CN116382149A - Static debugging method for gas turbine control system - Google Patents
Static debugging method for gas turbine control system Download PDFInfo
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- CN116382149A CN116382149A CN202310105948.2A CN202310105948A CN116382149A CN 116382149 A CN116382149 A CN 116382149A CN 202310105948 A CN202310105948 A CN 202310105948A CN 116382149 A CN116382149 A CN 116382149A
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000003068 static effect Effects 0.000 title claims abstract description 22
- 238000009413 insulation Methods 0.000 claims abstract description 11
- 238000004088 simulation Methods 0.000 claims abstract description 8
- 230000002159 abnormal effect Effects 0.000 claims description 34
- 238000013461 design Methods 0.000 claims description 11
- 239000010687 lubricating oil Substances 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 8
- 239000000446 fuel Substances 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 5
- 239000000295 fuel oil Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 9
- 238000005259 measurement Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The invention discloses a static debugging method of a gas turbine control system, which relates to the technical field of gas turbine control, and comprises the following steps: checking the correctness of wiring, grounding resistance, insulation resistance, signal input and output of a control system according to the debugging flow of the control system, testing the starting interlocking condition item by item, and finally checking the starting flow, working condition adjustment, limiting protection, fault protection and other control functions of the gas turbine through simulation starting to complete the testing of a control loop and a control time sequence of the main control cabinet and ensure that the control system is in a stable and reliable state before the gas turbine is put into operation.
Description
Technical Field
The invention relates to the technical field of gas turbine control, in particular to a static debugging method of a gas turbine control system.
Background
The gas turbine is an internal combustion power machine which uses continuously flowing gas as working medium to push the impeller to rotate at high speed and convert the energy of fuel into mechanical work, and is a rotary impeller type heat engine. The gas turbine control system consists of a plurality of sensors, an actuating mechanism and a control unit, and once the gas turbine control system fails, the gas turbine control system has a great safety effect on a gas turbine body, so that serious consequences are caused.
In view of this, the static debugging of the control system is required to be carried out before the gas turbine is put into operation, and the static debugging method provided by the application confirms the wiring correctness of the control system according to the debugging flow of the control system, checks the power supply of the control system, detects the correctness of signal input and signal output, and tests the started interlocking condition item by item, so that the control system is ensured to be in a stable and reliable state before the gas turbine is put into operation.
Disclosure of Invention
The inventor provides a static debugging method of a gas turbine control system aiming at the problems and the technical requirements, and the technical scheme of the invention is as follows:
a static debugging method of a gas turbine control system comprises the following steps:
completing the installation wiring of the gas turbine control system, checking the connection lines of all control equipment, and if abnormal, checking and replacing the corresponding connection cables or electric connectors; the gas turbine control system comprises a fuel system, a lubricating oil system, an air system, a sub-control unit of a fire protection system and a main control cabinet;
if the power supply is normal, checking the power supplies of all the control systems, and if the power supply is abnormal, checking and replacing the power supplies and the power lines of the system;
if the input signals are normal, all the input signals of the control system are checked, and if the input signals are abnormal, the corresponding input loops are checked and replaced;
if the output signals are normal, all the output signals of the control system are checked, and if the output signals are abnormal, the corresponding output loops are checked and replaced;
if the interlocking condition is normal, checking the started interlocking condition item by item, and if the interlocking condition is abnormal, checking and replacing the interlocking condition signal loop;
if the control logic time sequence function is normal, checking the control logic time sequence function of the control system under the corresponding simulation working condition, and if the control logic time sequence function is abnormal, checking and replacing the corresponding control module of the main control cabinet.
The further technical scheme is that the power supply voltage of all control equipment is checked, and the method comprises the following steps:
under the condition of no power supply, checking whether the grounding resistance and the insulation resistance of all control equipment meet relevant requirements, and if so, checking and replacing the equipment grounding wire and the power wire; if the requirements are met, checking whether the power supply voltage of all the control equipment is normal or not under the power supply condition;
wherein the ground resistance meets the requirement of not more than 10mΩ;
when the voltage is direct current, the insulation resistance meets the requirement of not less than 1MΩ; when the voltage is alternating current, the insulation resistance meets the requirement of not less than 9MΩ.
