Method and system for monitoring, regulating and controlling temperature of power device

Abstract

The invention discloses a method and system for monitoring, regulating and controlling the temperature of an electric power device, and relates to the technical field of temperature monitoring, regulating and controlling of electric power devices, and the method comprises the following specific steps: installing a temperature sensor at a corresponding part of the electric power device; temperature data in the power device are collected in real time, the temperature data change condition is monitored, and meanwhile the temperature data in the power device are collected based on the synchronous collection 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 performing temperature regulation on the internal temperature of the power device based on the temperature regulation and control model according to the change condition of the temperature data in the power device. According to the invention, the accuracy of temperature data acquisition can be further improved based on the synchronous acquisition model, and the acquisition frequency of the temperature sensor changes along with the change of the temperature in cooperation with the temperature data acquisition frequency model, so that the acquisition frequency is adaptively adjusted.

Description

Technical Field

[0001] The present invention relates to the technical field of temperature monitoring and control of electric power devices, and in particular to a method and system for temperature monitoring and control of electric power devices. Background Art

[0002] With the development of the power system, in order to better use electricity and ensure electricity safety, it is usually necessary to cooperate with power devices. Power devices refer 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, power consumption equipment, reactive power compensation equipment and power control and protection equipment.

[0003] At present, a large amount of heat is often generated during the operation of power devices. Due to the increase in heat, the temperature of the power equipment increases. Long-term high temperature will not only affect the operating efficiency of the power device, but also affect its service life. Therefore, it is often necessary to cooperate with corresponding cooling mechanisms for cooling.

[0004] Most existing cooling mechanisms are used in conjunction with temperature sensors, which collect and monitor the temperature and then cool the cooling mechanism. However, in actual use, the temperature data transmitted by existing temperature sensors may not be accurate due to their own problems. At the same time, the collection frequency is generally set manually and cannot be adaptively adjusted according to the changes in the internal temperature of the power device. When the collection frequency is too low, it is easy to fail to accurately reflect the temperature changes. When the collection frequency is too high, it is easy to generate a large amount of data, which increases the computing load and the difficulty of analysis. For this reason, we propose a method and system for temperature monitoring and control of power devices. Summary of the Invention

[0005] The purpose of the present invention is to provide a method and system for temperature monitoring and control of an electric power device. Through this method, the accuracy of temperature data acquisition can be further improved 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 change, thereby adaptively adjusting the acquisition frequency.

[0006] To achieve the above object, the present invention provides the following technical solutions: In a first aspect, the present invention provides a method for monitoring and controlling the temperature of an electric power device, comprising the following specific steps: Step 1: Install the temperature sensor at the corresponding position of the power device according to the internal structure distribution of the power device; Step 2: Real-time temperature data is collected inside the power device, and changes in the temperature data are monitored. Simultaneously, the temperature data inside the power device is collected based on a synchronous acquisition model, and then the temperature data is transmitted to the backend terminal. Step 3: Filter the temperature change data to remove abnormal information 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; Step 4: According to the change of the temperature data in the power device, the temperature inside the power device is adjusted based on the temperature control model; Step 5: Store the temperature data, temperature control data and basic parameter data of the power device and form a historical database.

[0007] Preferably, the temperature data acquisition frequency model is specifically as follows: The temperature sensor is set to have a two-step acquisition mode, and is set to the first step acquisition mode and the second step acquisition mode in order from small to large acquisition frequency. The threshold between the first step acquisition mode and the second step acquisition mode is set to A. Then the temperature data collected by the temperature sensor is set to t, and the temperature data collected by the temperature sensor for the nth time is set to t n , the temperature sensor is set to the temperature data collected n times before as t n-1 , then t n and t n-1 Substitute into the determination formula to obtain the determination factor Y n , then judge Y n Is it a high growth state? n <A, and Y n In the non-high growth state, the temperature data is collected according to the first step collection mode. n <A, and Y n In a high growth state, the temperature data is collected according to the second step collection mode. When A≤Y n Regardless of Y n Whether it is in a high growth state, at this time, temperature data is collected according to the second-step collection mode.

[0008] Preferably, the determination formula is: Y n , =t n *(t n / t n-1 ), where t n is the temperature data collected for the nth time, t n-1 is the temperature data t collected for the n-1th time.

