CN1787361A - Method for operating flexible powering frequency changing regulating speed control apparatus of direct control oil pumping unit - Google Patents
Method for operating flexible powering frequency changing regulating speed control apparatus of direct control oil pumping unit Download PDFInfo
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- CN1787361A CN1787361A CNA2005100480739A CN200510048073A CN1787361A CN 1787361 A CN1787361 A CN 1787361A CN A2005100480739 A CNA2005100480739 A CN A2005100480739A CN 200510048073 A CN200510048073 A CN 200510048073A CN 1787361 A CN1787361 A CN 1787361A
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Abstract
This invention discloses an operation method for a soft drag frequency conversion adjusting control device of a direct-control pumping unit including a frequency converter and a control device and the control device includes a test module, a key module, a central processing module, a display module, an output module and a control volume input module circuit, among which, the test module and the key module circuit send the test signals of current and voltage and key orders to the CPU, which outputs or displays the result and display volume and converts them to analog signals to be sent to the analog control input end of the converter, the analog volume input module circuit has two output ends, one of which is connected with the CPU, the other with the output module circuit, the CPU sends the output analog signals and 0-10V analog signals output by a potentiometer to the converter to realize the conversion control to drag motors.
Description
Technical field
The present invention relates to the control appliance and the method for dynamo-electric gear, be exclusively used in the frequency converter that oil-field oil pumper drags.
Background technology
At present, oil pumper is that rigidity drags, and system motion is independent of load, makes horse head move near the simple harmonic motion of rigidity, and the decelerator peak torque is big, moment of torsion inequality extent height, and impact load is big, and whole dynamic performance is relatively poor.What show is that motor power output excursion is very big, and average power is less relatively.In order to satisfy the needs of this certain loads, when selecting motor rated power, need be principle to satisfy the oil pumper maximum power, its result causes the low and energy waste greatly of motor operational efficiency, has increased system cost.And the energy-saving effect of existing oil pumper RHVC is not very remarkable, moreover the variation of tracking bearing power that can not be real-time and change the input power and the power output (input power of motor) of frequency converter causes above-mentioned defective to can not get reversing always.
Summary of the invention
The load utilization that the objective of the invention is in order to solve the oil pumper dragging motor is generally lower, the problem that energy waste is bigger, adopted 16 single-chip microcomputer 80C196KC of CHMOS high-performance technology to detect the input power or the power output of oil pumper RHVC frequency converter in real time, online in real time is adjusted rotating speed of motor, arteface goes out artificial oil pumper drag characteristics curve, make it as far as possible to the average power content convergence, it is steady to reach variable power, reduce maximum power, promote minimum power, thereby can reduce the rated power of motor, improve the purpose of the operating efficiency of system.Promptly when power is big, suitable reduction motor speed; At power hour, suitably improve rotating speed of motor, make system have higher operating efficiency on the one hand, guaranteed also that on the other hand the stroke jig frequency of oil pumper is constant substantially.The variation tendency of system power is slowed down, thus the control of the Flexible Drag of the system of realization.Frequency converter can be worked on certain frequency according to the setting of potentiometer under nominal situation.This Device Testing system will detect input voltage and input current or the output current and the output voltage of frequency converter.Control device calculates frequency converter according to the voltage and current that detects and inputs or outputs average power in a period of time after control device starts, subsequently again according to the setting of program, directly the variation of the given frequency of control of conversion device is the variation of input power or power output, and the input power of variation or power output are tried one's best to the average power content convergence.Make oil pumper variable power in running steady, reduce maximum power, promote minimum power, reduce motor rated power, improve the operating efficiency of system.Display system then demonstrates real-time voltage, electric current, power, the given frequency of frequency converter and the scope that frequency change is adjusted that frequency converter inputs or outputs end.
