Method and device for controlling turboset based on temperature instrument

Abstract

The invention provides a control method and device for a steam turbine unit based on a temperature meter, and the method comprises the steps: obtaining a first electric signal of the temperature meter arranged on the steam turbine unit at a current sampling moment and a second electric signal of the temperature meter arranged on the steam turbine unit at a previous sampling moment in the operation process of the steam turbine unit, and determining a signal variation of the temperature instrument at a preset time interval according to the first electric signal and the second electric signal, determining that the temperature instrument breaks down under the condition that the signal variation is greater than or equal to a preset variation threshold value, stopping performing interlocking control on the steam turbine unit according to the first electric signal, and outputting fault prompt information. Wherein the fault prompt information is used for indicating that the temperature instrument breaks down. Therefore, the situation of wrong parking caused by abnormal temperature due to the fault of the temperature instrument can be avoided, and corresponding personnel are prompted that the temperature instrument breaks down through the fault prompt information, so that the corresponding personnel can check the fault of the temperature instrument.

Description

Technical Field

[0001] The present application relates to the field of computer technology, and in particular to a method and device for controlling a steam turbine unit based on a temperature instrument. Background Art

[0002] At present, in order to protect the steam turbine unit (for example, the steam turbine unit used in the coal field) and ensure the safe and stable operation of the steam turbine unit, many temperature instruments are usually installed in the steam turbine unit to detect the temperature of the corresponding components in the steam turbine unit. Correspondingly, the steam turbine unit is interlocked and controlled according to the temperature output by the temperature instrument. For example, when the temperature value output by the temperature instrument exceeds the preset temperature threshold, the steam turbine unit is forced to stop to inspect the steam turbine unit. However, if the above-mentioned temperature value exceeds the preset temperature threshold because of the failure of the temperature instrument, the failure of the temperature instrument may cause the steam turbine unit to stop by mistake, thereby affecting production and causing huge waste of raw materials and intermediate products. Summary of the invention

[0003] The present application proposes a method and device for controlling a steam turbine unit based on a temperature instrument.

[0004] On one hand, an embodiment of the present application proposes a method for controlling a steam turbine unit based on a temperature instrument, the method comprising: during the operation of the steam turbine unit, obtaining a first electrical signal of a temperature instrument provided on the steam turbine unit at a current sampling moment, and obtaining a second electrical signal of the temperature instrument at a sampling moment before the current sampling moment, wherein the time interval between the current sampling moment and the previous sampling moment is a preset time interval; determining a signal change amount of the temperature instrument within the preset time interval based on the first electrical signal and the second electrical signal; determining that a fault has occurred in the temperature instrument when the signal change amount is greater than or equal to a preset change amount threshold, stopping interlocking control of the steam turbine unit based on the first electrical signal, and outputting a fault prompt message, wherein the fault prompt message is used to indicate that a fault has occurred in the temperature instrument.

[0005] On the other hand, an embodiment of the present application proposes a control device for a steam turbine unit based on a temperature instrument, the device comprising: an acquisition module, used to acquire a first electrical signal of a temperature instrument provided on the steam turbine unit at a current sampling moment during the operation of the steam turbine unit, and acquire a second electrical signal of the temperature instrument at a sampling moment before the current sampling moment, wherein the time interval between the current sampling moment and the previous sampling moment is a preset time interval; a determination module, used to determine a signal change amount of the temperature instrument within the preset time interval based on the first electrical signal and the second electrical signal; a processing module, used to determine that a fault occurs in the temperature instrument when the signal change amount is greater than or equal to a preset change amount threshold, and stop interlocking control of the steam turbine unit based on the first electrical signal, and output fault prompt information, wherein the fault prompt information is used to indicate that a fault occurs in the temperature instrument.

[0006] On the other hand, an embodiment of the present application proposes an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the method for controlling a steam turbine unit based on a temperature instrument according to an embodiment of the present application is implemented.

[0007] On the other hand, an embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the method for controlling a steam turbine unit based on a temperature instrument in an embodiment of the present application is implemented.

[0008] Another aspect of the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the method for controlling a steam turbine unit based on a temperature instrument in the embodiment of the present application.

