CN106774140A - A kind of oil-field oil pumper energy-saving control method and control system - Google Patents
A kind of oil-field oil pumper energy-saving control method and control system Download PDFInfo
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- CN106774140A CN106774140A CN201710102845.5A CN201710102845A CN106774140A CN 106774140 A CN106774140 A CN 106774140A CN 201710102845 A CN201710102845 A CN 201710102845A CN 106774140 A CN106774140 A CN 106774140A
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- oil pumper
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/058—Safety, monitoring
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/16—Plc to applications
- G05B2219/163—Domotique, domestic, home control, automation, smart, intelligent house
Abstract
The invention discloses a kind of oil-field oil pumper energy-saving control method and control system, after selection Energy Saving Control pattern, start oil pumper when continuous liquid weight is weighed more than preheating to start working, after oil pumper works a cycle of operation, judge whether whether continuous liquid weight weigh with oil pumper in light condition more than shutdown successively, if continuous liquid weight be not more than shutdown weigh or oil pumper be in light condition if close oil pumper, and start oil pumper after an outage period, judge whether system terminates operation if continuous liquid weight is weighed more than shutdown and oil pumper is not at light condition, oil pumper works on a cycle of operation if not terminating, repeat the above steps, Energy Saving Control pattern is jumped out if terminating, the present invention realizes that oil pumper is energy-efficient to be automatically controlled.
Description
Technical field
The present invention relates to oilfield exploitation technical field, and in particular to a kind of oil-field oil pumper energy-saving control method and control system
System.
Background technology
Oil pumper is a kind of cycle cycling alternating load, and with impact, rotary inertia is larger, and is that bringing onto load is started, because
This required starting torque is larger, and the motor power (output) of demand is also larger.Oil pumper fluctuation of load in a cycle is very big, in order to
Meet start request, it is ensured that oil pumper larger inertia torque can be overcome during loaded starting so that there are enough overloads during operation
Ability, to overcome the peak torque of alternate load, it is desirable to leave enough surpluses when motor is selected, this results in oil pumping
, often in the operation conditions of " low load with strong power ", motor is in oil pumper running in underloading for the motor of machine
State, rate of load condensate is very low, and the operational efficiency of motor is very low.In oil pumper running, the size and phase of motor electric current
It is also what is be continually changing in a jig frequency, there are two moment generating states in a jig frequency.It is negative that motor belongs to perception
Carry, current hysteresis cause to produce reactive current after voltage, and power factor is smaller, also results in the waste of electric energy.On the other hand, when
During braking or transferring potential energy loading high, motor is in regenerative braking to the drive motor of transducer drive oil pumper
State, the mechanical energy in transmission system is converted into electric energy by motor, and fly-wheel diode is by this energy feedback in frequency converter
To in frequency converter DC bus capacitor C, DC voltage is raised, produce pumping voltage, if discharging this portion of energy not in time,
Frequency converter overvoltage protection will certainly be caused to act or cause the excessive pressure damages of major loop high power device.Pumping voltage is by resistance
Dissipation energy, not only wastes the energy, and some side effects can be also produced sometimes.
The content of the invention
For the deficiencies in the prior art, it is an object of the invention to provide a kind of energy-saving control method of oil pumping machine and
Control system, realizes the energy-efficient purpose for automatically controlling.
The technical proposal of the invention is realized in this way：
A kind of oil-field oil pumper energy-saving control method, comprises the following steps：
Step one：Judge whether to select Energy Saving Control pattern, if selection Energy Saving Control pattern, after a preheating cycle
Into step 2, manual operation mode is entered if non-selected Energy Saving Control pattern；
Step 2：Judge whether continuous liquid weight weighs more than preheating, step is entered if continuous liquid weight is weighed more than preheating
Three, if continuous liquid weight is weighed less than or equal to preheating, the step is repeated after a preheating cycle, until continuous liquid weight is more than pre-
Untill heat is weighed into step 3；
Step 3：Start oil pumper to start working, oil pumper enters step 4 after one cycle of operation of work；
Step 4：Judge whether continuous liquid weight weighs more than shutdown, step is entered if continuous liquid weight is weighed more than shutdown
Five, if continuous liquid weight is weighed less than or equal to shutdown, close oil pumper, and the return to step two after an outage period；
Step 5：Judge that whether oil pumper, in light running state, enters if oil pumper is not at light running state
Enter step 6, if oil pumper is in light condition, close oil pumper, and the return to step two after an outage period；
Step 6：Judge whether system terminates operation, if judging to jump out energy conservation model if system finishing runs, if sentencing
Disconnected system does not terminate the operation then return to step four after a cycle of operation.
