Branch detection device and system for dry-type air-core reactor
An air-core reactor and detection device technology, applied in the field of electric power, can solve the problems of inability to realize real-time online detection, inaccurate measurement results, and destructiveness.
Active Publication Date: 2021-03-23
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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Problems solved by technology
In the prior art, there are methods to detect the operating temperature of the reactor package, such as infrared imaging, etc. However, because the reactor package air passage is deep and narrow, it is difficult to detect the hottest point temperature, resulting in measurement The result is inaccurate; there is also a reactor insulation test using oscillating wave voltage, but this test method is destructive to a certain extent, and it cannot realize real-time online detection and find defects in time
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[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, 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 creative efforts fall within the protection scope of the present invention.
[0039] see figure 1 , is a schematic structural diagram of a branch detection device for a dry-type air-core reactor provided in Embodiment 1 of the present invention. A branch detection device 10 for a dry-type air-core reactor provided in an embodiment of the present invention includes: an energy harvesting module 11 , a sensing module 12 , a measurement module 13 and an analysis module 14 . in,
[0040] The energy-taking module 11 is electrically connected to ...
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The invention discloses a branch detection device for a dry-type air-core reactor. The branch detection device comprises an energy taking module, an induction module, a measurement module and an analysis module. The energy taking module is coupled with a body magnetic field of the dry-type air-core reactor so as to generate induction current. The induction module induces the induction current to the dry-type air-core reactor body, so that the dry-type air-core reactor distributes the induction current to a reactor coil of each wire branch. The measurement module measures a current signal of each wire branch of the dry-type air-core reactor. The analysis module analyzes whether the corresponding wire branch is abnormal or not according to the current signal of each wire branch. The invention further discloses a corresponding branch detection system of the dry-type air-core reactor, and by the adoption of the branch detection system, online measurement of the branch current of the dry-type air-core reactor can be effectively achieved so as to monitor the operation condition of the dry-type air-core reactor in real time.
Description
technical field [0001] The invention relates to the field of electric power technology, in particular to a branch detection device and system for a dry-type air-core reactor. Background technique [0002] Dry-type air-core reactor is a primary device commonly used in power systems. It is formed by parallel connection of multiple circuits, and each circuit is formed by parallel winding of multiple strands of wire. Therefore, a single reactor is composed of multiple wires in the circuit. The structure of wires connected in parallel. The number of parallel branches of the reactor is directly related to the size of the capacity, and the number of parallel branches of the large-capacity dry-type air-core reactor is as many as hundreds. In the power system, the dry-type air-core reactor mainly plays the role of balancing circuit waveform, filtering, voltage regulation, current limiting, etc., and plays an indispensable role in the operation of the power grid. [0003] Due to its...
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IPC IPC(8): G01R31/12G01R31/52G01R31/72H02J50/12
CPCG01R31/1227G01R31/52G01R31/72H02J50/12
Inventor 邹林张巍黄克捷李锐海
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD