CN101582667A - Petroleum extractor super capacitor auxiliary power system - Google Patents
Petroleum extractor super capacitor auxiliary power system Download PDFInfo
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- CN101582667A CN101582667A CNA200910051230XA CN200910051230A CN101582667A CN 101582667 A CN101582667 A CN 101582667A CN A200910051230X A CNA200910051230X A CN A200910051230XA CN 200910051230 A CN200910051230 A CN 200910051230A CN 101582667 A CN101582667 A CN 101582667A
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- super capacitor
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- auxiliary power
- converter
- extractor
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Abstract
The invention belongs to the technical field of petroleum extractor drive control, in particular relates to a petroleum extractor super capacitor auxiliary power system. In the system, a super capacitor auxiliary power supply is added on the basis of an oil extractor main power supply, the super capacitor auxiliary power supply is used for storing regeneration brake feedback energy when the horsehead of the oil extractor moves downwards and assisting the main power supply to supply power to a motor when the horsehead of the oil extractor moves upwards. The auxiliary power system is composed of a super capacitor module and a pressure regulator. As the super capacitor stores the regeneration brake feedback energy of the oil extractor and the energy is utilized to drive the motor of the oil extractor, a large amount of energy is saved. Owning to the characteristic of high power density of the super capacitor, high discharge current can be provided for assisting the main power supply to supply power during upward working by the horsehead, thus speed ability of upward stroke can be improved during oil extraction working by the horsehead. The system is widely applied, can be used in a beam pumping unit, and further can be applied in a sucker-rod pumping device such as a chain oil extractor and the like, thus having tremendous social and economic benefits.
Description
Technical field
The invention belongs to petroleum extractor Drive Control Technique field, be specifically related to a kind of petroleum extractor super capacitor auxiliary power system.
Background technology
In recent years, people are increasing to the demand of the energy, and are also more and more higher to requirements of saving energy.In petroleum industry, oil pumper can expend very big electric energy and extract oil in the oil well when recovering the oil.Oil rig is in the reciprocating motion that oil pumping the time is carried out, and downward movement is to be in on-position, and regenerative braking is energy savings, improves the key of oil rig dynamic characteristic when up, has remarkable economical and is worth and social benefit.In present oil pumper, mostly use mechanical mode to the up-down stroke balance, change a part of kinetic energy and gravitional force when descending.
The system complex of this scheme, environment in the open air compare under the condition of severe, and maintenance is inconvenient.And because reciprocating motion for a long time is bigger to the reliability effect of balanced controls.
Super capacitor is the up-to-date in recent years novel capacitor of developing, and the capacitance of this super capacitor is far longer than common electric capacity, and technology can reach more than tens thousand of farads at present.Production and selling is at home and abroad all arranged.It and general storage battery ratio of while, the power density of super capacitor is big, and under the occasion that frequently discharges and recharges a little, the life-span is long, and is suitable for very much the big situation of instantaneous power.Along with development of science and technology, the price of super capacitor will further reduce, and performance also will further improve.The oil pumping machinery in, super capacitor will have good application prospects.The present invention adopts super capacitor as the accessory power supply of drive motors motor to be powered, and adopts the scheme of the regenerative braking energy that its descending energy is preserved simultaneously.
Summary of the invention
The object of the present invention is to provide and a kind ofly can save energy, improve the used for oil extractor super capacitor auxiliary power system of oil pumper driveability.
Extractor super capacitor auxiliary power system provided by the invention is to increase super capacitor module and DC/DC conversion voltage regulator as accessory power supply on the basis of oil pumper electrical network main power source.Main power source provides oil pumper needed most of energy, when the horse head that drives at the walking beam of oil pumper moves downward, oil pumper regenerative braking feedback energy is by DC/DC conversion voltage regulator, form with electric energy is stored in the super capacitor, when the horse head of walking beam drive moves upward, the energy of storing in the super capacitor is discharged DC/DC conversion voltage regulator and the electrical network parallel connection is powered to motor.
The extractor super capacitor auxiliary power system that the present invention proposes specifically is constructed as follows:
1) super capacitor module is arranged at the drive part of oil pumper, the regenerative braking feedback energy when being used to absorb horse head and descending, and the assistance main power source is powered to motor when horse head rises;
2) a DC/DC conversion voltage regulator, the main power source with described super capacitor module and former oil pumper is connected with motor drive controller respectively;
3) on the circuit base of former pumping-unit motor control system, set up super capacitor voltage and current transducer and form, also set up the pwm control signal that is used to control DC/DC conversion voltage regulator, control discharging and recharging of main power source and super capacitor simultaneously by microprocessor;
Above-mentioned DC/DC conversion voltage regulator is made up of casing, the control circuit board, the DC/DC converter that are arranged in the casing; Described control circuit board is connected with line voltage transducer, power network current transducer, electric moter voltage transducer, motor current sensor, super capacitor voltage sensor, super capacitor current sensor and outside hand switch respectively by interface circuit;
Described control circuit board is provided with microprocessor, and this microprocessor can adopt single-chip microcomputer, DSP etc., and microprocessor is gathered voltage, current signal and manual control signal by filter circuit; The pwm signal of microprocessor output is through the working condition of light-coupled isolation device and each power device of drive control circuit DC/DC convertor controls; DC/DC converter part can adopt multiple widely used circuit, as converter or its various converters that combine such as boost, buck, cuk.
Extractor super capacitor auxiliary power system of the present invention has following obvious advantage:
1) because super capacitor storage oil pumper regenerative braking feedback energy is arranged, and these energy is used for the oil pumper drive motors again, has saved lot of energy.
2) by super capacitor storage oil pumper regenerative braking feedback energy, it is long that it discharges and recharges the more general life of storage battery
3) when the horse head rising of oil pumper was pumped, super capacitor assisted main power source to provide part energy to motor, and less to the energy that electrical network requires, the electrical network grade of requirement is lower.
4) because the super capacitor power density is big, when horse head rises acting, can assist the main power source power supply, so horse head is when the oil pumping acting with very big discharging current, the speed ability of upstroke can make moderate progress.
5) native system uses extensively, can use beam pumping unit, but further expanded application is to sucker-rod pumping equipment such as chain type oil pump.
Description of drawings
Fig. 1 is a system architecture diagram of the present invention.
Fig. 2 is a circuit structure frame of the present invention.
Voltage regulator DC/DC converter circuit schematic diagram among Fig. 3 embodiment.
Fig. 4 is the sense of current schematic diagram during oil pumper drive motors among the embodiment.
Fig. 5 is the sense of current schematic diagram during oil pumper braking motor among the embodiment.
Number in the figure: 1 is super capacitor auxiliary power system, 2 is the super capacitor module, and 3 is DC/DC conversion voltage regulator, and 4 is rectifier, 5 is driving control system for electric machine, 6 is voltage, current sensor, and 7 is control circuit board, and 8 is the DC/DC converter, 9 is filter circuit, 10 is microprocessor, and 11 is the photoelectricity coupling circuit, and 12 is the power device drive circuit.
Embodiment
Below in conjunction with accompanying drawing and example, the present invention is described in further detail.
Referring to Fig. 1～5, according to technical scheme of the present invention, on pumping-unit motor driving control system basis, set up a super capacitor auxiliary power system, this secondary power system is made up of super capacitor module and DC/DC conversion voltage regulator.The super capacitor module is meant by one group of the monomer series-connected one-tenth of several super capacitors, in parallel with some groups again and module that forms.Determine the super capacitor monomer number of every group of series connection according to the motor rated voltage, prevent how many energy that disposes the group number of super capacitor in parallel when descending according to horse head.
DC/DC conversion voltage regulator comprises, a casing is provided with control circuit board and DC/DC converter in the casing.Control circuit board is connected with voltage, current sensor (comprising main power voltage transducer, mains current transducer, electric moter voltage transducer, motor current sensor, super capacitor voltage sensor, super capacitor current sensor), hand regulator by interface circuit; The DC/DC converter partly adopts two-way, the step-up/step-down circuit of being made up of boost and buck circuit, as shown in Figure 4.
