Working power supply for on-line monitoring of three-phase cable
A three-phase cable and working power technology, which is applied in battery circuit devices, measuring power, collectors, etc., can solve the problem of low reliability of working power and achieve the effect of simple structure and low cost
Active Publication Date: 2022-02-15
FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID
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Problems solved by technology
[0004] The invention provides a working power supply for on-line monitoring of three-phase cables, which solves the technical problem of low reliability of the existing working power supply for on-line monitoring of three-phase cables
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[0032] An embodiment of the present invention provides a working power supply for on-line monitoring of three-phase cables, which is used to solve the technical problem of low reliability of the existing working power supply for on-line monitoring of three-phase cables.
[0033] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following The described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0034] see figure 1 , figure 1 A schematic structural diagram of ...
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The invention relates to the technical field of power supply, and discloses a working power supply for on-line monitoring of a three-phase cable. The working power supply comprises an energy taking coil, a rectification filter circuit, a charging management circuit, an energy storage battery and a voltage stabilizing circuit. The energy taking coil, the rectification filter circuit, the charging management circuit and the voltage stabilizing circuit are electrically connected in sequence, and the energy taking coil comprises a non-closed magnetic material wound on a three-phase cable along a tangential component of a magnetic field. Induced voltage can be effectively obtained through the electromagnetic induction principle when the three-phase cable runs in a through-flow mode, and a stable and reliable working power supply is provided for an online monitoring device.
Description
technical field [0001] The invention relates to the technical field of power supply, in particular to a working power supply for on-line monitoring of three-phase cables. Background technique [0002] The 10kV distribution network usually uses three-phase cables for power transmission. In order to ensure the reliable operation of the three-phase cable, an online monitoring device is usually used to monitor the three-phase cable. During the monitoring period, the online monitoring device needs to be powered by a working power supply. Limited by the installation conditions of the on-site three-phase cable monitoring points and the size of the three-phase cables, there are many shortcomings in the way of using traditional energy storage batteries for power supply. [0003] In the prior art, a power supply device based on the induction voltage charging of the high-voltage cable sheath is provided (the patent application number is CN202021233333.6). The basic idea is to use the ...
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IPC IPC(8): H02J50/10H02J7/02H02J7/00H02M3/07G01R31/00G01R31/58
CPCH02J50/10H02J7/02H02J7/00712H02J7/00308H02M3/07G01R31/00G01R31/58H02J2207/20
Inventor 欧晓妹刘崧武利会刘益军唐琪汪进锋郭国伟陈道品陈邦发何智祥王雪倩罗明枝
Owner FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID