A temperature intelligent control system for skid-mounted integrated electronic control device

Abstract

This invention relates to the field of temperature control technology, and more particularly to an intelligent temperature control system for a skid-mounted integrated electronic control device, comprising: a skid-mounted module, including a skid-mounted substation and a temperature sensor installed inside the enclosure of the skid-mounted substation to collect the internal temperature of the enclosure; a communication module connected to the skid-mounted module, including a signal conversion unit for converting the temperature signal from the temperature sensor into a digital signal; a signal processing module connected to the communication module, including a signal processing unit for sequentially filtering, amplifying, and calibrating the digital signal to output an optimized signal; and a control module connected to the skid-mounted module, the communication module, and the signal processing module, for determining the filtering size of a sliding window based on the transmission response delay of the temperature sensor. This invention improves the temperature control accuracy of the skid-mounted integrated electronic control device.

Description

Technical Field

[0001] This invention relates to the field of temperature control technology, and in particular to a temperature intelligent control system for a skid-mounted integrated electronic control device. Background Technology

[0002] In existing technologies, many devices have high requirements for temperature, humidity, and protection levels. Especially in recent years, with the upgrading of power equipment, high-end and high-precision instruments are widely used in power equipment. These high-precision instruments are located in skid-mounted integrated electrical control devices, so the requirements for the working environment inside the skid are becoming increasingly stringent. With the continuous development of industrial automation and intelligence, skid-mounted integrated electrical control devices have been widely used in many fields such as petroleum, chemical, and power. This type of device integrates multiple functional units such as power distribution, communication, and automatic control into a single skid, and has the advantages of compact structure, small footprint, convenient installation, and strong mobility, which can meet the needs of different on-site working conditions.

[0003] Chinese Patent Publication No. CN107562097A discloses a skid-mounted integrated electrical control device. This device includes: a skid body, a skid roof, a power distribution unit, a communication and UPS unit, an automatic control PLC unit, a lighting unit, an intelligent ventilation, dehumidification, and temperature control system, and an intelligent management and control system. The intelligent management and control system integrates the control unit, display unit, and signal acquisition system. It not only better controls the internal temperature and humidity of the skid by activating different devices based on detected internal temperature and humidity parameters, but also performs targeted detection and control of the electrical parameters, operating status, and transformer temperature of the power distribution units within the skid in real time. It can control the operation of the power distribution units based on the detected real-time data, better ensuring the operational safety and reliability of the power distribution units and the entire skid.

[0004] It is evident that existing technologies have the following problems: communication between the intelligent management and control system and various detection sensors and actuators may be delayed, causing the control system to be unable to acquire temperature data or control the actuators in a timely manner, resulting in a lag in temperature control and affecting the accuracy of control. Summary of the Invention

[0005] To address this issue, the present invention provides a temperature intelligent control system for a skid-mounted integrated electronic control device, which overcomes the problem in the prior art where there may be a delay in communication between the intelligent management control system and various detection sensors and actuators, resulting in the control system being unable to acquire temperature data or control the actuators in a timely manner, causing a lag in temperature control and affecting the accuracy of control.

[0006] To achieve the above objectives, the present invention provides a temperature intelligent control system for a skid-mounted integrated electronic control device, comprising:

[0007] The skid-mounted module includes a skid-mounted substation, a temperature sensor installed inside the enclosure of the skid-mounted substation to collect the internal temperature of the enclosure, and a filter installed inside the enclosure of the skid-mounted substation to filter impurities in the internal air.

[0008] A communication module, which is connected to the skid-mounted module, includes a signal conversion unit for converting the temperature signal of the temperature sensor into a digital signal and a data transmission unit connected to the signal conversion unit for transmitting the digital signal to the processing location.

[0009] The signal processing module, which is connected to the communication module, includes a signal processing unit for sequentially filtering, amplifying, and calibrating the digital signal to output an optimized signal, and a feature extraction unit connected to the signal processing unit for extracting features from the optimized signal to output a feature signal.

[0010] The control module, which is connected to the skid-mounted module, the communication module, and the signal processing module respectively, is used to determine the filtering size of the sliding window based on the transmission response delay of the temperature sensor, or to determine the sampling interval of the internal temperature of the skid-mounted substation enclosure based on the bit error rate of the characteristic signal, and to determine the differential pressure change rate across the filter based on the temperature fluctuation amplitude inside the skid-mounted substation enclosure.

[0011] Furthermore, the control module is used to determine whether the temperature control accuracy of the skid-mounted integrated electronic control device meets the requirements based on the transmission response delay of the temperature sensor. If the transmission response delay of the temperature sensor is longer than the preset first delay, it is determined that the temperature control accuracy of the skid-mounted integrated electronic control device does not meet the requirements.

[0012] Furthermore, the control module is used to preliminarily determine that the stability of the temperature control of the skid-mounted integrated electronic control device does not meet the requirements when the transmission response delay of the temperature sensor is greater than the preset first delay duration and less than or equal to the preset second delay duration, and to determine whether the stability of the temperature control of the skid-mounted integrated electronic control device meets the requirements based on the bit error rate of the characteristic signal.

[0013] Furthermore, the control module is used to increase the filtering size of the sliding window when the transmission response delay of the temperature sensor is greater than the preset second delay.

[0014] The increase in the filtering size of the sliding window is determined by the difference between the transmission response delay of the temperature sensor and a preset second delay.

[0015] Furthermore, the control module is used to determine whether the stability of the temperature control of the skid-mounted integrated electronic control device meets the requirements based on the bit error rate of the characteristic signal. If the bit error rate of the characteristic signal is greater than the preset first bit error rate, it is determined that the stability of the temperature control of the skid-mounted integrated electronic control device does not meet the requirements.

[0016] Furthermore, the control module is used to reduce the sampling interval of the internal temperature of the skid-mounted substation enclosure when the bit error rate of the characteristic signal is greater than the preset first bit error rate and less than or equal to the preset second bit error rate.

[0017] Furthermore, the control module is used to preliminarily determine that the internal environmental stability of the skid-mounted substation does not meet the requirements when the bit error rate of the characteristic signal is greater than the preset second bit error rate, and to determine whether the internal environmental stability of the skid-mounted substation meets the requirements based on the temperature fluctuation range inside the skid-mounted substation.

[0018] Furthermore, the reduction in the sampling interval of the internal temperature of the skid-mounted substation enclosure is determined by the difference between the bit error rate of the characteristic signal and a preset first bit error rate.

[0019] Furthermore, the control module is used to determine whether the internal environmental stability of the skid-mounted substation meets the requirements based on the temperature fluctuation range inside the skid-mounted substation enclosure. If the temperature fluctuation range inside the skid-mounted substation enclosure is greater than the preset fluctuation range, it is determined that the internal environmental stability of the skid-mounted substation enclosure does not meet the requirements, and the pressure difference change rate limit across the filter is reduced.

[0020] Furthermore, the reduction range of the pressure difference change rate limit across the filter is determined by the difference between the temperature fluctuation range inside the skid-mounted substation and the preset fluctuation range.

[0021] Compared with existing technologies, the beneficial effects of this invention are as follows: The system of this invention, by setting up a skid-mounted module, a communication module, a signal processing module, and a control module, adjusts the filtering size of the sliding window according to the transmission response delay of the temperature sensor. Since the sensor may age and its material properties may suffer irreversible damage, during temperature cycling, various materials within the device will generate periodic thermal stress due to thermal expansion and contraction. Different materials have different coefficients of thermal expansion, and when they are combined, this thermal stress becomes more complex. Long-term repeated thermal stress can cause microscopic cracks to form inside the materials. With the increase of the number of cycles, these cracks will gradually expand and connect, leading to a decrease in the accuracy of the collected data and a deterioration in signal quality. It may also damage the integrity of the transmission line, causing signal distortion and attenuation during transmission. The receiving end needs to spend more time and processing resources to correct and restore the signal, thus causing changes in the transmission delay. By increasing the filtering size of the sliding window, more data points can be averaged or weighted averaged, thereby more effectively smoothing the signal, suppressing the influence of random noise, and making the filtered signal closer to the true value. Based on the bit error rate of the characteristic signal, the skid-mounted substation... The sampling interval of the internal temperature of the enclosure is adjusted. Since skid-mounted integrated electronic control devices typically contain various electronic devices and circuits, these devices generate electromagnetic fields during operation. If the electromagnetic shielding measures of the system are not perfect, these electromagnetic fields will interfere with each other, forming electromagnetic noise. Insufficient circuit noise suppression leads to the superposition of random noise in the acquired signal. This random noise will interfere with the normal transmission of the signal. The receiving end needs to spend more time and resources to identify, correct, and process the distorted signal, thus causing changes in the transmission delay. By reducing the sampling interval of the characteristic signal, the signal's anti-noise capability can be effectively improved, the error correction processing time at the receiving end can be reduced, and the transmission delay can be stabilized. The pressure difference change rate limit across the filter is adjusted according to the temperature fluctuation range inside the skid-mounted substation enclosure. After long-term use, the filter will accumulate a lot of dust and impurities, hindering air circulation, reducing the amount of air entering the system, increasing impurities, affecting heat exchange efficiency, and resulting in poor air treatment effect. By reducing the pressure difference change rate limit across the filter, measures can be taken when the filter is only slightly clogged, which helps maintain the stable operation of the system and protects other components from a series of problems caused by filter clogging.