Technical solution of the present invention is achieved in that
A kind of method of operation of flexible powering frequency changing regulating speed control apparatus of direct control oil pumping unit, comprise frequency converter and control device, wherein said control device comprises detection module circuit, key-press module circuit, central processing module circuit, display module circuit, output module circuit and controlled quentity controlled variable input module circuit, wherein said detection module circuit is electrically connected with the central processing module circuit, by detection, its signal is sent into CPU after the effective value conversion to frequency converter input current and input voltage or output current and output voltage; The key-press module circuit is electrically connected with the central processing module circuit, and the command signal of button is sent into CPU by photoelectrical coupler; CPU is exported its result and demonstration amount by read-write and signal processing to program; The display module circuit is electrically connected with CPU, comes display voltage, electric current, power, frequency and excursion thereof by drive circuit and displaying block; The output module circuit is accepted result's output of CPU, is converted to analog signal by number and sends into frequency converter, and its revolution is controlled; Analog quantity input module circuit has two outputs, one end connects CPU, one termination output module circuit, 0～10V analog quantity of potentiometer output is sent into CPU and/or the reference frequency of frequency converter is controlled through operational amplification circuit, it is characterized in that also comprising following operating procedure:
(1) by the detection module circuit, detect the voltage signal VIN and the current signal IIN of the output of voltage sensor and current sensor simultaneously, the voltage signal VAD and the current signal IAD of its output sent into single-chip microcomputer IC1 through operational amplifier IC12A, IC12B and effective value transducer;
(2) by key-press module circuit input the corresponding command signal, signal enters single-chip microcomputer IC1 through photoelectrical coupler;
(3) single-chip microcomputer IC1 output content displayed, adopt 3 line serial line interfaces to transmit these data and enter eight Bits Serial cloudy LED liquid crystal numberal tube dynamic scan circuit MAX7219 altogether, connection DIN, CLK and LOAD3 interface are finished the demonstration of eight LED charactron TOF5461AH are controlled and driven;
(4) single-chip microcomputer IC1 is according to the setting output digital quantity AD0～AD7 of program, and its signal enters the analog quantity CVDA that D/A converting circuit DAC0832 is converted into 0～10V;
(5) potentiometer output voltage values CVIN sends signal into single-chip microcomputer IC1 through two operational amplifiers;
(6) by the single-ended monolithic variable connector of 8 passages CD4051, by its interface P1.5 signal is selected one and output X connection in X1, X2 passage, make by the analog quantity CVDA of digital to analog converter output and/or the voltage CVIN of potentiometer output and select one output according to program setting, when its output be the potentiometer analog quantity time, keep frequency converter under certain rotating speed, moving; When its during for the analog quantity of digital-to-analogue conversion output, this analog quantity enters the analog quantity input terminal of frequency converter, realizes the real-time control to the rotating speed that is the power of frequency converter.
Compared with prior art, advantage of the present invention is conspicuous, mainly shows: can make pumping unit system realize not having the operation of impact, reduce peak load; Can reduce the oil pumper installed power significantly; Reduce the model of oil pumper; The motor power draw is tended to be steady, and energy-saving effect is remarkable.Flexible Drag and frequency conversion drag with power frequency and drag the operation conditions contrast, and average individual well peak load descends 6.8%, 11.2% respectively; Peak current descends 12.7%, 30.6% respectively; Active power descends 19.9%, 22.2% respectively.
Description of drawings
Fig. 1 is the conspectus of voltage sensor.
Fig. 2 is the conspectus of current sensor.
Fig. 3 is a voltage effective value change-over circuit schematic diagram.
Fig. 4 is a current effective value change-over circuit schematic diagram.
Fig. 5 is the key-press module circuit diagram.
Fig. 6 is the circuit diagram of photoelectrical coupler.
Fig. 7 is special-purpose charactron display circuit schematic diagram.
Fig. 8 is the d convertor circuit schematic diagram.
Fig. 9 is a potentiometer input circuit schematic diagram.
Figure 10 is a monolithic multi-way switch circuit schematic diagram.
Figure 11 is the central processing module circuit diagram.
Figure 12 is a system architecture diagram of the present invention.
Figure 13 is the schematic diagram of control panel of the present invention.
Figure 14 is an operation sequence flow chart of the present invention.
Figure 12 is a specification digest accompanying drawing of the present invention.