The further technical scheme is that all input signals of the control system are checked, if abnormal, the corresponding input loops are checked and replaced, and when the input signals are digital input signals:
disconnecting the signal electric connector of the digital quantity sensor, triggering a switching value feedback signal on the electric connector by using a short-circuit wire, and observing whether a signal feedback value is correct or not at a monitoring interface of a control system; if the digital signal input circuit is abnormal, the digital signal input circuit is checked and replaced.
The further technical scheme is that all input signals of the control system are checked, if the input signals are abnormal, the corresponding input loops are checked and replaced, and the method further comprises the steps that when the input signals are analog input signals:
and disconnecting the signal electric connector of the analog quantity sensor, simulating a corresponding signal source on the electric connector by using a standard signal generator, observing whether the signal feedback value is correct or not at a monitoring interface of the control system, and if so, checking and replacing the analog signal input loop.
The further technical scheme is that all output signals of the control system are checked, if abnormal, the corresponding output loop is checked and replaced, and the method comprises the following steps that when the output signals are analog output signals:
disconnecting the analog output signal electric connector, adjusting the analog output signal control mode to a manual mode, measuring signals by using a standard signal generator on the electric connector, and checking and replacing the analog output circuit of the equipment if the signals are abnormal.
The further technical scheme is that all output signals of the control system are checked, if the output signals are abnormal, the corresponding output loops are checked and replaced, and the control system further comprises that when the output signals are digital output signals, the execution mechanism receives the digital output signals:
the control mode of the actuating mechanism is adjusted to be a manual mode, the actuating mechanism is disconnected to control the electric connector, the control system is utilized to monitor an interface or short-circuit relay contacts to output actuating instructions of the actuating mechanism, a universal meter is utilized to measure the voltage of the node terminal of the electric connector of the equipment, and if the voltage is abnormal, the equipment control instruction loop is checked and replaced;
the actuating mechanism comprises an electromagnetic valve, an electric valve, a rotating mechanism, an oil supply and return pump motor, a starting motor and an igniter.
The further technical scheme is that the method checks the starting interlocking condition item by item and comprises the following steps:
disconnecting the signal electric connector corresponding to the gas turbine starting interlocking condition, simulating the starting interlocking signal by using a shorting wire or a standard signal generator, and checking the interlocking condition item by item; the interlocking conditions comprise that the rotating speed of the gas turbine is lower than a set value, the lubricating oil pressure is normal, the lubricating oil temperature is normal, the fuel oil pressure is normal, a stop switch is closed, the position of a guide vane is normal, and the state of a starting motor is normal.
The further technical scheme is that under the corresponding simulation working condition, the control logic time sequence function of the control system is checked, and the method comprises the following steps:
disconnecting the gas turbine operation key control signal electric connector, and simulating corresponding signal sources by using a standard signal generator to enable the gas turbine to simulate the processes of starting, working condition operation and normal shutdown; adjusting the standard signal generator to enable the executing mechanism to act at a set working point, and checking whether the corresponding control logic time sequence meets the design requirement;
wherein, the operation key control signals comprise a rotating speed signal, a temperature signal and a pressure signal.
The method further comprises the following steps:
under the simulated working condition running state of the gas turbine, the opening of the fuel regulating valve is increased, so that the gas turbine is simulated to enter the working condition above a slow car, the standard signal generator is regulated, the limiting protection is simulated item by item, the executing mechanism acts at a set working point, whether the logic time sequence of the limiting protection meets the design requirement is checked, and if the logic time sequence of the limiting protection meets the design requirement, the corresponding control module of the main control cabinet is checked and replaced.
The method further comprises the following steps:
and under the simulated working condition operation state of the gas turbine, regulating the standard signal generator, simulating the shutdown fault of the gas turbine item by item, enabling the actuating mechanism to act at a set working point, checking whether the fault shutdown logic time sequence meets the design requirement, and if so, checking and replacing the corresponding control module of the main control cabinet.
The beneficial technical effects of the invention are as follows:
the method is used for checking the circuit connection, the grounding resistance, the insulation resistance, the signal input loop, the control command loop and the starting interlocking condition of the control system, checking the starting flow, the working condition adjustment, the limiting protection and the fault protection control function of the gas turbine by using the simulation starting to finish the test of the control loop and the control time sequence of the main control cabinet, and can be used for quickly and effectively confirming the function, the performance and the system state of the gas turbine control system, ensuring that the control system is in a stable and reliable state before the gas turbine is put into operation and having important significance for the safe operation of the gas turbine.
Drawings
FIG. 1 is a flow chart of a method for static debugging of a gas turbine control system provided by the present application.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings.
