A method and system for temperature monitoring and control of power equipment

Abstract

This invention discloses a method and system for temperature monitoring and control of power equipment, relating to the field of power equipment temperature monitoring and control technology. The method includes the following specific steps: installing a temperature sensor at a corresponding location within the power equipment; real-time acquisition of internal temperature data from the power equipment and monitoring of temperature data changes, while simultaneously acquiring internal temperature data based on a synchronous acquisition model; filtering the temperature change data, processing and analyzing the temperature data, and adjusting the acquisition frequency of the temperature sensor based on a temperature data acquisition frequency model; and adjusting the internal temperature of the power equipment based on a temperature control model according to the changes in internal temperature data. This invention can further improve the accuracy of temperature data acquisition based on a synchronous acquisition model, and, in conjunction with a temperature data acquisition frequency model, allows the temperature sensor's acquisition frequency to change with temperature variations, thereby adaptively adjusting the acquisition frequency.

Description

Technical Field

[0001] This invention relates to the field of temperature monitoring and control technology for power equipment, and particularly to a method and system for temperature monitoring and control of power equipment. Background Technology

[0002] With the development of the power system, in order to better utilize and ensure the safety of electricity use, it is usually necessary to use power equipment. Power equipment refers to the general term for various electrical equipment and facilities used in power generation, transmission, transformation, distribution and consumption, such as power generation equipment, transmission equipment, transformation equipment, distribution equipment, consumption equipment, reactive power compensation equipment and power control and protection equipment.

[0003] Currently, a large amount of heat is often generated during the operation of power equipment. As a result of the increased heat, the temperature of the power equipment rises. Prolonged high temperatures not only affect the operating efficiency of the power equipment but also its service life. Therefore, it is often necessary to use corresponding cooling mechanisms to reduce the temperature.

[0004] Existing cooling mechanisms are mostly used in conjunction with temperature sensors. The temperature sensors collect and monitor the temperature, and then the cooling mechanism cools down. However, existing temperature sensors may transmit inaccurate temperature data due to inherent problems. In addition, the sampling frequency is usually set manually and cannot be adaptively adjusted according to changes in the internal temperature of the power equipment. When the sampling frequency is too low, it is easy to fail to accurately reflect temperature changes. When the sampling frequency is too high, it is easy to generate a large amount of data, which increases the computing load and the difficulty of analysis. To address this, we propose a method and system for temperature monitoring and control of power equipment. Summary of the Invention

[0005] The purpose of this invention is to provide a method and system for temperature monitoring and control of power equipment. This method can further improve the accuracy of temperature data acquisition based on a synchronous acquisition model. At the same time, in conjunction with a temperature data acquisition frequency model, the acquisition frequency of the temperature sensor changes with the temperature, thereby adaptively adjusting the acquisition frequency.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] In a first aspect, the present invention provides a method for temperature monitoring and control of a power device, comprising the following specific steps:

[0008] Step 1: Based on the internal structural distribution of the power equipment, install the temperature sensor in the corresponding part of the power equipment;

[0009] Step 2: Collect temperature data inside the power equipment in real time and monitor temperature changes. At the same time, collect temperature data inside the power equipment based on the synchronous acquisition model and then transmit the temperature data to the back-end terminal.

[0010] Step 3: Filter the temperature change data to remove abnormal and interference information, process and analyze the temperature data, and adjust the acquisition frequency of the temperature sensor based on the temperature data acquisition frequency model.

[0011] Step 4: Based on the changes in temperature data inside the power equipment, adjust the internal temperature of the power equipment according to the temperature control model.

[0012] Step 5: Store the temperature data, temperature control data, and basic parameter data of the power equipment, and form a historical database.

