Infrared monitoring device for hydroelectric excitation field suppression switch contact and use method

Abstract

The invention provides a hydroelectric excitation field suppression switch contact infrared monitoring device and a use method, and relates to the field suppression switch monitoring technology field, a non-contact infrared temperature measurement sensor is installed at the bottom in an excitation system field suppression switch cabinet and is used for measuring the temperature of a field suppression switch main contact; the temperature measurement object is a visible static contact or moving contact of the field suppression switch; the temperature measuring device is arranged on the de-excitation switch cabinet door and is used for displaying the temperature measured by the non-contact infrared temperature measuring sensor in real time; the power plant monitoring system filters interference information through a digital filtering processing technology, and prevents acquisition of short-time strong-interference temperature data. According to the scheme, the personal casualty safety risk caused by manual temperature measurement of the field suppression switch is avoided, the workload of manual temperature measurement is canceled, the problem that temperature anomaly is difficult to monitor in real time due to poor contact of the main contact of the field suppression switch is solved, the capability of an operator to find the temperature anomaly of the field suppression switch in advance is improved, and the working efficiency is improved. And the operation stability and reliability of the large generator set are ensured.

Description

Technical Field

[0001] The present application relates to the technical field of demagnetization switch monitoring, and in particular to an infrared monitoring device for contacts of a hydropower excitation demagnetization switch and a method of using the device. Background Art

[0002] At present, most domestic power plants rely mainly on manual monitoring methods to monitor the temperature of the main contacts of the demagnetization switch of the excitation system. Infrared imagers are used for regular measurements. If the demagnetization switch fails and explodes during measurement, there will be a great risk of personal injury or death. The temperature of the main contacts of the demagnetization switch of the excitation system cannot be monitored in real time, and the abnormal situation of poor contact of the main contacts of the demagnetization switch cannot be discovered in advance, affecting the safety and stability of the unit operation. Summary of the invention

[0003] The present application aims to solve one of the technical problems in the related art at least to some extent.

[0004] To this end, the first purpose of the present application is to provide an infrared monitoring device for contacts of a hydropower excitation and demagnetization switch.

[0005] The second object of this application is to propose a method.

[0006] The third objective of the present application is to provide an electronic device.

[0007] A fourth objective of the present application is to provide a computer-readable storage medium.

[0008] A fifth object of the present application is to provide a computer program product.

[0009] To achieve the above-mentioned purpose, the first embodiment of the present application proposes an infrared monitoring device for hydropower excitation and demagnetization switch contacts, including a non-contact infrared temperature sensor, a temperature measuring device and a power plant monitoring system, wherein:

[0010] The non-contact infrared temperature sensor is installed at the bottom of the demagnetization switch cabinet of the excitation system and is used to measure the temperature of the main contact of the demagnetization switch. The temperature measurement object is the visible static contact or moving contact of the demagnetization switch;

[0011] The temperature measuring device is installed on the demagnetization switch cabinet door and is used to display the temperature measured by the non-contact infrared temperature sensor in real time;

[0012] The non-contact infrared temperature sensor or the temperature measuring device can send the measured temperature data to the power plant monitoring system in real time, so as to realize real-time temperature monitoring and analysis and temperature alarm;

[0013] The power plant monitoring system is also used to filter out signals with a temperature change rate greater than a preset threshold through digital filtering processing technology to prevent the collection of short-term strong interference temperature data.

[0014] Optionally, the non-contact infrared temperature sensor has the ability to work continuously for a long time;

[0015] The non-contact infrared temperature sensor has anti-electromagnetic interference capability and is suitable for electromagnetic environments where the high DC excitation voltage of the demagnetization switch cabinet of the power plant excitation system is not less than 3000V and the large DC excitation current is not less than 15000A;

[0016] The contactless infrared temperature sensor adopts electromagnetic wave absorption technology and shielding material technology for comprehensive protection, which can prevent interference when the power plant uses Hytera walkie-talkie 1 meter away from the infrared temperature sensor.

