Release Time:2019-03-10  Hits:

Indexed by: Conference Paper

Date of Publication: 2017-05-21

Included Journals: Scopus、CPCI-S、EI

Page Number: 500-510

Key Words: short-term hydro scheduling; prohibited operating zones; head effect; peak shaving; mixed-integer linear programming

Abstract: Head-sensitive prohibited operating zones are a critical challenge for short-term scheduling of cascaded hydropower plants for peak shaving. These prohibited operating zones add discrete characters to the nonlinear hydropower scheduling problem, making it tough to handle. This paper establishes a mixed-integer linear programming (MILP) model for short-term hydro scheduling with head-sensitive prohibited operating zones. The Min-Max objective function, plant performance curves and head-sensitive prohibited operating zones are mainly focused on. The Min-Max objective function is linearized via introducing linear combinations of constraints. The plant performance curves are linearized by a piecewise linear approximation. The avoidance of prohibited operating zones is incorporated into the linearization of plant performance curves so that head effect is captured. The case study of a two cascaded hydropower system is solved by LINGO. Numerical results show that the proposed MILP model is efficient and suitable for short-term hydropower optimal scheduling with prohibited operating zones for peak shaving.