CN109578191A - Governor master connects, leads and matches and the hydraulic system for tracking intelligent fault diagnosis processing method of proportioning valve - Google Patents
Governor master connects, leads and matches and the hydraulic system for tracking intelligent fault diagnosis processing method of proportioning valve Download PDFInfo
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- CN109578191A CN109578191A CN201910024087.9A CN201910024087A CN109578191A CN 109578191 A CN109578191 A CN 109578191A CN 201910024087 A CN201910024087 A CN 201910024087A CN 109578191 A CN109578191 A CN 109578191A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/008—Measuring or testing arrangements
-
- 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
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
Governor master connects, leads and matches and the hydraulic system for tracking intelligent fault diagnosis processing method of proportioning valve, comprising: governor electric-control system, K1*、K12*Assign initial value.Acquisition guide vane opening is fed back to Y in real time, and the guide vane opening of governor electric control system PID module output is given as YIt is given, the master of governor Hydrawlic Slave System guide vane opening control module output is with the given M in positionIt is given, main to match position feedback M, the main proportional valve position with control module output is given as BIt is given, proportional valve position is fed back to the data such as B.Judge ︱ BIt is givenWhether-B ︱ is greater than threshold value b, if ︱ BIt is given- B ︱ > b retention time is greater than t1, and proportioning valve is hydraulic follows failure for report, into troubleshooting.If having standby host and fault-free, standby host is cut；If standby host is faulty or without standby host, it is manual to cut machine, if artificial involution failure and being switched to non-machine manual mode.The method of the present invention can quick and precisely diagnose it is main connect, lead match, the hydraulic system for tracking failure of proportioning valve, avoid fault spread from causing unit load can not normal regulating a series of problems, such as even load fluctuates widely.
Description
Technical field
The invention belongs to power station automation fields, and in particular to a kind of governor master connects, leads and matches and proportioning valve is hydraulic
System for tracking intelligent fault diagnosis processing method.
Background technique
Turbine-generator units are incorporated into the power networks in normal regulating load process, if proportioning valve, main control valve, servomotor etc. execute
The failures such as oil leak pressure release occur for element failure intermittence bite tripping or control oil circuit, carry out at fault diagnosis not in time
Reason, will lead to unit load can not normal regulating or even unit load a series of problems, such as fluctuating widely, seriously affect
Unit safety stable operation, cause the accident shutdown.The hydraulic system for tracking fault diagnosis technology of turbine-generator units falls behind at present, sentences
According to improper, it is easy to appear the erroneous judgement of hydraulic system for tracking failure and fails to judge.
Summary of the invention
The present invention provides a kind of governor master and connects, leads and match and proportioning valve hydraulic system for tracking intelligent fault diagnosis processing side
Method, can quick and precisely diagnose it is main connect, lead match, the hydraulic system for tracking failure of proportioning valve, he improves the accuracy and in real time of fault diagnosis
Property, avoid fault spread from causing unit load can not normal regulating even load a series of problems, such as fluctuating widely.
The technical scheme adopted by the invention is as follows:
Governor master connects, leads and matches and the hydraulic system for tracking intelligent fault diagnosis processing method of proportioning valve, comprising the following steps:
1.: governor electric-control system, K1*、K12*Assign initial value.
2.: governor electric-control system acquires guide vane opening in real time and is fed back to Y, and governor electric control system PID module is defeated
Guide vane opening out is given as YIt is given, the master of governor Hydrawlic Slave System guide vane opening control module output is given with position
MIt is given, main to match position feedback M, the main proportional valve position with control module output is given as BIt is given, it is several that proportional valve position is fed back to B etc.
According to.
3.: judge ︱ BIt is givenWhether-B ︱ is greater than threshold value b, if ︱ BIt is given- B ︱ > b retention time be greater than t1, report proportioning valve it is hydraulic with
With failure, into troubleshootingStep；Otherwise, it is 4. walked into.
4.: judge ︱ MIt is givenWhether-M ︱ is greater than threshold value m, if more than 5. walking into；Otherwise, it is 2. walked into.