[0017] To achieve the above-mentioned purpose, the second embodiment of the present application proposes a method of use, including:

[0018] Install a non-contact infrared temperature sensor at the bottom of the demagnetization switch cabinet of the excitation system, and install a temperature measuring device on the door of the demagnetization switch cabinet;

[0019] Starting the non-contact infrared temperature sensor to perform real-time measurement of the temperature of the main contact of the demagnetization switch;

[0020] The temperature measuring device is used to display the temperature of the main contact of the demagnetization switch in real time, and the measured temperature data is sent to the power plant monitoring system in real time;

[0021] The monitoring system processes the temperature data using a digital filtering technique to filter out interference signals;

[0022] The operating personnel perform fault diagnosis and preventive maintenance based on the filtered temperature data provided by the monitoring system.

[0023] To achieve the above-mentioned purpose, the third aspect of the present application provides an electronic device, including: a processor, and a memory communicatively connected to the processor;

[0024] The memory stores computer-executable instructions;

[0025] The processor executes the computer-executable instructions stored in the memory to implement the method as described in any one of the second aspects.

[0026] To achieve the above-mentioned purpose, the fourth aspect embodiment of the present application proposes a computer-readable storage medium, in which computer-readable storage medium is stored computer execution instructions, and when the computer execution instructions are executed by a processor, they are used to implement the method as described in any one of the second aspects.

[0027] To achieve the above-mentioned purpose, the fifth aspect of the present application proposes a computer program product, which implements any method described in the first aspect when the computer program is executed by a processor.

[0028] The infrared monitoring device, apparatus, electronic equipment and storage medium for the contacts of the hydropower excitation demagnetization switch provided in the present application can be applied to the temperature measurement design of the demagnetization switch modification of the excitation system. By adopting non-contact infrared temperature measurement technology, online real-time monitoring of the temperature of the main contacts of the demagnetization switch is realized, avoiding the personal injury and safety risks of manual temperature measurement of the demagnetization switch, eliminating the workload of manual temperature measurement, and solving the problem of temperature abnormalities difficult to monitor in real time due to poor contact of the main contacts of the demagnetization switch. It improves the ability of operating personnel to detect temperature abnormalities of the demagnetization switch in advance, and ensures the stability and reliability of the operation of large-scale generator sets.

[0029] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0031] Figure 1 A schematic diagram of the structure of an infrared monitoring device for contacts of a hydropower excitation and demagnetization switch provided in an embodiment of the present application;

[0032] Figure 2 A flowchart of a method of use provided in an embodiment of the present application. DETAILED DESCRIPTION

[0033] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0034] Because of the extremely high requirements for the safety and reliability of the demagnetization switch of the excitation system of the hydropower unit, almost all large-scale power plants in China have always used foreign demagnetization switches in their excitation systems, such as Switzerland's Sécheron, Germany's ABB, France's Renault, etc. Since there are very few domestically produced demagnetization switches that have been actually used in large hydropower plants in my country, the manufacturing process and quality level of the demagnetization switch need to be greatly improved. In addition, according to practical experience in operation, the failure rate of poor contact of the main contacts of the demagnetization switch is high. The safety and reliability of the demagnetization switch play an important role in the safe, stable and continuous operation of the power plant units. Therefore, it is very important to monitor the temperature of the main contacts of the demagnetization switch of the excitation system to facilitate the timely detection of abnormal temperature rise.

[0035] At present, most domestic power plants rely mainly on manual monitoring methods to monitor the temperature of the main contacts of the demagnetization switch of the excitation system. Infrared imagers are used for regular measurements. If the demagnetization switch fails and explodes during measurement, there will be a great risk of personal injury or death. The temperature of the main contacts of the demagnetization switch of the excitation system cannot be monitored in real time, and the abnormal situation of poor contact of the main contacts of the demagnetization switch cannot be discovered in advance, affecting the safety and stability of the unit operation.