Control circuit board is provided with microprocessor, filter circuit, photoelectricity coupling circuit, power device drive circuit etc., and microprocessor adopts DSP, gathers voltage, current signal, accelerator pedal and brake pedal signal by filter circuit; The pwm signal of DSP output is through the action of photoelectric coupled device and each power device of drive circuit control DC/DC converter; Filter circuit adopts the filter circuit of typically being built by operational amplifier; Photoelectric isolating circuit is realized by optocoupler; The required various level of controller are provided through common DC/DC Switching Power Supply by power taking on the main power source.
Power device T1, T2, T3, T4 form two-way, buck-boost converter circuit, as shown in Figure 3.Wherein T1, T2 link to each other with the super capacitor module, and T3, T4 link to each other with the positive and negative electrode of main power source respectively.Four power devices constantly only have one to be in the PWM operating state at each, wherein, form during T1 work and drive buck converter, form during T4 work and drive booster converter, form the braking booster converter during T2 work, form the braking buck converter during T3 work.DC/DC conversion voltage regulator control circuit board microprocessor is according to the super capacitor module voltage, the main power voltage that collect, and artificially control the DC/DC converter and be in one of above-mentioned four kinds of operating states, realize of the storage of oil pumper regenerating braking energy, perhaps make the super capacitor module assist electrical network to power to motor to the super capacitor module.
Pumping-unit motor is a permagnetic synchronous motor, 37KW, rated voltage 380V; Also can adopt permanent magnet brush direct current machine or asynchronous machine.
Main power source is provided through the AC/DC circuit by electrical network.
The super capacitor module is rated voltage 640v, and (300 monomer series-connected members of 1.8v/1000F super capacitor can also adopt power transistor GTR or Metal-oxide-semicondutor type field effect transistor M OSFET or gate turn off thyristor GTO to energy storage 135wh.
Used microprocessor adopts TI company's T MS320LF2407DSP; Voltage sensor adopts current mode 700V voltage sensor; Current sensor adopts current mode 200A current sensor.The PWM modulating frequency is 20KHz; Signals collecting and control cycle are got 1ms; Adopt the PI control algolithm.
Concrete operation principle of the present invention is:
When pumping unit horsehead is up, and super capacitor module voltage is when being higher than 537v, and T2, T3, T4 turn-off, and T1 works in the PWM chopping modulation, realizes the driving decompression transformation of DC/DC converter, and the super capacitor module assists main power source to power to motor.
When pumping unit horsehead is up, and super capacitor module voltage is when being lower than 537v, the T1 conducting, and T2, T3 turn-off, and T4 works in the PWM chopping modulation, realizes the driving boosting inverter of DC/DC converter, and the super capacitor module assists main power source to power to motor.
During the descending regenerative braking of pumping unit horsehead, and when super capacitor module voltage was lower than 537v, T1, T2, T4 turn-offed, and T3 works in the PWM chopping modulation, realize the braking decompression transformation of DC/DC converter, oil pumper regenerative braking feedback energy is stored in the super capacitor module by the DC/DC converter.
During the descending regenerative braking of pumping unit horsehead, and when super capacitor module voltage is higher than 537v, the T3 conducting, T1, T4 turn-off, T2 works in the PWM chopping modulation, realize the braking boosting inverter of DC/DC converter, oil pumper regenerative braking feedback energy is stored in the super capacitor module by the DC/DC converter.
Claims (5)
1. petroleum extractor super capacitor auxiliary power system is characterized in that this system is constructed as follows:
1) a super capacitor module is arranged on the oil pumper, is used to absorb the regenerative braking feedback energy of pumping unit horsehead when descending, assists main power source to power to motor when pumping unit horsehead is up;
2) a DC/DC conversion voltage regulator, the AC/DC converter with described super capacitor module and former oil pumper is connected with motor drive controller respectively;
Above-mentioned DC/DC conversion voltage regulator comprises, a casing, is arranged at control circuit board, DC/DC converter in the casing; Control circuit board is connected with main power voltage transducer, mains current transducer, electric moter voltage transducer, motor current sensor, super capacitor voltage sensor, super capacitor current sensor, hand regulator by interface circuit; Control circuit board is provided with microprocessor, and microprocessor is gathered voltage, current signal, manual adjustments signal by the filter circuit device; The pwm signal of microprocessor output is through the action of photoelectric coupled device and each power device of drive circuit control DC/DC converter;
3) on the circuit base of former pumping-unit motor control system, set up super capacitor voltage sensor and current sensor, set up the pwm control signal that is used to control DC/DC conversion voltage regulator, make microprocessor can control discharging and recharging of main power source and super capacitor simultaneously.