[0009] The technical solution provided by the embodiments of the present application may have the following beneficial effects:

[0010] During the operation of the steam turbine unit, a first electrical signal of a temperature instrument at the current sampling moment and a second electrical signal at the previous sampling moment are obtained, and the signal change amount of the temperature instrument at a preset time interval is determined based on the first electrical signal and the second electrical signal, and when the signal change amount is greater than or equal to the preset change amount threshold, it is determined that the temperature instrument has failed, and the interlocking control of the steam turbine unit according to the first electrical signal is stopped, and a fault prompt information is output, wherein the fault prompt information is used to indicate that the temperature instrument has failed. Thus, the temperature instrument is accurately determined to have failed through the signal change amount and the preset change amount threshold, and when the temperature instrument fails, the interlocking control of the steam turbine unit according to the first electrical signal is stopped, thereby avoiding the occurrence of an erroneous shutdown caused by abnormal temperature due to the failure of the temperature instrument, and the corresponding personnel are prompted by the fault prompt information that the temperature instrument has failed, so that the corresponding personnel can perform a fault check on the temperature instrument without stopping the steam turbine unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to better understand the present solution and do not constitute a limitation of the present application.

[0012] Figure 1 is a flow chart of a method for controlling a steam turbine unit based on a temperature instrument according to an embodiment of the present application;

[0013] Figure 2 is a flow chart of a method for controlling a steam turbine unit based on a temperature instrument according to another embodiment of the present application;

[0014] Figure 3 is a flow chart of a method for controlling a steam turbine unit based on a temperature instrument according to another embodiment of the present application;

[0015] Figure 4 is a flow chart of a method for controlling a steam turbine unit based on a temperature instrument according to another embodiment of the present application;

[0016] Figure 5 is a structural schematic diagram of a control device for a steam turbine unit based on a temperature instrument according to an embodiment of the present application;

[0017] Figure 6 It is a structural block diagram of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0018] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0019] The following describes, with reference to the accompanying drawings, a method, device, electronic device, and storage medium for controlling a steam turbine unit based on a temperature instrument in an embodiment of the present application.

[0020] Figure 1 It is a flow chart of a method for controlling a steam turbine unit based on a temperature instrument according to an embodiment of the present application. It should be noted that the method for controlling a steam turbine unit based on a temperature instrument provided in this embodiment is executed by a control device for a steam turbine unit based on a temperature instrument, and the control device for a steam turbine unit based on a temperature instrument in this embodiment can be implemented by software and / or hardware, and the control device for a steam turbine unit based on a temperature instrument in this example can be an electronic device, or can be configured in an electronic device.

[0021] The electronic devices in this example embodiment may include terminal devices, servers, etc., wherein the terminal devices may be PCs (Personal Computers), mobile devices, tablet computers, etc., and this embodiment does not specifically limit this.

[0022] like Figure 1 As shown, the control method for the steam turbine unit based on the temperature instrument may include:

[0023] Step 101, during the operation of the steam turbine unit, obtain a first electrical signal of a temperature meter installed in the steam turbine unit at a current sampling moment, and obtain a second electrical signal of the temperature meter at a sampling moment before the current sampling moment, wherein the time interval between the current sampling moment and the previous sampling moment is a preset time interval.

[0024] The steam turbine unit in this embodiment generally refers to steam turbine equipment used for power generation, which is generally combined with a coal combustion process to provide steam to drive an electric generator.

[0025] Among them, the temperature instrument set in the steam turbine unit means that the temperature instrument is placed, installed or configured in the steam turbine unit.

[0026] The steam turbine unit in this embodiment may be various types of steam turbine units used in the coal field.

[0027] It should be noted that the temperature instrument in this embodiment can be any temperature instrument in the steam turbine unit. That is to say, when multiple temperature instruments are installed in the steam turbine unit, the method disclosed in this embodiment is applicable to each temperature instrument in the steam turbine unit.

[0028] In some embodiments, the temperature instrument may include a temperature measuring element and a temperature transmitter.

