Considering the characteristics of wind farm and the structural features, receiving-end grid, the transient voltage stability of receiving-end grid incorporating with doubly-fed wind farm is evaluated. This paper proposes two indexes which are voltage severity and critical clearing time to evaluate transient voltage stability from the perspective of severity and possibility. Based on the proposed indexes, the qualitative relationship between fault point location, wind power penetration rate and transient voltage stability of receiving end grid considering wind speed disturbance and fault disturbance is studied and instability risk of transient voltage is quantified. Results of assessment for receiving end grid incorporating wind farm built in DIgSILENT/PowerFactory simulation platform verify the effectiveness of the proposed method.