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This paper describes a formal method to assess the performance and risk related to electric power systems. A model of disturbance propagation is proposed to avail their impact on the expected levels of performance indicators and risk of Power Systems, and the contribution and cross impact from several market agents and actors during outages in the electric grid. The method is based on cascade disturbance...
This paper seeks to revise the concepts related to the overexcitation relaying in synchronous generators for hydro power plants and its coordination with the V/Hz limiter of the automatic voltage regulator (AVR). The methodology for the ANSI 24 protection function set up in hydro power plants is revisited. Finally, problems faced during the commissioning of a power plant in Brazil is discussed.
This paper deals with a study regarding the impact of distributed generation in the Electric System of RGE - one of the electric utilities of Brazilpsilas Southern Region - specifically concerning the integration of small hydroelectric plants (SHP) to the power system. Control and protection systems parameters characteristics have been taken into account and field-tests data have been obtained for...
Para-consistent Logic is a non-classic logic whose foundations allow for the contradictions treatment without invalidating the conclusions. Several researches have been demonstrating that through algorithms named PANs - Paraconsistent Analysis Nodes is possible to establish equations determined through signals representing restrictions, risks and configurations of electric power systems networks....
Aiming at to verify if the specifications of pre- established service quality parameters of commercial BPL technology agree with practical results this contribution presents and discusses some measurement carried out from medium- and low- voltages networks when commercial BPL are used to data transmission. In data transmissions using PLC (powerline communications) technology, network performance is...
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