Further, the continuous liquid weight is oil well liquid output amount.
Further, in the step one and step 2, the scope of preheating cycle is 5 ± 2min；In the step 2, preheating
The scope weighed is 10 ± 5kg.
Further, the scope of the cycle of operation that the oil pumper runs for the first time is 5 ± 2min, and is transported for the second time from oil pumper
Row starts, and after each run terminates, the duration of the cycle of operation optimizes study；In the step 4 and step 5, shut down
The scope in cycle is 10 ± 2min；In the step 4, the scope that shutdown is weighed is 10 ± 5kg.
Further, the computing formula of the cycle of operation Optimization Learning is：T "=T (nT)/(mT'), T in formula " is represented
Duration after this oil pumper end of run cycle of operation Optimization Learning, n represents that oil pumper this time runs the cycle run altogether
Number, T represents the duration of the cycle of operation that oil pumper this time runs, and m represents the periodicity that the last operation of oil pumper runs altogether,
T' represents the duration of the cycle of operation of the last operation of oil pumper.
Further, in the step 5, judge that oil pumper need to be while meet three below condition in light running state：
The degree of balance<85% or the degree of balance>115%, oil pumper phase current<9A, pumping unit power factor<0.3.
Further, the computing formula of the degree of balance is：The degree of balance=down stroke maximum current/upstroke maximum current *
100%, the maximum current is transient current.
Further, in the step 4 and step 5, shutdown operation is carried out using electronic band-type brake when closing oil pumper.
Further, a kind of oil-field oil pumper energy-saving control system, including PLC module, frequency converter, energy feedback unit sum
According to collecting unit, in the switch board of electric control chamber, the frequency converter leads to for the PLC module, frequency converter and energy feedback unit
The mode for crossing RS485 is connected with PLC module, and the input of the energy feedback unit is connected with frequency converter, its output end with electricity
Network source is connected, and the data acquisition unit is connected with PLC module.
Further, the data acquisition unit includes weighing sensor, load and angular displacement sensor, intelligent electric meter and list
Well metering device, the re-transmission sensor, load and angular displacement sensor and single well metering device run scene, institute located at oil pumper
Intelligent electric meter is stated in the switch board of electric control chamber, the weighing sensor is connected by Analog input mModule with PLC module,
The load and angular displacement sensor are connected by Zigbee module with PLC module, the intelligent electric meter and single well metering device
It is connected with PLC module by way of RS485.
Further, also including HMI and upper monitoring terminal, the HMI passes through in the switch board of electric control chamber
The mode of RS485 is connected with PLC module, and the upper monitoring terminal is connected by communication module with PLC module, the communication mould
Block include GRM wireless terminals, industrial grade switch and wireless router, the upper monitoring terminal include mobile terminal of mobile telephone and
PC terminals.
The beneficial effects of the invention are as follows：
(1) a kind of oil-field oil pumper energy-saving control method of the invention and control system, after Energy Saving Control pattern is selected,
Determine whether to start oil pumper by judging whether continuous liquid weight weighs more than preheating, worked a cycle of operation in oil pumper
Afterwards, judge whether whether continuous liquid weight weigh with oil pumper in light condition more than shutdown successively, if continuous liquid weight is not more than
Shutdown is weighed or oil pumper then closes oil pumper in light condition, and starts oil pumper after an outage period, is being closed
The Optimization Learning of the cycle of operation is carried out after oil pumper, on the contrary if continuous liquid weight is weighed more than shutdown and oil pumper is not at underloading shape
State, and system does not terminate operation, then work on cycle of operation of oil pumper repeat above-mentioned judgement, realize oil pumper automatic
Interval has reached the purpose of Energy Saving Control from the operation of optimizing.
