Power cable intelligent grounding box
A technology for power cables and grounding boxes, which is applied in the field of power cable operation safety monitoring, can solve problems such as being unable to effectively meet the needs of online monitoring of power cables, and achieve the effects of being easy to popularize, improving effectiveness and accuracy, and ensuring safety.
Inactive Publication Date: 2014-06-11
CHANGZHOU POWER SUPPLY OF JIANGSU ELECTRIC POWER +2
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Problems solved by technology
At present, the online monitoring technology of power cables has been gradually applied, but the current grounding box for power cables cannot effectively meet the needs of online monitoring of power cables in various environments.
Method used
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Embodiment 1）
[0026] See figure 1 and figure 2 , the power cable intelligent grounding box of this embodiment is mainly composed of a cable sheath cross-connection protection grounding box 1, a signal acquisition terminal 2, a phase A current transformer 3, a B phase current transformer 4, a C phase current transformer 5, and an antenna 6 and energy-taking current transformer 7.
[0027] The cable sheath cross-interconnection protection grounding box 1 is a grounding box in the prior art, and will not be described here. The cable sheath cross-interconnection protection grounding box 1 has a square sealed box body, the box body includes an upper cover, and the upper cover is provided with a line passing hole that penetrates up and down; the box body is provided with 3 bridging copper bars 11 arranged crosswise.
[0028] The signal acquisition terminal 2 is fixedly arranged at the upper left part of the cable sheath cross-connection protection grounding box 1 . The signal acquisition term...
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The invention provides a power cable intelligent grounding box. The power cable intelligent grounding box comprises a cable sheath crossed interconnection protection grounding box, a signal collection terminal, a current transformer on a phase line A, a current transformer on a phase line B, a current transformer on a phase line C, an antenna and an energy-obtaining current transformer for power supply, wherein the signal collection terminal is mounted in the grounding box; the signal collection terminal comprises an over-current protection module, a current sampling module, a temperature sensor, a humidity sensor, a signal processing module, a GPRS (General Packet Radio Service) module and a power supply module; and the signal collection terminal is used for receiving current sampling information and temperature processed by three current transformers through the over-current protection module and the current sampling module, processing temperature and humidity transmitted by the temperature and humidity sensors and sending related information to a background monitoring system of power supply department wirelessly. The power cable intelligent grounding box is convenient to implement, low in cost and easy to popularize. In use, the power cable intelligent grounding box is capable of effectively improving validity and accuracy of cable online monitoring and ensuring the safety of a power supply power grid.
Description
technical field [0001] The invention relates to the field of power cable operation safety monitoring, in particular to an intelligent grounding box for power cables. Background technique [0002] With the rapid development of China's economy and the continuous improvement of urban modernization, power cables, as important equipment in urban power grids, are developing extremely fast, and urban power cables are usually laid in the ground. One of the reasons for the failure of urban cables in actual operation is the failure of the grounding system of the power cable, which accounts for 21% of cable failures. The outer sheath of the power cable is easily damaged by external forces, chemical corrosion, and lightning overvoltage during use. Or system overvoltage and other reasons, resulting in damage to the sheath insulation and grounding at one or more points, thus destroying the grounding system of the metal sheath of the high-voltage cable, causing the imbalance of the induced...
Claims
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Login to View More IPC IPC(8): G01R31/08G01R31/02H02G15/00
Inventor 朱辉杜健刘茜倩蒋鹏
Owner CHANGZHOU POWER SUPPLY OF JIANGSU ELECTRIC POWER