[0013] Preferably, the temperature data acquisition frequency model is as follows:

[0014] The temperature sensor is configured with two-stage stepped acquisition modes, which are set as the first-stage and second-stage acquisition modes in ascending order of acquisition frequency. The threshold between the first-stage and second-stage acquisition modes is set to A. The temperature data acquired by the temperature sensor is denoted as t, and the temperature data acquired by the temperature sensor for the nth time is denoted as t_n. n The distance from the nth temperature sensor to the last collected temperature data is set to t. n-1 Then t n and t n-1 Substituting into the determination formula, we obtain the determination factor Y. n Then determine Y n Is it in a high-growth state, when Y n <A, and Y n In a non-high growth state, temperature data is collected according to the first-stage data acquisition mode. When Y... n <A, and Y n During a period of high growth, temperature data is collected using the second-tier data acquisition mode. When A ≤ Y n Regardless of Y n If the temperature is in a high-growth state, then collect temperature data according to the second-tier data collection mode.

[0015] Preferably, the determination formula is: Y n =t n *(t) n / t n-1 ), where t n Let t be the temperature data collected in the nth time. n-1 Let t be the temperature data collected in the (n-1)th time.

[0016] Preferably, the determination of Y n Whether it is in a high-growth state is as follows:

[0017] Temperature data t collected by the temperature sensor n-1 and t n Substituting into the determination formula, we obtain the determination factor Y. n Then, the temperature data t collected by the temperature sensor n-2 and t n-1 Substituting into the determination formula, we obtain the determination factor Y. n-1 When α*Y n-1 ≤Y n When, then determine Y n为 High growth state, where the value of α ranges from 1.1 to 1.5.

[0018] Preferably, the temperature control model contains the following specific details:

[0019] A three-tiered temperature control mode is set, with the first, second, and third tiered temperature control modes set sequentially according to the temperature control intensity from smallest to largest. The switching threshold between the first and second tiered temperature control modes is set to J, and the switching threshold between the second and third tiered temperature control modes is set to K. When the collected t < J, the first tiered temperature control mode is used; when J ≤ t ≤ K, the second tiered temperature control mode is used; and when K < t, the third tiered temperature control mode is used.

[0020] Preferably, the specific content of installing the temperature sensor in the corresponding part of the power device in step one is: installing the temperature sensor in the thermocouple, resistance temperature detector, generator or transformer part of the power device.

[0021] Preferably, the synchronous acquisition model has the following specific features:

[0022] Each corresponding part of the power equipment is equipped with a primary temperature sensor and a backup temperature sensor. When the primary temperature sensor collects temperature data for the fifth time, the backup temperature sensor will simultaneously collect temperature data once. If the error between the temperature data collected by the primary temperature sensor and the temperature data collected by the backup temperature sensor is within ±2 degrees, the current collection mode of the primary and backup temperature sensors will be maintained. If the error between the temperature data collected by the primary temperature sensor and the temperature data collected by the backup temperature sensor exceeds ±2 degrees, then when the primary temperature sensor collects temperature data for the third time, the backup temperature sensor will simultaneously collect temperature data. If the error between the temperature data collected by the primary temperature sensor and the temperature data collected by the backup temperature sensor is within ±2 degrees, the current collection mode of the primary and backup temperature sensors will be maintained. If the error between the temperature data collected by the primary temperature sensor and the temperature data collected by the backup temperature sensor exceeds ±2 degrees, then only the primary temperature sensor or the backup temperature sensor will be used.

[0023] Preferably, the first-step temperature control mode is natural heat dissipation;

[0024] The second-tier temperature control mode is specifically air cooling.

[0025] The third-tier temperature control mode is specifically water cooling.

[0026] Preferably, the method further includes pre-setting a temperature safety threshold for the power device, which is set to M. When the collected M≤t, an alarm will be issued to prompt manual emergency handling. The alarm method is specifically one of the following: an audible and visual alarm or a text message alarm.

[0027] Secondly, the present invention provides a system for monitoring and controlling the temperature of a power equipment, which implements the method for monitoring and controlling the temperature of a power equipment as described above, the system comprising:

[0028] Temperature data acquisition module is used to collect temperature information from different parts of the power equipment;

[0029] The temperature data transmission module is used to amplify and filter the weak signal output by the temperature data acquisition module, convert the analog signal into a digital signal, and transmit the processed temperature data to the processing module.

[0030] The processing module is used to process, analyze, and judge the received temperature data, issue control commands, and communicate and coordinate with other modules.