(2) shutdown operation is carried out using the mode of electronic band-type brake when closing oil pumper, being accurately positioned for oil pumper is realized
Control.
(3) input of energy feedback unit is connected with frequency converter, and its output end is connected with electric network source, when under oil pumper
During row, the alternating current that oil pumper mechanical energy is produced is converted into direct current by frequency converter, and energy feedback unit then leads to direct current energy
Cross the AC energy that PSG inversion transformation techniques are converted into same frequency same-phase, so 97.5% regenerative electric energy feedback to local power net,
Used for neighbouring equipment, energy feedback unit replaces resistive braking completely, in hgher efficiency, export pure sine wave, feedback is clean all the time
Net electric energy, power saving rate is up to 20%.
(4) upper monitoring terminal and PLC module are connected by communication module, communication module includes GRM wireless terminals, industry
Level interchanger and wireless router, upper monitoring terminal include mobile terminal of mobile telephone and PC terminals, realize long distance wireless data
Transmission, remote control operation, the oil-field oil pumper for making the system can be used for unattended, wild environment, regular patrol etc. are controlled.
Brief description of the drawings
Fig. 1 is a kind of schematic diagram of oil-field oil pumper energy-saving control system；
Fig. 2 is oil pumper motor main circuit electrical schematic diagram；
Fig. 3 is that oil pumper motor controls circuit electrical schematic diagram；
Fig. 4 is that electronic band-type brake controls circuit electrical schematic diagram；
Fig. 5 is a kind of flow chart of oil-field oil pumper energy-saving control method；
Specific embodiment
In order that those skilled in the art more fully understand technical scheme, it is right with reference to accompanying drawing of the invention
Technical scheme carries out clear, complete description, and based on the embodiment in the application, those of ordinary skill in the art exist
Other the similar embodiments obtained on the premise of not making creative work, should all belong to the scope of the application protection.
Embodiment one：
As shown in figure 1, a kind of oil-field oil pumper energy-saving control system, including PLC module, frequency converter, energy feedback unit,
Data acquisition unit, HMI and upper monitoring terminal, the PLC module, frequency converter, energy feedback unit and HMI are located at electric control chamber
Switch board in, the frequency converter and HMI are connected by way of RS485 with PLC module；The data acquisition unit includes claiming
Sensor, load and angular displacement sensor, intelligent electric meter and single well metering device are retransmitted, the weighing sensor is located at oil pumper machine
Side, is connected with flowline is entered, and is connected with PLC module by Analog input mModule, for continuing liquid weight (i.e. oil well liquid output amount)
Detection；The load and angular displacement sensor are connected on the walking beam of oil pumper by Zigbee module and PLC module
Connect, for the detection of the angular displacement in sucker rod load and oil pumper stroke；The individual well strength unit is located at by oil pumper machine,
It is connected with flowline is entered, is connected with PLC module by way of RS485, for the actual continuous liquid measure of oil pumper, continuous liquid time, oil
(day, the moon, total) yield, oil-containing with liquid than etc. detection；The intelligent electric meter passes through in the switch board of electric control chamber
The mode of RS485 is connected with PLC module, for the detection of electrical parameter in oil pumper running；The upper monitoring terminal is led to
Cross communication module to be connected with PLC module, the communication module includes GRM wireless terminals, industrial grade switch and wireless router,
The upper monitoring terminal includes mobile terminal of mobile telephone and PC terminals, and input and the frequency converter of the energy feedback unit connect
Connect, its output end is connected with electric network source.
Said structure realizes the remote operation control of the remote transmission and oil pumper of oil pumper service data, makes the system
Can be used for the oil-field oil pumper control of unattended, wild environment, regular patrol etc..
