A 360-degree omni-directional ring network arc protection system

Abstract

The invention discloses a 360-degree omnibearing ring network arc light protection system which is connected with a current protection unit and one or more arc light expansion units through a switch. The arc light expansion units (8) are connected with a transparent fiber (7) for performing 360-degree omnibearing arc light detection. The 360-degree omnibearing ring network arc light protection system is connected with a portable arc light sensor through a wireless transceiver and is connected with a NFC inspection tour system through the switch. The portable arc light sensor comprises an arc light sensor probe, an NFC module, and a portable connecting piece. The NFC module is arranged in the arc light sensor probe. The arc light sensor probe is installed on the portable connecting piece. The 360-degree omnibearing ring network arc light protection system uses distributed design, is suitable for being used for middle-low-voltage dual-bus protection, has a flexible networking characteristic, may interactively communicate with the NFC inspection tour system, and may achieve 360-degree omnibearing arc light detection without an dead angle by using the transparent fiber.

Description

technical field [0001] The invention relates to the field of arc protection, in particular to a 360-degree omni-directional ring network arc protection system. Background technique [0002] In the power system, busbars with a voltage level of 35kV and below are generally not equipped with busbar protection. However, due to the large number of outgoing lines on the medium and low voltage busbars, frequent operations, and the distance between the three-phase conductor lines and the earth is relatively close, it is easy to be harmed by small animals, and the quality of equipment manufacturing is worse than that of high-voltage equipment. Poor conditions, changes in system operating conditions, human and operational errors and other reasons, the failure probability of medium and low voltage buses is much higher than that of high voltage and ultra high voltage buses. But for a long time, people have not paid enough attention to the protection of medium and low voltage buses, and...

AI Technical Summary

Problems solved by technology

However, due to the large number of outgoing lines on the medium and low voltage busbars, frequent operations, and the distance between the three-phase conductor lines and the earth is relatively close, it is easy to be harmed by small animals, and the quality of equipment manufacturing is worse than that of high-voltage equipment. Due to poor conditions, changes in system operating conditions, human and operational errors, etc., the failure probability of medium and low voltage buses is much higher than that of high voltage and ultra high voltage buses

But for a long time, people have not paid enough attention to the protection of medium and low voltage buses, and no advanced and reasonable solutions have been found. expansion, resulting in huge economic losses

In recent years, due to various reasons, medium and low-voltage switchgears have been severely burned, and some have even developed into serious fire disasters. The accidents of main transformers damaged by external short-circuit current impacts have also increased year by year, and these distribution network accidents have been improperly handled and even enlarged. It has developed into a transmission network accident, causing significant economic losses, and has aroused widespread concern in the power sector

The reason is mostly because there is no medium and low voltage busbar protection, and the fault cannot be quickly removed.

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