Cable conductor temperature monitoring method and device, cloud server, and cable conductor temperature monitoring system
A cable conductor and monitoring system technology, applied in the field of electric power, can solve the problems of wasting manpower, high cost, and inability to continue monitoring.
Active Publication Date: 2020-08-18
罗孚电气(厦门)有限公司
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Problems solved by technology
Among them, infrared temperature measurement requires staff to use instruments to measure and analyze the temperature of a certain part of the cable on site. This method is expensive to measure, wastes a lot of manpower, and cannot continuously monitor the temperature
Fiber optic cable temperature measurement is expensive for cables that have already been laid, and can only be measured when the cable under test is well laid. If the cable breaks or fails, it cannot continue to monitor
The linear temperature measuring cable can only detect the regional temperature of the cable, and cannot accurately determine which part of the cable has a problem, and requires a large number of communication cables
Method used
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[0086] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present disclosure.
[0087] figure 1 It is a schematic topology diagram of a cable conductor temperature monitoring system provided by an embodiment of the present invention. Wherein, the cable in this embodiment includes a cable conductor, an insulating layer covering the cable conductor, and at least one sheath. The thermal model of the cable in this embodiment refers to figure 2 sh...
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The embodiment of the invention discloses a cable conductor temperature monitoring method and device, a cloud server, and a cable conductor temperature monitoring system. Wherein, the cable conductor temperature monitoring method includes the following steps: receiving the real-time temperature of the insulating layer, each sheath and the surface of the cable collected from the temperature measurement terminal in real time; based on the obtained real-time temperature, and, pre-stored The parameters of the insulation layer and the sheath layer, as well as the initial temperature of each layer of the cable during the preset transient state, determine the real-time temperature of the cable conductor; the parameters include loss, thermal capacitance and thermal resistance. The present invention obtains the real-time temperature of the cable conductor according to the parameters of each layer of the cable in the running state, combined with the prediction and alarm system, and finds the fault in the cable running process in time, thereby reducing or even avoiding the further economic loss caused by the cable fault.
Description
technical field [0001] The invention relates to the field of electric power technology, in particular to a cable conductor temperature monitoring method and device, a cloud server, and a cable conductor temperature monitoring system. Background technique [0002] As a common electrical equipment, cable lines are widely used in various power supply systems. Whether the running state of the cable line is normal or not directly affects the stability of the entire power supply system, so the monitoring of the running state of the cable line is very important. [0003] Relying on manpower to handle the operation and maintenance of cable lines, there are problems such as shortage of maintenance and installation personnel and huge maintenance workload. At the same time, since the temperature of the cable conductor can accurately reflect the insulation state and current carrying capacity of the cable, the temperature of the cable conductor becomes the main basis for indirectly judg...
Claims
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IPC IPC(8): G01K13/00
CPCG01K13/00
Inventor 刘宗健张振兵
Owner 罗孚电气(厦门)有限公司