CN101260858A - Large hydraulic turbines stationary guide blade synchronous regulation and control method - Google Patents
Large hydraulic turbines stationary guide blade synchronous regulation and control method Download PDFInfo
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- CN101260858A CN101260858A CNA2008100155435A CN200810015543A CN101260858A CN 101260858 A CN101260858 A CN 101260858A CN A2008100155435 A CNA2008100155435 A CN A2008100155435A CN 200810015543 A CN200810015543 A CN 200810015543A CN 101260858 A CN101260858 A CN 101260858A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses an adjustment and control method for the synchronism of guide vanes of a large-scale water turbine, comprising the following steps: the resistance value of a drive coil of a servomotor is measured and then accurately defined in a single guide vane controller; the zero position and the full scale of a single guide vane instruction of the single guide vane controller are adjusted; a guide vane in the single guide vane controller synchronously controls adjustment of the zero position and the full scale of the instruction; the zero position and the full scale of a guide vane opening displacement sensor are adjusted; the vane mechanical bias voltage is measured and adjusted; the control parameter of the single guide vane is set; the synchronous control parameter of the guide vane is set; the starting time and the closing time of the guide vane are measured and adjusted; a single guide vane displacement transmitter gives a failure alarm; a single guide vane control loop gives an alarm; and an overall guide vane control loop gives an alarm. The adjustment and control method improves the control precision of guide vanes of a hydropower generating unit; the deviation of the opening instruction and the feedback is small; the action synchronism of the guide vane is good; both the starting time and the closing time of the guide vane meet the design requirements; the maximum deviation of the switching time is better than that of the standard requirement.
Description
Technical field:
The present invention relates to a kind of adjustment and controlling method of Hydropower Unit guide vanes of water turbine, the specifically a kind of synchronism adjustment of many actuators of large-scale pumped storage power power station stator and method of control of being applicable to.
Background technique:
Along with rapid economy development, the demand of electric power also grows with each passing day, and especially thermoelectricity is invested little instant effect comparatively speaking, and the construction period is short, and therefore development is swift and violent, and nuclear power generating sets also set off an upsurge of construction in the coastal area.But such energy resource structure is also brought some consequences, the one, the electrical network peak-valley difference is increasing, peak regulation pressure increases severely, the 2nd, a most coal-fired fired power generating unit and nuclear power generating sets tape base plinth load, the load adjustment capability is poor, unit decrease in efficiency when adjusting the slow and load variations of speed, the pondage that this just need roll up flexible operation just can reach high economic benefit.The pumped storage unit has the fast and Load Regulation flexible characteristic of equipment start-stop speed, can effectively deal with the variation requirement of network load, and is simultaneously pollution-free, and therefore the irrigation of can also controlling flood is greatly developed.In the equipment of Hydropower Unit, most important weight adjustment device is a plurality of movable guide vanes, and the strict synchronism action that keeps stator had both helped forming relatively stable, balanced current, improve unit efficiency, can also reduce unit vibration, prolong unit working life, improve the overall performance index of unit.
But adjustment of stator synchronism and the controlling method of still not having at present a kind of perfect, ripe, standard, at first the debugging of Hydropower Unit is independently finished by each producer always, do not carry out specialization, standardization, systematized debugging, the result goes one's own way, and has left over many interface problems, and the 2nd, the content of debugging is imperfect, logic is not rigorous, method is improper, debug results is barely satisfactory, mainly show: each stator stroke is inconsistent, and the control characteristic of water turbine changes, and is unfavorable for load control; Guide vane opening is asynchronous, and current are unbalanced, causes that unit vibration is bigger than normal; Stator is not closed completely close, may cause the water turbine red switch and damage equipment.
Summary of the invention:
Technical problem to be solved of the present invention is at the prior art deficiency, and large hydraulic turbines stationary guide blade synchronous adjustment and controlling method are provided, and has solved the synchronism problem of stator action.
The present invention be directed to single stator control logic of present common design, provide stator is adjusted in the debug process step and method.
