Análise do desempenho de uma função de proteção considerando efeitos de erros na rede de comunicação entre equipamentos.

Abstract

Using the IEC 61850, which defines communication within power plant substation via network, it becomes evident the necessity of study the interference of problems inherent to computer networks for critical and internal functions in substation. This report describes a study of the influence of these delays, given an increase in the amount of traffic on the network and any possible packet loss in the response of the instantaneous overcurrent protection function. For such, IEDs will be emulated in computers exchanging messages in a local area network. To perform the experiment, an electrical system protection function was executed, in this case, the instantaneous overcurrent function. Then, in a computer network, using three and a switch, a simulation of the exchange of messages between the TC, IED, and the circuit breaker was performed to evaluate the effectiveness of the function for various network problems and message rates.