Electrical equipment contact position temperature measurement system based on radio frequency identification technology

Abstract

The invention discloses an electrical equipment contact temperature measurement system based on a radio frequency identification technology. The electrical equipment contact temperature measurement system comprises a temperature measurement nut and a handset which are connected with each other based on the radio frequency technology. Wherein the temperature measuring nut is mounted on specified electrical equipment in the closed high-voltage switch cabinet and is used for performing real-time temperature acquisition on the mounted electrical equipment; and the handset is used for receiving and analyzing the real-time temperature collected by the temperature measuring nut after establishing communication with the temperature measuring nut so as to judge the temperature normality of the electrical equipment. According to the invention, the temperature of the electrical equipment in the closed high-voltage switch cabinet can be monitored in real time and early warned in time.

Description

Technical Field

[0001] The present invention relates to the technical field of power systems, and in particular to a temperature measurement system for electrical equipment contacts based on radio frequency identification technology. Background Art

[0002] The power system is developing rapidly towards the direction of high reliability and high automation level of large power grids, making the level of automation and intelligent monitoring of power grid operation a key issue that is highly valued at home and abroad. With the development of society and the progress of science and technology, people's demand for electricity is increasing day by day, and the power load of high-voltage electrical equipment (such as transformers, switch cabinets, knife switches, etc.) that carry large amounts of electricity is also increasing rapidly. Since the connection point between equipment and equipment is the weakest link in power transmission, the essential problem of this weak link is node heating. As the load increases, the node heats up and forms a vicious cycle, especially temperature rise, expansion, contraction and oxidation, which causes resistance to increase, temperature to rise again, and even lead to accidents.

[0003] The temperature rise of equipment is one of the important parameters to measure the health status of equipment. Monitoring the temperature of important equipment to prevent accidents has been proven to be an effective method. However, conventional high-voltage switchgear mostly adopts a closed structure. The temperature of the heating parts of these electrical equipment often cannot be measured by traditional, manual methods. It is impossible to achieve real-time monitoring and timely warning before an accident occurs, which ultimately leads to damage to electrical equipment and power outages, causing huge economic losses.

[0004] Therefore, in order to solve the above technical problems, a new electrical equipment temperature measurement method is urgently needed, which can monitor the temperature of electrical equipment in closed high-voltage switchgear in real time and provide timely warning. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an electrical equipment contact temperature measurement system based on radio frequency identification technology, which can monitor the temperature of electrical equipment in a closed high-voltage switch cabinet in real time and provide timely warning.

[0006] In order to solve the above technical problems, an embodiment of the present invention provides a temperature measurement system for electrical equipment contacts based on radio frequency identification technology, including a temperature measurement nut and a handheld device interconnected based on radio frequency technology; wherein,

[0007] The temperature measuring nut is installed on the designated electrical equipment in the closed high-voltage switch cabinet and is used for real-time temperature collection of the installed electrical equipment;

[0008] The handheld device is used to receive and analyze the real-time temperature collected by the temperature measuring nut after establishing communication with the temperature measuring nut, so as to determine whether the temperature of the electrical equipment is normal.

[0009] The temperature measuring nut includes a nut body, a patch-type temperature sensor and an RFID tag;

[0010] The nut body is used to be connected to the electrical equipment;

[0011] The patch-type temperature sensor is arranged on the nut body, and is used to collect the temperature transmitted to the nut body by the electrical equipment in real time;

[0012] The RFID tag is arranged on the nut body and connected to the patch-type temperature sensor, and is used to pre-store its own ID number and store the temperature collected by the patch-type temperature sensor in real time;

[0013] The handheld device includes a data processing unit and a signal amplifier and an RFID reader connected thereto; wherein,

[0014] The signal amplifier is used to amplify the radio frequency signal sent by the data processing unit and periodically send it to the RFID tag to activate the RFID tag;

[0015] The RFID reader is used to read the ID number pre-stored on the activated RFID tag and forward it to the data processing unit, and after receiving the verification instruction issued by the data processing unit, establish communication with the activated RFID tag to further read the real-time temperature pre-stored on the RFID tag;

[0016] The data processing unit is used to generate a radio frequency signal and send it to the signal amplifier; and after receiving the ID number stored on the activated RFID tag read by the RFID reader, if it is determined that the received ID number matches one in the preset database, a verification instruction is generated and sent to the RFID reader, and when receiving the real-time temperature stored on the activated RFID tag read by the RFID reader, a comparison is performed in combination with a preset temperature threshold, and further based on the comparison result, the temperature normality of the electrical equipment is judged.

[0017] The handheld device further comprises an early warning unit; wherein the early warning unit is connected to the data processing unit and is used to issue an early warning upon receiving an early warning signal generated when the data processing unit determines that the temperature of the electrical equipment is abnormal.

[0018] Wherein, the handheld device also includes a data register; wherein, the data register is connected to the data processing unit, and is used to store the ID number and real-time temperature pre-stored on the activated RFID tag received by the data processing unit, and store the judgment result of the data processing unit on the normality of the temperature of the electrical equipment.

