CN104018894A - Checking processing method of steam turbine electric hydraulic control system pulse impact - Google Patents
Checking processing method of steam turbine electric hydraulic control system pulse impact Download PDFInfo
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Abstract
A checking processing method of steam turbine electric hydraulic control system pulse impact comprises the steps that a pulse impact detecting instruction is received, the power of a steam turbine unit is lowered, and adjusting steam valves in all adjusting valve groups are turned down until pulse impact disappears; after a main steam valve and an adjusting steam valve in one adjusting steam valve group are closed, the main steam valve in the adjusting valve group is kept being closed, and the adjusting steam valve in the adjusting valve group is opened again, so that the opening degree of the adjusting steam valve is increased gradually until pulse impact reappears on the adjusting steam valve of the adjusting valve group; and a pulse impact removing instruction is received, and the dead-time compensation parameter of a proportional valve magnifier of the adjusting steam valve which generates pulse impact of the adjusting valve group is adjusted until pulse impact disappears. The checking processing method is simple, practical, high in accuracy, low in cost and capable of completely removing a fault source, cost is saved, the safety and the reliability of the unit can be effectively improved.
Description
Technical field
The present invention relates to plant maintenance field, particularly the check processing method of steam turbine for nuclear power station electrohydraulic control system pulsatile impact.
Background technique
In electrohydraulic steam turbine controlling system; when adoption rate valve carrys out the oil engine valve position of regulating and controlling steam valve; often can in the fuel supply line of servo valve, be attended by strong pulsatile impact; electrohydraulic steam turbine controlling system moves under this state, and the fuel lead or the connector position that cause Proportional valve are leaked.In the prior art, conventionally all adopt and more renew spare part, or improve the passive measure of fuel lead voltage withstand class, long-time running meeting is leaked again, and unit is forced to load down or shuts down and process, and cost is high, safety reliability is poor, can not tackle the problem at its root.In addition, while running at the scene this type of fault now, there is no good test mode, basic employing according to operator's experience and experience that such fault occurred in the past carried out failure judgement point, judges inaccurately, and wastes time and energy.
Summary of the invention
The invention provides a kind of method of On line inspection processing, adopt the On line inspection localization of faults, adjust in time and the means such as maintenance, solve in prior art and check and judge technical problem inaccurate and that processing cost is high.
The present invention is that the check processing method that solves the problems of the technologies described above this electrohydraulic steam turbine controlling system pulsatile impact designing comprises the following steps:
A. receive and detect pulsatile impact instruction, reduce steam-turbine unit power, turn down the servo valve in all modulating valve groups, until pulsatile impact disappears;
B. after closing the main stop valve and servo valve in a modulating valve group wherein, keep the main stop valve in described modulating valve group to close, and reopen the servo valve in described modulating valve group, the aperture of described servo valve is increased gradually, until pulsatile impact reappears on the servo valve of described modulating valve group;
C. receive and eliminate pulsatile impact instruction, adjust the dead area compensation parameter of the proportional valve amplifier of the servo valve of the described modulating valve group that pulsatile impact occurs, until pulsatile impact disappears.
Preferably, described step B comprises: when the aperture of the servo valve in described modulating valve group increases to when identical with the servo valve aperture of other modulating valve groups, pulsatile impact occurs on described servo valve.
Preferably, described step B comprises: when the aperture of the servo valve in described modulating valve group increases to while there is not pulsatile impact yet in the situation identical with the servo valve aperture of other modulating valve groups, continue by the aperture of servo valve described in raising steam turbine set the increase of output power, until pulsatile impact occurs on described servo valve.
Preferably, described step B comprises: when the aperture of the servo valve in described modulating valve group increases to while there is not pulsatile impact yet in the situation identical with the servo valve aperture of other modulating valve group groups, continue by the aperture of servo valve described in raising steam turbine set the increase of output power, until increase to while there is not pulsatile impact yet in the situation of maximum opening of described servo valve on described servo valve, after the main stop valve of described modulating valve group being reopened, be back to described steps A.
Preferably, after described step C, comprise: input imperative instruction, make the described servo valve that pulsatile impact occurs carry out fast trip test and step response test, and record adjusts fast trip test after dead area compensation parameter and the data of step response test, and whether the adjustment that judges dead area compensation parameter in described step C according to it meets the requirements.
