Sustentación virtual tesis doctoral
El próximo miércoles 27 de mayo a las 8:30 a.m. el estudiante doctoral, Juan Ramón Camarillo, sustentará su tesis titulada Geometric Understanding of Faults and Voltage Sags, and Out-of-step Protection in Modern Power Systems asesorada por el profesor asociado del Departamento de Ingeniería Eléctrica y Electrónica, Gustavo Ramos López.
La presentación será en español.
Breve resumen de la tesis:
Electric power systems are exposed to unpredictable faults. These faults affect the system and its consumers, especially those who use electronic loads. Faults disturb power quality (PQ), reliability, and security. One of the consequences of faults in power systems is voltage sags. A voltage sag is a decrease in the RMS value between 10% - 90% of the nominal voltage. Voltage sags are important disturbances that affect sensitive industrial processes, which can cause losses. Voltage sag study is critical to predicting the effect of the events on sensitive loads and industrial processes. Since voltage sags are the most common PQ disturbances, there is an interest in analyzing, classify, and characterize them. Voltage sags are characterized by their duration, phase-angle jump, and point-on-wave of initiation and recovery, and these characteristics are not under the control of the system operator. Thus, algorithms to extract additional information from fault data and to classify faults are needed to locate and isolate it as fast as possible to reduce the voltage sag duration and provide additional information to provide support to the system operator.
In the second part, a literature review that shows the gap that I am trying to solve: an OOS protection algorithm that correctly identifies stable and unstable power swings and operates before the first swing. The second component is the development of a platform for testing commercial relays. The platform is presented for testing distance protection, but it is used for testing OOS functions since both functions are based on the same principle: impedance measurement. A new way of constructing the comparators necessary to identify the zone in which the measured impedance located is proposed. It is proposed and proved in a test system. The third component is the development of a new methodology of OOS protection in the time domain. The two parts of the document are tied since the proposed OOS protection function is based on the geometric analysis developed in the first part.