CN110109034A - A kind of real-time loss of excitation state monitoring method of gas turbine magnetoelectric tachometric transducer - Google Patents
A kind of real-time loss of excitation state monitoring method of gas turbine magnetoelectric tachometric transducer Download PDFInfo
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- CN110109034A CN110109034A CN201910308113.0A CN201910308113A CN110109034A CN 110109034 A CN110109034 A CN 110109034A CN 201910308113 A CN201910308113 A CN 201910308113A CN 110109034 A CN110109034 A CN 110109034A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P21/00—Testing or calibrating of apparatus or devices covered by the preceding groups
- G01P21/02—Testing or calibrating of apparatus or devices covered by the preceding groups of speedometers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/12—Measuring magnetic properties of articles or specimens of solids or fluids
- G01R33/1253—Measuring galvano-magnetic properties
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- Condensed Matter Physics & Semiconductors (AREA)
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Abstract
The invention discloses a kind of real-time loss of excitation state monitoring methods of gas turbine magnetoelectric tachometric transducer, by acquiring gas turbine delivery test number of units evidence, it establishes to calculate the neural network model that voltage is output, when gas turbine real time execution, control system passes through voltage measurement module real-time measurement and records speed probe inductive voltage value, real-time revolving speed, the sensor internal resistance measured and sensor installation gap width are inputted in established model, model output model calculates voltage value.If inductive voltage value differs larger with voltage value is calculated, control system issues " current rotating speed sensor has measurement hidden danger " monitoring, alarming.
Description
Technical field
The invention belongs to technical field of gas turbine more particularly to a kind of gas turbine magnetoelectric tachometric transducer to lose in real time
Magnetic state monitoring method.
Background technique
Gas turbine rotor revolving speed participates in gas turbine control, and during tachometric survey, any small failure all may be used
It can cause the inaccuracy of tachometric survey, the safe operation of gas turbine may be influenced.The magnetoelectric tachometric that gas turbine uses passes
Sense device working in the high temperature environment, with the increase of running time, will appear sensor sensing magnet steel magnet loss phenomenon, in sensor
More speed probe should be replaced before measurement failure, in case failure causes gas turbine emergency shutdown when occurring.
Summary of the invention
With the increase of gas turbine operation time, gas turbine magnetoelectric tachometric transducer works companion in the high temperature environment
The phenomenon that with loss of excitation, and then hidden danger is brought to tachometric survey, the present invention is directed to real-time monitoring speed probe loss of excitation state, early warning
Speed probe loss of excitation brings tachometric survey failure, to remind gas turbine operation personnel couple in tachometric survey safety margin
Speed probe is replaced, and tachometric survey failure is avoided to cause gas turbine emergency shutdown accident.
The purpose of the present invention is what is be implemented with the following technical solutions, a kind of gas turbine magnetoelectric tachometric transducer is real-time
Loss of excitation state monitoring method, comprising the following steps:
Step 1 acquires gas turbine delivery test number of units evidence, establishes neural network model；
Step 2, when gas turbine real time execution, control system passes through voltage measurement module real-time measurement and records revolving speed
Sensor sensing voltage value；
Step 3, when gas turbine real time execution, by real-time revolving speed, the sensor internal resistance measured and sensor clipping room
In the established model of gap value input step one, model output model calculates voltage value；
Step 4, the model exported in real time in the speed probe inductive voltage value of real-time measurement and step 3 in step 2
It calculates voltage value to compare, if difference is larger, control system issues " current rotating speed sensor has measurement hidden danger " monitoring report
It is alert.
Further, in step 1 gas turbine delivery test number of units according to establishing neural network model specifically: acquisition is more
Platform gas turbine delivery test data, in gas turbine rotor revolving speed n, speed probe installation gap width ɑ, speed probe
Input of the resistance value R as neural network model, output of the corresponding inductive voltage value U of revolving speed n as neural network model, to build
Formwork erection type.
Further, by the speed probe inductive voltage value U of real-time measurement in step 2 in step 4MeasurementWith step 3
In the model that exports in real time calculate voltage value UModelCompare, ifThen control system issue " when
There is measurement hidden danger in preceding speed probe " monitoring, alarming.