As shown in Fig. 2 oil pumper motor main circuit, the oil pumper motor main circuit include intelligent electric meter,
Circuit breaker Q F1, oil pumper motor power frequency operation main circuit, oil pumper motor converting operation main circuit and energy feedback
Unit, the intelligent electric meter is connected to AC380V ends of incoming cables, and the intelligent electric meter is connected by RS485 contacts with PLC module, this
Embodiment intelligent electric meter is preferably EDA9033AC three-phase main-frequencies electricity acquisition module, and the circuit breaker Q F1 is the main open circuit of main circuit
Device, controls the break-make of whole main circuit power, and its main contact end of incoming cables is connected to after intelligent electric meter, and its main contact leading-out terminal connects
Connect oil pumper motor power frequency operation main circuit and oil pumper motor converting operation main circuit.
The oil pumper motor power frequency operation main circuit includes circuit breaker Q F2, contactor KM2 and electrothermal relay FR,
The circuit breaker Q F2 main contacts end of incoming cables is connected with circuit breaker Q F1 main contact leading-out terminals, circuit breaker Q F2 main contacts leading-out terminal with
Contactor KM2 main contacts end of incoming cables connects, and contactor KM2 main contacts leading-out terminal is by electrothermal relay FR and oil pumper motor
Power inleting terminal is connected.
The oil pumper motor converting operation main circuit include frequency converter, contactor KM1, contactor KM3, it is middle after
Electrical equipment KA1 and auxiliary reclay KA2, the contactor KM1 main contacts end of incoming cables is connected with circuit breaker Q F1 main contact leading-out terminals,
Contactor KM1 main contacts leading-out terminal is connected with frequency converter R, S, T contact, and frequency converter U, V, W contact and oil pumper motor are electric
Source end of incoming cables is connected, and the normally opened auxiliary contact of contactor KM3 is connected between the frequency converter X1 contacts and COM contacts, is used for
The startup and closing of frequency converter are controlled, the line of auxiliary reclay KA1 is connected between the frequency converter TA contacts and+24v contacts
Circle, for exporting frequency converter operation configured information, auxiliary reclay is connected between the frequency converter Y1 contacts and+24v contacts
The coil of KA2, for exporting oil pumper main circuit fault message, the frequency converter is connected by RS485 contacts with PLC module,
The present embodiment frequency converter is preferably four quadrant running frequency converter, and selects Speedless sensor quality controling mode to control oil pumping
Machine motor run, in the case of can so ensureing without oil pumper motor speed feedback, torque also can quick response, and
And can also obtain sufficiently large torque in oil pumper motor low cruise.
The end of incoming cables of the energy feedback unit is connected with the DC+ contacts and DC- contacts of frequency converter, its leading-out terminal with open circuit
The leading-out terminal connection of device QF1 main contacts, when stroke proceeds to a certain degree the situation of oil pumper drive motor occurs, then
Motor is closed, the purpose for reaching energy-conservation is slided using oil pumper, that is, adjust not speed governing all energy-conservations, now frequency converter will drive electricity
The alternating current that machine mechanical energy is produced is converted into direct current, and energy feedback unit is then changed direct current energy by PSG inversion transformation techniques
Into the AC energy of same frequency same-phase, so 97.5% regenerative electric energy feedback to local power net, used for neighbouring equipment, energy
Amount feedback unit can completely replace resistive braking, in hgher efficiency, export pure sine wave, and the cleaning electric energy of feedback all the time, power saving rate is high
Up to 20%.
As described in Figure 3, oil pumper motor control circuit, the oil pumper motor control circuit includes in parallel company
It is connected to oil pumper motor converting operation first control circuit, oil pumper motor converting operation between AC220V power lines
Second control circuit, oil pumper motor power frequency operation control circuit, converter power supply indicating circuit, converting operation indicate electricity
Road, power frequency operation indicating circuit and failure indicating circuit, the oil pumper motor control circuit also include being serially connected with
The fuse FU1 of AC220V power firestreaks one end.