[0031] The control execution module executes the corresponding temperature control operations based on the control instructions issued by the processing module;

[0032] The data storage module is used to store temperature monitoring data, control operation records, and system parameter setting information.

[0033] The technical effects and advantages of this invention are as follows:

[0034] (1) By adjusting the acquisition frequency of the temperature sensor based on the temperature data acquisition frequency model, it is possible to perform low-frequency acquisition when the temperature of the power device is not high or the temperature change is not obvious, so as to avoid generating a large amount of data and increasing the computing load and analysis difficulty. It is also possible to perform high-frequency acquisition when the temperature of the power device is high or the temperature change is obvious, so as to understand the temperature inside the power device in a timely and accurate manner and thus carry out temperature control. This design can change the temperature data acquisition frequency with the temperature change of the power device, and has a certain degree of adaptability. It can reduce the computing load and analysis difficulty when the power device is at a relatively safe temperature. At the same time, it can collect the temperature data of the power device in a timely manner after the temperature of the power device rises or the temperature change is obvious.

[0035] (2) Through the synchronous acquisition model, the temperature data can be collected normally using common temperature sensors, and then synchronously acquired using backup temperature sensors, thereby forming a data comparison, avoiding large errors in temperature data acquisition due to the abnormality of the temperature sensor itself, and thus further improving the accuracy of temperature data acquisition. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of a method for temperature monitoring and control of a power device according to the present invention.

[0037] Figure 2 This is a schematic diagram of a temperature monitoring and control system for an electric power device according to the present invention. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] This invention provides, for example Figure 1 The method for temperature monitoring and control of a power device, as shown, includes the following specific steps:

[0040] Step 1: Based on the internal structural distribution of the power equipment, install the temperature sensor in the corresponding part of the power equipment;

[0041] Step 2: Collect temperature data inside the power equipment in real time and monitor temperature changes. At the same time, collect temperature data inside the power equipment based on the synchronous acquisition model and then transmit the temperature data to the back-end terminal.

[0042] Step 3: Filter the temperature change data to remove abnormal and interference information, process and analyze the temperature data, and adjust the acquisition frequency of the temperature sensor based on the temperature data acquisition frequency model.

[0043] Step 4: Based on the changes in temperature data inside the power equipment, adjust the internal temperature of the power equipment according to the temperature control model.

[0044] Step 5: Store the temperature data, temperature control data, and basic parameter data of the power equipment to form a historical database. Install temperature sensors at appropriate locations within the power equipment to collect temperature data in real time, simultaneously monitoring changes in internal temperature. Based on a synchronous acquisition model, the temperature sensors collect temperature data, which is then filtered, processed, and analyzed. The acquisition frequency of the temperature sensors is adjusted based on a temperature data acquisition frequency model to enable low-frequency acquisition when the power equipment temperature is not high or temperature changes are not significant, avoiding the generation of large amounts of data and the resulting increase in computing power. This design reduces the load and analysis difficulty of power equipment, enabling high-frequency data acquisition even when the temperature is high or fluctuates significantly. This allows for timely and accurate understanding of the internal temperature of the power equipment, facilitating temperature control. Based on the changes in internal temperature data, a temperature control model is used to adjust the internal temperature of the power equipment. This design allows the temperature data acquisition frequency to change with the temperature of the power equipment, exhibiting a degree of adaptability. It reduces the computational load and analysis difficulty when the power equipment is at a relatively safe temperature, while also enabling timely acquisition of temperature data after the temperature rises or changes significantly, thus facilitating timely temperature control.