The technical solution adopted for the present invention to solve the technical problems is: large hydraulic turbines stationary guide blade synchronous adjustment and controlling method the steps include:
A, measure the resistance value of servomotor drive coil, and it accurately is defined in single stator controller;
The zero-bit of single stator instruction of b, single stator controller and the adjustment of full scale will guarantee that the aperture instruction of stator is identical;
The zero-bit of stator synchronization control instruction and the adjustment of full scale in c, the single stator controller in the aperture instruction of this stator that is added to after the deviation of this guide vane opening and all the guide vane opening mean values process gain computing soon, make this guide vane opening consistent with mean value;
The zero-bit of d, guide vane opening displacement transducer and the adjustment of full scale wherein comprise following four kinds of adjustment; It is respectively the adjustment of mechanical zero; The adjustment of electrical null position and full scale; Single stator is the adjustment of stator zero-bit and full scale cashier's office in a shop; The adjustment of stator zero-bit and full scale in the speed regulator control software;
The mensuration and the adjustment of e, stator mechanical bias voltage make the mechanical bias voltage of all stators should be identical;
Adjusting of f, single stator Control Parameter, the control command that the difference process gain computing of the aperture instruction of stator and feedback forms servomotor finds the optimum gain value;
Adjusting of g, stator synchronization control parameter makes controlling object follow the tracks of guide vane opening mean value rapidly;
H, stator open and close timing and adjustment, make the open and close time unanimity of all stators;
I, single stator displacement transducer malfunction alarm;
J, single stator control loop are reported to the police;
K, total stator control loop are reported to the police.
Its concrete adjustment measure of described step b is the aperture instruction 0% and 100% that stator is set respectively from speed regulator control software, adjusts the relevant parameter k that revises the guide vane opening instruction in single stator controller then
1Value is 20～50, b
1Value is 500～900, and the instruction of demonstration is conformed to actual value; Need to adjust repeatedly repeatedly in 0% and 100% two position of instruction, the aperture command signal of stator accurately is input in the control system.
Its concrete measure of described step c is that the average opening value that stator is set respectively from speed regulator control software is 0% and 100%, adjusts the relevant parameter of correction guide vane opening mean value in single stator controller then, k
2Value is 5～20, b
2Value is 600～1200, and the average opening value of demonstration is conformed to actual.
Its concrete measure of the adjustment of the mechanical zero in the described steps d switches to manual mode for the control mode with single stator controller, at the switch of the single stator of independent operation on the spot, revise the relevant parameter in single stator controller then, make the lower limit of the manual setting value of guide vane opening become-20%～20% by 0%, manual aperture by increase and decrease button settings stator is instructed to lower limit, the feedback current of detecting position displacement sensor is greater than 2mA, and the assurance stator is closed fully; Unclamp the rotating shaft of angle displacement sensor and being connected of servomotor connecting rod, the adjustment rotating shaft position makes and is fed back to 3～6mA, and it is consistent with actual rotor shaft direction that the displacement transducer feedback current increases direction, unclamp the locating stud of angle displacement sensor rotating shaft then, be fed back under the situation of 3～6mA, fixed rotating shaft is connected with the servomotor connecting rod, tighten the locating stud of angle displacement sensor rotating shaft again, the parameter of recovering at last in the stator controller makes the following of manual setting value be limited to 0%, and the mechanical zero adjustment of stator finishes like this; The result of mechanical zero adjustment is under the situation that stator is closed fully, the current signal of the displacement transducer of guide vane opening output 3～6mA, promptly corresponding stator complete shut-down position;
The adjustment concrete measure of electrical null position in the described steps d and full scale is a manual mode for the control mode that keeps single stator controller, at the switch of the single stator of independent operation on the spot; The aperture instruction of at first setting stator is 0%, the zero-bit of adjusting on the stator displacement transducer is adjusted potentiometer, the feedback signal that makes output is 3～6mA, aperture instruction by increase and decrease button settings stator is decided to be 100% then, adjust the full scale potentiometer on the stator displacement transducer, make the stroke of servomotor consistent with the rated designs aperture, Shu Chu feedback signal is 18～22mA simultaneously; After full scale is adjusted, the zero current value of displacement transducer changes thereupon, the stroke of full scale current value and servomotor also changes thereupon after the zero current value and adjust, so will adjust in the zero-bit and the full scale position repeated multiple times of stator, until the guide vane opening instruction is 0% o'clock displacement transducer output 3～6mA signal, the aperture instruction is that the actual aperture of 100% o'clock servomotor reaches the rated designs stroke, and displacement transducer output current 18～22mA;
