Travelling wave relay operation is based on propagated forward and backward electromagnetic waves initiated when short circuit occur in transmission line. The travelling wave's information's could be used to calculate the line impedance and signal the CB in faulty conditions. In this paper, traveling wave numeric relay based on analog signal processing is proposed to identify and locate the fault by using the information contained in the waves. The techniques are implemented in MATLABSIMULINK. Some cases of the fault are discussed in this paper.