DC Fault Detection and Location in Meshed Multiterminal HVDC Systems Based on DC Reactor Voltage Change Rate

• Published in: IEEE transactions on power delivery Vol. 32; no. 3; pp. 1516 - 1526
• Main Authors: Li, Rui, Xu, Lie, Yao, Liangzhong
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.06.2017; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Circuit breakers; Circuit faults; Circuits; Converters; Current measurement; DC fault protection; dc reactor voltage change rate; Electric potential; Electromagnetic noise; Fault currents; Fault detection; HVDC transmission; Immunization; Inductors; meshed multiterminal HVDC system; modular multilevel converter (MMC); Power flow; Voltage; Voltage measurement

The change rate of the dc reactor voltage with predefined protection voltage thresholds is proposed to provide fast and accurate dc fault detection in a meshed multiterminal HVDC system. This is equivalent to the measurement of the second derivative of the dc current but has better robustness in ter...