Electric power transformer windings parameter on-line real-time identification device and method

Abstract

The invention relates to an online and real time identifying device and a method for electricity power transformer winding parameters, belonging to the field of electricity power transformer techniques. The device comprises a power supply unit, a communication unit, a data collecting unit, a displaying unit and a central processing unit; the magnitude of voltage and current in the transformer of the spot goes into the data collecting unit through a voltage transformer and a current transformer respectively, then is transformed by a voltage mutual inductor and a current mutual inductor of the data collecting unit, and then is transformed into a digital quantity by a signal conditioning circuit and an A / D conversion chip; the digital quantity is transmitted to the central processing unit; the processed data by the central processor unit are transmitted to a spot epigynous machine by an RS232 or an RS485 or a CAN concentration line; the epigynous machine transfers the data to a remote monitoring machine to realize remote monitoring, which can realize an on-line and real time monitoring of the short-circuit impedance of the transformers, master the inner running conditions of the transformers at any time and realize the real time analysis and the error alarming of the transformers, thus improving the stable and reliable operation of the transformers.

Description

technical field [0001] The invention belongs to the technical field of power transformers, and relates to an online real-time identification device and method for winding parameters of power transformers, which are used for fault warning, early maintenance, and fault shutdown for the status of running transformers in a power grid, so as to ensure reliable operation of transformers and realize power grid stability. Reliable operation. Background technique [0002] The safe operation of transformers has always been one of the key issues that the power industry has focused on. From the type test before the new product is put into operation to the regular maintenance and online monitoring during operation, every link is very important. The methods are generally divided into two categories. : One is the inspection after the transformer stops running; the other is the online monitoring during the operation of the transformer. As the inspected object of the transformer: it is gene...

AI Technical Summary

Problems solved by technology

This invention solves the problem that the current transformer maintenance is offline maintenance, realizes online real-time winding measurement of transformers, and real-time monitoring of transformers

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