5.: it calculates main with position movement speed VM。
6.: calculate characteristic value K1=VM/(MIt is given-M)。
7.: with Standard Eigenvalue K1*It is compared, if K1/K1*≤ 0.01, and the retention time is greater than t2, reports proportioning valve liquid
Pressure follows failure, into troubleshooting theStep；Otherwise, K1*=(K1+K1*2.)/2 are walked into
8.: it calculates master and meets position translational acceleration aY。
⑨；Calculate characteristic value K1*K2=aY/ ﹛ KM*[KY*(YIt is given- Y)-M)] ﹜.
10.: with Standard Eigenvalue K12*It is compared, if K1*K2/K12*< 0.01, and the retention time is greater than t3, reports ratio
Valve is hydraulic to follow failure, into troubleshootingStep；Otherwise, K12*=(K1*K2+K12*2.)/2 are walked into.
: troubleshooting cuts standby host if having standby host and fault-free, 2. walks into；If standby host is faulty or without standby
Machine, then it is manual to cut machine, if artificial involution failure and being switched to non-machine manual mode, 2. walks into the.
A kind of governor master of the present invention connects, leads and matches and the hydraulic system for tracking intelligent fault diagnosis processing method of proportioning valve, excellent
Point is:
1, using method of the invention, the hydraulic system for tracking failure of proportioning valve can quick and precisely be diagnosed.
2, using method of the invention, main equipped hydraulic system for tracking failure can quick and precisely be diagnosed.
3, using method of the invention, it can quick and precisely diagnose master and connect hydraulic system for tracking failure.
4, using method of the invention, the hydraulic system for tracking location of fault that can clarify a diagnosis out is proportioning valve, master with also
It is that master connects.
5, in the method for the present invention it is main with follow failure criterion can self study according to the actual operation, self-correction is adaptive
It answers, the high reliablity of fault diagnosis, accuracy is high.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is governor Hydrawlic Slave System schematic diagram in the present invention
Fig. 2 is that governor master matches and the hydraulic system for tracking method for diagnosing and processing fault flow chart of proportioning valve.
Wherein: guide vane opening is fed back to Y, and the guide vane opening of governor electric control system PID module output is given as
YIt is given, aperture dead zone is YDead zone, guide vane opening control module gain coefficient is KY, the master of guide vane opening control module output is with position
It is given as MIt is given, main to be fed back to M with position, main control module gain coefficient of matching is KM, the main proportioning valve position with control module output
It sets and is given as BIt is given, proportional valve position is fed back to B, proportioning valve gain coefficient K1, main gain coefficient of matching is K2.
Specific embodiment
Governor master connects, leads and matches and the hydraulic system for tracking intelligent fault diagnosis processing method of proportioning valve, is one kind in unit
In the case of being incorporated into the power networks, governor electric-control system meets governor master, lead match and the hydraulic system for tracking failure of proportioning valve carry out it is real
When automated intelligent diagnostic process, and simultaneously to hydraulic system for tracking failure criterion carry out self study, self-correction, adaptive side
Method.
Governor Hydrawlic Slave System has two closed loop feedbacks as shown in Figure 1: guide vane opening control ring and master are with control
Ring.In governor Hydrawlic Slave System, proportioning valve belongs to an electro-hydraulic converting unit, is ideally equivalent to a ratio
Link；Master is associated with a hydraulic amplifying unit, is ideally equivalent to integral element and a proportional component series connection；Master matches
Belong to a hydraulic actuating unit, is ideally equivalent to an integral element.
Assuming that guide vane opening is fed back to Y, the guide vane opening of governor electric control system PID module output is given as YIt is given,
Guide vane opening control module gain coefficient is KY, the master of guide vane opening control module output is given as M with positionIt is given, main to match position
It is fed back to M, it is main to match position movement speed VM, main control module gain coefficient of matching is KM, the main proportioning valve position with control module output
It sets and is given as BIt is given, proportional valve position is fed back to B, proportioning valve gain coefficient K1, and main with gain coefficient is K2.Ignore delay and
Effect of inertia ideally, below two formulas necessarily set up.