[0019] The data register is connected to an external online monitoring and analysis background or display terminal via a 485 communication bus, and is also used to synchronously send the ID number and real-time temperature pre-stored on the activated RFID tag, as well as the judgment result, to the online monitoring and analysis background or the display terminal.

[0020] The online monitoring and analysis background or the display terminal achieves data synchronization with the designated distribution transformer monitoring terminal TTU.

[0021] The implementation of the embodiments of the present invention has the following beneficial effects:

[0022] 1. The present invention collects real-time temperature by installing a temperature measuring nut on designated electrical equipment in a closed high-voltage switch cabinet, and after the handheld device establishes communication with the temperature measuring nut, receives the real-time temperature and performs analysis to quickly determine the normality of the temperature of the electrical equipment, thereby being able to monitor the temperature of the electrical equipment in the closed high-voltage switch cabinet in real time;

[0023] 2. The handheld device of the present invention generates a warning signal when the internal data processing unit determines that the temperature of the electrical equipment is abnormal, thereby providing a timely warning of the temperature of the electrical equipment in the closed high-voltage switch cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the present invention.

[0025] Figure 1 A logical structure connection diagram of a temperature measurement system for electrical equipment contacts based on radio frequency identification technology provided by an embodiment of the present invention;

[0026] Figure 2 A schematic structural diagram of a temperature measuring nut and a handheld device in a temperature measuring system for contact points of electrical equipment based on radio frequency identification technology provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] like Figure 1 and Figure 2As shown, in an embodiment of the present invention, a temperature measurement system for electrical equipment contacts based on radio frequency identification technology is proposed, comprising a temperature measurement nut 1 and a handheld device 2 interconnected based on radio frequency technology; wherein,

[0029] The temperature measuring nut 1 is installed on a designated electrical device (not shown) in a closed high-voltage switch cabinet, and is used to collect the real-time temperature of the installed electrical device;

[0030] The handheld device 2 is used to receive and analyze the real-time temperature collected by the temperature measuring nut 1 after establishing communication with the temperature measuring nut 1 to determine whether the temperature of the electrical equipment is normal.

[0031] In the embodiment of the invention, the temperature measuring nut 1 comprises a nut body 11, a patch-type temperature sensor 12 and an RFID tag 13; wherein,

[0032] The nut body 11 is used to connect with the electrical equipment. It is a fixing nut of the electrical equipment, an internal component of the electrical equipment or a simple conducting component. The specific function is designed according to the actual situation. For example, when it is a simple conducting component, it is tied to the electrical equipment by a high temperature resistant tape or a high temperature resistant cable tie.

[0033] The patch-type temperature sensor 12 is arranged on the nut body 11, and is used to collect the temperature transmitted to the nut body 11 by the electrical equipment in real time;

[0034] The RFID tag 13 (which contains an RFID tag antenna) is disposed on the nut body 11 and connected to the patch-type temperature sensor 12, and is used to pre-store its own ID number and store the temperature collected in real time by the patch-type temperature sensor 12;

[0035] The handheld device 2 includes a data processing unit 21 and a signal amplifier 22 and an RFID reader 23 connected thereto; wherein,

[0036] The signal amplifier 22 is used to amplify the radio frequency signal sent by the data processing unit 21 and periodically send it to the RFID tag 13 of the temperature measuring nut 1 to activate the RFID tag 13;

[0037] The RFID reader 23 is used to read the ID number pre-stored on the activated RFID tag 13 and forward it to the data processing unit 21, and after receiving the verification instruction issued by the data processing unit 21, establish communication with the activated RFID tag 13 to further read the real-time temperature pre-stored on the RFID tag 13;

[0038] The data processing unit 21 is used to generate a radio frequency signal and send it to the signal amplifier 22; and after receiving the ID number stored on the activated RFID tag 13 read by the RFID reader 23, if it is determined that the received ID number matches one in the preset database, a verification instruction is generated and sent to the RFID reader 23, and when receiving the real-time temperature stored on the activated RFID tag 13 read by the RFID reader 23, it is compared with the preset temperature threshold, and further based on the comparison result, the temperature normality of the electrical equipment is judged; wherein, if the temperature at a certain moment is greater than the preset temperature threshold, it is determined that the temperature of the electrical equipment at that moment is abnormal; conversely, if the temperature at a certain moment is less than the preset temperature threshold, it is determined that the temperature of the electrical equipment at that moment is normal.

[0039] In order to ensure that the handheld device 2 can not only monitor the temperature in time, but also give a warning in time. Therefore, the handheld device 2 also includes a warning unit 24; wherein the warning unit 24 is connected to the data processing unit 21, and is used to issue a warning when receiving a warning signal generated by the data processing unit 21 when it determines that the temperature of the electrical equipment is abnormal. At the same time, the handheld device 2 also includes a data register 25; wherein the data register 25 is connected to the data processing unit 21, and is used to store the ID number and real-time temperature pre-stored on the activated RFID tag 13 received by the data processing unit 21, and store the judgment result of the data processing unit 21 on the normality of the temperature of the electrical equipment.