[0029] In some embodiments, the temperature measuring element can be a thermistor sensor, wherein the working principle of the thermistor sensor is based on the characteristic that the resistance value of the thermistor material changes with the change of temperature. Wherein, the thermistor material is a conductor, and its resistance value changes when the temperature changes. Generally, the resistance value of the thermistor material decreases with the increase of temperature and increases with the decrease of temperature. The measurement circuit of the thermistor sensor usually includes a thermistor element and a reference resistance element. The thermistor element is the core part of the thermistor sensor, and its resistance value changes with the change of temperature. The reference resistance element is a resistor used to calibrate the resistance value of the thermistor element, and its resistance value is usually between 10K and 100K. When the thermistor sensor is affected by temperature changes, its resistance value changes. The measurement circuit measures the resistance value difference between the thermistor element and the reference resistance element, and outputs an electrical signal related to temperature based on the measurement result.

[0030] Among them, the temperature transmitter is an instrument used to measure and transmit temperature signals. The working principle of the temperature transmitter is based on the thermoelectric effect. The thermoelectric effect refers to the potential difference caused by the difference in temperature at the contact point of two different metals. The temperature transmitter generally consists of a thermal resistor temperature sensing element composed of two different metals connected to the measured temperature point to form a thermoelectric circuit. When the measured temperature changes, the temperature in the thermoelectric circuit also changes accordingly. The thermal resistor temperature sensing element will generate a weak electrical signal related to the temperature. The temperature transmitter collects and amplifies this weak signal and converts it into a standard electrical signal, such as a current signal or a voltage signal. The temperature transmitter is generally equipped with an amplifier circuit and a linearization circuit to enhance and adjust the signal output by the sensor. The amplifier circuit can amplify the weak signal to a suitable range for subsequent data processing and transmission. The linearization circuit can correct the nonlinear temperature-voltage or temperature-current characteristics to ensure the accurate correspondence between the output signal and the measured temperature. In addition, the temperature transmitter also has anti-interference ability. In industrial production environments, there are often various interference factors such as electromagnetic interference, temperature gradient, vibration, etc., which will affect the transmission and accuracy of the signal. The temperature transmitter uses shielding technology, filtering technology and other means to reduce external interference and ensure the stability and reliability of the signal. The output signal of the temperature transmitter is generally a standard signal, such as a 4-20mA current signal or a 0-10V voltage signal, which is easy to transmit and process.

[0031] In this embodiment, the first electrical signal and the second electrical signal both refer to standard electrical signals output by the temperature transmitter in the temperature instrument. For example, the first electrical signal may be a first current signal, and the second electrical signal may be a second current signal. For another example, the first electrical signal may be a second voltage signal, and the second electrical signal may be a second voltage signal.

[0032] It can be understood that the temperature transmitter is used to convert the signal output by the temperature measuring element into a standard electrical signal related to the temperature.

[0033] The preset time interval is a time interval set according to actual needs.

[0034] It can be understood that the preset time interval can be understood as a sampling period. For example, the preset time interval is 100 milliseconds (ms), that is, the electrical signal output by the temperature meter is sampled once every 100 ms.

[0035] Step 102: Determine the signal change amount of the temperature meter within a preset time interval according to the first electrical signal and the second electrical signal.

[0036] According to the first electrical signal and the second electrical signal, the amount of signal change of the temperature meter rising or falling within a preset time interval can be determined.

[0037] Step 103, when the signal change is greater than or equal to the preset change threshold, determine that the temperature meter is faulty, stop interlocking control of the steam turbine unit according to the first electrical signal, and output fault prompt information, wherein the fault prompt information is used to indicate that the temperature meter is faulty.

[0038] The preset change threshold is a signal change amount preset according to actual needs.

[0039] In some embodiments, stopping the interlocking control of the steam turbine unit according to the first electrical signal means that the first electrical signal output by the temperature meter no longer triggers the interlocking control of the steam turbine unit. In other words, the first electrical signal output by the temperature meter no longer causes the steam turbine unit to stop. In other words, when the first electrical signal is greater than the high alarm threshold and less than or equal to the high-high alarm threshold, the over-temperature alarm prompt will not be triggered. Correspondingly, when the first electrical signal is greater than the high-high alarm threshold, the steam turbine unit will not be triggered to stop. In this way, the occurrence of erroneous shutdown of the steam turbine unit due to a failure of the temperature meter can be avoided.

[0040] In this embodiment, the fault prompt information can be output in the form of text and / or voice. This embodiment does not specifically limit the output method of the fault prompt information. For example, the fault prompt information can be displayed on the operation interface of the electronic device, where the fault prompt information can be "Temperature meter failure, please check".