[0022] Furthermore, the system of the present invention adjusts the filtering size of the sliding window by setting a preset first delay duration and a preset second delay duration. Since sensors age after prolonged use, their material properties suffer irreversible damage. During temperature cycling, various materials within the device experience periodic thermal stress due to thermal expansion and contraction. Different materials have different coefficients of thermal expansion, and when combined, this thermal stress becomes more complex. Long-term, repeated thermal stress can cause microscopic cracks within the materials. As the number of cycles increases, these cracks gradually expand and connect, leading to a decrease in the accuracy of the collected data and a deterioration in signal quality. It may also damage the integrity of the transmission line, causing signal distortion and attenuation during transmission. The receiving end needs to spend more time and processing resources to correct and restore the signal, thus causing changes in the transmission delay duration. By increasing the filtering size of the sliding window, more data points can be averaged or weighted averaged, thereby more effectively smoothing the signal, suppressing the influence of random noise, and making the filtered signal closer to the true value, thus improving the temperature control accuracy of the skid-mounted integrated electronic control device.

[0023] Furthermore, the system of the present invention adjusts the sampling interval of the internal temperature of the skid-mounted substation enclosure by setting a preset first bit error rate and a preset second bit error rate. Since there are usually multiple electronic devices and circuits in the skid-mounted integrated electrical control device, these devices will generate electromagnetic fields when they are working. If the electromagnetic shielding measures of the system are not perfect, these electromagnetic fields will interfere with each other and form electromagnetic noise. Insufficient circuit noise suppression will cause random noise to be superimposed on the acquired signal. This random noise will interfere with the normal transmission of the signal. The receiving end needs to spend more time and resources to identify, correct and process the distorted signal, thus causing changes in the transmission delay. By reducing the sampling interval of the characteristic signal, the signal's anti-noise capability can be effectively improved, the error correction processing time of the receiving end can be reduced, and the transmission delay can be stabilized. This further improves the temperature control accuracy of the skid-mounted integrated electrical control device.

[0024] Furthermore, the system described in this invention, by setting a preset fluctuation range, addresses the issue that after long-term use, the filter accumulates a large amount of dust and impurities, hindering airflow, reducing the amount of air entering the system, increasing impurities, affecting heat exchange efficiency, and resulting in poor air treatment performance. By reducing the limit of the pressure difference change rate across the filter, measures can be taken when the filter is only slightly clogged, which helps maintain the stable operation of the system, protects other components from a series of problems caused by filter clogging, and further improves the temperature control accuracy of the skid-mounted integrated electronic control device. Attached Figure Description

[0025] Figure 1This is an overall structural block diagram of the temperature intelligent control system for a skid-mounted integrated electronic control device according to an embodiment of the present invention;

[0026] Figure 2 This is a flowchart illustrating the process of determining the filtering size of the sliding window in the temperature intelligent control system of a skid-mounted electronic control integrated device according to an embodiment of the present invention.

[0027] Figure 3 This is a logic flowchart of the process for determining the sampling interval of the internal temperature of the skid-mounted substation enclosure in the temperature intelligent control system of the skid-mounted integrated electrical control device according to an embodiment of the present invention.

[0028] Figure 4 This is a logic flowchart illustrating the process of determining the rate of change of pressure difference across the filter in the temperature intelligent control system of a skid-mounted integrated electronic control device according to an embodiment of the present invention. Detailed Implementation

[0029] To make the objectives and advantages of the present invention clearer, the present invention will be further described below with reference to embodiments; it should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention.

