3.1.1. Objective Function

According to the above modeling concept, the optimization objective of the impartiality and openness power dispatching model is to minimize the total power generation costs.

$$\min f = \sum\_{i=1}^{N} \sum\_{t=1}^{T} (a\_i p\_{i,t} \,^2 + b\_i p\_{i,t} + c\_i u\_{i,t} + s\_{i,t}) \tag{2}$$

where, *ai*, *bi*, and *ci* are the power generation cost coe fficients of unit *i*; *pi*,*<sup>t</sup>* is the scheduled output of unit *i* at time interval *t*; *ui*,*<sup>t</sup>* is the commitment state of unit *i* at time interval *t*; *si*,*<sup>t</sup>* is the startup and shutdown costs of unit *i* at time interval *t*; *N* is the total number of units; and *T* is the total number of time intervals.