[0041] The control method for a steam turbine unit based on a temperature instrument provided in an embodiment of the present application, during the operation of the steam turbine unit, obtains a first electrical signal of a temperature instrument set at the current sampling moment and a second electrical signal at the previous sampling moment, and determines the signal change amount of the temperature instrument at a preset time interval according to the first electrical signal and the second electrical signal, and determines that the temperature instrument has failed when the signal change amount is greater than or equal to the preset change amount threshold, and stops interlocking control of the steam turbine unit according to the first electrical signal, and outputs fault prompt information, wherein the fault prompt information is used to indicate that the temperature instrument has failed. Thus, the temperature instrument is accurately determined to have failed through the signal change amount and the preset change amount threshold, and when the temperature instrument fails, the interlocking control of the steam turbine unit according to the first electrical signal is stopped, thereby avoiding the occurrence of an erroneous shutdown caused by abnormal temperature due to the failure of the temperature instrument, and prompts the corresponding personnel through the fault prompt information that the temperature instrument has failed, so that the corresponding personnel can perform a fault check on the temperature instrument without stopping the steam turbine unit.

[0042] Based on the above embodiment, after acquiring the first electrical signal, it can be determined whether the first electrical signal is within a preset valid range. If the first electrical signal is within the valid range, the signal change amount of the temperature meter at a preset time interval is determined based on the first electrical signal and the second electrical signal.

[0043] In some embodiments, when the first electrical signal is not within the preset effective range, it can be directly determined that the temperature instrument has failed, and the interlocking control of the steam turbine unit according to the first electrical signal is stopped, and a fault prompt information is output, wherein the fault prompt information is used to indicate that the temperature instrument has failed. Thus, in combination with whether the first electrical signal is within the preset effective range, it is accurately determined that the temperature instrument has failed, which can further avoid the occurrence of an erroneous shutdown caused by a temperature instrument failure.

[0044] The first electrical signal is not within the preset effective range, which means that the first electrical signal exceeds the maximum value in the preset effective range, or the first electrical signal is less than the minimum value in the preset effective range.

[0045] For example, the first electrical signal is a current signal AI_IN, the maximum value AI_MAX in the effective range is 20 milliamperes (mA), and the minimum value AI_MIN in the effective range is 4 mA. Correspondingly, if AI_IN is greater than AI_MAX, or AI_IN is less than AI_MIN, it is determined that the temperature instrument has failed, the interlocking control of the steam turbine unit according to the first electrical signal is stopped, and a fault prompt information is output, wherein the fault prompt information is used to indicate that the temperature instrument has failed.

[0046] Figure 2It is a flow chart of a method for controlling a steam turbine unit based on a temperature instrument according to another embodiment of the present application. It should be noted that this embodiment is a further refinement or optimization of the above-mentioned embodiment.

[0047] like Figure 2 As shown, the control method for the steam turbine unit based on the temperature instrument may include:

[0048] Step 201, during the operation of the steam turbine unit, obtain a first electrical signal of a temperature meter installed in the steam turbine unit at a current sampling moment, and obtain a second electrical signal of the temperature meter at a sampling moment before the current sampling moment, wherein the time interval between the current sampling moment and the previous sampling moment is a preset time interval.

[0049] Step 202: Determine the signal change amount of the temperature meter within a preset time interval according to the first electrical signal and the second electrical signal.

[0050] Step 203, when the signal change is greater than or equal to the preset change threshold, determine that the temperature meter is faulty, stop interlocking control of the steam turbine unit according to the first electrical signal, and output fault prompt information, wherein the fault prompt information is used to indicate that the temperature meter is faulty.

[0051] It should be noted that for the specific description of steps 201 to 203, reference may be made to the relevant descriptions in other embodiments, which will not be repeated here.

[0052] Step 204: When the signal change amount is less than a preset change amount threshold, interlocking control is performed on the steam turbine unit according to the first electrical signal.

[0053] In some embodiments, interlocking control of the steam turbine unit according to the first electrical signal may include: outputting an over-temperature alarm prompt when the first electrical signal is greater than a high alarm threshold and less than or equal to a high-alarm threshold, wherein the over-temperature alarm prompt is used to indicate that the temperature of a part of the steam turbine unit monitored by the temperature instrument is too high.

