Method, system and device for monitoring temperature of power capacitor based on RFID

Abstract

The invention discloses a method, system and device for monitoring the temperature of a power capacitor based on an RFID and belongs to the technical field of power transmission and transformation. The method comprises a step of determining temperature measurement points of power capacitors to be measured, arranging high-precision temperature sensing tags at the temperature measurement point, andassembling power capacitors, a step of matching the plurality of assembled power capacitors with a plurality of dipole antennas such that a reader-writer is in network connection with the high-precision temperature sensing tags through the antennas, and a step of obtaining temperature data of the temperature measurement points of the power capacitors to be measured through the high-precision temperature sensing tags, preprocessing the temperature data through the reader-writer, transmitting the data to a centralized monitoring center, and monitoring the temperature of the power capacitors. According to the invention, the temperature precision of the power capacitors for a power system transformer substation can be greatly improved, meanwhile, the operation temperature of the power capacitors can be monitored in real time through the ubiquitous Internet of Things technology, a corresponding early warning value is set through monitoring software, and the intelligent perception of the operation states of the power capacitors is achieved.

Description

technical field [0001] The present invention relates to the technical field of power transmission and transformation, and more specifically, to a method, system and device for monitoring the temperature of a power capacitor based on RFID. Background technique [0002] Power capacitors are very important equipment in the power system, and there are many applications. When the power load is large, it plays an important role in balancing the reactive power of the system and adjusting the system voltage. The dielectric strength of the insulating medium of a power capacitor is greatly affected by temperature. Excessive temperature will accelerate the aging of the capacitor insulating medium and reduce the service life of the capacitor. In severe cases, it may cause capacitor accidents and affect the safety of the power system. For this reason, it is necessary to monitor the temperature of the power capacitor in real time to prevent possible failures in advance. At present, the t...

AI Technical Summary

Problems solved by technology

The traditional test method is to embed a thermocouple in the core of the capacitor, and lead it out to the monitoring equipment for measurement through the wire. The tester needs to record the temperature value of each measuring point in time, which is time-consuming and laborious.

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