As shown in fig. 1, the present application discloses a method for static debugging of a gas turbine control system, when the gas turbine control system completes installation wiring, the control system should perform static debugging according to the following flow steps before formal commissioning:
and firstly, completing the installation wiring of the gas turbine control system, namely completing the installation wiring of the sub-control units such as the gas turbine fuel system, the lubricating oil system, the air system, the fire-fighting system and the like and the main control cabinet.
And step two, checking the connection lines of all the control devices.
Pulling out a connecting plug between the control devices, connecting on/off of corresponding core wires between the electric connectors by using a universal meter measuring device, and checking and replacing corresponding connecting cables or the electric connectors if the core wires are abnormal; if the connection is normal, all the connection electric connectors are recovered, and the step three is entered.
And thirdly, checking the power supply of all the control systems.
Under the condition of no power supply, checking whether the grounding resistance and the insulation resistance of all control equipment meet relevant requirements, and if so, checking and replacing the equipment grounding wire and the power wire. Specifically, the ground resistance measurement generally adopts milliohmmeter to measure the resistance of a grounding bolt and a good end of the equipment, and generally requires that the resistance is not more than 10mΩ; if the grounding resistance is abnormal, checking and replacing the equipment grounding wire; in the insulation measurement, when the voltage is DC24V, 100V megameters are usually adopted, the resistance of the positive end, the negative end and the good end of a test system power supply is required to be generally not smaller than 1MΩ, when the voltage is AC220V or AC380V, 500V megameters are usually adopted, the resistance of each item and the good end of the test system power supply is required to be generally not smaller than 9MΩ, and when the insulation resistance is abnormal, the equipment power supply, a cable, a sensor, an actuator and the like are subjected to sectional inspection and replacement.
If the requirements are met, checking whether the power supply voltage of all the control equipment is normal or not under the power supply condition, and if the power supply voltage is abnormal, checking and replacing a system power supply and a power line; if the result is normal, the step four is entered.
Step four, checking all input signals of the control system, including:
1) Checking a digital quantity input signal of the control system: disconnecting the digital quantity sensor signal electric connector (namely pulling out the digital quantity sensor signal plug), shorting the positive terminal and the negative terminal on the electric connector by utilizing a shorting wire, triggering a switching value feedback signal, observing whether a signal feedback value is correct at a control system monitoring interface, and checking and replacing a digital signal input loop if the signal feedback value is incorrect; if normal, the next step is entered.
2) Checking analog input signals of a control system: disconnecting an analog quantity (temperature, pressure, rotating speed and the like) sensor signal electric connector, simulating corresponding signal sources by using a standard signal generator on the electric connector, uniformly taking 5-10 measuring points (including upper and lower limits) in a full range, observing whether a signal feedback value is correct at a control system monitoring interface, and if so, checking and replacing an analog signal input loop; if the result is normal, the step five is entered.
Step five, checking all output signals of the control system, including:
1) Checking analog output signals of the control system: disconnecting the analog output signal electric connector, adjusting the analog output signal control mode to a manual mode, carrying out signal measurement on the electric connector by utilizing a standard signal generator, and normally uniformly selecting 5-10 measuring points (including upper and lower limits) in the whole range for carrying out signal test, and if the analog output signal electric connector is abnormal, checking and replacing an analog output circuit of the equipment; if the signal is normal, the digital and analog signal electric connectors are restored, and the next step is carried out.
2) Checking the digital quantity output signal of the control system by the detection executing mechanism: the control mode of the execution mechanism is adjusted to be a manual mode when the execution mechanism receives the digital quantity output signal, the execution mechanism is disconnected to control the electric connector, the control system is used for monitoring an interface or shorting a relay contact to output an action instruction of the execution mechanism, a universal meter is used for measuring the voltage of a node terminal of the electric connector of the equipment, and if the voltage is abnormal, an equipment control instruction loop is checked and replaced; if the operation is normal, the step six is entered.
The actuating mechanism comprises an electromagnetic valve, an electric valve, a rotating mechanism, an oil supply and return pump motor, a starting motor and an igniter.
Step six, checking the started interlocking condition item by item.
Disconnecting the signal electric connector corresponding to the starting interlocking condition of the gas turbine, simulating the starting interlocking signal by using a shorting bar or a standard signal generator, checking the interlocking condition item by item, and if abnormal, checking and replacing the signal loop of the interlocking condition; if so, the step seven is entered.