The oil pumper motor converting operation first control circuit include the rotary switch SA0 that is sequentially connected in series and
The coil of contactor KM1, the present embodiment rotary switch SA0 is preferably without automatically reset rotary switch, and the oil pumper drives
Motor frequency conversion operation second control circuit includes 3,4 contacts, a PLC output points of the rotary switch SA1 being sequentially connected in series
1st, the coil of the normally closed auxiliary contact of contactor KM2 and contactor KM3,3,4 contacts of the rotary switch SA1 are also by numeral
The connection of amount input module and PLC module, the oil pumper motor power frequency operation control circuit includes being sequentially connected in series
Rotary switch SA1 1,2 contacts, normally closed button SB2, normally opened button SB1, the normally closed auxiliary contact of contactor KM3, contactor
The coil of KM2 and the normally closed auxiliary contact of electrothermal relay FR1, the normally opened button SB1 are also parallel with the normally opened auxiliary of contactor KM2
Contact, the change-over switch, the present embodiment rotary switch SA1 is helped to be preferably universal seclector.
The operation of oil pumper motor firstly the need of close circuit breaker QF1, if desired oil pumper motor power frequency operation,
Then close circuit breaker QF2, goes to change-over switch SA1 1,2 contact one end and switches it on, contactor KM2 when pressing button SB1
Coil obtains electric, and its main contact closure, oil pumper motor obtains electric, starts power frequency operation, contactor KM2 when pressing button SB2
Coil losing electricity, its main contact disconnects, and oil pumper motor stops, and the normally opened auxiliary contact of contactor KM2 is used for self-locking, connects
The normally closed auxiliary contact of tentaculum KM3 is used to interlock；If desired oil pumper motor converting operation, then close rotary switch first
The coil of SA0, contactor KM1 obtains electric, and its main contact closure, frequency converter obtains electric, change-over switch SA1 then is gone into 3,4 contacts
One end switches it on, and PLC module reads its state and controls a PLC output points 1 to close by digital quantity input module,
The coil of contactor KM3 obtains electric, its normally opened auxiliary contact closure, starts frequency converter, this be frequency converter by RS485 buses with
PLC module communicates, its U, V, W contact control oil pumper motor converting operation.
The converter power supply indicating circuit includes normally opened auxiliary contact and the instruction of the contactor KM1 being sequentially connected in series
Lamp HG, when oil pumper motor converting operation, frequency converter obtains electric, and indicator lamp HG is bright；The converting operation indicating circuit bag
The normally opened auxiliary contact and indicator lamp HR1 of the auxiliary reclay KA1 being sequentially connected in series are included, its TA contact is defeated after frequency converter starts
Go out to control the coil of auxiliary reclay KA1 to obtain electric, the normally opened auxiliary contact closure of auxiliary reclay KA1, indicator lamp HR1 is bright；Institute
Stating power frequency operation indicating circuit includes the normally opened auxiliary contact and indicator lamp HR2 of the KM2 being sequentially connected in series, when oil pumper drives
During motor power frequency operation, indicator lamp HG is bright；The failure indicating circuit includes that the auxiliary reclay KA2's being sequentially connected in series is normal
Open the normal of electrothermal relay FR1 after the normally opened auxiliary contact also parallel connection of auxiliary contact and indicator lamp HY2, the auxiliary reclay KA2
Auxiliary contact are driven, when oil pumper motor power frequency operation, during motor overheating, the normally opened auxiliary contact closure of relay FR1,
Indicator lamp HY1 is bright, when oil pumper motor converting operation, when breaking down, in the middle of frequency converter Y1 contact output controls after
The coil of electrical equipment KA2 obtains electric, and indicator lamp HY1 is bright.
