Evaluation of the transient recovery voltage and load rejection in a half-wavelength transmission line.

• Grant number: 12/17138-2
• Support Opportunities: Scholarships in Brazil - Master
• Effective date (Start): December 01, 2012
• Effective date (End): February 28, 2013
• Field of knowledge: Engineering - Electrical Engineering - Power Systems
• Principal Investigator: Maria Cristina Dias Tavares
• Grantee: Thyago de Moura Jorge
• Host Institution: Faculdade de Engenharia Elétrica e de Computação (FEEC). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil

Abstract

The objective of this research prof high volta deste projeto de pesquisa é avaliar o comportamento dos disjuntores dge circuit breakers that can be used in a transmission line with a little more than a half wavelength (AC Link) against the transient recovery voltage (TRV) and the electrical transmission system behavior when subjected to load rejection.To perform this work it will be studied and analyzed the requests imposed to the circuit breaker that will maneuver the AC Link, according Operador Nacional do Sistema (ONS) procedures, besides being performed a sensitivity analysis, considering the variation of some electrical system parameters. These simulations aims verify the behavior of TRV and compare results with the current standards, verifying the needs of any special requirements to ensure proper performance of high voltage circuit breakers to be used in a transmission line in half wavelength. In addition to this study it will be analyzed cases of load rejection, according ONS procedures to determining the maximum of transient and sustained overvoltages that may occur in the electrical system for different load conditions.The electrical system under study will be modeled and studied using a time domain simulation tool of eletromagnetic transients phenomena in electric power systems, the software PSCAD / EMTDC. Posteriorly, some specific situations may be analyzed using the RTDS " (Real Time Digital Simulator) in order to compare the results obtained and allow training with this equipment.

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

JORGE, Thyago de Moura. Evaluation of circuit breaker requests of just over half wavelength transmission line. 2018. Master's Dissertation - Universidade Estadual de Campinas (UNICAMP). Faculdade de Engenharia Elétrica e de Computação Campinas, SP.