The interlocking conditions comprise that the rotating speed of the gas turbine is lower than a set value, the lubricating oil pressure is normal, the lubricating oil temperature is normal, the fuel oil pressure is normal, a stop switch is closed, the position of a guide vane is normal, and the state of a starting motor is normal.
And step seven, checking the control logic time sequence function of the control system under the corresponding simulation working condition.
Disconnecting the gas turbine operation key control signal electric connector, and simulating corresponding signal sources by using a standard signal generator to simulate the gas turbine to enter the processes of starting, working condition operation, normal shutdown and the like; adjusting a standard signal generator to enable an executing mechanism to act at a set working point, checking whether corresponding control logic time sequences meet design requirements, and if so, checking and replacing corresponding control modules of the main control cabinet; if so, the step eight is entered.
Wherein, the operation key control signals comprise a rotating speed signal, a temperature signal and a pressure signal.
And step eight, testing the limiting protection function of the control system under the corresponding simulation working condition.
Under the operating state of the gas turbine under the simulated working condition, increasing the opening of a fuel regulating valve, simulating the gas turbine to enter the working condition above a slow car, regulating a standard signal generator, simulating limiting protection item by item, enabling an executing mechanism to act at a set working point, checking whether the logic time sequence of the limiting protection meets the design requirement, and if so, checking and replacing a corresponding control module of the main control cabinet; if the operation is normal, the step nine is entered.
And step nine, testing the fault protection function of the control system under the corresponding simulation working condition.
Under the simulated working condition operation state of the gas turbine, the standard signal generator is regulated, the shutdown fault of the gas turbine is simulated item by item, the actuating mechanism acts at a set working point, whether the fault shutdown logic time sequence meets the design requirement is checked, and if the fault shutdown logic time sequence is abnormal, the corresponding control module of the main control cabinet is checked and replaced; if no abnormality exists, all the states of the electric connectors are restored, and the static debugging of the gas turbine control system is completed.
In the fourth step, the detection sequence of the analog input signal and the digital input signal may be exchanged, but other steps such as checking the executing mechanism or checking the analog output signal are usually performed after the digital input signal and the analog input signal are tested normally, because the correct feedback can be obtained only when the control command is output to the external device on the premise that the input signal is normal, so as to determine whether the control system is normal.
What has been described above is only a preferred embodiment of the present application, and the present invention is not limited to the above examples. It is to be understood that other modifications and variations which may be directly derived or contemplated by those skilled in the art without departing from the spirit and concepts of the present invention are deemed to be included within the scope of the present invention.
Claims (10)
1. A method for static debugging of a gas turbine control system, the method comprising:
completing the installation wiring of the gas turbine control system, checking the connection lines of all control equipment, and if abnormal, checking and replacing the corresponding connection cables or electric connectors; the gas turbine control system comprises a fuel system, a lubricating oil system, an air system, a sub-control unit of a fire protection system and a main control cabinet;
if the power supply is normal, checking the power supplies of all the control systems, and if the power supply is abnormal, checking and replacing the power supplies and the power lines of the system;
if the input signals are normal, all the input signals of the control system are checked, and if the input signals are abnormal, the corresponding input loops are checked and replaced;
if the output signals are normal, all the output signals of the control system are checked, and if the output signals are abnormal, the corresponding output loops are checked and replaced;
if the interlocking condition is normal, checking the started interlocking condition item by item, and if the interlocking condition is abnormal, checking and replacing the interlocking condition signal loop;
if the control logic time sequence function is normal, checking the control logic time sequence function of the control system under the corresponding simulation working condition, and if the control logic time sequence function is abnormal, checking and replacing the corresponding control module of the main control cabinet.
2. The method for static debugging of a gas turbine control system according to claim 1, wherein said checking the supply voltage of all control devices comprises:
under the condition of no power supply, checking whether the grounding resistance and the insulation resistance of all control equipment meet relevant requirements, and if so, checking and replacing the equipment grounding wire and the power wire; if the requirements are met, checking whether the power supply voltage of all the control equipment is normal or not under the power supply condition;
wherein the ground resistance meets the requirement of not more than 10mΩ;
when the voltage is direct current, the insulation resistance meets the requirement of not less than 1MΩ; when the voltage is alternating current, the insulation resistance meets the requirement of not less than 9MΩ.
3. The method for static debugging of a control system of a gas turbine according to claim 1, wherein said checking all input signals of the control system, if abnormal, checking and replacing the corresponding input circuit, comprises, when said input signals are digital input signals:
disconnecting the signal electric connector of the digital quantity sensor, triggering a switching value feedback signal on the electric connector by using a short-circuit wire, and observing whether a signal feedback value is correct or not at a monitoring interface of a control system; if the digital signal input circuit is abnormal, the digital signal input circuit is checked and replaced.
4. The method for static debugging of a control system of a gas turbine according to claim 1, wherein said checking all input signals of the control system, if abnormal, checking and replacing the corresponding input circuit, further comprises, when said input signal is an analog input signal:
and disconnecting the signal electric connector of the analog quantity sensor, simulating a corresponding signal source on the electric connector by using a standard signal generator, observing whether the signal feedback value is correct or not at a monitoring interface of the control system, and if so, checking and replacing the analog signal input loop.
5. The method for static debugging of a control system of a gas turbine according to claim 1, wherein said checking all output signals of the control system, if abnormal, checking and replacing the corresponding output circuit, comprises, when the output signal is an analog output signal:
disconnecting the analog output signal electric connector, adjusting the analog output signal control mode to a manual mode, measuring signals by using a standard signal generator on the electric connector, and checking and replacing the analog output circuit of the equipment if the signals are abnormal.
6. The method for static debugging of a control system of a gas turbine according to claim 1, wherein said checking all output signals of the control system, if abnormal, checking and replacing the corresponding output circuit, further comprises, when said output signal is a digital output signal, receiving said digital output signal by an actuator:
the control mode of the actuating mechanism is adjusted to be a manual mode, the actuating mechanism is disconnected to control the electric connector, the control system is used for monitoring an interface or shorting a relay contact to output an actuating mechanism action command, a universal meter is used for measuring the voltage of a node terminal of the electric connector of the equipment, and if the voltage is abnormal, an equipment control command loop is checked and replaced;
the actuating mechanism comprises an electromagnetic valve, an electric valve, a rotating mechanism, an oil supply and return pump motor, a starting motor and an igniter.
7. The method for static debugging of a gas turbine control system according to claim 1, wherein said checking for a start-up interlock condition item by item comprises:
disconnecting the signal electric connector corresponding to the gas turbine starting interlocking condition, simulating the starting interlocking signal by using a shorting wire or a standard signal generator, and checking the interlocking condition item by item; the interlocking conditions comprise that the rotating speed of the gas turbine is lower than a set value, the lubricating oil pressure is normal, the lubricating oil temperature is normal, the fuel oil pressure is normal, a stop switch is closed, the position of a guide vane is normal and the state of a starting motor is normal.
8. The method for static debugging of a control system of a gas turbine according to claim 1, wherein said checking the control logic timing function of the control system under the corresponding simulated conditions comprises:
disconnecting the gas turbine operation key control signal electric connector, and simulating corresponding signal sources by using a standard signal generator to enable the gas turbine to simulate the processes of starting, working condition operation and normal shutdown; adjusting the standard signal generator to enable the executing mechanism to act at a set working point, and checking whether the corresponding control logic time sequence meets the design requirement;
wherein the operation key control signals comprise a rotating speed signal, a temperature signal and a pressure signal.
9. The method for static tuning a gas turbine control system of claim 1, further comprising:
under the simulated working condition running state of the gas turbine, the opening of the fuel regulating valve is increased, so that the gas turbine is simulated to enter the working condition above a slow car, the standard signal generator is regulated, the limiting protection is simulated item by item, the executing mechanism acts at a set working point, whether the logic time sequence of the limiting protection meets the design requirement is checked, and if the logic time sequence of the limiting protection meets the design requirement, the corresponding control module of the main control cabinet is checked and replaced.
10. The method for static tuning a gas turbine control system of claim 1, further comprising:
and under the simulated working condition operation state of the gas turbine, regulating the standard signal generator, simulating the shutdown fault of the gas turbine item by item, enabling the actuating mechanism to act at a set working point, checking whether the fault shutdown logic time sequence meets the design requirement, and if so, checking and replacing the corresponding control module of the main control cabinet.
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| CN202310105948.2A CN116382149A (en) | 2023-02-10 | 2023-02-10 | Static debugging method for gas turbine control system |
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| CN202310105948.2A CN116382149A (en) | 2023-02-10 | 2023-02-10 | Static debugging method for gas turbine control system |
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