[0009] Preferably, the judgment Y n Whether it is a high growth state is as follows: The temperature data collected by the temperature sensor t n-1 and t n Substitute into the determination formula to obtain the determination factor Yn , and then the temperature data collected by the temperature sensor t n-2 and t n-1 Substitute into the determination formula to obtain the determination factor Y n-1 , when α*Y n-1 ≤Y n When Y n为 High growth state, where the value of α ranges from 1.1 to 1.5.

[0010] Preferably, the specific contents of the temperature control model are as follows: A three-step temperature control mode is set, and the first-step temperature control mode, the second-step temperature control mode and the third-step temperature control mode are set in sequence from small to large according to the temperature control intensity, and the switching threshold between the first-step temperature control mode and the second-step temperature control mode is set to J, and the switching threshold between the second-step temperature control mode and the third-step temperature control mode is set to K. When the collected t is less than J, the first-step temperature control mode is performed. When J≤t≤K, the second-step temperature control mode is performed. When K<t, the third-step temperature control mode is performed.

[0011] Preferably, the specific content of installing the temperature sensor at the corresponding position of the power device in step 1 is: installing the temperature sensor at the thermocouple, thermal resistor, generator or transformer position of the power device.

[0012] Preferably, the specific content of the synchronous acquisition model is as follows: It is assumed that each corresponding part of the power device is provided with a common temperature sensor and a backup temperature sensor. When the common temperature sensor collects temperature data for the fifth time, the backup temperature sensor will synchronously collect temperature data once. When the error data of the temperature data collected by the common temperature sensor and the temperature data collected synchronously by the backup temperature sensor is within ±2 degrees, the current common temperature sensor and backup temperature sensor collection mode is maintained. When the error data of the temperature data collected by the common temperature sensor and the temperature data collected synchronously by the backup temperature sensor exceeds ±2 degrees, at this time, the common temperature sensor collects temperature data for the third time, the backup temperature sensor will synchronously collect temperature data. When the error data of the temperature data collected by the common temperature sensor and the temperature data collected synchronously by the backup temperature sensor is within ±2 degrees, the current common temperature sensor and backup temperature sensor collection mode is maintained. When the temperature data collected by the common temperature sensor and the temperature data collected synchronously by the backup temperature sensor exceeds ±2 degrees, the common temperature sensor or the backup temperature sensor is switched to be used separately.

[0013] Preferably, the first step temperature control mode is natural heat dissipation; The second-level temperature control mode is air cooling; The third-level temperature control mode is water cooling.

[0014] Preferably, the method further includes pre-setting a temperature safety threshold of the power device and setting it to M. When the collected M≤t, an alarm will be issued to prompt manual emergency processing. The alarm mode is specifically one of an audible and visual prompt or a text message prompt.

[0015] In a second aspect, the present invention provides a system for monitoring and controlling the temperature of an electric power device, which implements the method for monitoring and controlling the temperature of an electric power device as described above, and the system comprises: Temperature data acquisition module, used to collect temperature information of different parts of the power device; 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 instructions, and communicate and coordinate with other modules; The control execution module executes the corresponding temperature control operation according to 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.

[0016] Technical effects and advantages of the present invention: (1) By adjusting the acquisition frequency of the temperature sensor based on the temperature data acquisition frequency model, low-frequency acquisition can be performed when the temperature of the power device is not high or the temperature change is not obvious, avoiding the generation of a large amount of data, which increases the computing load and the difficulty of analysis. It can also be performed when the temperature of the power device is high or the temperature change is more obvious, so as to timely and accurately understand the temperature inside the power device and perform temperature control. This design can change the temperature data acquisition frequency as the temperature of the power device changes, has a certain degree of adaptability, and can reduce the computing load and the difficulty of analysis when the power device is at a relatively safe temperature. At the same time, it can also timely acquire the temperature data of the power device after the temperature of the power device rises or the temperature changes significantly; (2) Through the synchronous acquisition model, the common temperature sensor can be used to collect temperature data normally, and then the spare temperature sensor can be used for synchronous acquisition, thereby forming a data comparison, avoiding large errors in temperature data collection due to abnormalities in the temperature sensor itself, thereby further improving the accuracy of temperature data collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1Schematic diagram of a method for temperature monitoring and control of an electric power device according to the present invention.