Among the figure: 1, current sensor 2, effective value transducer 3, voltage sensor 4, effective value transducer 5, button input and controller 6, photoelectricity coupling 7, program storage 8, special-purpose charactron display circuit 9, displaying block 10, digital converter 11, monolithic variable connector 12, frequency converter input 13, operational amplifier 14, potentiometer 100, detection module circuit 200, key-press module circuit 300, central processing module circuit 400, display module circuit 500, output module circuit 600, controlled quentity controlled variable output module circuit.
Embodiment
As Fig. 1～shown in Figure 14, a kind of method of operation of flexible powering frequency changing regulating speed control apparatus of direct control oil pumping unit, comprise frequency converter and control device, wherein said control comprises detection module circuit, key-press module circuit, central processing module circuit, display module circuit, output module circuit and controlled quentity controlled variable input module circuit, wherein said detection module circuit is a KV50/AP type magnetic balance type voltage sensor, utilize 1 of CON4, measuring junction is gone in 4 corner connections, during measuring voltage, tested voltage is by resistance R 1; R2; R3; R4; R5 is connected with transducer.Output current VIN is directly proportional with tested voltage.Also comprise KT150A type magnetic balance type current sensor in this module, output current IIN is proportional to tested electric current.The voltage VIN of voltage sensor output enters effective value change-over circuit AD536 through LF353 operational amplifier IC12A, and its output voltage V AD then enters single-chip microcomputer 80C196KC; The electric current I IN of current sensor output enters effective value change-over circuit AD536 through LF353 operational amplifier IC12B, and its output current IAD also enters single-chip microcomputer 80C196KC.
Described key-press module circuit by stop key (reset key) CON1, operation key CON2, options button CON3, increase key CON4, reduce key CON5 and form.When push button signalling was imported, signal entered single-chip microcomputer 80C196KC by photoelectrical coupler.
Described display module circuit is accepted single-chip microcomputer output content displayed, transmit data by 3 line serial line interfaces and enter eight Bits Serial cloudy LED charactron dynamic scan drive circuit MAX7219 altogether, use 3 interface DIN, LCK, LOAD, finish demonstration control and driving eight LED charactron TOF-5461AH.
Described central processing module circuit comprises single-chip microcomputer 80C196KC and program storage 28C64, single-chip microcomputer calculates average power according to the magnitude of current and the voltage gathered, and detect instantaneous power in real time, setting output digital quantity AD0-AD7 according to program, digital signal enters D/A converting circuit DAC0832, the digital quantity of output is changed into the analog quantity CVDA of 0-10V.
Described controlled quentity controlled variable input module circuit is made up of potentiometer and operational amplifier, and potentiometer output voltage values CVIN enters single-chip microcomputer 80C196KC through two amplifier LF353, another output order sheet variable connector of potentiometer.Monolithic variable connector CD4051 is a kind of single-ended 8 channel switchs, can select one in the X2 passage by the P1.5 signal at X1, and input and output X is connected.The analog quantity CVDA and the potentiometer output voltage amount CVIN of digital to analog converter DAC0832 output select output variable according to the setting of program.The analog quantity of output enters the analog quantity input terminal of frequency converter, realizes the control to the rotating speed that is the power of frequency converter.