The real-time loss of excitation state monitoring method of gas turbine magnetoelectric tachometric transducer of the present invention is gone out by acquiring gas turbine
Factory's testing stand data are established to calculate the neural network model that voltage be output, and when gas turbine real time execution, control system is led to
Over-voltage measurement module real-time measurement simultaneously records speed probe inductive voltage value, will be in real-time revolving speed, the sensor measured
Resistance and sensor installation gap width input in established model, and model output model calculates voltage value.If inductive voltage value with
It is larger to calculate voltage value difference, then control system issues " current rotating speed sensor has measurement hidden danger " monitoring, alarming.
The present invention can carry out real-time loss of excitation status monitoring to gas turbine magnetoelectric tachometric transducer, to pacify in measurement
The replacement that sensor is carried out in full nargin, is of great significance to the stable operation of gas turbine.
Detailed description of the invention
Fig. 1 is the structure principle chart of gas turbine magnetoelectric tachometric transducer.
The flow chart of the real-time loss of excitation state monitoring method of Fig. 2 gas turbine magnetoelectric tachometric transducer of the present invention.
In figure, 1- shell, 2- coil, 3- skeleton, 4- lead, 5- inductive head, 6- thermal insulation layer, 7- iron core, 8- magnet steel and magnetic
Short-circuit piece.
Specific embodiment
Gas turbine magnetoelectric tachometric transducer structure such as Fig. 1, speed probe induced voltage are proportional to coil encirclement
Magnetic linkage to the change rate of time,(N is coil turn in formula；When magnetic flux, the t surrounded by coil is
Between, U be induced voltage), directly proportional (Sa Qi mechanical value measuring sensor difficult to understand is set for the frequency of induced voltage and tested revolving speed
Count the Beijing [M]: metering publishing house, 1984:136-138.).
With the increase of gas turbine operation time, the decrease of speed probe induced voltage, is implied under same rotating speed
There is measurement security risk in speed probe induced magnet loss of excitation, speed probe.
Technical solution of the present invention is described in detail below:
Step 1 acquires more gas turbine delivery test data, with gas turbine low-pressure compressor revolving speed n1, low pressure pressure
Mechanism of qi speed probe installs gap width ɑ 1, low-pressure compressor speed probe internal resistance value R1 as the defeated of neural network model
Enter, output of the low-pressure compressor speed probe inductive voltage value U1 as neural network model；High-pressure compressor revolving speed n2, height
Press rotating speed of gas compressor sensor installation gap width ɑ 2, high-pressure compressor speed probe internal resistance value R2 as neural network model
Input, output of the high-pressure compressor speed probe inductive voltage value U2 as neural network model；Power turbine revolving speed n3, it moves
Power turbine speed sensor installs gap width ɑ 3, power turbine speed probe internal resistance value R3 as the defeated of neural network model
Enter, output of the power turbine speed probe inductive voltage value U3 as neural network model, Lai Jianli model.
Step 2, when gas turbine real time execution, control system passes through voltage measurement module real-time measurement and records low pressure
The corresponding sensor sensing voltage value U1 of rotating speed of gas compressor n1 and revolving speed n1Measurement, high-pressure compressor revolving speed n2 and revolving speed n2 it is corresponding
Sensor sensing voltage value U2Measurement, power turbine revolving speed n3 and the corresponding sensor sensing voltage value U3 of revolving speed n3Measurement。
When gas turbine real time execution, real-time low-pressure compressor revolving speed n1, the low-pressure compressor measured are turned for step 3
Fast sensor is installed in gap width ɑ 1 and the established model of low-pressure compressor speed probe internal resistance value R1 input step one, mould
Type output model calculates voltage value U1It calculates, real-time high-pressure compressor revolving speed n2, the high-pressure compressor speed probe measured peace
It fills in gap width ɑ 2 and the established model of low-pressure compressor speed probe internal resistance value R2 input step one, model output model
Calculate voltage value U2It calculates, real-time power turbine revolving speed n3, the power turbine speed probe measured are installed gap width ɑ 3 and are moved
In the established model of power turbine speed sensor internal resistance value R3 input step one, model, output model calculates voltage value U3It calculates。
Step 4, by the speed probe inductive voltage value U of real-time measurement in step 2MeasurementWith exported in real time in step 3
Model calculate voltage value UModelCompare, ifThen " current low pressure is calmed the anger for control system sending
There is measurement hidden danger in machine speed probe " alarm；IfThen control system issues " current high
Rotating speed of gas compressor sensor is pressed to there is measurement hidden danger " alarm；IfThen control system issues
" current power turbine speed sensor has measurement hidden danger " alarm.
