Power transmission line cable temperature monitoring device
A monitoring device and transmission line technology, applied in the field of transmission line cable temperature monitoring devices, can solve the problems of increased cable resistance, cable fire, threats to the stability and safety of the power grid, etc., and achieve the effect of reducing thermal resistance
Inactive Publication Date: 2020-05-12
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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Problems solved by technology
Among them, due to the aging of cable insulation or obstacles on the line, the local resistance of the cable increases and the temperature rises, which will lead to safety accidents such as fire on the cable.
Especially due to the complexity of the transmission line itself, conventional temperature monitoring methods are difficult to implement. If long-term online temperature monitoring and early warning are carried out on the transmission line, it will threaten the overall stability and security of the power grid.
Method used
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Embodiment Construction
[0015] In order to better understand the technical solution of the present invention, the following will be described in detail through specific examples:
[0016] see Figure 1 to Figure 2 . A transmission line cable temperature monitoring device of the present invention, the wireless passive temperature sensor 1 is arranged in the packaging box, the wireless passive temperature sensor 1 includes a PCB board 4 and a surface acoustic wave element 3, the upper surface of the surface acoustic wave element 3 is connected to the The open surface of the packaging box is flush. The packaging box is bound on the outside of the cable through the polyvinyl chloride collar 2, so that the surface acoustic wave element 3 is closely attached to the outside surface of the cable. The passive temperature sensor 1 receives the radio frequency energy of the external reader through the transmitting and receiving antenna 5, and sends back a signal, and the polarization direction of the transmit...
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The invention discloses a power transmission line cable temperature monitoring device. The device comprises a passive wireless sensor and a reader, wherein the wireless passive temperature sensor is arranged in a packaging box; the wireless passive temperature sensor comprises a PCB and a surface acoustic wave element, the upper surface of the surface acoustic wave element is flush with the open surface of the packaging box, and the packaging box is bound to the outer side of a cable through a polyvinyl chloride lantern ring, so that the surface acoustic wave element is tightly attached to theouter side surface of the cable; the PCB is led out through a transmitting-receiving antenna, the transmitting-receiving antenna leads to the nearest electric pole and is arranged along the electricpole, and the reader connected into the transmitting-receiving antenna is arranged at the bottom of the electric pole. Thus, online temperature monitoring and early warning of the cable can be realized.
Description
technical field [0001] The invention relates to a power transmission line cable temperature monitoring device used in the field of electric power on-line monitoring. Background technique [0002] Among all kinds of current grid faults, line faults should constitute the core grid faults. Judging from the current state, line faults as a whole are characterized by frequent occurrence and diversity, including various root causes of faults. Among them, due to the aging of the cable insulation or the occurrence of obstacles on the line, the local resistance of the cable increases and the temperature rises, which will lead to safety accidents such as fire on the cable. Especially due to the complexity of the transmission line itself, conventional temperature monitoring methods are difficult to implement. If long-term online temperature monitoring and early warning are carried out on the transmission line, it will threaten the overall stability and security of the power grid. Con...
Claims
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IPC IPC(8): G01K11/26G01K13/00G08C17/02
CPCG01K11/265G01K13/00G08C17/02
Inventor 胡海敏陶佳唯邵振达张弛李中豪黄昊坤孙辰徐剑李佳文梁佳宁袁靖胡玉娇
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO