Estrategia de detección y localización de fallas para el esquema de protección distancia en redes con alta penetración de energía renovable de tipo eólica

Because of the increase in renewable sources participation in power systems globally, conventional protection schemes may lose reliability, security, and sensitivity to different failure events. Due to protection performance weakening, it is necessary to analyze the impact of Inverter-Based generation proliferation on protection schemes, identifying weak points, and proposing new schemes that meet new power systems’ needs. In this thesis’s particular, the distance protection scheme (21/21N) performance is evaluated, which is popular and effective in transmission networks due to its robustness to the operational scenario changes and the support it provides for adjacent elements failures. However, multiple studies indicate its loss of performance in scenarios with high penetration of renewable generation. Due to the harmful consequences of this protection’s failure on the system’s stability, the search for alternatives that mitigate the impact of new generation sources on this protection scheme has become a topic of great interest in the academic and industrial community. In this thesis, an algorithm is presented to increase the distance protection performance based on the correction of the apparent impedance seen by the protection relay using position and fault resistance estimations. Achieving notable increases in protection scheme safety and sensitivity for failures in adjacent elements failures improving its performance as backup protection. Also, a generic EMT model of a type IV renewable generator is presented as a controlled current source, which evaluates the impact of different inverter control strategies on the protection scheme’s operation.

• Autores: Sánchez Muñoz, David Alejandro
• Tipo de recurso: Work document
• Fecha de publicación: 2020
• Institución: Universidad Nacional de Colombia
• Repositorio: Universidad Nacional de Colombia
• Idioma: spa
• OAI Identifier: oai:repositorio.unal.edu.co:unal/78976
• Acceso en línea: https://repositorio.unal.edu.co/handle/unal/78976
• Palabra clave: 620 - Ingeniería y operaciones afines; Generación Basada en Inversores; Sistema de Protección; Corrientes de Falla; Protección Adaptativa; Teleprotección; Inverter Based Generation; Protection System; Fault Currents; Adaptative Protection; Teleprootection; Wind Farm Type IV
• Rights: openAccess
• License: Reconocimiento 4.0 Internacional