Title :
A New Weak Fault Component Reactance Distance Relay Based on Voltage Amplitude Comparison
Author :
Nengling, Tai ; Chen, Chen
Author_Institution :
Shanghai Jiaotong Univ., Shanghai
Abstract :
A new weak fault component reactance distance relay is proposed in this paper. By adaptive setting of the compensated voltage, the scheme synthesizes the performance of the impedance distance relay and the reactance distance relay. The distance protection relay on the receiving end will misoperate when the fault resistance is larger than the critical resistance. So a new switching criterion is applied to eliminate this disadvantage. Based on that, the proposed scheme can detect the fault with the high fault resistance in the setting coverage, regardless of whether the relay is located at the receiving end or the sending end. Test results from the simulation and experimental conditions show that the new scheme is successful in detecting the internal fault. It has higher sensitivity and selectivity during different conditions than the traditional fault component protection schemes.
Keywords :
fault location; power system faults; relay protection; distance protection relay; fault component protection; fault resistance; impedance distance relay; internal fault detection; reactance distance relay; voltage amplitude comparison; weak fault component reactance; Circuit faults; Fault detection; Impedance; Power system faults; Power system protection; Power system relaying; Power system transients; Protective relaying; Testing; Voltage; Distance relay; fault component; high resistance fault; impedance relay; reactance relay; receiving end; sending end;
Journal_Title :
Power Delivery, IEEE Transactions on
DOI :
10.1109/TPWRD.2007.911161