Abstract: Northwest, north, and northeast China of abandoned wind and abandoned light has been the big problem restricting the development of new energy. It can ensure the stability and effectively of system and improve the ability of new energy accommodation by making the appropriate configuration scheme of wind-PV-thermal-bundled power system. According to the historical weather data combined with new energy output data, this paper determines the wind and photovoltaic output characteristics, develops different wind-PV-thermal-bundled power schemes, and takes the annual output and daily output curves of load as sending electrical curves to calculate and analyze the new energy utilization, waste electricity and other indicators. Finally, this paper chooses the optimal scheme. The power allocation optimization is completed for the ±800 kV Hami-Zhengzhou HVDC transmission project, whose results show that, in the wind-PV-thermal-bundled power system, the new energy accommodation is mainly affected by the capacity allocation ratio, power peaking capacity, the synchronous output of new energy and load.

Key words: power allocation, wind-PV-thermal-bundled power, new energy accommodation, output characteristic, load curve, power transmission curve