Online monitoring system for performances of transformers based on wide area synchronous measurement

Abstract

The invention discloses an online monitoring system for performances of transformers based on wide area synchronous measurement, and the system comprises a plurality of CT mutual inductors, a CVT transformer, an EVT transformer, an ECT transformer, a PT transformer, a CVT parameter acquisition module, an environmental parameter monitoring module, a merging unit, a clock synchronization module, anonline monitoring device, an electric energy collecting terminal, and an acquisition main station, wherein the current transformer CT, the capacitive voltage transformer CVT and the electromagnetic voltage transformer PT achieve the analog independent butt joint with the online monitoring device. The electronic voltage transformer EVT, the electronic current transformer ECT, the CVT parameter acquisition module and the environmental parameter monitoring module are connected with the merging unit, and the merging unit and the online monitoring device achieve the digital independent butt joint.The clock synchronization module is respectively in butt joint with the merging unit and the online monitoring device, and the output end of the online monitoring device is connected with the acquisition main station through the electric energy collecting terminal. When the system is in use, the system can synchronously monitor the insulating performance, error characteristics and environment parameters of the plurality of transformers.

Description

technical field [0001] The invention relates to the technical field of power equipment monitoring, in particular to an online transformer performance monitoring system based on wide-area synchronous measurement. Background technique [0002] In the current power system, capacitive voltage transformer CVT, electronic voltage transformer EVT, electronic current transformer ECT and electromagnetic voltage transformer PT are widely used. Reliability will directly affect the fairness of energy metering and the security of grid operation. Capacitive voltage transformer CVT, electronic voltage transformer EVT, electronic current transformer ECT and electromagnetic voltage transformer PT are easily affected by many aspects due to their own structural characteristics, so the development of transformer The main performance index online monitoring device and evaluation system are of great significance to ensure the safe operation of the power system and the accuracy and reliability of...

AI Technical Summary

Problems solved by technology

At present, the single transformer performance online monitoring system composed of data acquisition device + data processing device + server and data acquisition card + industrial computer has complex system, single collection volume, small collection volume, high cost and high cost when performing synchronous monitoring of multiple transformers. The problem of low reliability, at the same time, data transmission uses a dedicated network channel, which requires security assessment to implement

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