CN111258301A - Problem detection method and device - Google Patents
Problem detection method and device Download PDFInfo
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- CN111258301A CN111258301A CN202010075990.0A CN202010075990A CN111258301A CN 111258301 A CN111258301 A CN 111258301A CN 202010075990 A CN202010075990 A CN 202010075990A CN 111258301 A CN111258301 A CN 111258301A
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- 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
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0259—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the response to fault detection
- G05B23/0267—Fault communication, e.g. human machine interface [HMI]
- G05B23/027—Alarm generation, e.g. communication protocol; Forms of alarm
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Abstract
The invention discloses a problem detection method and a problem detection device, which are applied to an electro-hydraulic control system, wherein the electro-hydraulic control system is used for controlling the operation parameters of a steam turbine unit, the electro-hydraulic control system comprises a plurality of components, and the method comprises the following steps: acquiring working parameters of the components in the working process of the electro-hydraulic control system, wherein the working parameters are used for describing the working states of the components; and determining a problem component in the plurality of components and a problem occurring in the problem component according to the working parameters. Therefore, the problems of the problem components and the problems of the problem components in the multiple components can be judged by acquiring the working parameters of the multiple components in the electro-hydraulic control system, so that the problems of the problem components and the problems of the problem components can be accurately detected without checking all the components one by one under the condition that the electro-hydraulic control system breaks down, the maintenance time is shortened, the maintenance difficulty is reduced, and the working efficiency of the electro-hydraulic control system is improved.
Description
Technical Field
The invention relates to the field of hydraulic control, in particular to a problem detection method and device.
Background
In the prior art, an electro-hydraulic control system can be used for controlling working parameters such as the rotating speed and the pressure of a steam turbine unit. Generally, an electro-hydraulic control system may include a servo card, a servo valve, a Linear Variable Differential Transformer (LVDT), a servomotor, and the like, and when a steam turbine unit is controlled, the flow rate or pressure of an output may be controlled according to a valve position command signal, so as to control the steam turbine unit.
When the electrohydraulic control system breaks down, in order to maintain the electrohydraulic control system, problem components in the electrohydraulic control system and specific problems of the problem components need to be determined.
However, since the number of components included in the electro-hydraulic control system is large, and a failure of each component causes a failure of the electro-hydraulic control system, it is difficult to accurately determine a problem component and a specific problem occurring in the problem component in the electro-hydraulic control system, and it is difficult to maintain the electro-hydraulic control system.
Disclosure of Invention
The embodiment of the invention provides a problem detection method and device, and aims to solve the problem that a problem component in an electro-hydraulic control system and a specific problem of the problem component cannot be accurately judged under the condition that the electro-hydraulic control system fails, so that the electro-hydraulic control system is difficult to maintain.
In order to solve the technical problem, the invention is realized as follows:
in a first aspect, a problem detection method is provided, which is applied to an electro-hydraulic control system, where the electro-hydraulic control system is used to control an operating parameter of a steam turbine unit, and the electro-hydraulic control system includes a plurality of components, and the method includes:
acquiring working parameters of the components in the working process of the electro-hydraulic control system, wherein the working parameters are used for describing the working states of the components;
and determining a problem component in the plurality of components and a problem occurring in the problem component according to the working parameters.
In a second aspect, a problem detection device is provided, which is applied to an electro-hydraulic control system, the electro-hydraulic control system is used for controlling operation parameters of a steam turbine unit, the electro-hydraulic control system includes a plurality of components, and the device includes:
the acquisition module is used for acquiring working parameters of the components in the working process of the electro-hydraulic control system, and the working parameters are used for describing the working states of the components;
and the determining module is used for determining a problem component in the plurality of components and a problem occurring in the problem component according to the working parameters.
In a third aspect, an electronic device is provided, where the electronic device is applied to an electrohydraulic control system, where the electrohydraulic control system is used to control an operating parameter of a steam turbine unit, and the electrohydraulic control system includes a plurality of components, and the method includes:
a processor; and
a memory arranged to store computer executable instructions that, when executed, cause the processor to:
acquiring working parameters of the components in the working process of the electro-hydraulic control system, wherein the working parameters are used for describing the working states of the components;
and determining a problem component in the plurality of components and a problem occurring in the problem component according to the working parameters.