Single stator in the described steps d cashier's office in a shop adjustment concrete measure of stator zero-bit and full scale is a manual mode for the control mode that keeps single stator controller, at the Kai Heguan of the single stator of independent operation on the spot, adjusts the relevant parameter k of single stator controller simultaneously
3Value is 10～50, b
3Value is 300～900, make the panel guide vane opening be presented at the stator complete shut-down time be 0%, when the stator standard-sized sheet, be 100%; In like manner, need adjust repeatedly repeatedly at complete shut-down and fully open position; Control mode with single stator controller returns to automatic mode at last;
The adjustment concrete measure of stator zero-bit and full scale is respectively 0% and 100% for force the aperture instruction of stator in speed regulator control software in the speed regulator control software in the described steps d, adjust the relevant parameter of revising single stator feedback in the speed regulator control software then, making the feedback of demonstration is 0% when the stator complete shut-down, is 100% when the stator standard-sized sheet; In like manner, adjust repeatedly repeatedly at complete shut-down and fully open position.
Its concrete grammar of described step e is that long-range setting guide vane opening is 0%～100% earlier, accurately measure the mechanical bias control voltage of servomotor then by the pretightening force of adjusting servomotor mechanical bias spring, guarantee that the mechanical bias voltage of all stators is basic identical.
Its concrete grammar of described step f is for carrying out step response, and long-range setting guide vane opening is instructed, and carries out the step response by a small margin of 1%-5% stroke earlier, carries out the step response significantly of 5%-20% stroke again, seeks the optimum gain value.
Its concrete measure of described step g be the deviation of guide vane opening mean value and the actual aperture of stator through the gain computing, output signal is added in the aperture instruction of this stator again, k
4Value is 10～500.
Its concrete measure of described step h is that long-range setting guide vane opening instruction is for-15%～0%, make stator be in closed condition, long-range then setting guide vane opening instruction 100%～120%, stator is opened to full stroke, the record stator opening time, long-range again setting guide vane opening instruction-15%～0%, stator is closed, write down the stator shut-in time, make the open and close time unanimity of all stators.
In the described step I when the Displacement Feedback signal of single stator greater than 100～120% or less than 0%～-20% the time, then send the displacement transducer trouble signal;
Among the described step j when the difference of the Displacement Feedback signal of single stator and all stator Displacement Feedback signal averages greater than 0～20% and when delaying time 0～40s, then send single stator control loop alarm signal;
Among the described step k when the difference of guide vane opening command signal and stator Displacement Feedback signal average greater than 0～40% and when delaying time 0～40s, then send total stator control loop alarm signal.
Large hydraulic turbines stationary guide blade synchronous adjustment of the present invention is compared with prior art with controlling method, has following beneficial effect:
Large hydraulic turbines stationary guide blade synchronous adjustment of the present invention and controlling method, the stator control accuracy of Hydropower Unit is improved, and the aperture instruction is little with the deviation of feedback, and stator action synchronism is good, the opening and closing time of stator all meets design requirement, and switching time, maximum deviation was better than standard-required.The result is the Load Regulation stability of characteristics of unit, and controlling performance is good, and equipment operation is steady, vibrates for a short time, has improved unit efficiency and overall performance index.In sum, the present invention has improved the debugging quality, improved unit efficiency, saved debug time, filled up the blank of Hydropower Unit stator specialization, standardization, systematize adjustment method, being a kind of complete, ripe adjustment theory, is the important component part of whole Hydropower Unit standardization, standardized debugging, and exchanging trial work work and operating maintenance all has very strong guidance and reference.Simultaneously, synchronism adjustment and the control to other many actuators also has certain reference value.
