Dry-type reactor fault early warning system based on distributed detection

Abstract

The invention provides a dry-type reactor fault early warning system based on distributed detection, and belongs to the technical field of reactor overheating fault early warning systems. A dry-type reactor fault early warning system based on distributed detection comprises a reactor, a distributed temperature measurement system arranged on the reactor, a multi-physics field coupling simulation system connected with the distributed temperature measurement system, and a partial discharge combined diagnosis early warning algorithm connected with the multi-physics field coupling simulation system. And the partial discharge combined diagnosis early warning algorithm is connected with the sound array sensing system. Development of the system is based on a distributed temperature measurement system, the system is mainly used for distributed temperature measurement of the dry-type reactor, a multi-physics field coupling simulation system simulates distribution of a three-dimensional temperature field, accurate troubleshooting of thermal defects and fault diagnosis work are carried out in combination with an early warning algorithm, and the system can be applied to the reactor running in a complex environment.

Description

technical field [0001] The invention belongs to the technical field of reactor overheating fault early warning systems, in particular to a dry reactor fault early warning system based on distributed detection. Background technique [0002] Dry-type air-core reactors have the advantages of low loss, low noise, good linearity of reactance value, long design life, and simple maintenance, and are more and more widely used in power systems. The device mainly plays the role of limiting closing inrush current, limiting short-circuit current, compensating stray capacitive current, filtering and so on in the system. [0003] During the operation of the dry-type reactor, due to the presence of impurities in the coil wires, or the poor insulation of the epoxy resin encapsulated in the operation process, the weft-free glass ribbons are not well insulated, etc. Excessive temperature rise and overheating will eventually lead to the burnout and scrapping of the reactor, causing great loss...

AI Technical Summary

Problems solved by technology

The temperature rise test process of the reactor, the determination method of the hot spot temperature rise and the average temperature rise, the average temperature rise cannot reflect the temperature rise distribution of different positions of the reactor, and most of them are used in engineering to test the thermal performance of the reactor

[0009] For example, in patent CN204241402U, the infrared temperature detection method is widely used at present, but due to the structural limitation of the reactor, the airway gap in the envelope is narrow, and the infrared temperature sensor cannot be installed in the inner layer of the reactor with a higher temperature. The lower outer envelope is tested, and the test results are not accurate enough; the patent document with the publication number CN105698959A discloses a dry-type air-core reactor overheating fault warning system based on TVOC and temperature inspection, in which two or more wireless TVOC The gas sensors are respectively arranged on the outer surface of the dry-type air-core reactor, two or more wireless temperature sensors are respectively arranged on the outer surface of the dry-type air-core reactor, and two or more wireless TVOC gas sensors are respectively It is connected with the wireless gas data acquisition device through the wireless network, and two or more wireless temperature sensors are respectively connected with the wireless temperature data acquisition device through the wireless network, and the wireless gas data acquisition device and the wireless temperature data acquisition device are connected with the remote customer End-to-end connection, the remote client is connected to the alarm system, which can perform real-time online automatic monitoring of the overheating fault of the dry-type air-core reactor, with higher accuracy and precision

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