In a fourth aspect, a computer-readable storage medium is presented, the computer-readable storage medium storing one or more programs that, when executed by an electronic device comprising a plurality of application programs, cause the electronic device to perform the method of:
acquiring working parameters of the components in the working process of the electro-hydraulic control system, wherein the working parameters are used for describing the working states of the components;
and determining a problem component in the plurality of components and a problem occurring in the problem component according to the working parameters.
The problem detection method provided by the embodiment of the invention is applied to an electro-hydraulic control system, wherein the electro-hydraulic control system can comprise a plurality of components, and in the working process of the electro-hydraulic control system, working parameters of the components can be obtained, and problem components in the components and problems occurring in the problem components can be determined according to the working parameters, wherein the working parameters can be used for describing the working states of the components. Therefore, in the working process of the electro-hydraulic control system, the problems of the problem components and the problems of the problem components in the components can be judged by acquiring the working parameters of the components in the electro-hydraulic control system, so that the problems of the problem components and the problems of the problem components can be accurately detected without checking all the components one by a worker under the condition that the electro-hydraulic control system breaks down, the maintenance time of the electro-hydraulic control system can be shortened, the maintenance difficulty is reduced, and the working efficiency of the electro-hydraulic control system is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic flow diagram of a problem detection method according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart diagram of a problem detection method according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an electronic device according to an embodiment of the invention;
fig. 4 is a schematic structural diagram of a problem detection device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
FIG. 1 is a flow chart of a problem detection method according to an embodiment of the present invention. The method is applied to an electro-hydraulic control system, the electro-hydraulic control system comprises a plurality of components, and the plurality of components can control the operation parameters of the steam turbine unit through mutual matching, such as the rotation speed, the pressure and other operation parameters of the steam turbine unit.
The problem detection method shown in fig. 1 may be used to detect a problem component and a problem occurring in the problem component in an electro-hydraulic control system during operation of the electro-hydraulic control system, and the method is described as follows.
S102: the method comprises the steps of obtaining working parameters of a plurality of components in the working process of the electro-hydraulic control system, wherein the working parameters are used for describing the working states of the components.
The electro-hydraulic control system can comprise a plurality of components, and during the operation of the electro-hydraulic control system, the plurality of components can generate operation parameters, and the operation parameters can be used for describing the operation states of the plurality of components. In this embodiment, the working parameters of the multiple components in the working process of the electro-hydraulic control system may be obtained, so as to determine the problem component and the problem occurring in the problem component in the multiple components based on the working parameters.
In this embodiment, the plurality of components may include at least one of a servo card, a servo valve, and a Linear Variable Differential Transformer (LVDT). Alternatively, the plurality of components may further include a servomotor and the like.
In one implementation, in the case that the plurality of components include a servo card, the operating parameters of the servo card may be acquired when the operating parameters are acquired. The working parameters in the servo card may include codes generated by the servo card during the working process of the electro-hydraulic control system, and may be represented by a first code for convenience of distinction. The first code may be used to describe an operating state of the server card, and the operating state of the server card may include a manual state, a verification state, a download state, and the like.
It should be noted that, in the working process of the electro-hydraulic control system, after the servo card generates the first code, the first code may be stored locally, that is, the first code is stored in the servo card, so that when the first code is obtained, the first code may be directly obtained from the servo card.
In an implementation manner, the plurality of components may further include a redundant servo card, where the redundant servo card is used to replace the servo card when the servo card fails, and when the working parameter is obtained, the working parameter of the redundant servo card may also be obtained. The operating parameters in the redundant servo card may include codes generated by the redundant servo card in the working process of the electro-hydraulic control system, and for convenience of distinguishing, the codes may be represented by second codes, where the second codes may be used to describe the working states of the redundant servo card, and the working states of the redundant servo card may include a ready state, a restart state, and the like, and correspondingly, the second codes may include codes when the redundant servo card is in the ready state, codes when the redundant servo card is in the restart state, and the like.
It should be noted that, in the process of operating the electro-hydraulic control system, after the redundant servo card generates the second code, the second code may be stored locally, so that when the second code is acquired, the second code may be directly acquired from the redundant servo card.
In one implementation, the above components may further include a servo valve, and when the operating parameter is obtained, the operating parameter of the servo valve may also be obtained, and the operating parameter of the servo valve may describe an operating state of the servo valve.