2. petroleum extractor super capacitor auxiliary power system as claimed in claim 1 is characterized in that, described microprocessor adopts single-chip microcomputer or DSP device; Described DC/DC converter using boost, buck, cuk converter or its converter that combines.
3. petroleum extractor super capacitor auxiliary power system as claimed in claim 1, it is characterized in that described motor adopts common DC motor or permanent magnet brush direct current machine or permanent-magnet brushless DC electric machine or permagnetic synchronous motor or switched reluctance machines or asynchronous machine.
4. petroleum extractor super capacitor auxiliary power system as claimed in claim 1, it is characterized in that described DC/DC inverter power device adopts power transistor GTR or Metal-oxide-semicondutor type field effect transistor M OSFET or insulated gate bipolar transistor IGBT or gate turn off thyristor GTO.
5. petroleum extractor super capacitor auxiliary power system as claimed in claim 1 is characterized in that, described main power source is an electrical network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200910051230XA CN101582667A (en) | 2009-05-14 | 2009-05-14 | Petroleum extractor super capacitor auxiliary power system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200910051230XA CN101582667A (en) | 2009-05-14 | 2009-05-14 | Petroleum extractor super capacitor auxiliary power system |
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| CN101582667A true CN101582667A (en) | 2009-11-18 |
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| CNA200910051230XA Pending CN101582667A (en) | 2009-05-14 | 2009-05-14 | Petroleum extractor super capacitor auxiliary power system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403913A (en) * | 2010-09-15 | 2012-04-04 | 中国石油集团渤海石油装备制造有限公司 | Electric power system of power-driven oil special vehicle |
| CN103414337A (en) * | 2013-08-23 | 2013-11-27 | 中国矿业大学 | Topological structure of power converter of electric car switch reluctance motor |
| CN105391357A (en) * | 2015-12-10 | 2016-03-09 | 中国飞机强度研究所 | Direct-current motor driving system for dynamic performance test stand |
| CN106856320A (en) * | 2015-12-09 | 2017-06-16 | 青岛中石大蓝天石油技术有限公司 | A kind of oil well terminal voltage protection circuit |
| CN108574436A (en) * | 2018-04-20 | 2018-09-25 | 宝鸡石油机械有限责任公司 | A kind of servo-driver electric energy recovering system and electric energy recovery method |
| CN108695965A (en) * | 2018-08-15 | 2018-10-23 | 武汉康奥斯机电装备有限公司 | A kind of subway gantry crane using super capacitor |
-
2009
- 2009-05-14 CN CNA200910051230XA patent/CN101582667A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403913A (en) * | 2010-09-15 | 2012-04-04 | 中国石油集团渤海石油装备制造有限公司 | Electric power system of power-driven oil special vehicle |
| CN103414337A (en) * | 2013-08-23 | 2013-11-27 | 中国矿业大学 | Topological structure of power converter of electric car switch reluctance motor |
| CN106856320A (en) * | 2015-12-09 | 2017-06-16 | 青岛中石大蓝天石油技术有限公司 | A kind of oil well terminal voltage protection circuit |
| CN105391357A (en) * | 2015-12-10 | 2016-03-09 | 中国飞机强度研究所 | Direct-current motor driving system for dynamic performance test stand |
| CN108574436A (en) * | 2018-04-20 | 2018-09-25 | 宝鸡石油机械有限责任公司 | A kind of servo-driver electric energy recovering system and electric energy recovery method |
| CN108695965A (en) * | 2018-08-15 | 2018-10-23 | 武汉康奥斯机电装备有限公司 | A kind of subway gantry crane using super capacitor |
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Application publication date: 20091118 |