Abstract

Many power quality problems are generated by various electrical events (faults, disturbances, etc.). This paper presents the PC-08/104 equipment for monitoring and analysis of transient electrical events in power systems. It is a programmable electronic module which runs according to the signals provided by the transducers that take over the process parameters. PC-08/104 performs the acquisition of analog and digital inputs, local data storage, monitoring and processing, data transfer to an IBM-PC compatible computer and communication with the process server in a distributed data acquisition system. The program which runs on an IBM-PC compatible computer contains three sections: Monitoring (configuring all settable parameters of the equipment), Analysis (visualization of the input signals waveforms and the computation of several characteristic values) and Manager (management of records and archives). PC-08/104 provides an excellent tool to analyse the performance of the power system before, during and after a network disturbance situation. Some experimental results obtained using this equipment in energetic system are also presented in the paper.

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