B=BIt is given (1)
K1*KM*(MIt is given- M)=M '=VM (2)
KY*(YIt is given- Y)=MIt is given (3)
K2*M=Y ' (4)
It is obtained by (2) formula
K1=VM/(MIt is given-M) (5)
It is obtained by (2) (3) (4) formula
K2*K1*KM*[KY*(YIt is given- Y)-M)]=Y "=aY (6)
That is K1*K2=aY/ ﹛ KM*[KY*(YIt is given- Y)-M)] ﹜ (7)
(1) formula is the criterion that ideally proportioning valve follows failure, if bite or other failures occur for proportioning valve,
Then BIt is given=B.
(3) formula is ideally main with the criterion for following failure, if main match with generation bite or proportioning valve to master
It controls oil circuit and the failures such as oil leak pressure release occurs, then K1 characteristic value is relative to standard value K1*Significant change can occur.
(7) formula is the ideally main criterion for connecing and following failure, if the raw bite of main sending and receiving or master are fitted on master and connect control
The failures such as oil leak pressure release occur for liquefaction road, then K1*K2 characteristic value is relative to standard value K12*Significant change can occur.
During practice, proportioning valve, it is main match and lead connect response and have a fixed response time, proportioning valve, master match and lead
Connecing position feed back signal acquisition and processing also has certain time-delay, and proportioning valve, master, which match and lead, is connected to operating dead zone, the ratio that scene uses
Example valve main match and leads that connect the criterion for following failure optimization as follows:
Proportioning valve follows failure criterion: ︱ BIt is given- B ︱ > b, retention time are greater than t1.
Master, which matches, follows failure criterion: ︱ MIt is given- M ︱ > m, K1/K1*< 0.01, the retention time is greater than t2.
Main connect follows failure criterion: ︱ KY*(YIt is given- Y)-M ︱ > m, K1*K2/K12*, the retention time is greater than t3.
Main connect follows failure criterion Standard Eigenvalue K12 in the method for the present invention*, master, which matches, follows failure criterion Standard Eigenvalue
K1*Can self study according to the actual operation, self-correction, adaptively, thus reduce failure erroneous judgement risk, improve failure examine
Disconnected reliability.
Governor master, which matches, and proportioning valve is hydraulic follows method for diagnosing faults steps are as follows:
1.: governor electric-control system, K1*、K12*Assign initial value.
2.: governor electric-control system acquires guide vane opening in real time and is fed back to Y, and governor electric control system PID module is defeated
Guide vane opening out is given as YIt is given, the master of governor Hydrawlic Slave System guide vane opening control module output is given with position
MIt is given, main to match position feedback M, the main proportional valve position with control module output is given as BIt is given, it is several that proportional valve position is fed back to B etc.
According to.
Governor Hydrawlic Slave System guide vane opening control module is a data processing function in governor electric-control system
Block, it gives Y to input data guide vane openingIt is givenDifference operation is carried out with guide vane opening feedback Y, then with gain coefficient KYInto
Row ratio enlargement, finally output control signal master gives M with positionIt is given。
Main control module of matching is a data function blocks in governor electric-control system, it matches position to input data master
Given MIt is givenIt is fed back to M progress difference operation with position with main, then with gain coefficient KMRatio enlargement is carried out, finally output control
Signal proportion valve position processed gives BIt is given。
3.: judge ︱ BIt is givenWhether-B ︱ is greater than threshold value b, if ︱ BIt is given- B ︱ > b retention time be greater than t1, report proportioning valve it is hydraulic with
With failure, into troubleshootingStep；Otherwise, it is 4. walked into.
4.: judge ︱ MIt is givenWhether-M ︱ is greater than threshold value m, if more than 5. walking into；Otherwise, it is 2. walked into.
