A low-voltage cable contact temperature online monitoring device
A low-voltage cable and monitoring device technology, which is applied in the field of electric power engineering, can solve problems such as high cost, large error, and unfavorable cable equipment management level, and achieve the effects of easy installation and implementation, compact device structure, and improved measurement accuracy
Inactive Publication Date: 2015-10-28
STATE GRID CORP OF CHINA +1
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Problems solved by technology
At present, the optical fiber temperature measurement technology has been realized in the temperature measurement of high-voltage cables and long-distance cables. This technology can realize the temperature measurement of the whole process of cables, but the cost is high. For the widely used low-voltage cables, especially distribution transformers Low-voltage outgoing cables are not suitable for this technology
[0003] At present, low-voltage cables usually adopt the application of infrared temperature measurement technology, but when infrared technology measures the cable joints, the error is relatively large and manual hand-held infrared temperature measurement instruments are required to collect the temperature, which cannot achieve 24-hour online real-time temperature measurement, which is not conducive to improving the efficiency of cable equipment. management level
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[0019] Such as figure 1 and figure 2 As shown, the temperature data acquisition module is mainly composed of a housing 7, an acquisition circuit board 4, and a temperature sensor 5. The housing 7 is fixed at the junction of the low-voltage cable 9 through a high-temperature-resistant nylon belt 8. The upper opening of the housing 7 is closed by an acrylic plate 11. The lower end of 7 is provided with a heat-conducting paste chamber 10, which cooperates with the low-voltage cable 9, and a temperature sensor 5 is arranged in the heat-conducting paste chamber 10; an acquisition circuit board 4, an acquisition single-chip microcomputer 1, an acquisition infrared transceiver module 2, a temperature The sensor 5 and the lithium battery 3, the acquisition circuit board 4 are fixed in the shell 7 through the circuit board support 6, the acquisition single-chip microcomputer 1, the acquisition infrared transceiver module 2, the temperature sensor 5 and the lithium battery 3 are respec...
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The invention provides an online monitoring device for low-voltage cable contact temperature. The device is mainly composed of a temperature data collection module and a temperature data collection module. Module composition; the temperature data collection module is mainly composed of a collection circuit board, a plastic casing, a collection single-chip microcomputer, a collection infrared transceiver module, a clock chip, an LED signal display light, a display screen interface, a temperature and humidity sensor, and a dial switch; the temperature data collection module and Infrared communication is adopted between the temperature data acquisition modules. The on-line monitoring device for low-voltage cable joint temperature of the present invention can realize 24-hour real-time online monitoring of the low-voltage cable joint temperature, improves the accuracy of temperature data measurement, and provides support and help for improving the operation and management level of the power grid. The device of the invention has a compact structure and is convenient for installation and implementation.
Description
technical field [0001] The invention belongs to the technical field of electric power engineering, and in particular relates to a cable temperature monitoring device. Background technique [0002] The temperature change of the cable is directly related to the safe and stable operation of the cable, and the temperature at the cable joint is the most critical, where cable accidents often occur. At present, the optical fiber temperature measurement technology has been realized in the temperature measurement of high-voltage cables and long-distance cables. This technology can realize the temperature measurement of the whole process of the cable, but the cost is high. For the widely used low-voltage cables, especially distribution transformers Low-voltage outgoing cables are not suitable for this technology. [0003] At present, low-voltage cables usually adopt the application of infrared temperature measurement technology, but when infrared technology measures the cable joints,...
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IPC IPC(8): G01K7/00G08C23/04
Inventor 谭振孙超张猛卞春霞张伟孙敏刘晓娟王斌宋磊尚伟伟
Owner STATE GRID CORP OF CHINA