The method of operation of speed regulating control of the present invention is:
At first, connect the power supply of flexible powering frequency changing regulating speed control apparatus of direct control oil pumping unit, its voltage is respectively ± 15V, 5V, 0V (this power supply is by being output as ± 15V, 5V, the Switching Power Supply of 0V provides).Secondly, 1. press the operation key, device is in running status, and green indicating lamp is bright.In 3 minutes of system's operation, the output voltage values of potentiometer is V0; 2. the frequency values of corresponding output is H0, through monolithic variable connector CD4501, enters the analog quantity input of frequency converter, the output of control of conversion device.Change the output voltage values of potentiometer, the variation that the output frequency value of frequency converter is corresponding with it.The voltage sensor KV50A/P of control device and current sensor KT150A, the electric current of Measurement for Inverter input or output and voltage through effective value change-over circuit AD536, enter the single-chip microcomputer 80C196KC in the central processing module; 3. according to the setting of program through 3 minutes, calculate the average power content P1 of input or output, the alternately flicker of this moment green indicating lamp and red led.The digital quantity of single-chip microcomputer output H value institute corresponding voltage value, pass through D/A converting circuit DAC0832 again, digital quantity is changed into analog quantity, enter monolithic variable connector CD4051, select this analog quantity to output to the analog quantity input terminal of frequency converter, the output of control of conversion device.4. press options button, can selectively show frequency converter the input or output current, input or output single-phase voltage, input or output power P, output frequency and frequency adjustment amplitude, ao H.5. by increasing-and-decreasing key up and down, can regulating frequency amplitude of accommodation Δ H value, promptly change the scope that output frequency fluctuates up and down, to adapt to the hole condition of different pumpingh well specific loads.Output frequency is the center with H0 exactly, is that scope fluctuates up and down with Δ H.So just solve the contradiction between the varying load characteristic of the asynchronous motor of constant load and oil pumper, made the variation tendency of system power curve slow down, realized the control of Flexible Drag, reached energy saving purposes.6. if press stop key, this device is in stopped status, and red led is bright.The output voltage values V0 of potentiometer (the frequency values H0 of corresponding output) through monolithic variable connector CD4501A/P, enters the analog quantity input of frequency converter, the output of control of conversion device.Change the output voltage values of potentiometer, the variation that the output frequency value of frequency converter is corresponding with it.Press options button, can selectively show the input or output current of frequency converter; Input or output single-phase voltage; Input or output power P; Frequency converter directly drags oil pumper and controls.
Claims (1)
1, a kind of method of operation of flexible powering frequency changing regulating speed control apparatus of direct control oil pumping unit, comprise frequency converter and control device, wherein said control device comprises detection module circuit (100), key-press module circuit (200), central processing module circuit (300), display module circuit (400), output module circuit (500) and controlled quentity controlled variable input module circuit (600), wherein said detection module circuit (100) is electrically connected with central processing module circuit (300), by detection, its signal is sent into CPU after the effective value conversion to frequency converter input current and input voltage or output current and output voltage; Key-press module circuit (200) is electrically connected with central processing module circuit (300), and the command signal of button is sent into CPU by photoelectrical coupler; CPU is exported its result and demonstration amount by read-write and signal processing to program; Display module circuit (400) is electrically connected with CPU, comes display voltage, electric current, power, frequency and excursion thereof by drive circuit and displaying block; Output module circuit (500) is accepted result's output of CPU, is converted to analog signal by number and sends into frequency converter, and the revolution of motor is controlled; Analog quantity input module circuit (600) has two outputs, one end connects CPU, one termination output module circuit, 0～10V analog quantity of potentiometer output is sent into CPU and/or the reference frequency of frequency converter is controlled through operational amplification circuit, it is characterized in that comprising following operating procedure:
(1) by the detection module circuit, detect the voltage signal VIN and the current signal IIN of the output of voltage sensor and current sensor simultaneously, the voltage signal VAD and the current signal IAD of its output sent into single-chip microcomputer IC1 through operational amplifier IC12A, IC12B and effective value transducer;