[0018] Figure 2 This is a schematic diagram of a system for temperature monitoring and control of an electric power device according to the present invention. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] The present invention provides Figure 1 A method for monitoring and controlling the temperature of an electric power device is shown, comprising the following specific steps: Step 1: Install the temperature sensor at the corresponding position of the power device according to the internal structure distribution of the power device; Step 2: Real-time temperature data is collected inside the power device, and changes in the temperature data are monitored. Simultaneously, the temperature data inside the power device is collected based on a synchronous acquisition model, and then the temperature data is transmitted to the backend terminal. Step 3: Filter the temperature change data to remove abnormal information 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; Step 4: According to the change of the temperature data in the power device, the temperature inside the power device is adjusted based on the temperature control model; Step 5. Store the temperature data, temperature control data and basic parameter data of the power device and form a historical database; install the temperature sensor at a reasonable position in the power device, and then collect the temperature data in the power device in real time, and monitor the changes in the temperature data inside the power device at the same time, and based on the synchronous acquisition model, make the temperature sensor collect the temperature data in the power device, and then filter the temperature change data, process and analyze the temperature data, and adjust the acquisition frequency of the temperature sensor based on the temperature data acquisition frequency model. When the temperature of the power device is not high or the temperature change is not obvious, low-frequency acquisition can be performed to avoid generating a large amount of data, which will increase computing power. The load and its analysis difficulty can also be reduced by high-frequency acquisition when the temperature of the power device is high or the temperature changes more obviously, so as to timely and accurately understand the temperature inside the power device, and then perform temperature control. Then, according to the changes in the temperature data inside the power device, the internal temperature of the power device is adjusted based on the temperature control model. The design can change the temperature data acquisition frequency as the temperature of the power device changes, and has certain adaptability. It can reduce the computing load and its analysis difficulty when the power device is at a relatively safe temperature. At the same time, it can also collect the temperature data of the power device in time after the temperature of the power device rises or the temperature changes significantly, so as to facilitate timely temperature control.

[0021] Furthermore, the specific content of the temperature data acquisition frequency model is as follows: the temperature sensor is set to have a two-step acquisition mode, and the acquisition frequency is set to the first step acquisition mode and the second step acquisition mode in descending order, wherein the threshold between the first step acquisition mode and the second step acquisition mode is set to A, and then the temperature data collected by the temperature sensor is set to t, and the temperature data collected by the temperature sensor for the nth time is set to t n , the temperature sensor is set to the temperature data collected n times before as t n-1 , then t n and t n-1 Substitute into the determination formula to obtain the determination factor Y n , then judge Y n Is it a high growth state? n <A, and Y n In the non-high growth state, the temperature data is collected according to the first step collection mode. n <A, and Y n In a high growth state, the temperature data is collected according to the second step collection mode. When A≤Y n Regardless of Y nWhether it is in a high growth state, in this case, temperature data is collected according to the second-step collection mode. By setting the temperature data collection frequency model, the temperature sensor's collection frequency of temperature data can be adaptively adjusted as the temperature in the power device changes. This can minimize the load on computing power and the difficulty of analysis when the power device is at a safe temperature. It can also collect temperature data in a timely and accurate manner when the temperature of the power device increases or the temperature changes significantly.

[0022] Furthermore, the judgment formula is: n , =t n *(t n / t n-1 ), where t n is the temperature data collected for the nth time, t n-1 is the temperature data t collected for the n-1th time.

[0023] Furthermore, we can judge Y n Whether it is a high growth state is as follows: the temperature data collected by the temperature sensor t n-1 and t n Substitute into the determination formula to obtain the determination factor Y n , and then the temperature data collected by the temperature sensor t n-2 and t n-1 Substitute into the determination formula to obtain the determination factor Y n-1 , when α*Y n-1 ≤Y n When Y n为 High growth state, where the value of α ranges from 1.1 to 1.5.

[0024] Set the first step acquisition mode and the second step acquisition mode, where the threshold between the first step acquisition mode and the second step acquisition mode is set to A, and the value of A is 50, and then collect t n , t n-1 and t n-2 Temperature data is recorded as 60 degrees, 50 degrees and 45 degrees in sequence, and the values ​​60, 50 and 45 are taken, and then 60 and 50 are substituted into the judgment formula, Y n =60*(60 / 50) to get the determination factor Y n is 72, substitute 50 and 45 into the determination formula, and we get Y n-1 is 55, then Y n Greater than A, and set α to 1.3, judge Y n For high growth status, the temperature sensor adopts the second-step acquisition mode, in which the numerical calculation only takes the value before the decimal point.