As shown in figure 4, electronic band-type brake control circuit, the electronic band-type brake control circuit include being sequentially connected in series in
Band-type brake coil control circuit and band-type brake coil between AC220v power lines, band-type brake coil control circuit include parallel with one another embracing
Brake cable circle industrial frequency control circuit and band-type brake coil frequency conversion control circuit, the band-type brake coil industrial frequency control circuit are provided with contactor
The normally closed auxiliary contact of KM2, the band-type brake coil frequency conversion control circuit is provided with the normally closed auxiliary of contactor KM3 being sequentially connected in series
Contact and the 2nd PLC output points.
During oil pumper motor power frequency operation, closing oil pumper motor, contactor KM2 coil losing electricities, its is normally closed
Auxiliary contact are closed, and band-type brake coil obtains electric, start electronic band-type brake；During oil pumper motor converting operation, close oil pumper and drive
Dynamic motor, PLC module controls a PLC output points to disconnect first, contactor KM3 coil losing electricities, its normally closed auxiliary contact closure,
PLC module controls the 2nd PLC output points to close again, and band-type brake coil obtains electric, starts electronic band-type brake.
It is 2.5m that PLC module controls the condition that the 2nd PLC output points are closed<X<4.36m, the X is represented under reconnaissance relatively
Dead point displacement, computing formula it is as follows：X=a (θ-θ0), a represents walking beam on pumping units forearm length in formula, a=in the present embodiment
3m, θ represent the angle of walking beam and vertical direction, are detected by load and angular displacement sensor and obtained, θ0Swum when representing bottom dead centre
The angle of beam and vertical direction.
Shutdown operation is carried out by way of electronic band-type brake, control is accurately positioned when realizing shutdown of pumping machine.
As shown in Fig. 1~5, a kind of oil-field oil pumper energy-saving control method comprises the following steps：
Rotary switch SA0 is closed, and rotary switch SA1 is gone into 3,4 contact one end and switched it on, PLC module is by number
Word amount input module reads the state of the 3 of rotary switch SA1,4 contact one end connection, and system enters Energy Saving Control pattern；
(preheating cycle is System self-test time and warning time of fire alarming sum, preheating cycle in the present embodiment after one preheating cycle
It is 5min), PLC module reads the continuous liquid gravimetric value that weighing sensor is gathered by Analog input mModule, now, continues liquid weight
It is 20kg to be worth, and then the value and preheating are weighed, and (preheating is weighed and determined according to the actual Liquid output of oil well, is preheated in the present embodiment and claimed
Weight is 10kg) compare, to be weighed more than preheating, PLC module starts oil pumper motor by frequency converter, drives oil pumper to start
Work；
In a cycle of operation, (cycle of operation of oil pumper operation for the first time is 5 in the present embodiment, and from oil pumper second
Secondary operation starts, and after each run terminates, the duration of the cycle of operation optimizes study) after, PLC module is defeated by analog quantity
Enter the continuous liquid gravimetric value of module reading weighing sensor collection, now, it is 14kg to continue liquid gravimetric value, then claims the value with shutdown
Weight (shutdown is weighed and determined according to the actual Liquid output of oil well, is shut down in the present embodiment and is weighed as 10kg) compares, and is weighed more than shutdown；
Then PLC module by RS485 buses read the phase current of oil pumper motor, power factor that intelligent electric meter gathers, under
Stroke maximum current and upstroke maximum current, the wherein value of phase current are 10A, and the value of power factor is 0.4, and calculated equilibrium
The value of degree is that 105 (computing formula of the degree of balance is：The degree of balance=down stroke maximum current/upstroke maximum current * 100%),
Then judge whether oil pumper in light condition (judges that oil pumper need to be while expire in light running state according to above-mentioned parameter
Sufficient three below condition：The degree of balance<85% or the degree of balance>115%, oil pumper phase current<9A, pumping unit power factor<0.3),
85%<The degree of balance<115%, phase current is>9A, power factor>0.3, judge that oil pumper is not in light condition；
After oil pumper continues to run with a cycle of operation, judge whether continuous liquid weight and oil pumper motor deliver state
Meet above-mentioned condition, continue to repeat above-mentioned judgement after oil pumper if meeting above-mentioned condition continues to run with a cycle of operation, if
Then PLC module closes oil pumper motor by frequency converter to be unsatisfactory for above-mentioned condition, and mode using electronic band-type brake is carried out
Braking, then in an outage period, (shutdown to be weighed and determine that outage period is in the present embodiment according to the actual Liquid output of oil well
After 10min), PLC module reads the continuous liquid gravimetric value that weighing sensor is gathered by Analog input mModule, then by continuous liquid weight
Value is weighed with preheating and is compared, and is repeated the above steps.