Description of drawings:
Accompanying drawing is the control logic schematic diagram of single stator;
Wherein: the aperture instruction is the setting value of single stator control, k
1, b
1Be respectively the gain and the biasing coefficient of aperture instruction;
The aperture average is the mean value of all guide vane openings, k
2, b
2Be respectively the gain and the biasing coefficient of aperture average;
The aperture feedback is the process variable of single stator control, k
3, b
3Be respectively the gain and the biasing coefficient of aperture feedback;
k
4It is the gain coefficient of aperture average and aperture feedback deviation;
k
5It is the gain coefficient of single stator control.
Embodiment:
Below in conjunction with drawings and Examples large hydraulic turbines stationary guide blade synchronous adjustment of the present invention and controlling method are described in further detail.
1, the synchronism adjustment of stator
1.1, measure the resistance value of servomotor drive coil, and it accurately is defined in single stator controller;
Servomotor control at present is current drive-type, and its speed of actions and driving current are proportional, so will guarantee the synchronism control of stator, just must make the action current unanimity of each servomotor.And the output order of stator controller is the voltage-type signal, obtain identical current signal, just must know the load resistance of servomotor, it is defined in the software of single stator controller then.
1.2 the zero-bit of single stator instruction and adjustment (the parameter k in the accompanying drawing of full scale
1, b
1);
Make the aperture unanimity of all stators, will guarantee that at first the aperture instruction of stator is identical.Concrete adjustment measure is the aperture instruction 0% and 100% that stator is set respectively from speed regulator control software, adjusts the relevant parameter (k in the accompanying drawing that revises the guide vane opening instruction in single stator controller then
1, b
1), k
1Value is 20～50, b
1Value is 500～900, and the instruction of demonstration is conformed to actual value.Need to adjust repeatedly repeatedly in 0% and 100% two position of instruction, the aperture command signal of stator accurately is input in the control system.
1.3, the zero-bit of stator synchronization control instruction in single stator controller and adjustment (the parameter k in the accompanying drawing of full scale
2, b
2);
For all stators of synchronization control accurately, design has the synchronization control strategy in single stator controller, the deviation that is about to this guide vane opening and all guide vane opening mean values is added to after through the gain computing in the aperture instruction of this stator, make this guide vane opening consistent with mean value, so guide vane opening mean value also is the part of guide vane opening instruction, also will accurately adjust the zero-bit and the full scale of guide vane opening mean value.Concrete measure is that the average opening value that stator is set respectively from speed regulator control software is 0% and 100%, adjusts the relevant parameter (k in the accompanying drawing of correction guide vane opening mean value in single stator controller then
2, b
2), k
2Value is 5～20, b
2Value is 600～1200, and the average opening value of demonstration is conformed to actual.Note adjusting repeatedly repeatedly.
1.4, the zero-bit of guide vane opening displacement transducer and adjustment (the parameter k in the accompanying drawing of full scale
3, b
3);
The adjustment of mechanical zero.The control mode of single stator controller is switched to manual mode, at the switch of the single stator of independent operation on the spot, revise the relevant parameter in single stator controller then, make the lower limit of the manual setting value of guide vane opening become-20%～20% by 0%, manual aperture by increase and decrease button settings stator is instructed to lower limit, the feedback current of detecting position displacement sensor is greater than 2mA, and the assurance stator is closed fully.Unclamp the rotating shaft of angle displacement sensor and being connected of servomotor connecting rod, the adjustment rotating shaft position makes and is fed back to 3～6mA, and it is consistent with actual rotor shaft direction that the displacement transducer feedback current increases direction, unclamp the locating stud of angle displacement sensor rotating shaft then, be fed back under the situation of 3～6mA, fixed rotating shaft is connected with the servomotor connecting rod, tighten the locating stud of angle displacement sensor rotating shaft again, the parameter of recovering at last in the stator controller makes the following of manual setting value be limited to 0%, and the mechanical zero adjustment of stator finishes like this.The result of mechanical zero adjustment is under the situation that stator is closed fully, the current signal of the displacement transducer of guide vane opening output 3～6mA, promptly corresponding stator complete shut-down position.