[0025] Furthermore, the specific content of the temperature control model is as follows: a three-step temperature control mode is set, and the first-step temperature control mode, the second-step temperature control mode and the third-step temperature control mode are set in sequence from small to large according to the temperature control intensity, and the switching threshold between the first-step temperature control mode and the second-step temperature control mode is set to J, and the switching threshold between the second-step temperature control mode and the third-step temperature control mode is set to K. When the collected t<J, the first-step temperature control mode is performed. When J≤t≤K, the second-step temperature control mode is performed. When K<t, the third-step temperature control mode is performed. J is set to 30 degrees and K is set to 50 degrees. When the temperature data collected by the temperature sensor is t<30 degrees, the first-step temperature control mode is adopted. When the temperature data is 30≤t≤50, the second-step temperature control mode is adopted. When 50<t, the third-step temperature control mode is adopted.

[0026] Furthermore, the specific content of installing the temperature sensor at the corresponding position of the power device in step 1 is: installing the temperature sensor at the thermocouple, thermal resistor, generator or transformer of the power device to facilitate monitoring the temperature of the key parts of the power device.

[0027] Furthermore, the specific contents of the synchronous acquisition model are as follows: it is assumed that each corresponding part of the power device is provided with a common temperature sensor and a backup temperature sensor. When the common temperature sensor collects temperature data for the fifth time, the backup temperature sensor will collect temperature data synchronously. When the error data between the temperature data collected by the common temperature sensor and the temperature data collected synchronously by the backup temperature sensor is within ±2 degrees, the current common temperature sensor and backup temperature sensor acquisition mode are maintained. When the error data between the temperature data collected by the common temperature sensor and the temperature data collected synchronously by the backup temperature sensor exceeds ±2 degrees, at this time, the common temperature sensor collects temperature data for the third time, the backup temperature sensor will collect temperature data synchronously. When the error data between the temperature data collected by the common temperature sensor and the temperature data collected synchronously by the backup temperature sensor is within ±2 degrees, the current common temperature is maintained. The temperature sensor and backup temperature sensor collection method: when the temperature data collected by the common temperature sensor and the temperature data collected synchronously by the backup temperature sensor exceed ±2 degrees, the common temperature sensor or the backup temperature sensor will be switched to use separately. When the common temperature sensor collects the temperature of 30 degrees for the fifth time, the backup temperature sensor will collect the temperature synchronously once. If it is between 28 and 32 degrees, the common temperature sensor will still collect the temperature every fifth time and the backup temperature sensor will collect the temperature synchronously once. If the data collected by the backup temperature sensor is not between 28 and 32 degrees, the common temperature sensor will collect the temperature every third time and the backup temperature sensor will collect the temperature synchronously once. If the error still exceeds ±2 degrees, analyze which sensor has a problem, and then directly switch to using the common temperature sensor or the backup temperature sensor alone. Manual inspection can also be performed to ensure the accuracy of temperature data collection.

[0028] Furthermore, the first-step temperature control mode is specifically natural heat dissipation; The second-level temperature control mode is air cooling; The third-level temperature control mode is water cooling.

[0029] Furthermore, the method also includes pre-setting a temperature safety threshold of the power device and setting it to M. When the collected M≤t, an alarm will be issued to prompt manual emergency processing. The alarm method is specifically one of the two: sound and light prompts or text message prompts. After the temperature in the power device exceeds the safety threshold M, an alarm can be issued in time, thereby facilitating timely processing.

[0030] The present invention provides Figure 2 A system for monitoring and controlling the temperature of an electric power device is shown, which implements the above-mentioned method for monitoring and controlling the temperature of an electric power device. The system includes: Temperature data acquisition module, used to collect temperature information of different parts of the power device; 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 instructions, and communicate and coordinate with other modules; The control execution module executes the corresponding temperature control operation according to 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.

[0031] Finally, it should be noted that the above 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 aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for monitoring and controlling the temperature of an electric power device, characterized in that: The specific steps include: Step 1: Install the temperature sensor at the corresponding position of the power device according to the internal structure distribution of the power device; Step 2: Real-time temperature data is collected inside the power device, and changes in the temperature data are monitored. Simultaneously, the temperature data inside the power device is collected based on a synchronous acquisition model, and then the temperature data is transmitted to the backend terminal. Step 3: Filter the temperature change data to remove abnormal information 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; Step 4: According to the change of the temperature data in the power device, the temperature inside the power device is adjusted based on the temperature control model; Step 5: Store the temperature data, temperature control data and basic parameter data of the power device and form a historical database.