Oil pumper has run 3 cycles of operation altogether for the first time in the present embodiment, has run 4 operation weeks altogether for the second time
Phase, after second end of run of oil pumper, the duration of the cycle of operation optimizes study and calculates, and computing formula is：T "=T
(nT)/(mT'), T in formula " represents the duration after this oil pumper end of run cycle of operation Optimization Learning (in the present embodiment
T " is the duration after second end of run cycle of operation Optimization Learning of oil pumper), n represents that oil pumper this time runs and runs altogether
Periodicity (n runs the periodicity for running altogether for oil pumper for the second time in the present embodiment, i.e. n for 4), T represent oil pumper this
(T is the duration of the cycle of operation that oil pumper runs for second to the duration of the cycle of operation of secondary operation in the present embodiment, i.e. T is
5min), m represent periodicity that the last operation of oil pumper runs altogether (in the present embodiment m be the last operation of oil pumper altogether
For 3), T' represents that (T' is to take out in the present embodiment for the duration of the cycle of operation of the last operation of oil pumper for the periodicity of operation, i.e. m
The duration of the cycle of operation that oil machine is run for the first time, i.e. T' is 5min), T is calculated according to above-mentioned formula and parameter " (the present embodiment
Middle T " is the duration after second end of run cycle of operation Optimization Learning of oil pumper) it is 6.7min.
If in oil pumper running, disconnecting rotary switch SA0 or rotary switch SA1 being gone into 1,2 contact one end and break
Then oil pumper directly jumps out Energy Saving Control pattern to open 3,4 contact one end, if closing oil pumper by HMI or upper monitoring terminal,
Then oil pumper jumps out Energy Saving Control pattern after the current cycle of operation has been run.
A kind of oil-field oil pumper energy-saving control method of the present embodiment, by judging whether continuous liquid weight weighs more than preheating
Determine whether to start oil pumper, after oil pumper works a cycle of operation, judge whether continuous liquid weight is more than to shut down successively and claim
Whether weight and oil pumper are in light condition, are not more than that shutdown is weighed or oil pumper is closed if the light condition if continuous liquid weight
Oil pumper, and start oil pumper after an outage period, the Optimization Learning of the cycle of operation is carried out after oil pumper is closed, otherwise
If continuous liquid weight is weighed more than shutdown and oil pumper is not at light condition, and system does not terminate operation, then oil pumper continues work
Make a cycle of operation above-mentioned judgement of repetition, realize operation of the oil pumper automatic intermittent from optimizing, reach Energy Saving Control
Purpose.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each implementation method is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Specification an as entirety, the technical scheme in each embodiment can also be formed into those skilled in the art through appropriately combined
May be appreciated other embodiment.
Claims (10)
1. a kind of oil-field oil pumper energy-saving control method, it is characterised in that comprise the following steps：
Step one：Judge whether to select Energy Saving Control pattern, if selection Energy Saving Control pattern, enters after a preheating cycle
Step 2, enters manual operation mode if non-selected Energy Saving Control pattern；
Step 2：Judge whether continuous liquid weight weighs more than preheating, step 3 is entered if continuous liquid weight is weighed more than preheating, if
Continuous liquid weight is weighed less than or equal to preheating, then the step is repeated after a preheating cycle, until continuous liquid weight claims more than preheating
Untill reentering step 3；
Step 3：Start oil pumper to start working, oil pumper enters step 4 after one cycle of operation of work；
Step 4：Judge whether continuous liquid weight weighs more than shutdown, step 5 is entered if continuous liquid weight is weighed more than shutdown, if
Continuous liquid weight is weighed less than or equal to shutdown, then close oil pumper, and the return to step two after an outage period；
Step 5：Judge that whether oil pumper, in light running state, enters step if oil pumper is not at light running state
Rapid six, if oil pumper is in light condition, close oil pumper, and the return to step two after an outage period；
Step 6：Judge whether system terminates operation, if judging to jump out energy conservation model if system finishing runs, if judging system
System does not terminate the operation then return to step four after a cycle of operation.
