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This paper presents an intelligent approach for detecting power swing for distance relay operation. The proposed scheme uses time-frequency transform known S-Transform for feature extraction. It is based on S-Transform analysis on the active power measured at distance relay point in transmission line. The proposed scheme overcomes the traditional relay scheme drawback, by detecting and discriminating...
Disturbances in a power system such as line switching and sudden removal of faults may cause instability which lead to the power swing phenomenon. During a power swing, the mal-operation of distance relay is among the problem which needs to be solved. In the case of a power swing, a distance relay is designed to block detection to avoid wrong interpretation of relay current signals. However, this...
Current distance relay is accommodated with Power Swing Blocking (PSB) scheme. However, this blocking scheme prove to vulnerable to distance relay operation as it could block the trip signals if the symmetrical fault occur during power swing. Hence, it is important to develop the proper fault detection scheme during power swing to avoid such undesirable circumstances. This paper presents a new detection...
Distance relay is designed to operate when fault occurs in the system, but still should block the operation when power swing occurs in the system. However, this blocking scheme prove to vulnerable to distance relay operation as it could block the trip signals when a genuine fault occurs in the system during power swing. Hence, it is desired to develop the proper fault detection technique during power...
Contingencies in power system caused oscillation in rotor angle which leads to power swing. In the case of power swing, distance relay is designed to block the operation to avoid wrong operation of relay. However, this blocking scheme proves to vulnerable as it could block the trip signals when a fault occurs during power swing. Hence, it is desired to develop the proper fault detection technique...
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