Preferably, whether the described adjustment that judges dead area compensation parameter in described step C meets the requirements and comprises: in described step response test, under 5% step instruction, the oil engine valve position of described servo valve is without obvious overshoot, and in described step C, the adjustment of dead area compensation parameter meets the requirements.
Preferably, whether the described adjustment that judges dead area compensation parameter in described step C meets the requirements and comprises: in described fast trip test, described servo valve is closed being less than or equal in 0.2 second, and in described step C, the adjustment of dead area compensation parameter meets the requirements.
Preferably, the dead area compensation parameter of the proportional valve amplifier of the described servo valve of the generation of adjustment described in described step C pulsatile impact is specially:
After described step B, before described step C, comprise: the proportional valve amplifier of servo valve of measuring the described modulating valve group that pulsatile impact occurs default dead area compensation parameter in system;
The dead area compensation parameter of adjusting the proportional valve amplifier of the servo valve of the described modulating valve group that pulsatile impact occurs described in described step C is specially: certainly default dead area compensation parameter, adjust from high to low gradually dead area compensation parameter, until the pulsatile impact of described servo valve disappears.
Preferably, the dead area compensation parameter of adjusting the proportional valve amplifier of the servo valve of the described modulating valve group that pulsatile impact occurs described in described step C is specially: adjust gradually from low to high dead area compensation parameter, until described servo valve is while occurring pulsatile impact, then adjust back a predefined value by this position.
Preferably, after described step C, also comprise: the main stop valve of opening the described modulating valve group of eliminating pulsatile impact.
There is the dead area compensation parameter of the proportional valve amplifier of the servo valve of pulsatile impact by adjustment in the check processing method of electrohydraulic steam turbine controlling system pulsatile impact of the present invention, and then the pulsatile impact producing in the Proportional valve oil circuit of elimination servo valve, the check processing method simple practical of electrohydraulic steam turbine controlling system pulsatile impact of the present invention, accuracy rate is high, cost is low, can eliminate the source of trouble completely, cost-saving, effectively improve the safety reliability of unit.
Brief description of the drawings
Fig. 1 is an embodiment's of electrohydraulic steam turbine controlling system one modulating valve group of the present invention structural representation;
Fig. 2 is check processing method one embodiment's of electrohydraulic steam turbine controlling system pulsatile impact of the present invention schematic flow sheet.
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Embodiment
Describe specific embodiments of the invention in detail below in conjunction with accompanying drawing.
As shown in Figure 1, Fig. 1 is an embodiment's of electrohydraulic steam turbine controlling system one modulating valve group of the present invention structural representation; In the present invention, electrohydraulic steam turbine controlling system comprises many group modulating valve groups (being preferably four groups), wherein each modulating valve group comprises a main stop valve 10 and a servo valve 20, and the aperture of each servo valve 20 regulates by oil engine valve position, simultaneously, the oil circuit of the aperture passing ratio valve 30 of oil engine valve position is controlled, and the instruction that each Proportional valve 30 receives will be amplified via an amplifier 40.At present, what electrohydraulic steam turbine controlling system generation pulsatile impact adopted conventionally is all to go for problem in the control system of Proportional valve 30 oil circuits, deals with problems and also substantially concentrates in the control system of Proportional valve 30 oil circuits.But electrohydraulic steam turbine controlling system generation pulsatile impact is a system problem, it is not only the problem of oil circuit control, find according to investigation, its basic reason is the problem of automatically controlled part, and the present invention starts with from adjusting dead area compensation parameter aspect, solves long-standing the problems referred to above.
