Abstract
This paper proposes an enhanced operating characteristic of One-coil Permanent Magnetic Actuators (PMA) applied to protection devices in power systems such as circuit breakers and switches. A Finite Element Method(FEM) was used to design the PMA. A short circuit switching test was performed with a recloser in which a prototype PMA was applied and an additional test was conducted after improving the recloser based on the analysis derived from the previous short circuit switching test. From the test result, data on the operating characteristics according to the weight of the mover and the design of the opening spring was obtained. The resulting data obtained will be helpful in designing a future power system protection device to which a One-coil PMA is applied.
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More From: The transactions of The Korean Institute of Electrical Engineers
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