Abstract: In this paper,the transmission line is taken as the research object,and the new energy fault control method is studied to improve the adaptability of distance protection in the new energy power system. Firstly,the influence mechanism of fault resistance and inverter control on distance protection is analyzed. Then,a new energy fault control strategy is proposed to adjust the output characteristics of new energy actively so that the fault supplementary impedance is converted to pure resistance. Then,the trigonometric relationship among measured impedance,effective fault impedance and fault supplementary impedance is derived from the impedance complex plane,and the effective fault impedance is obtained,so as to improve the fault resistance capability of distance protection in the new energy system. Finally,MATLAB/Simulink simulation is used to verify the effectiveness of the proposed method,which provides a theoretical basis for the coordination of the protection and control of the new energy transmission line.