[0054] In some embodiments, the portion of the steam turbine unit monitored by the temperature instrument may be a bearing or a rotor component of the steam turbine unit.

[0055] In some embodiments, when the first electrical signal is greater than a high alarm threshold, the steam turbine unit is controlled to stop.

[0056] It should be noted that the above-mentioned high alarm threshold and high-high alarm threshold are both preset according to actual needs, wherein the high-high alarm threshold in this embodiment is greater than the high alarm threshold.

[0057] It should be noted that when the signal change amount is less than the preset change amount threshold, it means that the temperature instrument is normal. At this time, the steam turbine unit can be interlocked and controlled according to the first electrical signal. In this way, the interlocking control of the steam turbine unit is accurately realized, and the safety of the steam turbine unit can be ensured.

[0058] Figure 3 It is a flow chart of a method for controlling a steam turbine unit based on a temperature instrument according to another embodiment of the present application.

[0059] like Figure 3 As shown, the control method for the steam turbine unit based on the temperature instrument may include:

[0060] Step 301, during the operation of the steam turbine unit, obtain a first electrical signal of a temperature meter installed in the steam turbine unit at a current sampling moment, and obtain a second electrical signal of the temperature meter at a sampling moment before the current sampling moment, wherein the time interval between the current sampling moment and the previous sampling moment is a preset time interval.

[0061] It should be noted that, for the specific description of step 301, reference may be made to the relevant descriptions in other embodiments, which will not be repeated here.

[0062] Step 302, obtaining the status flag of the temperature meter.

[0063] Step 303, when the status flag of the temperature meter is a first value, determine the signal change amount of the temperature meter within a preset time interval according to the first electrical signal and the second electrical signal, wherein the status flag is the first value, indicating that the temperature meter is normal.

[0064] That is, when it is determined that the temperature meter is normal based on the status flag of the temperature meter, the signal change amount of the temperature meter within the preset time interval is determined according to the first electrical signal and the second electrical signal.

[0065] Step 304, determine whether the signal change is greater than or equal to a preset change threshold, if so, execute steps 305 to 307, if not, execute step 308.

[0066] Step 305, determining that the temperature meter fails, and setting a status flag bit corresponding to the temperature meter to a second value, wherein when the status flag bit is the second value, it indicates that the temperature meter fails.

[0067] It should be noted that the first value and the second value are preset values ​​according to actual needs.

[0068] In this embodiment, the first value is 0 and the second value is 1 as an example for exemplary description.

[0069] Step 306: when the status flag is the second value, stop performing interlocking control on the steam turbine unit according to the first electrical signal.

[0070] That is to say, when the status flag is the second value, when the first electrical signal is greater than the high alarm threshold and less than or equal to the high-high alarm threshold, the output temperature over-high alarm prompt will not be triggered. Correspondingly, when the first electrical signal is greater than the high-high alarm threshold, the turbine unit shutdown will not be triggered.

[0071] Step 307: output fault prompt information.

[0072] Step 308: performing interlocking control on the steam turbine unit according to the first electrical signal.

[0073] That is to say, when the first electrical signal is greater than the high alarm threshold and less than or equal to the high-high alarm threshold, the output temperature over-high alarm prompt will be triggered. Correspondingly, when the first electrical signal is greater than the high-high alarm threshold, the turbine unit will be triggered to stop.

[0074] Step 309: when the status flag of the temperature meter is the second value, determine whether the first electrical signal is smaller than the second electrical signal, wherein when the status flag is the second value, it indicates that the temperature meter fails.

[0075] It should be noted that, when the second temperature change determined according to the second electrical signal and the third electrical signal of the temperature instrument at the previous sampling moment is greater than or equal to the preset change threshold, the status flag of the temperature instrument is set to the second value, wherein the third electrical signal represents the electrical signal of the temperature instrument at the sampling moment before the previous sampling moment.

[0076] Step 310 , when the first electrical signal is smaller than the second electrical signal, determine whether the first electrical signal is smaller than or equal to a high-alarm threshold, and if so, execute step 311 .

[0077] The first electrical signal is smaller than the second electrical signal, indicating that the electrical signal output by the temperature meter at the current sampling moment is lower than the electrical signal output at the previous sampling moment.

