The distance protection is the most common protection of the high voltage electric power transmission lines from all forms of faults. However, the distance protection measuring elements is not always effective during the earth faults through the high transient resistance. The developed algorithm is synthesized on the precise model of the protected object for the earth fault regime. There are obtained the estimations of the operation effectiveness for the new and classical algorithms of the distance measuring units during the different earth faults regimes, also, with different values of transient resistance in the place of the earth faults. The results of analysis are given. It is shown, that the new algorithm of the distance protection measuring elements is more effective than the classical algorithm. The distance protection is the most common protection of the high voltage electric power transmission lines from all forms of faults. However, the distance protection measuring elements is not always effective during the earth faults through the high transient resistance. The developed algorithm is synthesized on the precise model of the protected object for the earth fault regime. There are obtained the estimations of the operation effectiveness for the new and classical algorithms of the distance measuring units during the different earth faults regimes, also, with different values of transient resistance in the place of the earth faults. The results of analysis are given. It is shown, that the new algorithm of the distance protection measuring elements is more effective than the classical algorithm.