In this embodiment, the servo valve may be connected to the servo card, the servo card may include a current-limiting resistor, the servo card may provide a voltage to the servo valve through the current-limiting resistor, the servo valve may include a servo coil, the servo card may provide a voltage to the servo valve, two ends of the servo coil in the servo valve may generate a voltage, and the servo coil may control an opening degree of the servo valve under an effect of the voltage.
Based on the connection structure and the working principle of the servo card and the servo valve, when the working parameters of the servo valve are obtained, the voltage across the current-limiting resistor and the voltage acting on the servo coil can be obtained, that is, the working parameters of the servo valve can include the voltage across the current-limiting resistor and the voltage acting on the servo coil, and here, for convenience of distinguishing, the working parameters can be represented by the first voltage and the second voltage respectively. The first voltage and the second voltage can describe the working state of a servo coil in the servo valve, and the working state can include whether the servo coil is short-circuited or broken or the like.
It should be noted that, in the working process of the electro-hydraulic control system, when the first voltage and the second voltage are obtained, the first voltage and the second voltage may be obtained by a measurement method, or the first voltage and the second voltage may be stored in a servo card and read from the servo card, which is not limited specifically herein.
In one implementation, the plurality of components may further include a Linear Variable Differential Transformer (LVDT), and when the operating parameter is obtained, the operating parameter of the LVDT may be obtained, and the operating parameter of the LVDT may describe an operating state of the LVDT.
In this embodiment, the LVDT may be connected to the servo card and the servo valve, the servo card may provide a voltage to the LVDT, the LVDT may include a primary coil, a first secondary coil and a second secondary coil, after the servo card provides the voltage to the LVDT, the primary coil in the LVDT may drive the first secondary coil and the second secondary coil under the effect of the voltage, the first secondary coil and the second secondary coil may generate a voltage difference according to an opening degree of the servo valve, and feed back the voltage difference to the servo card, and the servo card may determine the opening degree of the servo valve according to the voltage difference, so as to implement closed-loop control, and further enable the electro-hydraulic control system to achieve higher control accuracy.
Based on the above connection structure and working principle of the LVDT, the servo card and the servo valve, when obtaining the working parameter of the LVDT, the voltage output by the servo card to the LVDT may be obtained, that is, the working parameter of the LVDT may include the voltage output by the servo card to the LVDT, and here, for convenience of distinction, may be represented by a third voltage. Wherein the third voltage may describe an operating state of the primary coil, the first secondary coil and the second secondary coil in the LVDT, and the operating state may include whether at least one of the primary coil, the first secondary coil and the second secondary coil is short-circuited.
It should be noted that, in the working process of the electro-hydraulic control system, when the third voltage is obtained, the third voltage may be obtained by a measurement method, or the third voltage may be stored in the servo card and read from the servo card, which is not limited specifically herein.
S104: and determining a problem component in the plurality of components and a problem occurring in the problem component according to the working parameters.
In S104, after the working parameters of the multiple components in the working process of the electro-hydraulic control system are acquired, the acquired working parameters may be analyzed according to the acquired working parameters, so as to determine a problem component and a problem occurring in the problem component in the multiple components.
In one implementation, in a case that the plurality of components include a servo card and the operating parameter includes the first code, when determining a problem component in the plurality of components and a problem occurring in the problem component according to the operating parameter, the first code may be compared with a first correct code determined in advance, where the first correct code may be used to describe a normal operating state of the servo card; after the comparison result is obtained, it may be determined whether the problem part includes the servo card according to the comparison result, and in the case where it is determined that the problem part includes the servo card, it may be determined that the servo card has a problem.
Specifically, assuming that the code of the servo card in the normal verification state is a, after the first code is obtained, the first code may be compared with a, and if the comparison result is that the first code is not a, the servo card may be considered as a problem component, and then, the first code may be subjected to logic judgment, and it is further determined that the problem occurring in the servo card is verification timeout according to the result of the logic judgment.
Optionally, in this embodiment, it may be determined whether the following problem occurs in the servo card according to the first code: the method comprises the following steps of DA Read-back errors, Erasable Programmable Read-Only Memory (EPROM) errors, Memory Read/write errors, check overtime, uploading errors, downloading errors, poor quality of check results, no readiness, forced output of a measuring point, stopping scanning of the measuring point, incomplete instruction, no instruction or feedback reception, damaged switching function, damaged restarting function, and the like.
In one implementation, in the case that the plurality of components include a redundant servo card and the operating parameter includes the second code, when a problem component in the plurality of components and a problem occurring in the problem component are determined according to the operating parameter, the second code may be compared with a second correct code determined in advance, where the second correct code may be used to describe a normal operating state of the redundant servo card; after the comparison result is obtained, it may be determined whether the problem component includes a redundant servo card based on the comparison result, and in the case where it is determined that the problem component includes a redundant servo card, a problem with the redundant servo card may be determined.
Specifically, assuming that the code of the redundant servo card in the normal ready state is b, after the second code is obtained, the second code may be compared with b, and if the comparison result is that the second code is not b, the redundant servo card may be considered as a problem component, and then, a logical judgment may be performed on the second code, and it may be further determined that the problem occurring in the redundant servo card is the non-ready state according to the result of the logical judgment.
Optionally, in this embodiment, it may be determined whether the following problem occurs in the redundant servo card according to the second code: not ready, wiring error, unavailable, no instruction or feedback received, damaged switching function, damaged restarting function, etc.
It should be noted that, under the condition that the electro-hydraulic control system includes the servo card and the redundant servo card, if the servo card has a problem and the redundant servo card has no problem, the redundant servo card can be used to replace the servo card, and the first code in the servo card is read into the redundant servo card, so as to prevent the work of the electro-hydraulic control system from being affected by the problem of the servo card; or, the redundant servo card can be replaced by the servo card only when the servo card has special problems, wherein the special problems at least comprise DA read-back errors, EPROM errors and memory read/write errors of the servo card, thus the problem that the first code in the servo card is lost because the redundant servo card is frequently replaced by the servo card when the servo card has problems can be avoided.
In one implementation, where the plurality of components include servo valves and the operating parameter includes the first voltage and the second voltage, when determining a problem component and a problem occurring with the problem component in the plurality of components based on the operating parameter, it may be determined whether the problem component includes servo valves based on the first voltage and the second voltage, and where it is determined that the problem component includes servo valves, it may be determined that a problem occurs with the servo valves.
Specifically, if the first voltage is 0, the servo valve can be considered as a problem component, and it is determined that the problem of the servo valve is the open circuit of the servo coil; if the first voltage is not 0 and the second voltage is 0, the servo valve may be considered to be a problem component and it may be determined that the problem with the servo valve is a servo coil short circuit.
In this embodiment, in the case where the plurality of components include LVDTs and the operating parameter includes the third voltage, when determining a problem component and a problem occurring in the problem component among the plurality of components based on the operating parameter, it may be determined whether the problem component includes an LVDT based on the third voltage, and in the case where it is determined that the problem component includes an LVDT, the problem occurring in the LVDT may be determined.
Specifically, if the third voltage is 0, the LVDT may be considered as a problem component, and it is determined that the problem with the LVDT is that at least one of the primary coil, the first secondary coil and the second secondary coil is short-circuited.
In the case where the servo valve is included in the plurality of components, if the plurality of components are all normal components, the problems may be determined as jamming of the servo valve, internal leakage of the servo valve and the unloading valve, or mechanical jamming of the servo valve.
Specifically, under the condition that the electro-hydraulic control system has a fault, if the first code in the servo card, the second code in the redundant servo card, the first voltage, the second voltage and the third voltage have no problem, the problems that the servo valve is jammed, the inside of the servo valve and the unloading valve leaks or the servo valve is mechanically jammed can be determined, wherein the unloading valve is used for unloading or reducing the pressure load of a sealed container in the electro-hydraulic control system.
After determining the problem component and the problem occurring in the problem component in the plurality of components, the electro-hydraulic control system in this embodiment may further send warning information, where the warning information may include the problem component and the problem occurring in the problem component, and the electro-hydraulic control system may further include a screen so as to display the warning information in the screen of the electro-hydraulic control system.
For example, when the problem component is determined to be the servo valve and the problem of the servo valve is the short circuit of the servo coil, the alarm information of the short circuit of the servo coil in the servo valve can be displayed in a red font on a screen of the electro-hydraulic control system.
Optionally, the warning message may be a text message or a voice message, so as to remind the worker to deal with the problem in time.
It should be noted that, in this embodiment, some problems that do not affect the normal operation may also occur in the electro-hydraulic control system, and these problems naturally disappear after a period of time elapses, but in order to avoid hidden dangers, the embodiment provided in the present invention may store the alarm information each time, so that the worker may query the record of sending the alarm information at any time, and repair the electro-hydraulic control system in time, thereby avoiding a fault caused by the hidden dangers.
Alternatively, in the case where no problem occurs in any of the plurality of components, the normal operating states of the plurality of components may be displayed in the screen.
In order to facilitate understanding of the problem detection method, the electro-hydraulic control system including the servo card, the redundant servo card, the servo valve and the LVDT may be taken as an example for explanation, and specifically, refer to fig. 2.
FIG. 2 is a flowchart illustrating a problem detection method according to an embodiment of the present invention. In fig. 2, the electro-hydraulic control system includes a servo card, a redundant servo card, a servo valve and an LVDT, wherein the servo card is connected with the servo valve and the LVDT, the redundant servo card is also connected with the servo valve and the LVDT, the LVDT is connected with the servo valve, the redundant servo card is used for replacing the servo card when the servo card fails, a current limiting resistor (not shown in fig. 2) can be included in the servo card, a current limiting resistor (not shown in fig. 2) can be included in the redundant servo card, a servo coil (not shown in fig. 2) can be included in the servo valve, and a primary coil, a first secondary coil and a second secondary coil (both shown in fig. 2) can be included in the LVDT.
In the working process of the electro-hydraulic control system, a servo card can provide voltage to a servo valve through a current-limiting resistor, after the servo card provides the voltage to the servo valve, voltage can be generated at two ends of a servo coil in the servo valve, and the servo coil can control the opening degree of the servo valve under the action of the voltage.
The servo card may also provide a voltage to the LVDT, and after the servo card provides the voltage to the LVDT, the primary coil in the LVDT may drive the first secondary coil and the second secondary coil under the action of the voltage, and the first secondary coil and the second secondary coil may generate a voltage difference according to the opening degree of the servo valve and feed the voltage difference back to the servo card to determine the opening degree of the servo valve, where the voltage may be referred to as a third voltage for convenience of description.
In this embodiment, during the operation of the electro-hydraulic control system, the operating parameters of the servo card, the redundant servo card, the servo valve and the LVDT may be obtained, so as to determine the problem component among the above components and the problem occurring in the problem component according to the operating parameters.
Specifically, a code (hereinafter, may be represented by a first code) generated by the servo card during the operation of the electro-hydraulic control system, a code (hereinafter, may be represented by a second code) generated by the redundant servo card during the operation of the electro-hydraulic control system, and the first voltage, the second voltage, and the third voltage may be obtained. Alternatively, the first code, the first voltage, the second voltage, and the third voltage may be obtained from a server card, and the second code may be obtained from a redundant server card.
After the operating parameters are obtained, the operating parameters may be analyzed to determine problem components and problems with the problem components.
Specifically, the first code may be compared with a first correct code determined in advance, where the first correct code is used to describe a normal operating state of the servo card, and if the comparison result indicates that the first code is not the first correct code, the servo card may be considered as a problem component, and the first code may be logically determined, and a problem occurring in the servo card may be further determined according to a result of the logical determination.
Similarly, the second code may be compared with a predetermined second correct code, where the second correct code is used to describe a normal operating state of the redundant servo card, and if the comparison result indicates that the second code is not the second correct code, the redundant servo card may be considered as a problem component, and the second code may be logically determined, and a problem occurring in the redundant servo card may be further determined according to a result of the logical determination.
Whether the problem part comprises a servo valve or not can be determined according to the first voltage and the second voltage, and in the case that the problem part comprises the servo valve, the problem of the servo valve is determined, specifically, if the first voltage is 0, the servo valve is determined to be the problem part, and the problem of the servo valve is determined to be the open circuit of a servo coil; if the first voltage is not 0 and the second voltage is 0, it is determined that the servo valve is a problem part and it is determined that the servo valve has a problem in which the servo coil is short-circuited.
Whether the problem component comprises the LVDT can be further determined according to the third voltage, and in the case that the problem component comprises the LVDT, the problem occurring on the LVDT is determined, specifically, if the third voltage is 0, the LVDT can be determined as the problem component, and the problem occurring on the LVDT is determined to be that at least one of the primary coil, the first secondary coil and the second secondary coil is short-circuited.
After the problem component and the problem occurring in the problem component are determined, the electro-hydraulic control system can also send out warning information, wherein the warning information can comprise the problem component and the problem occurring in the problem component, so that a worker can timely maintain the problem component and the problem occurring in the problem component.
