Intelligent grounding device for high-voltage power cable sheath
A cable sheath and high-voltage power technology, which is applied in the field of intelligent grounding devices for high-voltage power cable sheaths, can solve the problems that grounding boxes cannot collect, monitor and adjust current, reduce the possibility of danger, facilitate maintenance and repair, and reduce The effect of the probability of failure
Pending Publication Date: 2019-08-02
FUJIAN HENGSHENG PIPES
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Problems solved by technology
[0003] The purpose of the present invention is to provide an intelligent grounding device for the sheath of high-voltage power cables to solve the problem that the traditional grounding box cannot collect, monitor and adjust the current
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[0016] The present invention will be described in detail below in conjunction with specific embodiments.
[0017] The specific implementation of the present invention is as figure 2 As shown, a high-voltage power cable sheath intelligent grounding device is characterized in that it includes a sheath grounding wire lead-in terminal (8), a current acquisition module (7), a voltage acquisition module (9), and an impedance switching matrix module (10) , a centralized ground connection terminal (13), a core control processor board (11), a display screen (6), a communication board (12), and a power supply board (14); the core control processor board (11) Respectively with the display screen (6), the current acquisition module (7), the voltage acquisition module (9), the impedance switching matrix module (10), the communication board (12) and the power supply The board (14) is connected, and the sheath grounding wire lead-in terminal (8) is respectively connected to the current acq...
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The invention discloses an intelligent grounding device for a high-voltage power cable sheath, which is used at the joint of a high-voltage power transmission cable to replace the original traditionalgrounding box. The intelligent grounding device has a high-voltage power cable sheath grounding circulation current on-line monitoring function and a sheath virtual grounding function. The intelligent grounding device is provided with a built-in current acquisition device, thereby being capable of acquiring and analyzing the circulation current of multi-point grounding of the power cable sheath,automatically switching the impedance of the loop, being capable of reducing the grounding circulation current, and avoiding the occurrence of dangers caused by the excessively high circulation current; and the intelligent grounding device is provided with a built-in voltage acquisition device, thereby being capable of acquiring the floating ground voltage of the power cable sheath, giving out analarm signal when the voltage exceeds the threshold, and avoiding the occurrence of dangers caused by insulation breakdown due to the excessively high voltage. The intelligent grounding device has thefunctions of on-site display, remote communication, remote measurement and remote control, can provide visual data for the operation and maintenance personnel on site and has a function of reportingsudden abnormal data.
Description
technical field [0001] The invention relates to a power collection and protection device, in particular to an intelligent grounding device for a high-voltage power cable sheath. Background technique [0002] 110kV and above power cables are of single-phase structure and have a metal protective layer inside. The metal protective layer is prone to generate high induced voltage during the operation of the cable. If the metal layer is not well grounded, it will float when lightning strikes or surge The empty voltage will rise rapidly, which will damage the insulation layer of the power cable, and will also cause harm to the operation and maintenance personnel; when the cable protective insulation layer is damaged, the cable metal protective layer will form a multi-point grounding loop. The increase in the loop current will cause the cable to heat up, thus affecting The cable runs safely. The traditional grounding box only plays the role of grounding, does not have the function ...
Claims
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Login to View More IPC IPC(8): H02H1/00H02H9/02
CPCH02H1/0061H02H9/02
Inventor 叶漳桂陈励娜
Owner FUJIAN HENGSHENG PIPES