[0045] Furthermore, the specific details of the temperature data acquisition frequency model are as follows: The temperature sensor is configured with two levels of stepped acquisition modes, which are set as the first-level acquisition mode and the second-level acquisition mode in ascending order of acquisition frequency. The threshold between the first-level and second-level acquisition modes is set to A. The temperature data acquired by the temperature sensor is then set to t, and the temperature data acquired by the temperature sensor for the nth time is set to tn. n The distance from the nth temperature sensor to the last collected temperature data is set to t. n-1 Then t n and t n-1Substituting into the determination formula, we obtain the determination factor Y. n Then determine Y n Is it in a high-growth state, when Y n <A, and Y n In a non-high growth state, temperature data is collected according to the first-stage data acquisition mode. When Y... n <A, and Y n During a period of high growth, temperature data is collected using the second-tier data acquisition mode. When A ≤ Y n Regardless of Y n Whether it is in a high growth state, temperature data is collected according to the second-tier acquisition mode. By setting the temperature data acquisition frequency model, the temperature sensor can adaptively adjust the acquisition frequency of temperature data according to the temperature change inside the power device. This can minimize the load on computing power and the difficulty of analysis when the power device is at a safe temperature, and can also collect temperature data in a timely and accurate manner when the temperature of the power device increases or changes significantly.

[0046] Furthermore, the determination formula is: Y n =t n *(t) n / t n-1 ), where t n Let t be the temperature data collected in the nth time. n-1 Let t be the temperature data collected in the (n-1)th time.

[0047] Furthermore, determine Y n Whether it is in a high-growth state is as follows: The temperature data t collected by the temperature sensor... n-1 and t n Substituting into the determination formula, we obtain the determination factor Y. n Then, the temperature data t collected by the temperature sensor n-2 and t n-1 Substituting into the determination formula, we obtain the determination factor Y. n-1 When α*Y n-1 ≤Y n When, then determine Y n为 High growth state, where the value of α ranges from 1.1 to 1.5.

[0048] Set a first-level acquisition mode and a second-level acquisition mode, where the threshold between the first-level acquisition mode and the second-level acquisition mode is set to A, and the value of A is 50. Then, collect t. n t n-1 and t n-2 Temperature data is recorded sequentially as 60 degrees, 50 degrees, and 45 degrees. The values ​​60, 50, and 45 are then used as the basis for the determination formula, Y.n =60*(60 / 50) yields the decision factor Y n The value is 72. Substituting 50 and 45 into the determination formula, we get Y. n-1 The value is 55, at which point Y n If the value is greater than A, and α is set to 1.3, determine Y. n In the high-growth state, the temperature sensor adopts the second-stage acquisition mode, in which the numerical calculation only takes the value before the decimal point.

[0049] Furthermore, the specific details of the temperature control model are as follows: A three-tiered temperature control mode is set, with the first-tier, second-tier, and third-tiered temperature control modes set sequentially according to the temperature control intensity from smallest to largest. The switching threshold between the first-tier and second-tiered temperature control modes is set as J, and the switching threshold between the second-tier and third-tiered temperature control modes is set as K. When the collected t < J, the first-tiered temperature control mode is used; when J ≤ t ≤ K, the second-tiered temperature control mode is used; and when K < t, the third-tiered temperature control mode is used. J is specifically set to 30 degrees Celsius, and K is specifically set to 50 degrees Celsius. When the temperature data t collected by the temperature sensor is < 30 degrees Celsius, the first-tiered temperature control mode is used; when the temperature data is 30 ≤ t ≤ 50 degrees Celsius, the second-tiered temperature control mode is used; and when 50 < t, the third-tiered temperature control mode is used.

[0050] Furthermore, the specific content of installing temperature sensors in the corresponding parts of the power equipment in step one is as follows: temperature sensors are installed in the thermocouples, resistance temperature detectors, generators or transformers of the power equipment to facilitate monitoring of the temperature of key parts of the power equipment.