[0078] In some embodiments, when it is determined that the first electrical signal is greater than the high alarm threshold, the status flag is not modified, that is, the status flag is still the second value. At this time, the interlocking control of the steam turbine unit according to the first electrical signal is still stopped.

[0079] Step 311, setting the state flag to a first value, and performing interlocking control on the steam turbine unit according to the first electrical signal.

[0080] In this embodiment, when it is determined based on the status flag of the temperature meter that the temperature meter has failed when acquiring the first electrical signal at the current moment, and when it is determined based on the comparison between the second electrical signal and the first electrical signal that the first electrical signal is less than the second electrical signal, it is further judged whether the first electrical signal is less than or equal to the high-high alarm threshold, and when it is less than the high-high alarm threshold, it means that although the temperature meter has just failed, it is normal at present. At this time, the status flag of the temperature meter is set to the second value. Correspondingly, when the status flag of the temperature meter is the second value, the steam turbine unit can be interlocked and controlled according to the first electrical signal.

[0081] Combine the following Figure 4 The method of this embodiment is exemplarily described as follows: Figure 4 As shown, the method may include the following steps: Step 401, during the operation of the steam turbine unit, the first electrical signal output by the temperature instrument set in the steam turbine unit at the current sampling time is sent to the input / output (I / O) card of the electronic device. Step 402, the first electrical signal obtained by the I / O card is input to the controller of the electronic device. Step 403, when the controller determines that the signal change amount of the temperature instrument in a preset time interval is less than the preset change amount threshold based on the first electrical signal and the second electrical signal of the temperature instrument at the previous sampling time, it is determined that the temperature instrument has a sudden change, that is, it is determined that the temperature instrument has a fault, and the status flag of the temperature instrument is set to the second value (sate=1). In the case of sate=1, if the first electrical signal is greater than the high alarm threshold and is less than or equal to the high-high alarm threshold, the over-temperature alarm prompt will not be output; if the first electrical signal is greater than the high-high alarm threshold, the steam turbine unit will not stop. Step 404, display fault prompt information. Step 405: When the controller determines that sate=1, and the first electrical signal is less than the second electrical signal, and the first electrical signal is less than the high-high alarm threshold, sate is set to 0. When sate=0, if the first electrical signal is greater than the high-alarm threshold, and less than or equal to the high-high alarm threshold, an over-temperature alarm is output; if the first electrical signal is greater than the high-high alarm threshold, the steam turbine unit is controlled to stop. Step 406: When the controller determines that sate=0, and the signal change is less than or equal to the preset change threshold, if the first electrical signal is greater than the high-high alarm threshold, the steam turbine unit is controlled to stop.

[0082] In this embodiment, by judging the electrical signal output by the temperature meter, it is possible to accurately determine whether the temperature meter has failed, and when a failure occurs, the interlocking control of the turbine unit by the electrical signal of the temperature meter is stopped, thereby avoiding the occurrence of incorrect shutdown of the turbine unit due to a temperature meter failure, contributing to the safe and stable operation of the turbine unit, reducing the labor intensity of operators, and being the basis for energy conservation, consumption reduction, quality improvement and efficiency enhancement.

[0083] Corresponding to the control methods for steam turbine units based on temperature instruments provided in the above-mentioned embodiments, an embodiment of the present application also provides a control device for steam turbine units based on temperature instruments. Since the control device for steam turbine units based on temperature instruments provided in the embodiment of the present application corresponds to the control methods for steam turbine units based on temperature instruments provided in the above-mentioned embodiments, the implementation method of the control method for steam turbine units based on temperature instruments is also applicable to the control device for steam turbine units based on temperature instruments in this embodiment, and will not be described in detail in this embodiment.

[0084] Figure 5 It is a structural schematic diagram of a control device for a steam turbine unit based on a temperature instrument according to an embodiment of the present application.

[0085] like Figure 5 As shown, the control device 500 for the steam turbine unit based on the temperature instrument includes: an acquisition module 501, a determination module 502 and a processing module 503, wherein:

[0086] The acquisition module 501 is used to acquire a first electrical signal of a temperature meter installed in the steam turbine unit at a current sampling moment during the operation of the steam turbine unit, and to acquire a second electrical signal of the temperature meter at a sampling moment before the current sampling moment, wherein the time interval between the current sampling moment and the previous sampling moment is a preset time interval.