[0030] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0031] Please see Figure 1 , Figure 2 , Figure 3 as well as Figure 4 The diagrams shown are, respectively, an overall structural block diagram of the temperature intelligent control system for a skid-mounted integrated electronic control device according to an embodiment of the present invention, a logic flowchart of the process for determining the filter size of the sliding window, a logic flowchart of the process for determining the sampling interval of the internal temperature of the skid-mounted substation enclosure, and a logic flowchart of the process for determining the rate of change of the pressure difference across the filter. The present invention provides a temperature intelligent control system for a skid-mounted integrated electronic control device, comprising:

[0032] The skid-mounted module includes a skid-mounted substation, a temperature sensor installed inside the enclosure of the skid-mounted substation to collect the internal temperature of the enclosure, and a filter installed inside the enclosure of the skid-mounted substation to filter impurities in the internal air.

[0033] A communication module, which is connected to the skid-mounted module, includes a signal conversion unit for converting the temperature signal of the temperature sensor into a digital signal and a data transmission unit connected to the signal conversion unit for transmitting the digital signal to the processing location.

[0034] The signal processing module, which is connected to the communication module, includes a signal processing unit for sequentially filtering, amplifying, and calibrating the digital signal to output an optimized signal, and a feature extraction unit connected to the signal processing unit for extracting features from the optimized signal to output a feature signal.

[0035] The control module, which is connected to the skid-mounted module, the communication module, and the signal processing module respectively, is used to determine the filtering size of the sliding window based on the transmission response delay of the temperature sensor, or to determine the sampling interval of the internal temperature of the skid-mounted substation enclosure based on the bit error rate of the characteristic signal, and to determine the differential pressure change rate across the filter based on the temperature fluctuation amplitude inside the skid-mounted substation enclosure.

[0036] Specifically, the optimized signal includes the filtered internal temperature of the skid-mounted substation enclosure, the amplified temperature change rate, and the calibrated temperature gradient.

[0037] Specifically, the characteristic signals include the degree of signal fluctuation, temperature status, and harmonic components.

[0038] Specifically, the filtering size of the sliding window is the number of data points contained in the window used to process temperature data in the sliding window filtering algorithm.

[0039] Specifically, a sliding window involves constructing a "window" containing a fixed number of sampling points, allowing the window to slide point by point across a time series, and calculating the data within the window to reflect the temperature trend or state at the current moment.

[0040] Specifically, the bit error rate of a characteristic signal is the ratio between the number of erroneous bits received by the receiver and the total number of bits transmitted by the transmitter.

[0041] Specifically, the sampling interval for the internal temperature of the skid-mounted substation enclosure is the time interval between two adjacent temperature signal acquisitions.

[0042] Specifically, the temperature fluctuation range inside the enclosure of the skid-mounted substation is the difference between the highest and lowest temperatures within the skid-mounted integrated electrical control device per unit time.

[0043] Specifically, the rate of change of pressure difference across the filter is the change in the pressure difference between the inlet and outlet of the filter per unit time.

[0044] In implementation, the system of this invention, by setting up a skid-mounted module, a communication module, a signal processing module, and a control module, adjusts the filtering size of the sliding window according to the transmission response delay of the temperature sensor. Since the sensor may age and its material properties may suffer irreversible damage, during temperature cycling, various materials within the device will experience periodic thermal stress due to thermal expansion and contraction. Different materials have different coefficients of thermal expansion, and when they are combined, this thermal stress becomes more complex. Long-term repeated thermal stress can cause microscopic cracks to form inside the materials. As the number of cycles increases, these cracks gradually expand and connect, leading to a decrease in the accuracy of the collected data and a deterioration in signal quality. It may also damage the integrity of the transmission line, causing signal distortion and attenuation during transmission. The receiving end needs to spend more time and processing resources to correct and restore the signal, thus causing changes in the transmission delay. By increasing the filtering size of the sliding window, more data points can be averaged or weighted averaged, thereby more effectively smoothing the signal, suppressing the influence of random noise, and making the filtered signal closer to the true value. The internal temperature of the skid-mounted substation enclosure is determined based on the bit error rate of the characteristic signal. The sampling interval is adjusted because skid-mounted integrated electronic control devices typically contain various electronic devices and circuits that generate electromagnetic fields during operation. If the electromagnetic shielding measures of the system are inadequate, these electromagnetic fields will interfere with each other, forming electromagnetic noise. Insufficient circuit noise suppression leads to the superposition of random noise in the acquired signal. This random noise interferes with the normal transmission of the signal, requiring the receiving end to spend more time and resources to identify, correct, and process the distorted signal, thus causing changes in the transmission delay. By reducing the sampling interval of the characteristic signal, the signal's noise immunity can be effectively improved, the error correction processing time at the receiving end can be reduced, and the transmission delay can ultimately be stabilized. The pressure difference change rate limit across the filter is adjusted according to the temperature fluctuation range inside the skid-mounted substation enclosure. After long-term use, the filter will accumulate a large amount of dust and impurities, hindering airflow, reducing the amount of air entering the system, increasing impurities, affecting heat exchange efficiency, and resulting in poor air treatment effect. By reducing the pressure difference change rate limit across the filter, measures can be taken when the filter is only slightly clogged, which helps maintain the stable operation of the system and protects other components from a series of problems caused by filter clogging.