[0036] To address this problem, the present application provides an infrared monitoring device for contacts of a hydropower excitation and demagnetization switch. Figure 1 This is a schematic diagram of the structure of an infrared monitoring device for hydropower excitation and demagnetization switch contacts provided in an embodiment of the present application. Figure 1 As shown, the infrared monitoring device for the contacts of the hydropower excitation and demagnetization switch proposed in the present application includes a non-contact infrared temperature sensor 1, a temperature measuring device 2 and a power plant monitoring system 3.

[0037] In an embodiment of the present application, a contactless infrared temperature sensor is installed at the bottom of the demagnetization switch cabinet of the excitation system, and is used to measure the temperature of the main contacts of the demagnetization switch. The temperature measurement distance is not less than 1m, and the temperature measurement object is the visible static contact or moving contact of the demagnetization switch.

[0038] Furthermore, in the embodiment of the present application, the non-contact infrared temperature measurement sensor 1 has the ability to work continuously for a long time after being powered.

[0039] Furthermore, the contactless infrared temperature sensor 1 has the ability to resist electromagnetic interference and is suitable for the electromagnetic environment of the demagnetization switch cabinet of the power plant excitation system with a high DC excitation voltage of not less than 3000V and a large DC excitation current of not less than 15000A.

[0040] Furthermore, the contactless infrared temperature sensor 1 adopts multiple technologies such as electromagnetic wave absorption technology and shielding material technology for comprehensive protection, which can effectively prevent interference when the power plant uses Hytera walkie-talkie (the frequency of the transmitted radio frequency signal is about 446MHz) 1 meter away from the infrared temperature sensor.

[0041] In the embodiment of the present application, the temperature measuring device 2 is installed on the door of the demagnetization switch cabinet, and is used to display in real time the temperature of the main contacts of the demagnetization switch measured by the contactless infrared temperature sensor, which is convenient for observation and use by operating personnel during inspections.

[0042] In addition, the contactless infrared temperature sensor 1 or the temperature measuring device 2 can send the measured temperature data to the power plant monitoring system 3 in real time, realize real-time temperature monitoring and analysis and temperature alarm, and thus promptly remind the operating personnel of the abnormal temperature of the main contact of the demagnetization switch.

[0043] In the embodiment of the present application, the power plant monitoring system 3 is also used to filter out signals whose temperature change rate is greater than a preset threshold through digital filtering processing technology to prevent the collection of short-term strong interference temperature data, thereby improving the accuracy of data sampling.

[0044] It is understandable that the value of the preset threshold needs to be set according to the actual scenario, and this application does not make any specific limitation on this.

[0045] This embodiment provides a method of use. Figure 2 A schematic diagram of a method of use provided in an embodiment of the present application. Figure 2 As shown, the method may include the following steps:

[0046] Step 101, installing a non-contact infrared temperature sensor at the bottom of the demagnetization switch cabinet of the excitation system, and installing a temperature measuring device on the demagnetization switch cabinet door;

[0047] Step 102, starting a non-contact infrared temperature sensor to perform real-time measurement of the temperature of the main contact of the demagnetization switch;

[0048] Step 103, displaying the temperature of the main contact of the demagnetization switch in real time through a temperature measuring device, and sending the measured temperature data to the power plant monitoring system in real time;

[0049] Step 104, the monitoring system processes the temperature data using a digital filtering technique to filter out interference signals;

[0050] Step 105: The operating personnel perform fault diagnosis and preventive maintenance based on the filtered temperature data provided by the monitoring system.

[0051] It should be noted that the functions of the contactless infrared temperature sensor, temperature measuring device and power plant monitoring system involved in the method have been described in detail in the embodiments of the device and will not be elaborated here.

[0052] In order to implement the above embodiments, the present application also proposes an electronic device, comprising: a processor, and a memory communicatively connected to the processor; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory to implement the method provided by the above embodiments.

[0053] In order to implement the above embodiments, the present application also proposes a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the methods provided by the above embodiments.