As shown in Figure 2, Fig. 2 is check processing method one embodiment's of electrohydraulic steam turbine controlling system pulsatile impact of the present invention schematic flow sheet.The check processing method of the present embodiment electrohydraulic steam turbine controlling system pulsatile impact comprises the following steps:
S100. receive and detect pulsatile impact instruction, reduce steam-turbine unit power, turn down the servo valve 20 in all modulating valve groups, until pulsatile impact disappears; The action now only servo valve 20 in all modulating valve groups being turned down, and main stop valve 10 in all modulating valve groups keeps reset condition, does not affect its work;
S200. after closing the main stop valve 10 and servo valve 20 in a modulating valve group wherein, keep the main stop valve 10 in described modulating valve group to close, and reopen the servo valve 20 in described modulating valve group, the aperture of described servo valve 20 is increased gradually, until pulsatile impact reappears on the servo valve 20 of described modulating valve group;
S300. receive and eliminate pulsatile impact instruction, adjust the dead area compensation parameter of the amplifier 40 of the Proportional valve 30 of the servo valve 20 of the described modulating valve group that pulsatile impact occurs, until pulsatile impact disappears.Above dead area compensation parameter refers to: in the present invention, Proportional valve 30 is electro-hydraulic proportional valve, there is larger dead band, in dead band, no matter (described in the present embodiment, control signal refers to operation voltage to the control signal of input, also for driving after the oil circuit action of Proportional valve 30, make it produce the voltage of the driving force that drives the folding of oil engine valve position) be how many, the logical oily flow of this Proportional valve 30 is 0.Therefore,, in the time that dead band is excessive, easily produce control lag; And dead area compensation parameter can make in the time that the control signal of input changes in small size scope, add a control signal value that is equal to dead area compensation parameter, thereby export a large control signal to Proportional valve 30, overcome dead band, by above-mentioned, in the present invention, the compensation of dead area compensation parameter is embodied on operation voltage.
The pulsatile impact of electrohydraulic steam turbine controlling system usually occurs in the oil circuit of Proportional valve 30, and the response valve position during normally due to the folding of oil engine valve position is excessive, and moment when Proportional valve 30 oil circuit oil extractions and oil-feed switch continuous running frequent and that switch and cause; Therefore,, when occurring when pulsatile impact, after first will determining that pulsatile impact occurs in the oil circuit of Proportional valve 30 of which servo valve 20 correspondences, then it is processed, and the concrete deterministic process of its occurrence positions is as follows:
First assign and detect pulsatile impact instruction, after electrohydraulic steam turbine controlling system receives and detects pulsatile impact instruction, reduce steam-turbine unit power, because electrohydraulic steam turbine controlling system comprises many group modulating valve groups, and in the time that steam-turbine unit power reduces, all corresponding diminishing thereupon of the steam flow passing through in main stop valve 10 in all modulating valve groups and servo valve 20, and now because steam-turbine unit power is under the automatic state of controlling of electrohydraulic steam turbine controlling system, main stop valve 10 in all modulating valve groups and the aperture of servo valve 20 also can reduce along with the reduction of power is corresponding, also corresponding the reducing along with the minimizing of steam flow of response valve position during simultaneously due to the folding of oil engine valve position, therefore in the time that steam-turbine unit power is reduced to certain numerical value, pulsatile impact can disappear thereupon, in one embodiment, when steam-turbine unit power is down to 1036MW by electrohydraulic steam turbine controlling system, pulsatile impact disappears.
After pulsatile impact disappears, one group of modulating valve group using its servo valve 20 as detected object in selected electrohydraulic steam turbine controlling system, first by after the main stop valve of this modulating valve group 10 and servo valve 20, keep the main stop valve 10 in this modulating valve group to close, and reopen the servo valve 20 in described modulating valve group, because all servo valves 20 in electrohydraulic steam turbine controlling system all receive same instruction and keep same aperture, therefore, when other modulating valve groups maintain lower time of steam-turbine unit power of above-mentioned reduction, the aperture that reopens the servo valve 20 in described modulating valve group also can increase under automatic control state thereupon gradually, due to the steam in each the modulating valve group in electrohydraulic steam turbine controlling system be all first enter main stop valve 10 after, enter again in servo valve 20 and regulate, therefore in said process, the action of closing the main stop valve 10 in this modulating valve group is in order to make this modulating valve group can not affect the normal operation of whole electrohydraulic steam turbine controlling system in follow-up adjustment process, and above-mentioned action of once more opening after the servo valve 20 in this modulating valve group is closed is the embodiment of embodiment shown in Fig. 2, but in the present invention, be not limited to upper type, for example, also can be after the main stop valve 10 of only closing in this modulating valve group, first servo valve 20 in this modulating valve group is turned down, make again its aperture under automatic control state increase gradually, omit the action that this servo valve 20 is closed.By above-mentioned, because the aperture of the servo valve 20 of selected modulating valve group increases gradually under automatic control state, therefore response valve position when its oil engine valve position folding also increases thereupon, if pulsatile impact reappears on the servo valve 20 of described modulating valve group, represent that this modulating valve group is one group that occurs in the modulating valve group of pulsatile impact, can carry out follow-up set-up procedure in this modulating valve group.
