Through the research of the EHV DC transmission model

it is found that the static recovery relationship of the voltage dependent current order limiter（VDCOL） and the method of obtaining compensation voltage have a great influence on the continuous commutation failure. At the same time

changing the slope of the function used by VDCOL and the method of obtaining compensation voltage is beneficial to reducing the continuity number of commutation failures. In order to reduce the possibility of continuous commutation failure. In this paper

a design scheme of precise variable slope voltage dependent current order limiter based on virtual resistance current-limited control method is proposed. The CIGRE standard test model in PSCAD is used to carry out the relevant simulation. Finally

the validity of the design control method proposed in the single-phase and three-phase ground faults to suppress continuous commutation failure is verified by analyzing the relevant data.