5.: it calculates main with position movement speed VM。
6.: calculate characteristic value K1=VM/(MIt is given-M)。
7.: with Standard Eigenvalue K1*It is compared, if K1/K1*≤ 0.01, and the retention time is greater than t2, reports proportioning valve liquid
Pressure follows failure, into troubleshooting theStep；Otherwise, K1*=(K1+K1*2.)/2 are walked into
8.: it calculates master and meets position translational acceleration aY。
9.: calculate characteristic value K1*K2=aY/ ﹛ KM*[KY*(YIt is given- Y)-M)] ﹜.
10.: with Standard Eigenvalue K12*It is compared, if K1*K2/K12*< 0.01, and the retention time is greater than t3, reports ratio
Valve is hydraulic to follow failure, into troubleshootingStep；Otherwise, K12*=(K1*K2+K12*2.)/2 are walked into.
Troubleshooting cuts standby host if having standby host and fault-free, 2. walks into；If standby host is faulty or without standby
Machine, then it is manual to cut machine, if artificial involution failure and being switched to non-machine manual mode, 2. walks into the.
Method of the invention be suitable for use ratio valve (or the redundant configurations such as proportioning valve+stepper motor) and lead match, relay
Device as execute structure type Hydropower Unit, it is intended in set grid-connection operational process, to governor proportioning valve, main control valve,
The executive components such as servomotor break down intermittent bite tripping or the hydraulic system for tracking such as oil leak pressure release occurs for control oil circuit therefore
Barrier carries out quick, intelligent diagnosis and processing, improves the accuracy and real-time of fault diagnosis, and fault spread is avoided to cause unit negative
Lotus can not normal regulating even load a series of problems, such as fluctuating widely.
Claims (4)
1. governor master connects, leads and matches and the hydraulic system for tracking intelligent fault diagnosis processing method of proportioning valve, it is characterised in that including
Following steps:
1.: governor electric-control system, K1*、K12*Assign initial value；
2.: governor electric-control system acquires guide vane opening in real time and is fed back to Y, the output of governor electric control system PID module
Guide vane opening is given as YIt is given, the master of governor Hydrawlic Slave System guide vane opening control module output is with the given M in positionIt is given, main
With position feedback M, the main proportional valve position with control module output is given as BIt is given, proportional valve position is fed back to the data such as B；
3.: judge ︱ BIt is givenWhether-B ︱ is greater than threshold value b, if ︱ BIt is given- B ︱ > b retention time is greater than t1, and report proportioning valve is hydraulic to follow event
Barrier, into troubleshooting theStep；Otherwise, it is 4. walked into；
4.: judge ︱ MIt is givenWhether-M ︱ is greater than threshold value m, if more than 5. walking into；Otherwise, it is 2. walked into；
5.: it calculates main with position movement speed VM；
6.: calculate characteristic value K1=VM/(MIt is given-M)；
7.: with Standard Eigenvalue K1*It is compared, if K1/K1*≤ 0.01, and the retention time be greater than t2, report proportioning valve it is hydraulic with
With failure, into troubleshootingStep；Otherwise, K1*=(K1+K1*2.)/2 are walked into
8.: it calculates master and meets position translational acceleration aY；
⑨；Calculate characteristic value K1*K2=aY/ ﹛ KM*[KY*(YIt is given- Y)-M)] ﹜；
10.: with Standard Eigenvalue K12*It is compared, if K1*K2/K12*< 0.01, and the retention time is greater than t3, reports proportioning valve liquid
Pressure follows failure, into troubleshooting theStep；Otherwise, K12*=(K1*K2+K12*2.)/2 are walked into；
Troubleshooting cuts standby host if having standby host and fault-free, 2. walks into；If standby host is faulty or without standby host,
It is manual to cut machine, if artificial involution failure and being switched to non-machine manual mode, is 2. walked into the.