The adjustment of electrical null position and full scale.The control mode that keeps single stator controller is a manual mode, at the switch of the single stator of independent operation on the spot.The aperture instruction of at first setting stator is 0%, the zero-bit of adjusting on the stator displacement transducer is adjusted potentiometer, the feedback signal that makes output is 3～6mA, aperture instruction by increase and decrease button settings stator is decided to be 100% then, adjust the full scale potentiometer on the stator displacement transducer, make the stroke of servomotor consistent with the rated designs aperture, Shu Chu feedback signal is 18～22mA simultaneously.After full scale is adjusted, the zero current value of displacement transducer changes thereupon, the stroke of full scale current value and servomotor also changes thereupon after the zero current value and adjust, so will adjust in the zero-bit and the full scale position repeated multiple times of stator, until the guide vane opening instruction is 0% o'clock displacement transducer output 3～6mA signal, the aperture instruction is that the actual aperture of 100% o'clock servomotor reaches the rated designs stroke, and displacement transducer output current 18～22mA.
Single stator is the adjustment of stator zero-bit and full scale cashier's office in a shop.The control mode that keeps single stator controller is a manual mode, at the Kai Heguan of the single stator of independent operation on the spot, adjusts the relevant parameter (k in the accompanying drawing of single stator controller simultaneously
3, b
3), k
3Value is 10～50, b
3Value is 300～900, make the panel guide vane opening be presented at the stator complete shut-down time be 0%, when the stator standard-sized sheet, be 100%.In like manner, need adjust repeatedly repeatedly at complete shut-down and fully open position, to reach promising result.Control mode with single stator controller returns to automatic mode at last.
The adjustment of stator zero-bit and full scale in the speed regulator control software.Force the aperture instruction of stator to be respectively 0% and 100% in speed regulator control software, adjust the relevant parameter of revising single stator feedback in the speed regulator control software then, making the feedback of demonstration is 0% when the stator complete shut-down, is 100% when the stator standard-sized sheet.In like manner, adjust repeatedly repeatedly, with the measurement effect of accurate stator feedback at complete shut-down and fully open position.
1.5, the mensuration and the adjustment of stator mechanical bias voltage;
Open synchronously in order to make stator, and the speed unanimity of switch, the mechanical bias voltage of all stators should be basic identical, concrete grammar is that long-range setting guide vane opening is 0%～100% earlier, adjust the pretightening force of servomotor mechanical bias spring then, accurately measure the mechanical bias control voltage of servomotor, guarantee that the mechanical bias voltage of all stators is basic identical.
1.6, (the parameter k in the accompanying drawing that adjusts of single stator Control Parameter
5);
The control of single stator is general adopts pure ratio to regulate the (k in the accompanying drawing
5), the difference process gain computing of the aperture instruction of stator and feedback forms the control command of servomotor, and yield value greatly then overshoot is serious, and the little then static deviation of yield value is big, k
5Value is 10～500.The target of adjusting gain be controlling object follow the tracks of rapid non-overshoot and also static deviation little, the means of checking are to carry out step response, long-range setting guide vane opening instruction, carry out the step response by a small margin of 1%-5% stroke earlier, carry out the step response significantly of 5%-20% stroke again, seek the optimum gain value.
2, the synchronism of stator control
2.1, (the parameter k in the accompanying drawing that adjusts of stator synchronization control parameter
4);
The deviation of guide vane opening mean value and the actual aperture of stator is through the gain computing (k in the accompanying drawing
4), output signal is added in the aperture instruction of this stator again, and the setting method of stator synchronization control parameter is with 1.6, k
4Value is 10～500, and the target of adjustment is that controlling object is followed the tracks of guide vane opening mean value rapidly, and non-overshoot and static deviation are little in the course of action.
2.2, stator opens and closes timing and adjustment;
In order to check the result of adjustment, the open and close time of all stators is tested the synchronism of simultaneous verification stator action.Concrete grammar is that long-range setting guide vane opening instruction is for-15%～0%, make stator be in closed condition, long-range then setting guide vane opening instruction 100%～120%, stator is opened to full stroke fast, the record stator opening time, long-range again setting guide vane opening instruction-15%～0%, stator quick closedown, record stator shut-in time.Require open and close time of all stators consistent and meet design requirement, the stator that deviation is big is adjusted again, until qualified.
2.3, single stator displacement transducer malfunction alarm;
The Displacement Feedback signal of single stator then sends the displacement transducer trouble signal greater than 100～120% or less than 0%～-20%.
2.4, single stator control loop reports to the police;
The difference of the Displacement Feedback signal of single stator and all stator Displacement Feedback signal averages is then sent single stator control loop alarm signal greater than 0～20% and 0～the 40s that delays time.
2.5, total stator control loop reports to the police;
The difference of total guide vane opening command signal and stator Displacement Feedback signal average is then sent total stator control loop alarm signal greater than 0～40% and 0～the 40s that delays time.
Below in conjunction with case history, the invention process technological scheme is described further.
The load resistance of measuring certain servomotor is 130 Ω, with its explication in the software of single stator controller.The corrected parameter k of guide vane opening instruction
1Value is 25.68, b
1Value is 786.The corrected parameter of guide vane opening mean value, k
2Value is 12.72, b
2Value is 809.In the adjustment of mechanical zero, manually the lower limit of setting value changes-5% into, and the adjustment rotating shaft position makes and is fed back to 3.8～4.1mA, corresponding stator complete shut-down position.In the adjustment of electrical null position and full scale, the guide vane opening instruction is 0% o'clock displacement transducer output 3.8～4.1mA signal, and the aperture instruction is that the actual aperture of 100% o'clock servomotor reaches rated designs stroke 330mm, and displacement transducer output current 18～22mA.Parameter k is adjusted in the demonstration of guide vane opening
3Value is 25.63, b
3Value is 796, and making when the aperture of stator is presented at complete shut-down on the control panel is 0%, is 100% when standard-sized sheet.Stator synchronization control gain coefficient k
4Value is 25.The ride gain coefficient k of single stator
5Value is 270.When carrying out the test of open and close time of stator and synchronism, at first set the guide vane opening instruction for-5%, make stator be in closed condition, set guide vane opening instruction 110% then, open stator fast to full stroke, the record stator opening time, set guide vane opening instruction-5% again, the stator quick closedown, the record stator shut-in time.When the Displacement Feedback signal of stator greater than 110% or less than-10%, then send the displacement transducer trouble signal.When the difference of the Displacement Feedback signal of stator and stator displacement average greater than 3% and the 5s that delays time, then send single stator control loop alarm signal.When the difference of guide vane opening command signal and guide vane opening average greater than 10% and the 20s that delays time, then send total stator control loop alarm signal.
After adjust finishing, the deviation of the instruction of the aperture of stator and feedback is less than 0.5%, the deviation requirement far below＜2%; Stator action synchronism is good, and under identical aperture instruction, the guide vane opening maximum deviation is less than 0.5%, the deviation requirement far below＜3%; The opening and closing time of stator all meets design requirement, switching time maximum deviation 0.5s, less than the 1.0s of standard-required.The Load Regulation stability of characteristics of unit, controlling performance is good, and equipment operation is steady.
