Determinación de métodos de control del voltaje transitorio de restablecimiento durante la desenergización de reactores conectados en barras de 500 kVn

Abstract

The current work analyzes and determines the different mitigation methods for control of high values of transit recovery voltage (TRV), present during the opening operation of (bar reactors / control rods?) at a voltage level of 500 kV, making use of a general case taken from the technical bibliography. For its analysis it is necessary to conduct a detailed model in ATP Draw of a typical bar reactor bay, in addition to implementing the combined model of Cassie and Mayr that permits describing the dynamic performance of the arc between the power switch terminals. For its simulation, one may determine that the current chopping values result in being more severe during the opening operation, of the obtained data from the TRV in the two different case studies, it proceeds to characterize to the TRV thus determining its wave form, maximum value, and growth rate of rise of recovery voltage(RRRV), these data are the ones that determine the methods required to control and mitigate its effects, such as: the reignition of the arc and the voltage scaling/rising; that therefore causes damage in the equipment associated with the reactor.