[0054] In order to implement the above embodiments, the present application also proposes a computer program product, including a computer program, which implements the methods provided by the above embodiments when executed by a processor.

[0055] The collection, storage, use, processing, transmission, provision and disclosure of user personal information involved in this application are in compliance with relevant laws and regulations and do not violate public order and good morals.

[0056] It should be noted that personal information from users should be collected for legitimate and reasonable purposes and should not be shared or sold outside of these legitimate uses. In addition, such collection / sharing should be carried out after receiving the user's informed consent, including but not limited to notifying the user to read the user agreement / user notice and sign the agreement / authorization including authorization of relevant user information before the user uses the function. In addition, any necessary steps should be taken to protect and safeguard access to such personal information data and ensure that others who have access to personal information data comply with its privacy policy and procedures.

[0057] The present application is expected to provide an implementation scheme for users to selectively block the use or access of personal information data. That is, the present disclosure is expected to provide hardware and / or software to prevent or block access to such personal information data. Once the personal information data is no longer needed, the risk can be minimized by limiting data collection and deleting the data. In addition, when applicable, such personal information is de-identified to protect the privacy of the user.

[0058] In the description of the aforementioned embodiments, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0059] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0060] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0061] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute the instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purpose of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.

[0062] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0063] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0064] In addition, each functional unit in each embodiment of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0065] The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A contact infrared monitoring device for a hydropower excitation and demagnetization switch, characterized in that: It includes non-contact infrared temperature sensor, temperature measuring device and power plant monitoring system, among which: The non-contact infrared temperature sensor is installed at the bottom of the demagnetization switch cabinet of the excitation system and is used to measure the temperature of the main contact of the demagnetization switch. The temperature measurement object is the visible static contact or moving contact of the demagnetization switch; The temperature measuring device is installed on the demagnetization switch cabinet door and is used to display the temperature measured by the non-contact infrared temperature sensor in real time; The non-contact infrared temperature sensor or the temperature measuring device can send the measured temperature data to the power plant monitoring system in real time, so as to realize real-time temperature monitoring and analysis and temperature alarm; The power plant monitoring system is also used to filter out signals with a temperature change rate greater than a preset threshold through digital filtering processing technology to prevent the collection of short-term strong interference temperature data.

2. The infrared monitoring device for hydropower excitation and demagnetization switch contacts according to claim 1 is characterized in that: The non-contact infrared temperature sensor has the ability to work continuously for a long time; The non-contact infrared temperature sensor has anti-electromagnetic interference capability and is suitable for electromagnetic environments where the high DC excitation voltage of the demagnetization switch cabinet of the power plant excitation system is not less than 3000V and the large DC excitation current is not less than 15000A; The contactless infrared temperature sensor adopts electromagnetic wave absorption technology and shielding material technology for comprehensive protection, which can prevent interference when the power plant uses Hytera walkie-talkie 1 meter away from the infrared temperature sensor.

3. A method for using the infrared monitoring device for hydropower excitation and demagnetization switch contacts as claimed in any one of claims 1 to 2, characterized in that: include: Install a non-contact infrared temperature sensor at the bottom of the demagnetization switch cabinet of the excitation system, and install a temperature measuring device on the door of the demagnetization switch cabinet; Starting the non-contact infrared temperature sensor to perform real-time measurement of the temperature of the main contact of the demagnetization switch; The temperature measuring device is used to display the temperature of the main contact of the demagnetization switch in real time, and the measured temperature data is sent to the power plant monitoring system in real time; The monitoring system processes the temperature data using a digital filtering technique to filter out interference signals; The operating personnel perform fault diagnosis and preventive maintenance based on the filtered temperature data provided by the monitoring system.

4. An electronic device, characterized in that: include: A processor, and a memory communicatively connected to the processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory to implement the method according to claim 3.

5. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, which are used to implement the method according to claim 3 when executed by a processor.

6. A computer program product, characterized in that The invention comprises a computer program which, when executed by a processor, implements the method as claimed in claim 3.

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