Leite , Jandecy, Manoel Azevedo, Rivanildo Almeida, Ignacio Abril, Rildo Nogueira, Hudson Santana, and Walter Valenzuela. 2016. “Power Quality Analysis Substation the Voltage Level of 138 KV”. ITEGAM-JETIA 2 (6). https://itegam-jetia.org/journal/index.php/jetia/article/view/167.