When determining that according to above step pulsatile impact occurs in one group or while organizing on the servo valve 20 of modulating valve group more, need to be to eliminating its pulsatile impact phenomenon, in order to avoid the operation of electrohydraulic steam turbine controlling system is exerted an influence, such as the oil circuit that makes Proportional valve 30 leaks; Therefore, first assign and eliminate pulsatile impact instruction, and electrohydraulic steam turbine controlling system receives after the instruction of elimination pulsatile impact, adjust the dead area compensation parameter of Proportional valve 30 amplifiers 40 of the servo valve 20 of the described modulating valve group that pulsatile impact occurs, and then the operation voltage of resize ratio valve 30, until pulsatile impact completes adjustment process after disappearing.As preferably, after described step S300, also comprise: the main stop valve 10 of opening the described modulating valve group of eliminating pulsatile impact.Also, when completing after the adjustment of this modulating valve group, need by this modulating valve group resumption of service, therefore need again the main stop valve of this modulating valve group 10 to be opened, make steam again by and start working.
In the present invention, electrohydraulic steam turbine controlling system generation pulsatile impact not necessarily just occurs in one group of modulating valve group, also may organize modulating valve group more similar fault all occurs, therefore the each step of the present invention can be carried out repeatedly, after checking that one by one which group modulating valve group definite pulsatile impact occurs in, adjust respectively, eliminate pulsatile impact.
Further, in one embodiment, the dead area compensation parameter of adjusting Proportional valve 30 amplifiers 40 of the servo valve 20 of the described modulating valve group that pulsatile impact occurs described in described step S300 is specially: from zero, adjust gradually from low to high dead area compensation parameter, until while there is pulsatile impact in described servo valve 20, adjust back a predefined value by this position again, the predefined value of the dead area compensation parameter of this readjustment is preferably: compensate the operation voltage of described servo valve 20 to increasing 0.1-0.2 volt, also be, due to reducing of dead area compensation parameter, for the also corresponding minimizing of compensation of operation voltage, need to export Proportional valve oil circuit to also can lie prostrate by corresponding increase 0.1-0.2 its operation voltage that produces the unlatching of driving oil engine valve position.Also, in the present embodiment, for ascending adjustment of adjustment of dead area compensation parameter.In above adjustment process, the operation voltage and the dead area compensation parameter sum that only need described Proportional valve 30 can reach the aperture that makes oil engine valve position reach expection, therefore after overcoming dead band, in the time increasing dead area compensation parameter, the operation voltage of described Proportional valve 30 reduces thereupon; And increase in the process of dead area compensation parameter, the sensitivity of Proportional valve 30 increases, Proportional valve no longer has excessive valve position response actually, and therefore pulsatile impact can disappear thereupon, and adjustment process completes thereupon; But, in the situation that dead area compensation parameter is too small, although can not produce pulsatile impact, but the reaction time of Proportional valve 30 is long, cause the hysteresis of instruction, therefore dead area compensation parameter can not be too small, need to adjust dead area compensation parameter to suitable position.As preferably, in above-mentioned adjustment process, to be adjusted to compared with dead area compensation parameter be while reducing approximately 0.35 volt at 1 o'clock (also after dead area compensation parameter adjustment to the operation voltage of described servo valve 20 the most at last, while having compensated approximately 0.35 volt of operation voltage), the pulsatile impact of described servo valve 20 disappears for best.Also, in the present embodiment, the preferred value of dead area compensation parameter is that dead area compensation parametric compensation operation voltage makes it reduce 0.35 volt.
Further, in another embodiment, after described step S200, before described step S300, comprise: Proportional valve 30 amplifiers 40 of servo valve 20 of measuring the described modulating valve group that pulsatile impact occurs default dead area compensation parameter in system; Before adjusting dead area compensation parameter, in system, there is default dead band parameter value, measure for this default dead area compensation parameter, can before adjusting dead area compensation parameter, carry out reference, after adjusting, contrast, further determine the reason of pulsatile impact and determine that whether the system after elimination pulsatile impact is normal.The dead area compensation parameter of adjusting Proportional valve 30 amplifiers 40 of the servo valve 20 of the described modulating valve group that pulsatile impact occurs described in described step S300 is specially: certainly default dead area compensation parameter, adjust from high to low gradually dead area compensation parameter, until the pulsatile impact of described servo valve 20 disappears.Also, be that owing to producing the basic reason of pulsatile impact the excessive caused reaction of dead area compensation parameter is too sensitive, reaction velocity is too fast, the valve position of Proportional valve 30 response excessive (also can produce in the case overshoot); Therefore, certainly default dead area compensation parameter starts to reduce gradually dead area compensation parameter, can overcome the above problems, and eliminates pulsatile impact.But in the situation that dead area compensation parameter is too small, although can not produce pulsatile impact, the reaction time of Proportional valve 30 is long, causes the hysteresis of instruction, therefore need to adjust dead area compensation parameter to suitable position.
Further, the step S100 shown in Fig. 2 comprises following three kinds of situations:
First, elected having made to order increases to other modulating valve group servo valves 20 apertures when identical for the aperture of the servo valve 20 in the described modulating valve group of detected object, pulsatile impact occurs on described servo valve 20, also be, in the time that described servo valve 20 aperture under automatic control state is increased to servo valve 20 aperture that is less than or equal to other modulating valve groups gradually, pulsatile impact just described as the servo valve 20 of detected object on occur, now, the servo valve 20 of determining this modulating valve group is for producing one of reason of pulsatile impact.
Second, when the aperture of the servo valve 20 in described modulating valve group increases to while there is not pulsatile impact yet in the situation identical with servo valve 20 apertures of other modulating valve groups, response valve position while representing the folding of oil engine valve position may not yet reach the response valve position size while producing pulsatile impact, now can continue by the aperture of servo valve 20 described in raising steam turbine set the increase of output power, until pulsatile impact occurs on described servo valve 20.
The 3rd, when the aperture of the servo valve 20 in described modulating valve group increases to while there is not pulsatile impact yet in the situation identical with servo valve 20 apertures of other modulating valve groups, continue by the aperture of servo valve 20 described in raising steam turbine set the increase of output power, until increase in the situation of maximum opening of described servo valve 20, there is not pulsatile impact yet on described servo valve 20 time, represent that this group modulating valve group is not the modulating valve group that produces pulsatile impact, now need another group modulating valve group to detect, so after the main stop valve of described modulating valve group 10 is reopened, be back to described step S100, re-start detection and the processing of a new round.The maximum opening of described servo valve 20 refers to: in the situation that all modulating valve groups run well, described servo valve 20 in the situation that of steam-turbine unit full power, the now present maximum opening of servo valve 20.
Further, after the S300 of step shown in Fig. 2, comprise: input imperative instruction, make the described servo valve 20 that pulsatile impact occurs carry out fast trip test and step response test, and record adjusts fast trip test after dead area compensation parameter and the data of step response test, and whether the adjustment that judges dead area compensation parameter in described step S300 according to it meets the requirements.Above-mentioned fast trip test and step response test are in order to check the adjustment of dead area compensation parameter whether to meet the demand of system.
In the present invention, as preferably, in described determining step S300, in the adjustment of dead area compensation parameter, whether step response test meets the requirements and comprises: in described step response test, under 5% step instruction, the oil engine valve position of described servo valve 20 is without obvious overshoot, and in described step S300, the adjustment of dead area compensation parameter meets the requirements.Such as, be 40% if the aperture of oil engine valve position is current, the aperture of ordering to adjust oil engine valve position for ± 5% time, also represents that current what assign is 5% step instruction, in this adjustment process, the oil engine valve position of described servo valve 20 satisfies the demands without obvious overshoot; Certainly, in the present invention, it is 5% that described step instruction is not limited to, also can be other numerical value, such as 6% etc., when setting after the value of a step instruction, the numerical value that is less than described step instruction all obviously satisfies the demands, therefore,, in the described step response test of the present embodiment, the preferable range of this step instruction is actual is 0-5%.