Claims (9)
1, large hydraulic turbines stationary guide blade synchronous adjustment and controlling method the steps include:
A, measure the resistance value of servomotor drive coil, and it accurately is defined in single stator controller;
The zero-bit of single stator instruction of b, single stator controller and the adjustment of full scale will guarantee that the aperture instruction of stator is identical;
The zero-bit of stator synchronization control instruction and the adjustment of full scale in c, the single stator controller in the aperture instruction of this stator that is added to after the deviation of this guide vane opening and all the guide vane opening mean values process gain computing soon, make this guide vane opening consistent with mean value;
The zero-bit of d, guide vane opening displacement transducer and the adjustment of full scale wherein comprise following four kinds of adjustment, are respectively the adjustment of mechanical zero; The adjustment of electrical null position and full scale; Single stator is the adjustment of stator zero-bit and full scale cashier's office in a shop; The adjustment of stator zero-bit and full scale in the speed regulator control software;
The mensuration and the adjustment of e, stator mechanical bias voltage make the mechanical bias voltage of all stators should be identical;
Adjusting of f, single stator Control Parameter, the control command that the difference process gain computing of the aperture instruction of stator and feedback forms servomotor finds the optimum gain value;
Adjusting of g, stator synchronization control parameter makes controlling object follow the tracks of guide vane opening mean value rapidly;
H, stator open and close timing and adjustment, make the open and close time unanimity of all stators;
I, single stator displacement transducer malfunction alarm;
J, single stator control loop are reported to the police;
K, total stator control loop are reported to the police.
2, large hydraulic turbines stationary guide blade synchronous adjustment according to claim 1 and controlling method, it is characterized in that: its concrete adjustment measure of described step b is the aperture instruction 0% and 100% that stator is set respectively from speed regulator control software, adjusts the relevant parameter k that revises the guide vane opening instruction in single stator controller then
1Value is 20～50, b
1Value is 500～900, and the instruction of demonstration is conformed to actual value; Need to adjust repeatedly repeatedly in 0% and 100% two position of instruction, the aperture command signal of stator accurately is input in the control system.
3, large hydraulic turbines stationary guide blade synchronous adjustment according to claim 1 and controlling method, it is characterized in that: its concrete measure of described step c is that the average opening value that stator is set respectively from speed regulator control software is 0% and 100%, adjust the relevant parameter of revising guide vane opening mean value in single stator controller then, k
2Value is 5～20, b
2Value is 600～1200, and the average opening value of demonstration is conformed to actual.
4, large hydraulic turbines stationary guide blade synchronous adjustment according to claim 1 and controlling method, it is characterized in that: its concrete measure of the adjustment of the mechanical zero in the described steps d switches to manual mode for the control mode with single stator controller, at the switch of the single stator of independent operation on the spot, revise the relevant parameter in single stator controller then, make the lower limit of the manual setting value of guide vane opening become-20%～20% by 0%, manual aperture by increase and decrease button settings stator is instructed to lower limit, the feedback current of detecting position displacement sensor is greater than 2mA, and the assurance stator is closed fully; Unclamp the rotating shaft of angle displacement sensor and being connected of servomotor connecting rod, the adjustment rotating shaft position makes and is fed back to 3～6mA, and it is consistent with actual rotor shaft direction that the displacement transducer feedback current increases direction, unclamp the locating stud of angle displacement sensor rotating shaft then, be fed back under the situation of 3～6mA, fixed rotating shaft is connected with the servomotor connecting rod, tighten the locating stud of angle displacement sensor rotating shaft again, the parameter of recovering at last in the stator controller makes the following of manual setting value be limited to 0%, and the mechanical zero adjustment of stator finishes like this; The result of mechanical zero adjustment is under the situation that stator is closed fully, the current signal of the displacement transducer of guide vane opening output 3～6mA, promptly corresponding stator complete shut-down position;