[0087] The determination module 502 is used to determine the signal change amount of the temperature meter within a preset time interval according to the first electrical signal and the second electrical signal.

[0088] The processing module 503 is used to determine that the temperature instrument has failed when the signal change is greater than or equal to a preset change threshold, and to stop interlocking control of the turbine unit according to the first electrical signal, and to output fault prompt information, wherein the fault prompt information is used to indicate that the temperature instrument has failed.

[0089] In one embodiment of the present application, the device may further include:

[0090] The control module is used to perform interlocking control on the steam turbine unit according to the first electrical signal when the signal change amount is less than a preset change amount threshold.

[0091] In one embodiment of the present application, the control module is specifically used to: output an over-temperature alarm prompt when the first electrical signal is greater than a high alarm threshold and less than or equal to a high-alarm threshold, wherein the over-temperature alarm prompt is used to indicate that the temperature of a part of the steam turbine unit monitored by the temperature instrument is too high.

[0092] In one embodiment of the present application, the control module is further used to: control the steam turbine unit to stop when the first electrical signal is greater than a high-alarm threshold.

[0093] In one embodiment of the present application, the determination module 502 is specifically used to: when the status flag of the temperature meter is a first value, determine the signal change amount of the temperature meter within a preset time interval based on the first electrical signal and the second electrical signal, wherein the status flag is the first value, indicating that the temperature meter is normal.

[0094] In one embodiment of the present application, the processing module 503 is also used to: before stopping the interlocking control of the steam turbine unit according to the first electrical signal, set the status flag corresponding to the temperature meter to a second value, wherein when the status flag is the second value, it indicates that the temperature meter has a fault.

[0095] In one embodiment of the present application, the device may further include:

[0096] The target processing module is used to determine whether the first electrical signal is less than the second electrical signal when the status flag of the temperature instrument is the second value, wherein when the status flag is the second value, it indicates that the temperature instrument has a fault; when the first electrical signal is less than the second electrical signal, determine whether the first electrical signal is less than or equal to a high-high alarm threshold; when the first electrical signal is less than or equal to the high-high alarm threshold, set the status flag to the first value, and perform interlocking control on the steam turbine unit according to the first electrical signal.

[0097] The control device for a steam turbine unit based on a temperature instrument provided in an embodiment of the present application obtains a first electrical signal of a temperature instrument set at the current sampling moment and a second electrical signal at the previous sampling moment during the operation of the steam turbine unit, and determines the signal change amount of the temperature instrument at a preset time interval according to the first electrical signal and the second electrical signal, and determines that the temperature instrument has failed when the signal change amount is greater than or equal to the preset change amount threshold, and stops interlocking control of the steam turbine unit according to the first electrical signal, and outputs fault prompt information, wherein the fault prompt information is used to indicate that the temperature instrument has failed. Thus, the temperature instrument has failed accurately determined by the signal change amount and the preset change amount threshold, and when the temperature instrument fails, the interlocking control of the steam turbine unit according to the first electrical signal is stopped, thereby avoiding the occurrence of an erroneous shutdown caused by temperature abnormality due to the failure of the temperature instrument, and prompting the corresponding personnel through the fault prompt information that the temperature instrument has failed, so that the corresponding personnel can perform a fault check on the temperature instrument without stopping the steam turbine unit.

[0098] According to an embodiment of the present application, the present application also provides an electronic device.

[0099] Figure 6 It is a structural block diagram of an electronic device according to an embodiment of the present application.

[0100] like Figure 6 As shown, the electronic device 600 includes: a memory 610, a processor 620, and computer instructions stored in the memory 610 and executable on the processor 620.

[0101] When the processor 620 executes the instruction, the control method for the steam turbine unit based on the temperature instrument provided in the above embodiment is implemented.

[0102] Furthermore, the electronic device 600 further includes:

[0103] The communication interface 630 is used for communication between the memory 610 and the processor 620 .

[0104] The memory 610 is used to store computer instructions that can be executed on the processor 620 .

[0105] The memory 610 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0106] The processor 620 is used to implement the control method of the steam turbine unit based on the temperature instrument of the above embodiment when executing the program.