Simultaneously, in the present invention, as preferably, whether the described adjustment that judges dead area compensation parameter in described step S300 meets the requirements and comprises: in described fast trip test, described servo valve 20 is closed being less than or equal in 0.2 second, also the oil engine valve position that is described servo valve 20 is closed being less than or equal in 0.2 second, and in described step S300, the adjustment of dead area compensation parameter meets the requirements.Certainly, in the present invention, the above restriction for quick closing's time also can regulate as required.
As preferably, after described step S200, before described step S300, can also comprise: input imperative instruction, make the described servo valve 20 that pulsatile impact occurs carry out fast trip test and step response test, and record the primary data of fast trip test and step response test.Before adjusting dead area compensation parameter, carry out fast trip test and step response test, can, for the test parameters of record after adjustment dead area compensation parameter contrast, further determine the reason of pulsatile impact and determine that whether the system after elimination pulsatile impact is normal.
There is the dead area compensation parameter of the proportional valve amplifier of the servo valve 20 of pulsatile impact in the check processing method of electrohydraulic steam turbine controlling system pulsatile impact of the present invention, and then the pulsatile impact producing in the oil circuit of the Proportional valve 30 of elimination servo valve 20 by adjustment.With respect to judgement by rule of thumb in prior art, obviously its accuracy rate is lower, and higher for attendant's technical skills requirement, must have rich experience and just can accomplish.The present invention utilizes that equipment is operating to be judged, not only saves time, and accuracy rate is also very high, and, there is no so high requirement for attendant yet, as long as undertaken by step of the present invention, can accurately check the source of being out of order.And the present invention is simple and practical, accuracy rate is high, cost is low, can eliminate the source of trouble completely, cost-saving, effectively improve the safety reliability of unit.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. a check processing method for electrohydraulic steam turbine controlling system pulsatile impact, is characterized in that, this check processing method comprises the following steps:
A. receive and detect pulsatile impact instruction, reduce steam-turbine unit power, turn down the servo valve in all modulating valve groups, until pulsatile impact disappears;
B. after closing the main stop valve and servo valve in a modulating valve group wherein, keep the main stop valve in described modulating valve group to close, and reopen the servo valve in described modulating valve group, the aperture of described servo valve is increased gradually, until pulsatile impact reappears on the servo valve of described modulating valve group;
C. receive and eliminate pulsatile impact instruction, adjust the dead area compensation parameter of the proportional valve amplifier of the servo valve of the described modulating valve group that pulsatile impact occurs, until pulsatile impact disappears.
2. according to the check processing method of electrohydraulic steam turbine controlling system pulsatile impact described in claim 1, it is characterized in that, described step B comprises: when the aperture of the servo valve in described modulating valve group increases to when identical with the servo valve aperture of other modulating valve groups, pulsatile impact occurs on described servo valve.
3. the check processing method of electrohydraulic steam turbine controlling system pulsatile impact according to claim 1, it is characterized in that, described step B comprises: when the aperture of the servo valve in described modulating valve group increases to while there is not pulsatile impact yet in the situation identical with the servo valve aperture of other modulating valve groups, continue by the aperture of servo valve described in raising steam turbine set the increase of output power, until pulsatile impact occurs on described servo valve.
4. according to the check processing method of electrohydraulic steam turbine controlling system pulsatile impact described in claim 1, it is characterized in that, described step B comprises: when the aperture of the servo valve in described modulating valve group increases to while there is not pulsatile impact yet in the situation identical with the servo valve aperture of other modulating valve group groups, continue by the aperture of servo valve described in raising steam turbine set the increase of output power, until increase to while there is not pulsatile impact yet in the situation of maximum opening of described servo valve on described servo valve, after the main stop valve of described modulating valve group being reopened, be back to described steps A.
5. the check processing method of electrohydraulic steam turbine controlling system pulsatile impact according to claim 4, it is characterized in that, after described step C, comprise: input imperative instruction, make the described servo valve that pulsatile impact occurs carry out fast trip test and step response test, and record adjusts fast trip test after dead area compensation parameter and the data of step response test, and whether the adjustment that judges dead area compensation parameter in described step C according to it meets the requirements.
