Wireless monitoring device and monitoring method for grounding current of transformer core/clamp

Abstract

The invention belongs to the field of online monitoring of transformers, and particularly relates to a device and a method for monitoring the grounding current of a transformer core / clamp based on wireless communication. A straight-through current transformer and a device working circuit board are arranged in a shell. The upper part of the shell is connected with a housing top cover. A display screen is arranged on the housing top cover, and is connected to a controller. An external wireless communication module antenna is led from the shell. The device and the method can be used for monitoring data in real time, have functions of current ultralimit alarming, data information storage, system clock synchronization, parameter configuration and the like, and can be widely applied to the online monitoring of the grounding current of a core / clamp of electric equipment such as a transformer and a reactor, possible failures can be timely discovered, and the routing inspection work of an operator can be reduced or replaced.

Description

technical field [0001] The invention belongs to the field of transformer on-line monitoring, and in particular relates to a wireless communication-based transformer core / clamp grounding current wireless monitoring device and a monitoring method thereof. Background technique [0002] The power transformer is one of the key equipment in the power system, and it is also a link with a high failure rate in the power equipment. Its normal operation is an important guarantee for the safe, reliable, high-quality and economical operation of the power system. When the power transformer is in normal operation, the iron core / clamp must have one and only one point of reliable grounding. Once the iron core / clamp is grounded at two or more points, a circulating current will be generated inside the iron core / clamp, causing local overheating and serious Sometimes it will cause local burning of the iron core / clamp, and even fuse the grounding piece, causing the potential of the iron core / clam...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems existing in the measurement of the above-mentioned transformer core / clamp ground current, the present invention provides a wireless communication-based transformer core / clip ground current wireless monitoring device and monitoring method, the purpose of which is to solve the previous monitoring operation state In the transformer core / clamp grounding state method, it is difficult to ensure the accuracy and accuracy of the measurement data, and the regular inspection cannot guarantee the timely detection of core / clamp multi-point grounding faults.

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