[0051] Furthermore, the specific details of the synchronous data acquisition model are as follows: Each corresponding part of the power equipment is equipped with a primary temperature sensor and a backup temperature sensor. When the primary temperature sensor collects temperature data every fifth time, the backup temperature sensor simultaneously collects temperature data once. If the error between the temperature data collected by the primary temperature sensor and the synchronously collected temperature data by the backup temperature sensor is within ±2 degrees Celsius, the current acquisition method of the primary and backup temperature sensors is maintained. If the error between the temperature data collected by the primary temperature sensor and the synchronously collected temperature data by the backup temperature sensor exceeds ±2 degrees Celsius, then every third time the primary temperature sensor collects temperature data, the backup temperature sensor simultaneously collects temperature data. If the error between the temperature data collected by the primary temperature sensor and the synchronously collected temperature data by the backup temperature sensor is within ±2 degrees Celsius, the current primary temperature sensor is maintained. The temperature data acquisition method for the primary and backup temperature sensors is as follows: if the temperature data acquired by the primary temperature sensor and the temperature data acquired synchronously by the backup temperature sensor exceed ±2 degrees, then the primary or backup temperature sensor is switched to be used alone. When the temperature acquired by the primary temperature sensor on the fifth time is 30 degrees, the backup temperature sensor acquires the temperature once synchronously. If the temperature is between 28 and 32 degrees, then the backup temperature sensor acquires the temperature once synchronously every fifth acquisition by the primary temperature sensor. If the data acquired by the backup temperature sensor is not between 28 and 32 degrees, then the backup temperature sensor acquires the temperature once synchronously every third acquisition by the primary temperature sensor. If the error still exceeds ±2 degrees, then it is determined which sensor is malfunctioning, and then the system is switched to use either the primary or backup temperature sensor alone. Manual inspection can also be performed to ensure the accuracy of temperature data acquisition.

[0052] Furthermore, the first-stage temperature control mode is specifically natural heat dissipation;

[0053] The second-tier temperature control mode is specifically air cooling.

[0054] The third-tier temperature control mode is specifically water cooling.

[0055] Furthermore, the method also includes pre-setting a safety threshold for the temperature of the power device, which is set to M. When the collected M≤t, an alarm will be issued to prompt manual emergency handling. The alarm method is either an audible and visual alarm or a text message alarm, so that an alarm can be issued in time when the temperature inside the power device exceeds the safety threshold M, thereby facilitating timely handling.

[0056] This invention provides, for example Figure 2 The system shown implements the above-described method for monitoring and controlling the temperature of a power equipment. The system includes:

[0057] Temperature data acquisition module is used to collect temperature information from different parts of the power equipment;

[0058] The temperature data transmission module is used to amplify and filter the weak signal output by the temperature data acquisition module, convert the analog signal into a digital signal, and transmit the processed temperature data to the processing module.

[0059] The processing module is used to process, analyze, and judge the received temperature data, issue control commands, and communicate and coordinate with other modules.

[0060] The control execution module executes the corresponding temperature control operations based on the control instructions issued by the processing module;

[0061] The data storage module is used to store temperature monitoring data, control operation records, and system parameter setting information.

[0062] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for temperature monitoring and control of a power equipment, characterized in that, The specific steps include the following: Step 1: Based on the internal structural distribution of the power equipment, install the temperature sensor in the corresponding part of the power equipment; Step 2: Collect temperature data inside the power equipment in real time and monitor temperature changes. At the same time, collect temperature data inside the power equipment based on the synchronous acquisition model and then transmit the temperature data to the back-end terminal. Step 3: Filter the temperature change data to remove abnormal and interference information. Process and analyze the temperature data, and adjust the temperature sensor's acquisition frequency based on the temperature data acquisition frequency model. The specific content of the temperature data acquisition frequency model is as follows: The temperature sensor is configured with two-stage stepped acquisition modes, which are set as the first-stage and second-stage acquisition modes in ascending order of acquisition frequency. The threshold between the first-stage and second-stage acquisition modes is set to A. The temperature data acquired by the temperature sensor is denoted as t, and the temperature data acquired by the temperature sensor for the nth time is denoted as t_n. n The distance from the nth temperature sensor to the last collected temperature data is set to t. n-1 Then t n and t n-1 Substituting into the determination formula, we obtain the determination factor Y. n Then determine Y n Is it in a high-growth state, when Y n <A, and Y n In a non-high growth state, temperature data is collected according to the first-stage data acquisition mode. When Y... n <A, and Y n During a period of high growth, temperature data is collected using the second-tier data acquisition mode. When A ≤ Y n Regardless of Y n Whether it is in a high-growth state, temperature data is collected according to the second-tier data acquisition mode, and the determination formula is: Y n =t n *(t) n / t n-1 ), where t n Let t be the temperature data collected in the nth time. n-1 The temperature data t is collected for the (n-1)th time. Determine Y n Whether it is in a high-growth state is as follows: Temperature data t collected by the temperature sensor n-1 and t n Substituting into the determination formula, we obtain the determination factor Y. n Then, the temperature data t collected by the temperature sensor n-2 and t n-1 Substituting into the determination formula, we obtain the determination factor Y. n-1 When α*Y n-1 ≤Y n When, then determine Y n This represents a high-growth state, where α ranges from 1.1 to 1.