6. the check processing method of electrohydraulic steam turbine controlling system pulsatile impact according to claim 5, it is characterized in that, whether the described adjustment that judges dead area compensation parameter in described step C meets the requirements and comprises: in described step response test, under 5% step instruction, the oil engine valve position of described servo valve is without obvious overshoot, and in described step C, the adjustment of dead area compensation parameter meets the requirements.
7. the check processing method of electrohydraulic steam turbine controlling system pulsatile impact according to claim 5, it is characterized in that, whether the described adjustment that judges dead area compensation parameter in described step C meets the requirements and comprises: in described fast trip test, described servo valve is closed being less than or equal in 0.2 second, and in described step C, the adjustment of dead area compensation parameter meets the requirements.
8. according to the check processing method of electrohydraulic steam turbine controlling system pulsatile impact described in any one in claim 1 to 7, it is characterized in that, after described step B, before described step C, comprise: the proportional valve amplifier of servo valve of measuring the described modulating valve group that pulsatile impact occurs default dead area compensation parameter in system;
The dead area compensation parameter of adjusting the proportional valve amplifier of the servo valve of the described modulating valve group that pulsatile impact occurs described in described step C is specially: certainly default dead area compensation parameter, adjust from high to low gradually dead area compensation parameter, until the pulsatile impact of described servo valve disappears.
9. the check processing method of electrohydraulic steam turbine controlling system pulsatile impact according to claim 8, it is characterized in that, the dead area compensation parameter of adjusting the proportional valve amplifier of the servo valve of the described modulating valve group that pulsatile impact occurs described in described step C is specially: adjust gradually from low to high dead area compensation parameter, until described servo valve is while occurring pulsatile impact, then adjust back a predefined value by this position.
10. the check processing method of electrohydraulic steam turbine controlling system pulsatile impact according to claim 1, is characterized in that, also comprises: the main stop valve of opening the described modulating valve group of eliminating pulsatile impact after described step C.
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| CN106555620A (en) * | 2015-09-30 | 2017-04-05 | 大亚湾核电运营管理有限责任公司 | A kind of Steam Turhine Adjustment control valve device and method |
| CN110307985A (en) * | 2019-06-17 | 2019-10-08 | 中广核核电运营有限公司 | Nuclear steam turbine high pressure steam valve tests time out fault diagnostic method and device |
| CN114087413A (en) * | 2021-11-26 | 2022-02-25 | 中广核工程有限公司 | Proportional valve regulating method, device, equipment and medium |
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| JPS6232393A (en) * | 1985-08-05 | 1987-02-12 | 株式会社日立製作所 | Turbine controller for nuclear reactor plant |
| CN1519480A (en) * | 2003-01-09 | 2004-08-11 | ��ʽ���綫֥ | Servo valve controller with abnormal detection sunction and servo valve control system |
| CN2635922Y (en) * | 2003-07-09 | 2004-08-25 | 上海汽轮机有限公司 | Low pressure turbine oil digital electricity-liquid controller for steam turbine |
| CN101725376A (en) * | 2009-10-22 | 2010-06-09 | 南京科远自动化集团股份有限公司 | Single-channel servo control module |
| CN102116181A (en) * | 2011-01-13 | 2011-07-06 | 山东电力研究院 | Method for opening main failure valve of steam turbine with load |
| CN102536343A (en) * | 2012-02-15 | 2012-07-04 | 中国华电工程(集团)有限公司 | System and method for stabilizing frequency and voltage of system during large load phase step of isolated power grid system |
| CN103423239A (en) * | 2013-08-13 | 2013-12-04 | 国家电网公司 | Measuring device and method for dead areas of electro-hydraulic servo system with self-adapting flutter |
| CN103743560A (en) * | 2014-01-14 | 2014-04-23 | 国家电网公司 | Turbine DEH system high-pressure regulating valve flow characteristic testing and setting method |
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| CN110307985A (en) * | 2019-06-17 | 2019-10-08 | 中广核核电运营有限公司 | Nuclear steam turbine high pressure steam valve tests time out fault diagnostic method and device |
| CN114087413A (en) * | 2021-11-26 | 2022-02-25 | 中广核工程有限公司 | Proportional valve regulating method, device, equipment and medium |
| CN114087413B (en) * | 2021-11-26 | 2023-12-22 | 中广核工程有限公司 | Proportional valve adjusting method, device, equipment and medium |
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