Comparative Study of WAMS-Based Transmission Line Fault Detection and Protection Techniques

Abstract

AbstractWide area measurement systems (WAMS) based fault detection and protection techniques are gaining more importance with the increase in the number of phasor measurement units (PMUs) installed in the transmission network. PMUs help to attain a more accurate situational awareness of the power system. WAMS-based techniques have made the real-time monitoring and control of the power system possible and thereby help to avoid unnecessary collapse and blackouts of the system. PMUs located at the substations are able to send the time-stamped phasor information of the voltages and currents at a rate of one sample per cycle to a phasor data concentrator (PDC) located at a central control center. Suitable algorithms can be developed to analyze the situation and to make appropriate decisions for the protection of the system by processing the data. This paper presents a comprehensive analysis of transmission line protection schemes using WAMS-based data and compares the fault location techniques developed using WAMS-based data from the purview of series compensated lines.KeywordsWide area measurement systemPhasor measurement unitPhasor data concentratorsFACTSTransmission line protectionCompensated lines