Online fault monitoring method and system for lightning arrester

Abstract

The invention provides an online fault monitoring method for a lightning arrester. The method comprises the following steps of: receiving report information which at least comprises a voltage value and / or a current value and is sent by one or more feeder terminals through a wireless communication module in real time, calculating a difference value between the voltage value or the current value anda preset voltage value or a preset current value, and determining whether the difference value exceeds a preset error range or not; and if the difference value exceeds the preset error range, determining that lightning arresters where the feeder terminals corresponding to the reported information are located fail. The remote monitoring platform is used for monitoring the fault condition of each lightning arrester in real time; once a fault occurs, the faults of the lightning arresters can be quickly determined and the positions of the faulted lightning arresters can be positioned, maintenancepersonnel can quickly maintain the lightning arrester, time for troubleshooting fault points one by one due to faults of the lightning arrester in the prior art is greatly saved, the fault lightningarrester can be quickly replaced, a transformer or a line can be prevented from being struck by lightning to the maximum extent, and possible large-area power failure can also be avoided.

Description

technical field [0001] The invention belongs to the technical field of electric equipment, and in particular relates to an online fault monitoring method and an online monitoring system of a lightning arrester. Background technique [0002] Negative thunderclouds are produced during the flow of the atmosphere. With the accumulation of negative charges in the negative thunderclouds, the electric field strength gradually increases. When it reaches a certain level, it begins to discharge downward stepwise, which is called downward first-come discharge. When the downward leader gradually approaches the ground object and reaches a certain distance, the ground object generates a tip discharge under the action of a strong electric field, forming an upward leader and developing towards the downward leader. After the two meet, a lightning channel is formed, and then Thunder and lightning are formed. It is generally believed that when the thunderbolt descending leader develops downwa...

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention provides an online fault monitoring method for lightning arresters, which aims to solve the problem that when the lightning arrester in the prior art fails, it is impossible to find out the specific faulty lightning arrester in time, which leads to the need to cut off the power in the area and test the lightning arresters one by one to find out. Fault Arrester Problems

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