Avaliação da Proteção de Geradores Síncronos contra a Perda de Campo nos Planos R-X e P-Q
Keywords: Synchronous Generator, Loss of Field, Plano R-X, Plano P-Q, Function 40, EMTP-RV
AbstractIn this work, it is proposed a comparative evaluation between two protection schemes for synchronous generators against loss of excitation, based on the R-X impedance plane and the P-Q power plane. For this, a power system modeled in the EMTP-RV software was used to simulate cases of total and partial field loss, with different pre-disturbance load conditions of the generator, and considering the operation of generators in parallel. The results show that the traditional scheme is still a good tool in terms of operation time and reliability. However, the protection based on the P-Q plane is more flexible in terms of its setting.