Optionally, the warning information at each time can be stored, so that a worker can inquire the warning information at any time and determine whether hidden danger occurs according to the warning information, and therefore the electro-hydraulic control system can be overhauled in time, and faults caused by the hidden danger are avoided.
The problem detection method provided by the embodiment of the invention is applied to an electro-hydraulic control system, wherein the electro-hydraulic control system can comprise a plurality of components, and in the working process of the electro-hydraulic control system, working parameters of the components can be obtained, and problem components in the components and problems occurring in the problem components can be determined according to the working parameters, wherein the working parameters can be used for describing the working states of the components. Therefore, in the working process of the electro-hydraulic control system, the problems of the problem components and the problems of the problem components in the components can be judged by acquiring the working parameters of the components in the electro-hydraulic control system, so that the problems of the problem components and the problems of the problem components can be accurately detected without checking all the components one by a worker under the condition that the electro-hydraulic control system breaks down, the maintenance time of the electro-hydraulic control system can be shortened, the maintenance difficulty is reduced, and the working efficiency of the electro-hydraulic control system is improved.
Fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present invention. Referring to fig. 3, at a hardware level, the electronic device includes a processor, and optionally further includes an internal bus, a network interface, and a memory. The Memory may include a Memory, such as a Random-Access Memory (RAM), and may further include a non-volatile Memory, such as at least 1 disk Memory. Of course, the electronic device may also include hardware required for other services.
The processor, the network interface, and the memory may be connected to each other via an internal bus, which may be an ISA (Industry Standard Architecture) bus, a PCI (peripheral component Interconnect) bus, an EISA (Extended Industry Standard Architecture) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one double-headed arrow is shown in FIG. 3, but this does not indicate only one bus or one type of bus.
And the memory is used for storing programs. In particular, the program may include program code comprising computer operating instructions. The memory may include both memory and non-volatile storage and provides instructions and data to the processor.
The processor reads the corresponding computer program from the nonvolatile memory into the memory and then runs the computer program, and the problem detection device is formed on the logic level. The processor is used for executing the program stored in the memory and is specifically used for executing the following operations:
acquiring working parameters of the components in the working process of the electro-hydraulic control system, wherein the working parameters are used for describing the working states of the components;
and determining a problem component in the plurality of components and a problem occurring in the problem component according to the working parameters.
The method performed by the problem detection apparatus according to the embodiment of the invention shown in fig. 3 can be applied to or implemented by a processor. The processor may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but also Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.
The electronic device may also execute the method of fig. 1 and implement the function of the problem detection apparatus in the embodiment shown in fig. 1, which is not described herein again in the embodiments of the present invention.
Of course, besides the software implementation, the electronic device of the present invention does not exclude other implementations, such as a logic device or a combination of software and hardware, and the like, that is, the execution main body of the following processing flow is not limited to each logic unit, and may also be hardware or a logic device.
Embodiments of the present invention also provide a computer-readable storage medium storing one or more programs, where the one or more programs include instructions, which when executed by a portable electronic device including a plurality of application programs, enable the portable electronic device to perform the method of the embodiment shown in fig. 1, and are specifically configured to:
acquiring working parameters of the components in the working process of the electro-hydraulic control system, wherein the working parameters are used for describing the working states of the components;
and determining a problem component in the plurality of components and a problem occurring in the problem component according to the working parameters.
Fig. 4 is a schematic structural diagram of a problem detection device 40 according to an embodiment of the present invention. Referring to fig. 4, in a software implementation, the problem detection apparatus 40 may include an obtaining module 41 and a determining module 42, wherein: the problem detection device 40 is used in an electrohydraulic control system for controlling operating parameters of a steam turbine unit, the electrohydraulic control system including a plurality of components, the device including:
the obtaining module 41 is configured to obtain working parameters of the multiple components in a working process of the electro-hydraulic control system, where the working parameters are used to describe working states of the multiple components;
a determination module 42 determines a problem component of the plurality of components and a problem occurring with the problem component based on the operating parameter.
Optionally, the plurality of components include a servo card, the operating parameter includes a first code generated by the servo card, the first code is used for describing an operating state of the servo card, and the first code is stored in the servo card;
wherein the determining module 42 determines, according to the operating parameter, a problem component of the plurality of components and a problem occurring in the problem component, and includes:
comparing the first code with a predetermined first correct code, wherein the first correct code is used for describing the normal working state of the servo card; and determining whether the problem part includes the servo card according to the comparison result, and in the case that the problem part includes the servo card, the servo card has a problem.
