Ajuste de las protecciones y limitadores de excitación de las unidades de generación de Coca Codo Sinclair considerando la modelación del regulador de voltaje y la curva de capacidad

Abstract

In this thesis, a compendium of procedures, norms and techniques are made for the adequate coordination between under excitation protection, capability curve and UEL (under excitation limiter); in addition to the configuration of the V/Hz relay and V/Hz limiter of the automatic voltage regulator. This methodology is applied to the generation units of the Coca Codo Sinclair Hydroelectric Power Plant, for which a model of the control system is made, in order to have the closest idea about its actual operation, since the data presented for the parameterizations were obtained in field. In order to apply and observe the results of the coordination method, simulations were executed in DIgSILENT software using an equivalent of Ecuador’s National Interconnected System. This is where the models of the automatic voltage regulator (AVR), power system stabilizer (PSS), speed regulator (PCU), under excitation limiter (UEL), V/Hz limiter, under excitation and over excitation protections are unified; achieving the necessary configurations based on the simulated events, with the aim of fulfilling the proposals of this work.