[0045] Specifically, the control module is used to determine whether the temperature control accuracy of the skid-mounted integrated electronic control device meets the requirements based on the transmission response delay of the temperature sensor. If the transmission response delay of the temperature sensor is longer than the preset first delay, it is determined that the temperature control accuracy of the skid-mounted integrated electronic control device does not meet the requirements.

[0046] Specifically, the control module is used to preliminarily determine that the stability of the temperature control of the skid-mounted integrated electronic control device does not meet the requirements when the transmission response delay of the temperature sensor is greater than the preset first delay duration and less than or equal to the preset second delay duration, and to determine whether the stability of the temperature control of the skid-mounted integrated electronic control device meets the requirements based on the bit error rate of the characteristic signal.

[0047] It is understandable that the three intervals divided by the preset first delay duration and the preset second delay duration correspond to three different scenarios:

[0048] The first interval is when the transmission response delay of the temperature sensor is less than or equal to the preset first delay time, which corresponds to the situation where the temperature control accuracy of the skid-mounted integrated electronic control device meets the requirements.

[0049] The second interval is when the transmission response delay of the temperature sensor is greater than the preset first delay time and less than or equal to the preset second delay time. The corresponding situation is as follows: Since there are usually multiple electronic devices and circuits in the skid-mounted integrated electronic control device, these devices will generate electromagnetic fields when they are working. If the electromagnetic shielding measures of the system are not perfect, these electromagnetic fields will interfere with each other and form electromagnetic noise. Insufficient circuit noise suppression will cause random noise to be superimposed on the acquired signal. This random noise will interfere with the normal transmission of the signal. The receiving end needs to spend more time and resources to identify, correct and process the distorted signal, thus causing the transmission delay time to change.

[0050] The third interval is when the transmission response delay of the temperature sensor is longer than the preset second delay. The corresponding situation is as follows: due to the aging of the sensor, the material properties may be irreversibly damaged. During temperature cycling, various materials in the device will generate periodic thermal stress due to thermal expansion and contraction. Different materials have different coefficients of thermal expansion. When they are combined, long-term repeated thermal stress will cause micro-cracks to be generated inside the material. As the number of cycles increases, these cracks will gradually expand and connect, resulting in a decrease in the accuracy of the collected data and a deterioration in signal quality. At the same time, it may also damage the integrity of the transmission line, causing problems such as signal distortion and attenuation during transmission. The receiving end needs to spend more time and processing resources to correct and restore the signal, thus causing a change in the transmission delay.

[0051] Understandably, the preset delay duration can be set according to actual working conditions. The preset delay duration aims to ensure the accuracy and practicality of the test results. Optionally, the preset delay duration is initially set based on the sensor's technical parameters and theoretical analysis. Then, tests are conducted under actual working conditions to observe whether the sensor's response can meet the measurement and control requirements until the optimal measurement and control effect is achieved. For example, the preset first delay duration is generally selected in the range of [0.6s, 1s], and the preset second delay duration is generally selected in the range of [1.1s, 1.5s].

[0052] Preferably, the first delay duration is 0.8s in a preferred embodiment, and the second delay duration is 1.3s in a preferred embodiment.

[0053] Specifically, the control module is used to increase the filtering size of the sliding window when the transmission response delay of the temperature sensor is greater than the preset second delay.

[0054] The increase in the filtering size of the sliding window is determined by the difference between the transmission response delay of the temperature sensor and a preset second delay.

[0055] Specifically, when the difference between the transmission response delay of the temperature sensor and the preset second delay is within 0.2s, the filtering size of the sliding window is increased to 1.2 times the original size. When the difference between the transmission response delay of the temperature sensor and the preset second delay exceeds 0.2, in addition to increasing to 1.2 times the original size, the filtering size of the sliding window increases by 2 points for every 0.1s exceeding the original size. For example, if the difference between the transmission response delay of the temperature sensor and the preset second delay is 0.5s, and the current filtering size of the sliding window is 20 points, the increased filtering size of the sliding window will be 20×1.2+3×2=30 points.