[0040] It can be understood that the data register 25 on the handheld device 2 is connected to the external online monitoring and analysis background or display terminal through the 485 communication bus, and is also used to synchronously send the ID number and real-time temperature stored on the activated RFID tag 13, as well as the judgment result, to the online monitoring and analysis background or display terminal. At this time, the online monitoring and analysis background or display terminal synchronizes data with the designated distribution transformer monitoring terminal TTU, and further forwards the data to the distribution transformer monitoring terminal TTU for aggregation and analysis. Then, the distribution transformer monitoring terminal TTU also integrates the data and sends it to the designated server port of the external network, so that personnel can access and view the real-time temperature value of the relevant tested point in the form of a web page through a PC or mobile terminal connected to the external network.

[0041] Implementing the embodiments of the present invention has the following beneficial effects:

[0042] 1. The present invention collects real-time temperature by installing a temperature measuring nut on designated electrical equipment in a closed high-voltage switch cabinet, and after the handheld device establishes communication with the temperature measuring nut, receives the real-time temperature and performs analysis to quickly determine the normality of the temperature of the electrical equipment, thereby being able to monitor the temperature of the electrical equipment in the closed high-voltage switch cabinet in real time;

[0043] 2. The handheld device of the present invention generates a warning signal when the internal data processing unit determines that the temperature of the electrical equipment is abnormal, thereby providing a timely warning of the temperature of the electrical equipment in the closed high-voltage switch cabinet.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A temperature measurement system for electrical equipment contacts based on radio frequency identification technology, characterized in that: It includes a temperature measuring nut and a handheld device interconnected based on radio frequency technology; wherein, The temperature measuring nut is installed on the designated electrical equipment in the closed high-voltage switch cabinet and is used for real-time temperature collection of the installed electrical equipment; The handheld device is used to receive and analyze the real-time temperature collected by the temperature measuring nut after establishing communication with the temperature measuring nut, so as to determine whether the temperature of the electrical equipment is normal.

2. The temperature measurement system for electrical equipment contacts based on radio frequency identification technology according to claim 1, characterized in that: The temperature measuring nut includes a nut body, a patch-type temperature sensor and an RFID tag; wherein, The nut body is used to be connected to the electrical equipment; The patch-type temperature sensor is arranged on the nut body, and is used to collect the temperature transmitted to the nut body by the electrical equipment in real time; The RFID tag is arranged on the nut body and connected to the patch-type temperature sensor, and is used to pre-store its own ID number and store the temperature collected by the patch-type temperature sensor in real time; The handheld device includes a data processing unit and a signal amplifier and an RFID reader connected thereto; wherein, The signal amplifier is used to amplify the radio frequency signal sent by the data processing unit and periodically send it to the RFID tag to activate the RFID tag; The RFID reader is used to read the ID number pre-stored on the activated RFID tag and forward it to the data processing unit, and after receiving the verification instruction issued by the data processing unit, establish communication with the activated RFID tag to further read the real-time temperature pre-stored on the RFID tag; The data processing unit is used to generate a radio frequency signal and send it to the signal amplifier; and after receiving the ID number stored on the activated RFID tag read by the RFID reader, if it is determined that the received ID number matches one in the preset database, a verification instruction is generated and sent to the RFID reader, and when receiving the real-time temperature stored on the activated RFID tag read by the RFID reader, a comparison is performed in combination with a preset temperature threshold, and further based on the comparison result, the temperature normality of the electrical equipment is judged.

3. The temperature measurement system for electrical equipment contacts based on radio frequency identification technology as claimed in claim 2, characterized in that: The handheld device also includes an early warning unit; wherein the early warning unit is connected to the data processing unit and is used to issue an early warning upon receiving an early warning signal generated by the data processing unit when it determines that the temperature of the electrical equipment is abnormal.

4. The temperature measurement system for electrical equipment contacts based on radio frequency identification technology as claimed in claim 3, characterized in that: The handheld device also includes a data register; wherein the data register is connected to the data processing unit and is used to store the ID number and real-time temperature pre-stored on the activated RFID tag received by the data processing unit, and store the judgment result of the data processing unit on the normality of the temperature of the electrical equipment.

5. The temperature measurement system for electrical equipment contacts based on radio frequency identification technology as claimed in claim 4, characterized in that: The data register is connected to the external online monitoring and analysis background or display terminal through the 485 communication bus, and is also used to synchronously send the pre-stored ID number and real-time temperature on the activated RFID tag and the judgment result to the online monitoring and analysis background or the display terminal.

6. The temperature measurement system for electrical equipment contacts based on radio frequency identification technology as described in claim 5, characterized in that: The online monitoring and analysis background or the display terminal achieves data synchronization with the designated distribution transformer monitoring terminal TTU.

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