Optionally, the plurality of components further include a redundant servo card, the operating parameters further include a second code generated by the redundant servo card, the second code is used for describing an operating state of the redundant servo card, and the second code is stored in the redundant servo card;
wherein the determining module 42 determines, according to the operating parameter, a problem component of the plurality of components and a problem occurring in the problem component, and includes:
comparing the second code with a predetermined second correct code, wherein the second correct code is used for describing the normal working state of the redundant servo card; and determining whether the problem component comprises the redundant servo card according to the comparison result, and determining that the redundant servo card has a problem if the problem component comprises the redundant servo card.
Optionally, the redundant servo card is connected with the servo card;
wherein, the determining module 42, after determining the problem component in the plurality of components and the problem occurring in the problem component according to the operating parameter, further includes:
and if the problem part comprises the servo card, replacing the redundant servo card with the servo card, and reading the first code into the redundant servo card.
Optionally, the plurality of components further include a servo valve, the servo card is connected to the servo valve, the servo card includes a current-limiting resistor, the servo valve includes a servo coil, the operating parameter further includes a first voltage across the current-limiting resistor and a second voltage acting on the servo coil, and the servo coil controls an opening degree of the servo valve under the action of the second voltage;
wherein the determining module 42 determines, according to the operating parameter, a problem component of the plurality of components and a problem occurring in the problem component, and includes:
if the first voltage is 0, determining that the problem component comprises the servo valve, and the problem of the servo valve comprises the open circuit of the servo coil;
and if the first voltage is not 0 and the second voltage is 0, determining that the problem component comprises the servo valve, and determining that the problem of the servo valve comprises short circuit of the servo coil.
Optionally, the plurality of components further include a linear variable differential transformer LVDT, the servo card is connected to the LVDT, the LVDT includes a primary coil, a first secondary coil and a second secondary coil, the operating parameter further includes a third voltage output by the servo card to the LVDT, the third voltage is used for the primary coil to drive the first secondary coil and the second secondary coil, and the first secondary coil and the second secondary coil are used for judging the opening degree of the servo valve;
wherein the determining module 42 determines, according to the operating parameter, a problem component of the plurality of components and a problem occurring in the problem component, and includes:
if the third voltage is 0, determining that the problem component comprises the LVDT, wherein the problem comprises a short circuit of at least one of the primary coil, the first secondary coil and the second secondary coil.
Optionally, a servo valve is included in the plurality of components;
wherein the determining module 42, after determining a problem component of the plurality of components and a problem occurring in the problem component, further includes:
and if the parts are normal parts, determining that the servo valve is jammed, and the inside of the servo valve and the unloading valve is leaked or the servo valve is mechanically jammed.
Optionally, the determining module 42, after determining a problem component of the plurality of components and a problem occurring in the problem component, further includes:
sending alarm information, wherein the alarm information comprises the problem component and the problem of the problem component;
and displaying the alarm information in a screen of the electro-hydraulic control system.
The problem detection apparatus 40 provided in the embodiment of the present invention may also execute the method shown in fig. 1, and implement the functions of the problem detection apparatus in the embodiment shown in fig. 1, which are not described herein again in the embodiment of the present invention.
In short, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
The systems, devices, modules or units illustrated in the above embodiments may be implemented by a computer chip or an entity, or by a product with certain functions. One typical implementation device is a computer. In particular, the computer may be, for example, a personal computer, a laptop computer, a cellular telephone, a camera phone, a smartphone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or a combination of any of these devices.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include transitory computer readable media (transmyedia) such as modulated data signals and carrier waves.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. The term "comprising" is used to specify the presence of stated features, integers, steps, operations, elements, components, operations.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A problem detection method, applied to an electro-hydraulic control system for controlling an operating parameter of a steam turbine unit, the electro-hydraulic control system including a plurality of components, the method comprising:
acquiring working parameters of the components in the working process of the electro-hydraulic control system, wherein the working parameters are used for describing the working states of the components;
and determining a problem component in the plurality of components and a problem occurring in the problem component according to the working parameters.
