Impacto de Limites Térmicos Dinâmicos de Linhas de Transmissão na Operação de Sistemas Elétricos de Potência (Impact of Dynamic Thermal Limits of Transmission Lines on Power System Operation)

Benedito Isaias Lima Lopes (, Rodnei Dias dos Anjos (, Antônio Carlos Zambroni de Souza (, Adriano Batista Almeida (, Rafael Coradi Leme (, Pedro Paulo Balestrassi (

2Universidade Federal de Itajubá

This paper appears in: Revista IEEE América Latina

Publication Date: March 2016
Volume: 14,   Issue: 3 
ISSN: 1548-0992

This paper discusses a methodology to determine the ampacity of transmission lines based on their dynamic thermal limits. In this sense, temperature, wind speed, season conditions, and system loading are taken into account, rendering a methodology that determines, for each operating point and weather condition, the actual thermal limit of a transmission line. The proposed technique is tested in a real scenario and compared with the technique currently employed for this purpose.

Index Terms:
dynamic thermal limits, ampacity, security inequation.   

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