Operations staff replaces speed probe after being shut down according to operational plan after issuing alarm, to prevent revolving speed
Sensor because caused by loss of excitation tachometric survey failure cause gas turbine emergency shutdown accident to occur.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (3)
1. a kind of real-time loss of excitation state monitoring method of gas turbine magnetoelectric tachometric transducer, which is characterized in that including following step
It is rapid:
Step 1 acquires gas turbine delivery test number of units evidence, establishes neural network model；
Step 2, when gas turbine real time execution, control system passes through voltage measurement module real-time measurement and records revolution speed sensing
Device inductive voltage value；
Real-time revolving speed, the sensor internal resistance measured and sensor when gas turbine real time execution, are installed gap width by step 3
In the established model of input step one, model output model calculates voltage value；
Step 4, the model exported in real time in step 2 in the speed probe inductive voltage value of real-time measurement and step 3 calculate
Voltage value compares, if difference is larger, control system issues " current rotating speed sensor has measurement hidden danger " monitoring, alarming.
2. the real-time loss of excitation state monitoring method of gas turbine magnetoelectric tachometric transducer according to claim 1, feature
It is, gas turbine delivery test number of units is according to establishing neural network model in the step 1 specifically: more combustion gas wheels of acquisition
Machine delivery test data are made with gas turbine rotor revolving speed n, speed probe installation gap width ɑ, speed probe internal resistance value R
For the input of neural network model, output of the corresponding inductive voltage value U of revolving speed n as neural network model, Lai Jianli model.
3. the real-time loss of excitation state monitoring method of gas turbine magnetoelectric tachometric transducer according to claim 1, feature
It is, by the speed probe inductive voltage value U of real-time measurement in step 2 in the step 4MeasurementWith in step 3 in real time it is defeated
Model out calculates voltage value UModelCompare, ifThen control system issues " current rotating speed biography
There is measurement hidden danger in sensor " monitoring, alarming.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910308113.0A CN110109034A (en) | 2019-04-17 | 2019-04-17 | A kind of real-time loss of excitation state monitoring method of gas turbine magnetoelectric tachometric transducer |
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| CN201910308113.0A CN110109034A (en) | 2019-04-17 | 2019-04-17 | A kind of real-time loss of excitation state monitoring method of gas turbine magnetoelectric tachometric transducer |
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| CN110109034A true CN110109034A (en) | 2019-08-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111638003A (en) * | 2020-05-06 | 2020-09-08 | 中国船舶重工集团公司第七O三研究所无锡分部 | Method for correcting deviation of gas turbine power measurement after replacement of hydraulic dynamometer |
Citations (2)
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| JPH06160427A (en) * | 1992-11-18 | 1994-06-07 | Sumitomo Electric Ind Ltd | Revolution sensor and method for detecting its fault |
| CN106874569A (en) * | 2017-01-19 | 2017-06-20 | 中国科学院工程热物理研究所 | One kind becomes geometry split gas turbine real-time simulation modeling method |
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2019
- 2019-04-17 CN CN201910308113.0A patent/CN110109034A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06160427A (en) * | 1992-11-18 | 1994-06-07 | Sumitomo Electric Ind Ltd | Revolution sensor and method for detecting its fault |
| CN106874569A (en) * | 2017-01-19 | 2017-06-20 | 中国科学院工程热物理研究所 | One kind becomes geometry split gas turbine real-time simulation modeling method |
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| 朱嵘嘉等: ""基于RBF神经网络的燃气轮机转速传感器故障诊断研究"", 《电气自动化》 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111638003A (en) * | 2020-05-06 | 2020-09-08 | 中国船舶重工集团公司第七O三研究所无锡分部 | Method for correcting deviation of gas turbine power measurement after replacement of hydraulic dynamometer |
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