Abstract: The high-voltage direct current（HVDC） transmission schedule for clean energy base rarely considers the demand of receiving grid. With the expansion of scale of outward delivery, it brings great pressure to the receiving grid for the safe and stable operation. So, a generation scheduling model of inter-regional HVDC generation and transmission system considering conditional section combined with receiving end is proposed. A step power adjustment model for the HVDC power is built to satisfy various constraints on HVDC tie-line, make full use of the flexible characteristics of HVDC tie-line and improve the executability of HVDC tie-line scheduling. On the other side, the joint dispatching model of cascaded hydropower plants in sending end is established to meet the operation constraints of vibrational region for hydropower units, and to ensure the priority of clean hydropower resources and the engineering practicability of the hydropower schedule. Furthermore, the model of conditional control section is established, which can effectively deal with the coupling problem between the power limits of section and the number of running units, so as to ensure the safe and stable operation of related sections. Based on the actual data of an inter-regional interconnected power grid, the validity of the model is verified. The proposed method can promote the accommodation of inter-regional clean energy, reduce the supply cost of large power system, and alleviate the pressure of safe and stable operation in the receiving system.