5. Step 4: Based on the changes in temperature data inside the power equipment, adjust the internal temperature of the power equipment according to the temperature control model. Step 5: Store the temperature data, temperature control data, and basic parameter data of the power equipment, and form a historical database.

2. The method for temperature monitoring and control of a power device according to claim 1, characterized in that, The specific details of the temperature control model are as follows: A three-tiered temperature control mode is set, with the first, second, and third tiered temperature control modes set sequentially according to the temperature control intensity from smallest to largest. The switching threshold between the first and second tiered temperature control modes is set to J, and the switching threshold between the second and third tiered temperature control modes is set to K. When the collected t < J, the first tiered temperature control mode is used; when J ≤ t ≤ K, the second tiered temperature control mode is used; and when K < t, the third tiered temperature control mode is used.

3. The method for temperature monitoring and control of a power device according to claim 1, characterized in that, The specific content of installing the temperature sensor in the corresponding part of the power equipment in step one is as follows: install the temperature sensor in the thermocouple, resistance temperature detector, generator or transformer part of the power equipment.

4. The method for temperature monitoring and control of a power device according to claim 1, characterized in that, The specific details of the synchronous acquisition model are as follows: Two temperature sensors are installed at each corresponding part of the power equipment. One is designated as the primary temperature sensor, and the other as a backup temperature sensor. Every fifth time the primary temperature sensor collects temperature data for the corresponding part of the power equipment, the backup temperature sensor simultaneously collects data for the same part. If the difference between the fifth temperature data collected by the primary sensor and the current synchronous temperature data collected by the backup temperature sensor is within ±2 degrees Celsius, the process continues. If the temperature data error exceeds ±2 degrees, the backup temperature sensor will simultaneously collect the temperature data of the corresponding part of the power device once every third time the commonly used temperature sensor collects the temperature data of the corresponding part of the power device. If the error between the temperature data collected by the commonly used temperature sensor on the third time and the temperature data collected by the backup temperature sensor on the current time is within ±2 degrees, the backup temperature sensor will continue to collect the temperature data of the corresponding part of the power device once every third time the commonly used temperature sensor collects the temperature data of the corresponding part of the power device. If the error between the temperature data collected by the commonly used temperature sensor on the third time and the temperature data collected by the backup temperature sensor on the current time exceeds ±2 degrees, then either the commonly used temperature sensor or the backup temperature sensor will be used separately.

5. The method for temperature monitoring and control of a power device according to claim 2, characterized in that, The first-stage temperature control mode is specifically natural heat dissipation; The second-tier temperature control mode is specifically air cooling. The third-tier temperature control mode is specifically water cooling.

6. The method for temperature monitoring and control of a power device according to claim 5, characterized in that, The method also includes pre-setting a temperature safety threshold for the power device, which is set to M. When the collected M≤t, an alarm will be issued to prompt manual emergency handling. The alarm method is either an audible and visual alarm or a text message alarm.

7. A system for monitoring and controlling the temperature of a power equipment, comprising the method for monitoring and controlling the temperature of a power equipment as described in any one of claims 1 to 6, characterized in that, The system includes: Temperature data acquisition module is used to collect temperature information from different parts of the power equipment; The temperature data transmission module is used to amplify and filter the weak signal output by the temperature data acquisition module, convert the analog signal into a digital signal, and transmit the processed temperature data to the processing module. The processing module is used to process, analyze, and judge the received temperature data, issue control commands, and communicate and coordinate with other modules. The control execution module executes the corresponding temperature control operations based on the control instructions issued by the processing module; The data storage module is used to store temperature monitoring data, control operation records, and system parameter setting information.

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