Multi-stage Low Carbon Robust Dispatch of Integrated Electricity and Heat System Considering Carbon Capture and Wind Power Uncertainty

To realize low-carbon power and promote the grid-connection and accommodation of renewable energy, it is necessary to realize the balance among low-carbon, economic and stable in the operation of power grid. For this reason, a multistage robust optimization of low-carbon dispatching method for electro-thermal combined system, in which the uncertainty of carbon capture and wind power output were taken into account, was proposed. Firstly, the modeling of combined heat and power (abbr. CHP) system, in which such multi flexible resources as carbon-capture and temperature controlled load and so on were considered, was carried out. Secondly, the error of wind power prediction was depicted by box uncertain set. Thirdly, considering carbon quota and the revenue from carbon transaction a multistage robust optimization low-carbon dispatching model of CHP system was put forward. This model could be adjusted according to practical wind power output in each time interval to make the economic and low-carbon composite cost in the subsequent time interval minimized, and then, this model was solved by robust Dual dynamic programming algorithm. Finally, the role of the put forward model in the aspect of improving low carbon economic level of electrothermal coupling system was verified by computing example.