2. a kind of oil-field oil pumper energy-saving control method as claimed in claim 1, it is characterised in that the step one and step
In two, the scope of preheating cycle is 5 ± 2min；In the step 2, the scope that preheating is weighed is 10 ± 5kg.
3. a kind of oil-field oil pumper energy-saving control method as claimed in claim 1, it is characterised in that the oil pumper is transported for the first time
The scope of the capable cycle of operation is 5 ± 2min, and since oil pumper runs for second, after each run terminates, the cycle of operation
Duration optimize study；In the step 4 and step 5, the scope of outage period is 10 ± 2min；The step 4
In, the scope that shutdown is weighed is 10 ± 5kg.
4. a kind of oil-field oil pumper energy-saving control method as claimed in claim 3, it is characterised in that the cycle of operation optimization
The computing formula of study is：T "=T (nT)/(mT'), T in formula " represents that the optimization of this oil pumper end of run cycle of operation is learned
Duration after habit, n represents that oil pumper this time runs the periodicity for running altogether, and T represents the cycle of operation that oil pumper this time runs
Duration, m represents the periodicity that the last operation of oil pumper runs altogether, and T' represents the cycle of operation of the last operation of oil pumper
Duration.
5. a kind of oil-field oil pumper energy-saving control method as claimed in claim 1, it is characterised in that in the step 5, sentence
Disconnected oil pumper need to simultaneously meet three below condition in light running state：The degree of balance<85% or the degree of balance>115%, oil pumping
Machine phase current<9A, pumping unit power factor<0.3.
6. a kind of oil-field oil pumper energy-saving control method as claimed in claim 5, it is characterised in that the calculating of the degree of balance
Formula is：The degree of balance=down stroke maximum current/upstroke maximum current * 100%, the maximum current is transient current.
7. a kind of oil-field oil pumper energy-saving control method as claimed in claim 1, it is characterised in that the step 4 and step
In five, shutdown operation is carried out using electronic band-type brake when closing oil pumper.
8. a kind of control system of any described oil-field oil pumper energy-saving control methods of use claim 1-7, its feature exists
In, including PLC module, frequency converter, energy feedback unit and data acquisition unit, the PLC module, frequency converter and energy feedback
In the switch board of electric control chamber, the frequency converter is connected unit by way of RS485 with PLC module, the energy feedback
The input of unit is connected with frequency converter, and its output end is connected with electric network source, and the data acquisition unit connects with PLC module
Connect.
9. a kind of oil-field oil pumper energy-saving control system as claimed in claim 8, it is characterised in that the data acquisition unit
Including weighing sensor, load and angular displacement sensor, intelligent electric meter and single well metering device, the re-transmission sensor, load and
Angular displacement sensor and single well metering device run scene, switch board of the intelligent electric meter located at electric control chamber located at oil pumper
Interior, the weighing sensor is connected by Analog input mModule with PLC module, and the load and angular displacement sensor pass through
Zigbee module is connected with PLC module, and the intelligent electric meter and single well metering device are by way of RS485 and PLC module
Connection.
10. a kind of oil-field oil pumper energy-saving control system as claimed in claim 8, it is characterised in that also including HMI and upper
Monitor terminal, the HMI is connected by way of RS485 in the switch board of electric control chamber with PLC module, described upper
Monitor terminal is connected by communication module with PLC module, the communication module include GRM wireless terminals, industrial grade switch and
Wireless router, the upper monitoring terminal includes mobile terminal of mobile telephone and PC terminals.
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