The paper proposed a new fault location unaffected by transmission line parameters (TLPs) to eliminate the errors of the existing one caused by TLP variations. To get the new fault location, firstly the unit impedance expression is derived based on the lumped parameter circuit model and the basic principle that at faulty point voltages calculated from both terminals can be equal. Then an easy location equation is got by eliminating the unit impedance based on the sequence component method, so that the fault point can be also located when the values of TLPs are unknown. Simulation results show that the new fault location where the faulty point is solved without iteration and search is reliable, effective, and precise, and has a good practical value.