2. governor master connects, leads and match and proportioning valve hydraulic system for tracking intelligent fault diagnosis processing side according to claim 1
Method, it is characterised in that:
Assuming that guide vane opening is fed back to Y, the guide vane opening of governor electric control system PID module output is given as YIt is given, guide vane
Aperture control module gain coefficient is KY, the master of guide vane opening control module output is given as M with positionIt is given, main to match position feedback
It is main to match position movement speed V for MM, main control module gain coefficient of matching is KM, the main proportional valve position exported with control module to
It is set to BIt is given, proportional valve position is fed back to B, proportioning valve gain coefficient K1, and main with gain coefficient is K2；Ignoring delay and inertia
Effect ideally, below two formulas necessarily set up；
B=BIt is given (1)
K1*KM*(MIt is given- M)=M '=VM (2)
KY*(YIt is given- Y)=MIt is given (3)
K2*M=Y ' (4)
It is obtained by (2) formula
K1=VM/(MIt is given-M) (5)
It is obtained by (2) (3) (4) formula
K2*K1*KM*[KY*(YIt is given- Y)-M)]=Y "=aY (6)
That is K1*K2=aY/ ﹛ KM*[KY*(YIt is given- Y)-M)] ﹜ (7)
(1) formula is the criterion that ideally proportioning valve follows failure, if bite or other failures occur for proportioning valve,
BIt is given=B；
(3) formula is ideally main with the criterion for following failure, if main match generation bite or proportioning valve to main with control
The failures such as oil leak pressure release occur for oil circuit, then K1 characteristic value is relative to standard value K1*Significant change can occur；
(7) formula is the ideally main criterion for connecing and following failure, if the raw bite of main sending and receiving or master, which are fitted on main connect, controls oil
The failures such as oil leak pressure release occur for road, then K1*K2 characteristic value is relative to standard value K12*Significant change can occur.
3. governor master connects, leads and match and proportioning valve hydraulic system for tracking intelligent fault diagnosis processing side according to claim 1
Method, it is characterised in that: proportioning valve that scene uses main match and leads that connect the criterion for following failure optimization as follows:
Proportioning valve follows failure criterion: ︱ BIt is given- B ︱ > b, retention time are greater than t1；
Master, which matches, follows failure criterion: ︱ MIt is given- M ︱ > m, K1/K1*< 0.01, the retention time is greater than t2；
Main connect follows failure criterion: ︱ KY*(YIt is given- Y)-M ︱ > m, K1*K2/K12*, the retention time is greater than t3.
4. governor master connects, leads and match and proportioning valve hydraulic system for tracking intelligent fault diagnosis processing side according to claim 1
Method, it is characterised in that: main connect follows failure criterion Standard Eigenvalue K12 in this method*, master, which matches, follows failure criterion standard feature
Value K1*It can self study, self-correction, adaptive according to the actual operation.
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| CN201910024087.9A CN109578191B (en) | 2019-01-10 | 2019-01-10 | Intelligent fault diagnosis and processing method for main connection, main distribution and proportional valve hydraulic following system of speed regulator |
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| CN201910024087.9A CN109578191B (en) | 2019-01-10 | 2019-01-10 | Intelligent fault diagnosis and processing method for main connection, main distribution and proportional valve hydraulic following system of speed regulator |
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| CN114810468A (en) * | 2020-12-07 | 2022-07-29 | 中国长江电力股份有限公司 | Control system combining guide vane opening analog quantity closed loop control and segmented open loop control |
| CN116221002A (en) * | 2023-01-04 | 2023-06-06 | 中国长江电力股份有限公司 | Oil-line oil-mixing judging method for switch cavity oil circuit of guide vane servomotor of large-scale hydroelectric generating set |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114810468A (en) * | 2020-12-07 | 2022-07-29 | 中国长江电力股份有限公司 | Control system combining guide vane opening analog quantity closed loop control and segmented open loop control |
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| CN116221002A (en) * | 2023-01-04 | 2023-06-06 | 中国长江电力股份有限公司 | Oil-line oil-mixing judging method for switch cavity oil circuit of guide vane servomotor of large-scale hydroelectric generating set |
| CN116221002B (en) * | 2023-01-04 | 2024-01-02 | 中国长江电力股份有限公司 | Oil-line oil-mixing judging method for switch cavity oil circuit of guide vane servomotor of large-scale hydroelectric generating set |
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| CN109578191B (en) | 2022-06-03 |
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