[0107] If the memory 610, the processor 620 and the communication interface 630 are implemented independently, the communication interface 630, the memory 610 and the processor 620 can be connected to each other through a bus and communicate with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 6 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0108] Optionally, in a specific implementation, if the memory 610, the processor 620 and the communication interface 630 are integrated on a chip, the memory 610, the processor 620 and the communication interface 630 can communicate with each other through an internal interface.

[0109] The processor 620 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0110] On the other hand, an embodiment of the present application provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the method for controlling a steam turbine unit based on a temperature instrument disclosed in an embodiment of the present application is implemented.

[0111] Another aspect of the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the method for controlling a steam turbine unit based on a temperature instrument in the embodiment of the present application.

[0112] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0113] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0114] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A method for controlling a steam turbine unit based on a temperature instrument, characterized in that: The method comprises: During the operation of the steam turbine unit, a first electrical signal of a temperature meter provided on the steam turbine unit at a current sampling moment is obtained, and a second electrical signal of the temperature meter at a sampling moment before the current sampling moment is obtained, wherein the time interval between the current sampling moment and the previous sampling moment is a preset time interval; Determining a signal change amount of the temperature meter within the preset time interval according to the first electrical signal and the second electrical signal; When the signal change is greater than or equal to a preset change threshold, it is determined that the temperature instrument has failed, and interlocking control of the steam turbine unit according to the first electrical signal is stopped, and fault prompt information is output, wherein the fault prompt information is used to indicate that the temperature instrument has failed.

2. The method according to claim 1, characterized in that The method further comprises: When the signal change amount is less than a preset change amount threshold, interlocking control is performed on the steam turbine unit according to the first electrical signal.

3. The method according to claim 2, characterized in that The interlocking control of the steam turbine unit according to the first electrical signal comprises: When the first electrical signal is greater than the high alarm threshold and less than or equal to the high alarm threshold, an over-temperature alarm prompt is output, wherein the over-temperature alarm prompt is used to indicate that the temperature of a part of the steam turbine unit monitored by the temperature instrument is too high.

4. The method according to claim 3, characterized in that The interlocking control of the steam turbine unit according to the first electrical signal further includes: When the first electrical signal is greater than the high alarm threshold, the steam turbine unit is controlled to stop.

5. The method according to any one of claims 1 to 4, characterized in that The step of determining the signal change amount of the temperature meter within the preset time interval according to the first electrical signal and the second electrical signal includes: When the status flag of the temperature meter is a first value, the signal change amount of the temperature meter within the preset time interval is determined according to the first electrical signal and the second electrical signal, wherein the status flag is the first value, indicating that the temperature meter is normal.

6. The method according to claim 5, characterized in that Before stopping the interlocking control of the steam turbine unit according to the first electrical signal, the method further includes: The status flag bit corresponding to the temperature meter is set to a second value, wherein when the status flag bit is the second value, it indicates that the temperature meter fails.

7. The method according to claim 5, characterized in that The method further comprises: When the status flag of the temperature meter is a second value, determining whether the first electrical signal is smaller than the second electrical signal, wherein when the status flag is the second value, it indicates that the temperature meter fails; When the first electrical signal is smaller than the second electrical signal, determining whether the first electrical signal is smaller than or equal to a high alarm threshold; When the first electrical signal is less than or equal to the high alarm threshold, the state flag is set to the first value, and interlocking control is performed on the steam turbine unit according to the first electrical signal.

8. A control device for a steam turbine unit based on a temperature instrument, characterized in that: The device comprises: An acquisition module, used for acquiring a first electrical signal of a temperature meter provided on the steam turbine unit at a current sampling moment during the operation of the steam turbine unit, and acquiring a second electrical signal of the temperature meter at a sampling moment before the current sampling moment, wherein the time interval between the current sampling moment and the previous sampling moment is a preset time interval; A determination module, configured to determine a signal change amount of the temperature meter within the preset time interval according to the first electrical signal and the second electrical signal; A processing module is used to determine that the temperature instrument has failed when the signal change is greater than or equal to a preset change threshold, and to stop interlocking control of the steam turbine unit according to the first electrical signal, and to output fault prompt information, wherein the fault prompt information is used to indicate that the temperature instrument has failed.

9. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method according to any one of claims 1 to 7 when executing the computer program.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

11. A computer program product, characterized in that The invention comprises a computer program, which implements the method according to any one of claims 1 to 7 when being executed by a processor.

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