The adjustment concrete measure of electrical null position in the described steps d and full scale is a manual mode for the control mode that keeps single stator controller, at the switch of the single stator of independent operation on the spot; The aperture instruction of at first setting stator is 0%, the zero-bit of adjusting on the stator displacement transducer is adjusted potentiometer, the feedback signal that makes output is 3～6mA, aperture instruction by increase and decrease button settings stator is decided to be 100% then, adjust the full scale potentiometer on the stator displacement transducer, make the stroke of servomotor consistent with the rated designs aperture, Shu Chu feedback signal is 18～22mA simultaneously; After full scale is adjusted, the zero current value of displacement transducer changes thereupon, the stroke of full scale current value and servomotor also changes thereupon after the zero current value and adjust, so will adjust in the zero-bit and the full scale position repeated multiple times of stator, until the guide vane opening instruction is 0% o'clock displacement transducer output 3～6mA signal, the aperture instruction is that the actual aperture of 100% o'clock servomotor reaches the rated designs stroke, and displacement transducer output current 18～22mA;
Single stator in the described steps d cashier's office in a shop adjustment concrete measure of stator zero-bit and full scale is a manual mode for the control mode that keeps single stator controller, at the Kai Heguan of the single stator of independent operation on the spot, adjusts the relevant parameter k of single stator controller simultaneously
3Value is 10～50, b
3Value is 300～900, make the panel guide vane opening be presented at the stator complete shut-down time be 0%, when the stator standard-sized sheet, be 100%; In like manner, need adjust repeatedly repeatedly at complete shut-down and fully open position; Control mode with single stator controller returns to automatic mode at last;
The adjustment concrete measure of stator zero-bit and full scale is respectively 0% and 100% for force the aperture instruction of stator in speed regulator control software in the speed regulator control software in the described steps d, adjust the relevant parameter of revising single stator feedback in the speed regulator control software then, making the feedback of demonstration is 0% when the stator complete shut-down, is 100% when the stator standard-sized sheet; In like manner, adjust repeatedly repeatedly at complete shut-down and fully open position.
5, large hydraulic turbines stationary guide blade synchronous adjustment according to claim 1 and controlling method, it is characterized in that: its concrete grammar of described step e is that long-range setting guide vane opening is 0%～100% earlier, accurately measure the mechanical bias control voltage of servomotor then by the pretightening force of adjusting servomotor mechanical bias spring, guarantee that the mechanical bias voltage of all stators is basic identical.
6, large hydraulic turbines stationary guide blade synchronous adjustment according to claim 1 and controlling method, it is characterized in that: its concrete grammar of described step f is for carrying out step response, long-range setting guide vane opening instruction, carry out the step response by a small margin of 1%-5% stroke earlier, carry out the step response significantly of 5%-20% stroke again, seek the optimum gain value.
7, large hydraulic turbines stationary guide blade synchronous adjustment according to claim 1 and controlling method, it is characterized in that: its concrete measure of described step g is the deviation process gain computing of guide vane opening mean value and the actual aperture of stator, output signal is added in the aperture instruction of this stator again, k
4Value is 10～500.
8, large hydraulic turbines stationary guide blade synchronous adjustment according to claim 1 and controlling method, it is characterized in that: its concrete measure of described step h is that long-range setting guide vane opening instruction is for-15%～0%, make stator be in closed condition, long-range then setting guide vane opening instruction 100%～120%, stator is opened to full stroke, the record stator opening time, long-range again setting guide vane opening instruction-15%～0%, stator is closed, write down the stator shut-in time, make the open and close time unanimity of all stators.
9, large hydraulic turbines stationary guide blade synchronous adjustment according to claim 1 and controlling method, it is characterized in that: in the described step I when the Displacement Feedback signal of single stator greater than 100～120% or less than 0%～-20% the time, then send the displacement transducer trouble signal; Among the described step j when the difference of the Displacement Feedback signal of single stator and all stator Displacement Feedback signal averages greater than 0～20% and when delaying time 0～40s, then send single stator control loop alarm signal; Among the described step k when the difference of guide vane opening command signal and stator Displacement Feedback signal average greater than 0～40% and when delaying time 0～40s, then send total stator control loop alarm signal.
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