.5A CN105227038A (en) | 2015-10-15 | 2015-10-15 | A kind of electric motor drive system for workover treatment |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5872397A (en) * | 1981-10-19 | 1983-04-30 | ヒユ−ズ・ツ−ル・カンパニ− | Speed alternating device for ac motor |
| JPS5889093A (en) * | 1981-11-21 | 1983-05-27 | Rohm Co Ltd | Speed controller for motor |
| CN204416995U (en) * | 2015-02-05 | 2015-06-24 | 成都坤宝石油科技有限公司 | A kind of service machine power management system |
| CN105186961A (en) * | 2015-09-22 | 2015-12-23 | 国网山东东营市东营区供电公司 | Motor driving system used for workover treatment |
| CN205039734U (en) * | 2015-10-15 | 2016-02-17 | 三峡大学 | A electromotor drive system for workover |
-
2015
- 2015-10-15 CN CN201510661562.5A patent/CN105227038A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5872397A (en) * | 1981-10-19 | 1983-04-30 | ヒユ−ズ・ツ−ル・カンパニ− | Speed alternating device for ac motor |
| JPS5889093A (en) * | 1981-11-21 | 1983-05-27 | Rohm Co Ltd | Speed controller for motor |
| CN204416995U (en) * | 2015-02-05 | 2015-06-24 | 成都坤宝石油科技有限公司 | A kind of service machine power management system |
| CN105186961A (en) * | 2015-09-22 | 2015-12-23 | 国网山东东营市东营区供电公司 | Motor driving system used for workover treatment |
| CN205039734U (en) * | 2015-10-15 | 2016-02-17 | 三峡大学 | A electromotor drive system for workover |
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