[0056] In implementation, the system of the present invention adjusts the filtering size of the sliding window by setting a preset first delay time and a preset second delay time. Since the sensor may age and the material properties may suffer irreversible damage, during temperature cycling, various materials in the device will generate periodic thermal stress due to thermal expansion and contraction. Different materials have different coefficients of thermal expansion, and when they are combined, this thermal stress becomes more complex. Long-term repeated thermal stress will cause micro-cracks to be generated inside the material. As the number of cycles increases, these cracks will gradually expand and connect, leading to a decrease in the accuracy of the collected data and a deterioration in signal quality. At the same time, it may also damage the integrity of the transmission line, causing problems such as signal distortion and attenuation during transmission. The receiving end needs to spend more time and processing resources to correct and restore the signal, thus causing changes in the transmission delay time. By increasing the filtering size of the sliding window, more data points can be averaged or weighted averaged, thereby smoothing the signal more effectively, suppressing the influence of random noise, making the filtered signal closer to the true value, and improving the temperature control accuracy of the skid-mounted integrated electronic control device.

[0057] Specifically, the control module is used to determine whether the stability of the temperature control of the skid-mounted integrated electronic control device meets the requirements based on the bit error rate of the characteristic signal. If the bit error rate of the characteristic signal is greater than the preset first bit error rate, it is determined that the stability of the temperature control of the skid-mounted integrated electronic control device does not meet the requirements.

[0058] Specifically, the control module is used to reduce the sampling interval of the internal temperature of the skid-mounted substation enclosure when the bit error rate of the characteristic signal is greater than the preset first bit error rate and less than or equal to the preset second bit error rate.

[0059] Specifically, the control module is used to preliminarily determine that the internal environmental stability of the skid-mounted substation does not meet the requirements when the bit error rate of the characteristic signal is greater than the preset second bit error rate, and to determine whether the internal environmental stability of the skid-mounted substation meets the requirements based on the temperature fluctuation range inside the skid-mounted substation.

[0060] It is understandable that the three intervals defined by the preset first bit error rate and the preset second bit error rate correspond to three different scenarios:

[0061] The first interval is where the bit error rate of the characteristic signal is less than or equal to the preset first bit error rate. The corresponding situation is: the stability of the temperature control of the skid-mounted integrated electronic control device meets the requirements.

[0062] The second interval is when the bit error rate of the characteristic signal is greater than the preset first bit error rate and less than or equal to the preset second bit error rate. The corresponding situation is as follows: Since there are usually multiple electronic devices and circuits in the skid-mounted integrated electronic control device, these devices will generate electromagnetic fields when they are working. If the electromagnetic shielding measures of the system are not perfect, these electromagnetic fields will interfere with each other and form electromagnetic noise. Insufficient circuit noise suppression will cause random noise to be superimposed on the acquired signal. This random noise will interfere with the normal transmission of the signal. The receiving end needs to spend more time and resources to identify, correct and process the distorted signal, thus causing the transmission delay time to change.

[0063] The third interval is when the bit error rate of the characteristic signal is greater than the preset second bit error rate. The corresponding situation is that after long-term use, the filter will accumulate a lot of dust and impurities, which will hinder air circulation, reduce the amount of air entering the system, increase the amount of impurities, affect the heat exchange efficiency, and lead to a deterioration in the air treatment effect.

[0064] Understandably, the preset bit error rate can be set according to actual operating conditions. The preset bit error rate aims to ensure the accuracy and usability of the test results. Optionally, the preset bit error rate is calculated by collecting temperature signal data under different time periods and operating conditions, using a selected detection method, and comparing it with the theoretical or expected value. For example, the preset first bit error rate is generally selected within the range of

[10] . -10 10 -8 The preset second bit error rate is generally selected within the range of

[10] . -7 10 -5 ].

[0065] Preferably, the preferred embodiment of the preset first bit error rate is 5 × 10⁻⁶. -9 The preferred embodiment for setting the second bit error rate is 5×10. -6 .

[0066] Specifically, the reduction in the sampling interval of the internal temperature of the skid-mounted substation enclosure is determined by the difference between the bit error rate of the characteristic signal and a preset first bit error rate.

[0067] Specifically, the difference between the bit error rate of the characteristic signal and the preset first bit error rate is within 10. -10 When the sampling interval for the internal temperature of the skid-mounted substation enclosure is reduced to 0.9 times the original value, and the difference between the bit error rate of the characteristic signal and the preset first bit error rate exceeds 10... -10 At that time, based on reducing it to 0.9 times the original value, for every additional 10... -10 The sampling interval for the internal temperature of the skid-mounted substation enclosure is reduced by 2 milliseconds. For example, the difference between the bit error rate of the characteristic signal and the preset first bit error rate is 3 × 10⁻⁶. -10The current sampling interval for the internal temperature of the skid-mounted substation enclosure is 10 milliseconds. The increased sampling interval for the internal temperature of the skid-mounted substation enclosure is 10 × 0.9 - 1 × 2 = 7 milliseconds.

[0068] In practice, the system of the present invention adjusts the sampling interval of the internal temperature of the skid-mounted substation enclosure by setting a preset first bit error rate and a preset second bit error rate. Since there are usually multiple electronic devices and circuits in the skid-mounted integrated electrical control device, these devices will generate electromagnetic fields when they are working. If the electromagnetic shielding measures of the system are not perfect, these electromagnetic fields will interfere with each other and form electromagnetic noise. Insufficient circuit noise suppression will cause random noise to be superimposed on the acquired signal. This random noise will interfere with the normal transmission of the signal. The receiving end needs to spend more time and resources to identify, correct and process the distorted signal, thus causing changes in the transmission delay. By reducing the sampling interval of the characteristic signal, the signal's anti-noise capability can be effectively improved, the error correction processing time of the receiving end can be reduced, and the transmission delay can be stabilized. This further improves the temperature control accuracy of the skid-mounted integrated electrical control device.

[0069] Specifically, the control module is used to determine whether the internal environmental stability of the skid-mounted substation meets the requirements based on the temperature fluctuation range inside the skid-mounted substation enclosure. If the temperature fluctuation range inside the skid-mounted substation enclosure is greater than the preset fluctuation range, it is determined that the internal environmental stability of the skid-mounted substation enclosure does not meet the requirements, and the pressure difference change rate limit across the filter is reduced.

[0070] It is understandable that the two preset fluctuation ranges correspond to two different scenarios:

[0071] The first interval is when the temperature fluctuation inside the enclosure of the skid-mounted substation is less than or equal to the preset fluctuation range, which corresponds to the situation where the stability of the internal environment of the skid-mounted substation enclosure meets the requirements.

[0072] The second range is when the temperature fluctuation inside the skid-mounted substation enclosure is greater than the preset fluctuation range. The corresponding situation is that after long-term use, the filter will accumulate a lot of dust and impurities, which will hinder air circulation, reduce the amount of air entering the system, increase the amount of impurities, affect the heat exchange efficiency, and lead to a deterioration in the air treatment effect.

[0073] Understandably, the preset fluctuation range can be set according to actual working conditions, and the preset fluctuation range aims to ensure the accuracy and practicality of the test results. Optionally, the preset fluctuation range is determined by long-term monitoring and recording of temperature data to understand the temperature fluctuation range and rate of change. For example, the preset fluctuation range is generally selected within the range of [1℃, 3℃].

[0074] Preferably, the preset fluctuation range is 2°C in the preferred embodiment.

[0075] Specifically, the limit value of the differential pressure change rate across the filter is the maximum allowable increase in differential pressure per unit time.

[0076] Specifically, the reduction in the pressure difference change rate limit across the filter is determined by the difference between the temperature fluctuation range inside the skid-mounted substation and a preset fluctuation range.

[0077] Specifically, when the temperature fluctuation range inside the skid-mounted substation enclosure differs from the preset fluctuation range by less than 1°C, the pressure difference change rate limit across the filter is reduced to 0.8 times the original value. When the temperature fluctuation range inside the skid-mounted substation enclosure differs from the preset fluctuation range by more than 1°C, in addition to reducing it to 0.8 times the original value, for every 0.5°C exceeding the preset fluctuation range, the pressure difference change rate limit across the filter is reduced by 0.01 Pa / s. For example, when the temperature fluctuation range inside the skid-mounted substation enclosure differs from the preset fluctuation range by 2°C, the current pressure difference change rate limit across the filter is 0.5 Pa / s, and the reduced pressure difference change rate limit across the filter is 0.5 × 0.8 - 2 × 0.01 = 0.38 Pa / s.

[0078] Specifically, Pa / s is the unit of the pressure difference change rate limit across the filter, and it means Pascals per second.

