Fault detection in transmission networks of power systems

A new methodology of fault location for predictive maintenance of transmission lines

“…There are many articles that present, in addition to methods for faults location [4][5][6][7][8], methods for detection and classification [4,10,28,29].…”

Unsymmetrical fault diagnosis in transmission/distribution networks

“…Model Based fault detection approaches have been applied to a variety of engineering systems over the last a few of decades [17][18][19][20][21][22][23][24][25][26][27] because of their online fault detection capability. These approaches are based on the generation of a residual signals (using observer theory) that reflect the difference between the actual and estimated values of the output as an indicator of fault occurrence.…”

“…Such approaches require comprehensive fault dependent state space models of the system under study [28]. Even though model based fault detection approaches have been successfully implemented in aerospace industry [26,27], chemical industry [24] for on line fault detection, a very few model based fault detection approaches have been reported in the open literature that adequately deal with the problem of unsymmetrical fault detection in power system transmission/distribution lines; note that the model based power system fault detection approaches reported in [17][18][19][20][21] deal only with symmetrical faults. The main reason behind the absence of progress in this area of application may be attributed to the lack of development of fault dependent state space models suitable for use in existing model-based fault detection design theory.…”

Effective method of subsynchronous resonance detection and its limitations

“…There are several methods known from literature [3,[5][6][7][8]10,18] for the SSR detection. The disadvantage of those methods is the presence of a time delay between the appearance of the subsynchronous resonance phenomenon and its detection.…”