2. The method for monitoring and controlling the temperature of an electric power device according to claim 1, wherein: The specific contents of the temperature data acquisition frequency model are as follows: The temperature sensor is set to have a two-step acquisition mode, and is set to the first step acquisition mode and the second step acquisition mode in order from small to large acquisition frequency. The threshold between the first step acquisition mode and the second step acquisition mode is set to A. Then the temperature data collected by the temperature sensor is set to t, and the temperature data collected by the temperature sensor for the nth time is set to t n , the temperature sensor is set to the temperature data collected n times before as t n-1 , then t n and t n-1 Substitute into the determination formula to obtain the determination factor Y n , then judge Y n Is it a high growth state? n <A, and Y n In the non-high growth state, the temperature data is collected according to the first step collection mode. n <A, and Y n In a high growth state, the temperature data is collected according to the second step collection mode. When A≤Y n Regardless of Y n Whether it is in a high growth state, at this time, temperature data is collected according to the second-step collection mode.

3. The method for monitoring and controlling the temperature of an electric power device according to claim 2, characterized in that: The determination formula is: n , =t n *(t n / t n-1 ), where t n is the temperature data collected for the nth time, t n-1 is the temperature data t collected for the n-1th time.

4. The method for monitoring and controlling the temperature of an electric power device according to claim 3, wherein: The judgment Y n Whether it is a high growth state is as follows: The temperature data collected by the temperature sensor t n-1 and t n Substitute into the determination formula to obtain the determination factor Y n , and then the temperature data collected by the temperature sensor t n-2 and t n-1 Substitute into the determination formula to obtain the determination factor Y n-1 , when α*Y n-1 ≤Y n When Y n为 High growth state, where the value of α ranges from 1.1 to 1.

5.

5. The method for monitoring and controlling the temperature of an electric power device according to claim 4, characterized in that: The specific contents of the temperature control model are as follows: A three-step temperature control mode is set, and the first-step temperature control mode, the second-step temperature control mode and the third-step temperature control mode are set in sequence from small to large according to the temperature control intensity, and the switching threshold between the first-step temperature control mode and the second-step temperature control mode is set to J, and the switching threshold between the second-step temperature control mode and the third-step temperature control mode is set to K. When the collected t is less than J, the first-step temperature control mode is performed. When J≤t≤K, the second-step temperature control mode is performed. When K<t, the third-step temperature control mode is performed.

6. The method for monitoring and controlling the temperature of an electric power device according to claim 1, wherein: The specific content of installing the temperature sensor at the corresponding position of the power device in the step 1 is: installing the temperature sensor at the thermocouple, thermal resistor, generator or transformer position of the power device.

7. The method for monitoring and controlling the temperature of an electric power device according to claim 1, characterized in that: The specific contents of the synchronous acquisition model are as follows: It is assumed that each corresponding part of the power device is provided with a common temperature sensor and a backup temperature sensor. When the common temperature sensor collects temperature data for the fifth time, the backup temperature sensor will synchronously collect temperature data once. When the error data of the temperature data collected by the common temperature sensor and the temperature data collected synchronously by the backup temperature sensor is within ±2 degrees, the current common temperature sensor and backup temperature sensor collection mode is maintained. When the error data of the temperature data collected by the common temperature sensor and the temperature data collected synchronously by the backup temperature sensor exceeds ±2 degrees, at this time, the common temperature sensor collects temperature data for the third time, the backup temperature sensor will synchronously collect temperature data. When the error data of the temperature data collected by the common temperature sensor and the temperature data collected synchronously by the backup temperature sensor is within ±2 degrees, the current common temperature sensor and backup temperature sensor collection mode is maintained. When the temperature data collected by the common temperature sensor and the temperature data collected synchronously by the backup temperature sensor exceeds ±2 degrees, the common temperature sensor or the backup temperature sensor is switched to be used separately.

8. The method for monitoring and controlling the temperature of an electric power device according to claim 5, characterized in that: The first-step temperature control mode is specifically natural heat dissipation; The second-level temperature control mode is air cooling; The third-level temperature control mode is water cooling.

9. The method for monitoring and controlling the temperature of an electric power device according to claim 8, characterized in that: The method also includes pre-setting a temperature safety threshold of the power device and setting it to M. When the collected M≤t, an alarm will be issued to prompt manual emergency processing. The alarm method is specifically one of an audio and visual prompt or a text message prompt.

10. A system for monitoring and controlling the temperature of an electric power device, which implements the method for monitoring and controlling the temperature of an electric power device according to any one of claims 1 to 9, characterized in that: The system comprises: Temperature data acquisition module, used to collect temperature information of different parts of the power device; 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 instructions, and communicate and coordinate with other modules; The control execution module executes the corresponding temperature control operation according to 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.

Images