[0079] In practice, the system described in this invention sets a preset fluctuation range. After long-term use, the filter will accumulate a large amount of dust and impurities, which will hinder air circulation, reduce the amount of air entering the system, increase the amount of impurities, affect the heat exchange efficiency, and lead to a deterioration in air treatment effect. By reducing the limit of the pressure difference change rate across the filter, measures can be taken when the filter is only slightly clogged, which helps to maintain the stable operation of the system, protect other components from a series of problems caused by filter clogging, and further improve the temperature control accuracy of the skid-mounted integrated electronic control device.

[0080] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A temperature intelligent control system for skid-mounted electrically controlled integrated devices, characterized in that, The utility model relates to a temperature control system of skid-mounted electric control integrated device, which comprises a skid-mounted module, a communication module, a signal processing module and a control module. The skid-mounted module comprises a skid-mounted transformer substation, a temperature sensor arranged in the skid-mounted transformer substation for collecting the internal temperature of the skid-mounted transformer substation, and a filter for filtering impurities in the internal air. The communication module is connected to the skid-mounted module and comprises a signal conversion unit for converting the temperature signal of the temperature sensor into a digital signal and a data transmission unit connected to the signal conversion unit for transmitting the digital signal to a processing location. The signal processing module is connected to the communication module and comprises a signal processing unit for sequentially filtering, amplifying and calibrating the digital signal to output an optimized signal and a feature extraction unit connected to the signal processing unit for extracting features from the optimized signal to output a feature signal. The control module is connected to the skid-mounted module, the communication module and the signal processing module, respectively, for determining the filter size of a sliding window according to the transmission response delay time of the temperature sensor, determining the sampling interval of the internal temperature of the skid-mounted transformer substation according to the bit error rate of the feature signal, and determining the pressure difference change rate limit of the filter inlet and outlet according to the temperature fluctuation amplitude of the internal temperature of the skid-mounted transformer substation. When the transmission response delay time of the temperature sensor is greater than a preset first delay time and less than or equal to a preset second delay time, the control module preliminarily determines that the stability of the temperature control of the skid-mounted electric control integrated device does not meet the requirements and determines whether the stability of the temperature control of the skid-mounted electric control integrated device meets the requirements according to the bit error rate of the feature signal. When the bit error rate of the feature signal is greater than a preset second bit error rate, the control module preliminarily determines that the internal environment stability of the skid-mounted transformer substation does not meet the requirements and determines whether the internal environment stability of the skid-mounted transformer substation meets the requirements according to the temperature fluctuation amplitude of the internal temperature of the skid-mounted transformer substation. The control module determines whether the internal environment stability of the skid-mounted transformer substation meets the requirements according to the temperature fluctuation amplitude of the internal temperature of the skid-mounted transformer substation, and if the temperature fluctuation amplitude of the internal temperature of the skid-mounted transformer substation is greater than a preset fluctuation amplitude, it is determined that the internal environment stability of the skid-mounted transformer substation does not meet the requirements, and the pressure difference change rate limit of the filter inlet and outlet is reduced.

2. The temperature intelligent control system for skid-mounted electrically controlled integrated device according to claim 1, characterized in that, When the transmission response delay time of the temperature sensor is greater than the preset second delay time, the control module increases the filter size of the sliding window. The increase amplitude of the filter size of the sliding window is determined by the difference between the transmission response delay time of the temperature sensor and the preset second delay time.

3. The temperature intelligent control system for skid-mounted electrically controlled integrated device according to claim 2, characterized in that, When the bit error rate of the feature signal is greater than a preset first bit error rate and less than or equal to a preset second bit error rate, the control module reduces the sampling interval of the internal temperature of the skid-mounted transformer substation.

4. The temperature intelligent control system for skid-mounted electrically controlled integrated device according to claim 3, characterized in that, The reduction amplitude of the sampling interval of the internal temperature of the skid-mounted transformer substation is determined by the difference between the bit error rate of the feature signal and the preset first bit error rate.

5. The temperature intelligent control system for skid-mounted electrically controlled integrated device according to claim 4, characterized in that, The reduction range of the pressure difference change rate limit value of the filter inlet and outlet is determined by the difference between the temperature fluctuation range inside the box of the skid-mounted substation and the preset fluctuation range. The reduction range of the pressure difference change rate limit value of the filter inlet and outlet is determined by the difference between the temperature fluctuation range inside the box of the skid-mounted substation and the preset fluctuation range.

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