A power-taking device and method for a cable sheath grounding system

A cable sheath and grounding system technology, applied in the field of electricity, can solve problems such as unstable power taking and inconvenient installation of power taking devices, and achieve the effects of stable size, stable power energy, and improved power transmission capacity

Active Publication Date: 2020-11-17
XUJI GRP +3
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a power-taking device and method for a cable sheath grounding system, which is used to solve the problems in the prior art that the induction power-taking from the cable sheath is unstable and the installation of the power-taking device is inconvenient

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  • A power-taking device and method for a cable sheath grounding system

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Embodiment 1

[0018] A power-taking device for a cable sheath grounding system, the power-taking device is set at a cable sheath grounding position where one end is grounded, such as figure 1 As shown, the power harvesting device includes an input port AB, a voltage limiting circuit, an energy harvesting circuit, a protection circuit, a control circuit, a monitoring circuit and a power output port EF, and the power harvesting circuit includes a rectifier bridge and an energy storage element. The energy element is an energy storage capacitor C, the input port AB is connected in series to the grounding position of the cable sheath grounding system, the input port AB is also connected to the input end of the rectifier bridge, and the output end of the rectifier bridge is connected to both ends of the energy storage capacitor C , the rectifier bridge rectifies the input AC current, and stores the rectified electric energy in the energy storage capacitor C. Both ends of the energy storage capacit...

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Abstract

The invention provides a power taking device and method of a cable sheath grounding system. The power taking device is arranged at the grounding position of a cable sheath or the cross interconnectionposition of the cable sheath and is far away from the cable in operation, so that damage to the cable, such as compression deformation and the like, can be avoided; when the power taking device is connected to the grounding position of the cable sheath in series, the capacitor current of a cable metal sheath is acquired by the power taking device, and stable current output can be obtained; when the power taking device is connected to the cross interconnection position of the cable sheath in series, sheath capacitance currents and sheath induction currents between different phases are acquired; and due to the fact that the angle differences of the capacitance currents and the induction currents of the cable metal sheaths in different phases are all 120 degrees, sufficient electric energy output can be obtained. According to the cable sheath grounding system, the power taking device takes the sheath current, so that stable electric energy can be obtained, and the device is convenient toinstall.

Description

technical field [0001] The invention belongs to the field of electricity, in particular to a power-taking device and method for a cable sheath grounding system. Background technique [0002] With the rapid development of the power network and power consumption, the safe operation of the power network and power consumption has been paid more and more attention by the power system. Inside the cable tunnel, people need to install more and more monitoring equipment in order to keep abreast of the operation of various equipment and environments in the cable tunnel. However, most of the cable tunnels currently in operation do not have a power supply for monitoring equipment, and the power supply problem brings great difficulties to the installation and implementation of monitoring equipment. [0003] At present, the on-site power-taking equipment in the cable tunnel mainly adopts the conductor induction power-taking method. The basic principle is to use Faraday's electromagnetic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/219H02M1/32
CPCH02M1/32H02M7/219
Inventor 卢站芳周水斌梁武民牧继清龚东武郭宏燕雍明超陈磊和红伟路光辉王胜辉刘畅郭旭张仑山杨芳
Owner XUJI GRP
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