Residual Overvoltage Protection 59N Study of Settings Across Leading Protection Relay Manufactures

This paper presents a study focusing on the settings for residual overvoltage protection 59N within distribution networks MV and transmission networks HV. The research examines the practices employed by the leading relay protection manufacturers-Siemens, ABB, and Schneider Electric. The study delves into the principles underlying the operation of the 59N function and investigates the various methodologies utilized by these manufacturers to determine the zero-sequence voltage value.