2. The method of claim 1,
the plurality of parts comprise a servo card, the working parameters comprise a first code generated by the servo card, the first code is used for describing the working state of the servo card, and the first code is stored in the servo card;
wherein determining a problem component of the plurality of components and a problem occurring with the problem component based on the operating parameters comprises:
comparing the first code with a predetermined first correct code, wherein the first correct code is used for describing the normal working state of the servo card; and determining whether the problem part includes the servo card according to the comparison result, and in the case that the problem part includes the servo card, the servo card has a problem.
3. The method of claim 2,
the plurality of components further comprise a redundant servo card, the operating parameters further comprise a second code generated by the redundant servo card, the second code is used for describing the operating state of the redundant servo card, and the second code is stored in the redundant servo card;
wherein determining a problem component of the plurality of components and a problem occurring with the problem component based on the operating parameters comprises:
comparing the second code with a predetermined second correct code, wherein the second correct code is used for describing the normal working state of the redundant servo card; and determining whether the problem component comprises the redundant servo card according to the comparison result, and determining that the redundant servo card has a problem if the problem component comprises the redundant servo card.
4. The method of claim 3, wherein the redundant servo card and the servo card are connected;
wherein, after determining a problem component of the plurality of components and a problem occurring with the problem component based on the operating parameters, the method further comprises:
and if the problem part comprises the servo card, replacing the redundant servo card with the servo card, and reading the first code into the redundant servo card.
5. The method of claim 2,
the plurality of components further comprise a servo valve, the servo card is connected with the servo valve, the servo card comprises a current-limiting resistor, the servo valve comprises a servo coil, the working parameters further comprise a first voltage at two ends of the current-limiting resistor and a second voltage acting on the servo coil, and the servo coil controls the opening of the servo valve under the action of the second voltage;
wherein determining a problem component of the plurality of components and a problem occurring with the problem component based on the operating parameters comprises:
if the first voltage is 0, determining that the problem component comprises the servo valve, and the problem of the servo valve comprises the open circuit of the servo coil;
and if the first voltage is not 0 and the second voltage is 0, determining that the problem component comprises the servo valve, and determining that the problem of the servo valve comprises short circuit of the servo coil.
6. The method of claim 5,
the plurality of components further comprise a Linear Variable Differential Transformer (LVDT), the servo card is connected with the LVDT, the LVDT comprises a primary coil, a first secondary coil and a second secondary coil, the working parameters further comprise a third voltage output by the servo card to the LVDT, the third voltage is used for the primary coil to drive the first secondary coil and the second secondary coil, and the first secondary coil and the second secondary coil are used for judging the opening degree of the servo valve;
wherein determining a problem component of the plurality of components and a problem occurring with the problem component based on the operating parameters comprises:
if the third voltage is 0, determining that the problem component comprises the LVDT, wherein the problem comprises a short circuit of at least one of the primary coil, the first secondary coil and the second secondary coil.
7. The method of claim 1, wherein the plurality of components include servo valves;
wherein after determining a problem component of the plurality of components and a problem occurring in the problem component, the method further comprises:
and if the parts are normal parts, determining that the servo valve is jammed, and the inside of the servo valve and the unloading valve is leaked or the servo valve is mechanically jammed.
8. The method of claim 1, after determining a problem component of the plurality of components and a problem occurring with the problem component, further comprising:
sending alarm information, wherein the alarm information comprises the problem component and the problem of the problem component;
and displaying the alarm information in a screen of the electro-hydraulic control system.
9. A problem detection device is characterized in that the problem detection device is applied to an electro-hydraulic control system, the electro-hydraulic control system is used for controlling operation parameters of a steam turbine unit, the electro-hydraulic control system comprises a plurality of components, and the device comprises:
the acquisition module is used for acquiring working parameters of the components in the working process of the electro-hydraulic control system, and the working parameters are used for describing the working states of the components;
and the determining module is used for determining a problem component in the plurality of components and a problem occurring in the problem component according to the working parameters.
10. The apparatus of claim 9,
the plurality of parts comprise a servo card, the working parameters comprise a first code generated by the servo card, the first code is used for describing the working state of the servo card, and the first code is stored in the servo card;
wherein the determining module determines a problem component of the plurality of components and a problem occurring in the problem component according to the operating parameter, and includes:
comparing the first code with a predetermined first correct code, wherein the first correct code is used for describing the normal working state of the servo card; and determining whether the problem part includes the servo card according to the comparison result, and in the case that the problem part includes the servo card, the servo card has a problem.
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