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Surges arresters are extremely important on high voltage stations. Because of their direct connections with to high voltage, any fault can have to serious consequences to the system. The evaluation of these equipments is therefore an important task to maintenance engineering. However, since removing all equipments from the system to perform proper laboratorial tests is not feasible, an evaluation...
This paper describes the recent Brazilian experience at on-site Partial Discharges (PD) measurement and analysis in Power Transformers, including the development of IMA-DP (Instrumentation for Monitoring and Analysis of Partial Discharges), designed by Eletrobras to monitor High Voltage Equipment. The proposed system includes high speed digitizer cards on an industrial computer and is designed to...
The paper discusses the modeling of substations for reliability, dealing with each equipment and its influence in the topology. The study consider the power availability for each load, using either an analytic and a simulation model. Some results and a software implementation are presented.
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