Stochastic Dynamic Economic Dispatch Models of Ultra High Voltage AC-DC Hybrid Grids Based on Approximate Dynamic Programming

For the ultra high voltage (UHV) AC-DC hybrid grid, the network losses generated on the transmission channel can be reduced by optimizing the active power allocation of the inter-provincial AC-DC transmission channel. An optimal power allocation model for the transmission channel of the UHV AC/DC hybrid grid is established in this paper to improve the system operation economy. And the state-space approximate dynamic programming method is used to solve the model. It provides a guiding significance for the preparation of contact line power plan of AC-DC hybrid power grid.It provides guiding significance for the preparation of contact line power plan of ACDC hybrid power grid.It can provide guidance for the preparation of contact line power plan of AC-DC hybrid power grid.