Planning of Cascade Hydropower Stations with the Consideration of Long-Term Operations under Uncertainties

Table 2

Decision variables.

Types of variables	Symbol	Description
The planning stage	xi	1 if hydropower station i is chosen, 0 otherwise
	Capi	The maximum capacity of hydropower station candidate i
The operational stages		Water storage of candidate i at stage t under scenario s (m^3)
		Loss flow of candidate i at stage t under scenario s (m^3/h)
		Water discharge to downstream in candidate i at stage t under scenario s (m^3/h)
		Water discharge of power generation in candidate i at stage t under scenario s (m^3/h)
		Water spill in candidate i at stage t under scenario s (m^3/h)