On the protection of thermal processes

作者: S.E. Zocholl , G. Benmouyal

DOI: 10.1109/TPWRD.2004.841304

关键词: Thermal resistanceControl theoryProtective relayThermal engineeringEngineeringDigital protective relayOvercurrentDifferential equationElectronic engineeringRelayPower-system protection

摘要: Standards specify an equation for the time-current characteristic of a thermal relay. When is published without reference to its derivation, it may be mistaken inverse-time overcurrent relay which if implemented would provide only marginal protection. This paper explains ambiguity introduced in standard and addresses protection from perspective model that provides optimum The employs MATLAB simulations compare dynamics with implementation during cyclic overloads.

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