(2) by key-press module circuit input the corresponding command signal, signal enters single-chip microcomputer IC1 through photoelectrical coupler;
(3) single-chip microcomputer IC1 output content displayed, adopt 3 line serial line interfaces to transmit these data and enter eight Bits Serial cloudy LED liquid crystal numberal tube dynamic scan circuit MAX7219 altogether, connection DIN, CLK and LOAD3 interface are finished the demonstration of eight LED charactron TOF5461AH are controlled and driven;
(4) single-chip microcomputer IC1 is according to the setting output digital quantity AD0～AD7 of program, and its signal enters the analog quantity CVDA that D/A converting circuit DAC0832 is converted into 0～10V;
(5) potentiometer output voltage values CVIN sends signal into single-chip microcomputer IC1 through two operational amplifiers;
(6) by the single-ended monolithic variable connector of 8 passages CD4051, by its interface P1.5 signal is selected one and output X connection in X1, X2 passage, make by the analog quantity CVDA of digital to analog converter output and/or the voltage CVIN of potentiometer output and select one output according to program setting, when its output be the potentiometer analog quantity time, keep frequency converter under certain rotating speed, moving; When its during for the analog quantity of digital-to-analogue conversion output, this analog quantity enters the analog quantity input terminal of frequency converter, realizes the real-time control to the rotating speed that is the power of frequency converter.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100480739A CN100359797C (en) | 2005-12-13 | 2005-12-13 | Method for operating flexible powering frequency changing regulating speed control apparatus of direct control oil pumping unit |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100480739A CN100359797C (en) | 2005-12-13 | 2005-12-13 | Method for operating flexible powering frequency changing regulating speed control apparatus of direct control oil pumping unit |
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| CN1787361A true CN1787361A (en) | 2006-06-14 |
| CN100359797C CN100359797C (en) | 2008-01-02 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103018543A (en) * | 2012-12-18 | 2013-04-03 | 天津光电通信技术有限公司 | High-accuracy multichannel alternating voltage and current detection device |
| CN104570859A (en) * | 2014-12-19 | 2015-04-29 | 徐州工程学院 | Self-adaptive control system for main motor and auxiliary motor of straw briquetting machine |
| CN105007022A (en) * | 2015-09-02 | 2015-10-28 | 安徽钟南电器有限责任公司 | Frequency-conversing compensating and energy saving control apparatus of oil pumping unit in oil fields |
| CN106208901A (en) * | 2016-08-31 | 2016-12-07 | 苏州迈力电器有限公司 | Garbage crushing motor protective circuit |
| CN106301145A (en) * | 2016-08-31 | 2017-01-04 | 苏州迈力电器有限公司 | Garbage crushing motor running protection Circuits System |
| CN106452282A (en) * | 2016-08-31 | 2017-02-22 | 苏州迈力电器有限公司 | Garbage crushing motor protecting circuit system |
| CN106470007A (en) * | 2016-08-31 | 2017-03-01 | 北京雅丹石油技术开发有限公司 | A kind of pumping-unit motor variable-speed operation control method and flexible controller |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6325142B1 (en) * | 1998-01-05 | 2001-12-04 | Capstone Turbine Corporation | Turbogenerator power control system |
| CN2568810Y (en) * | 2002-07-26 | 2003-08-27 | 中国石油化工股份有限公司江苏油田分公司石油工程技术研究院 | Frequency control intelligent controller of pumping unit |
| JP4063251B2 (en) * | 2004-05-24 | 2008-03-19 | サンケン電気株式会社 | Inverter control device and oil collecting machine equipped with this inverter control device |
| JP4151611B2 (en) * | 2004-05-24 | 2008-09-17 | サンケン電気株式会社 | Inverter control device and oil collecting machine equipped with this inverter control device |
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2005
- 2005-12-13 CN CNB2005100480739A patent/CN100359797C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018543A (en) * | 2012-12-18 | 2013-04-03 | 天津光电通信技术有限公司 | High-accuracy multichannel alternating voltage and current detection device |
| CN104570859A (en) * | 2014-12-19 | 2015-04-29 | 徐州工程学院 | Self-adaptive control system for main motor and auxiliary motor of straw briquetting machine |
| CN105007022A (en) * | 2015-09-02 | 2015-10-28 | 安徽钟南电器有限责任公司 | Frequency-conversing compensating and energy saving control apparatus of oil pumping unit in oil fields |
| CN106208901A (en) * | 2016-08-31 | 2016-12-07 | 苏州迈力电器有限公司 | Garbage crushing motor protective circuit |
| CN106301145A (en) * | 2016-08-31 | 2017-01-04 | 苏州迈力电器有限公司 | Garbage crushing motor running protection Circuits System |
| CN106452282A (en) * | 2016-08-31 | 2017-02-22 | 苏州迈力电器有限公司 | Garbage crushing motor protecting circuit system |
| CN106470007A (en) * | 2016-08-31 | 2017-03-01 | 北京雅丹石油技术开发有限公司 | A kind of pumping-unit motor variable-speed operation control method and flexible controller |
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| CN100359797C (en) | 2008-01-02 |
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