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Dry-type air-core shunt reactor fault monitoring method, system, medium and equipment

A fault monitoring and reactor technology, applied in information technology support systems, instruments, measuring electricity, etc., can solve problems such as failures of dry-type hollow shunt reactors, and achieve the effect of early warning of operating status

Pending Publication Date: 2022-07-12
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

However, this patent still cannot solve the problem that dry-type air-core shunt reactors are prone to failure in cold regions

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  • Dry-type air-core shunt reactor fault monitoring method, system, medium and equipment

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Embodiment

[0024] The invention provides a fault monitoring method for dry-type hollow shunt reactors in cold regions, comprising:

[0025] Before the reactor burns out, it is usually accompanied by partial discharge. The electromagnetic signal generated by the partial discharge can be used as the main characteristic quantity to detect the state of the dry-type air-core reactor; Install UHF or UHF sensors (i.e. broadband microwave antennas) in the accessories of the device to detect the high-frequency electromagnetic wave signals generated by partial discharge, realize the detection of partial discharge defects, and ensure the signal-to-noise ratio and sensitivity in the on-site interference environment. .

[0026] High-frequency current detection technology is used to sample, filter, extract and identify high-frequency partial discharge signals in the current of dry-type air-core shunt reactors, so as to distinguish normal state and fault state, and give early warning of fault state.

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Abstract

The invention provides a dry-type air-core shunt reactor fault monitoring method, system, medium and equipment, and the method comprises the steps: obtaining an electromagnetic signal generated by the discharge of a reactor, and enabling the electromagnetic signal to serve as a characteristic quantity for detecting the state of the dry-type air-core shunt reactor; or according to a high-frequency current detection method, sampling, filtering, feature extraction and identification are carried out on the high-frequency partial discharge signal in the current of the dry-type air-core shunt reactor so as to distinguish the normal state and the fault state under the preset condition, and early warning is carried out on the fault state. According to the invention, data fusion analysis is carried out by combining three detection methods of high sensitivity and non-contact characteristics of ultrahigh-frequency partial discharge detection, confirmation of a high-frequency current detection method and visual distributed wireless temperature measurement, so that detection of early latent faults of the dry-type air-core shunt reactor in a cold region is realized; and the effect of early warning the operation state of the dry-type air-core shunt reactor is achieved.

Description

technical field [0001] The present invention relates to the technical field of reactor fault monitoring, in particular to a method, system, medium and equipment for fault monitoring of dry-type hollow shunt reactors. Background technique [0002] Dry-type hollow shunt reactors in cold areas are more prone to failure, and the reasons are more complicated, such as damped coils or weak insulation, partial discharge arc burning, partial overheating insulation damage breakdown, overvoltage, small animal bridge short circuit and other external forces Influenced by factors, there are also damage caused by the deformation of the coil due to the mechanical stress generated by the short-circuit current. [0003] Patent document CN109387734A (application number: CN201811591051.0) discloses an on-line monitoring device for short-circuit fault between turns of a reactor and a monitoring method thereof, which transmits the collected data to a host computer for storage, and calculates the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12G01R19/00G01R31/56G01K1/024
CPCG01R31/12G01R31/56G01R19/0092G01K1/024Y04S10/52
Inventor 李立学
Owner SHANGHAI JIAO TONG UNIV
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