Adaptive protection for series compensated EHV transmission systems using neural networks

A series compensation technique has been employed to improve power transfer in long-distance transmission systems world-wide. However, this in turn introduces problems in conventional distance protection. The complex variation of line impedance is accentuated as the capacitor's own protection equipment operates randomly under fault conditions. This paper proposes a novel adaptive protection scheme for a series compensated transmission system by using a neural network approach. >