PROJECT TITLE :

Variable Resource Dispatch Through Do-Not-Exceed Limit

ABSTRACT:

Due to the variability of renewable resources, the ISO tries to spot do-not-exceed (DNE) limits, that are the utmost renewable generation ranges that the ability system can accommodate without sacrificing system reliability. The matter is formulated as an optimization drawback whose objective is to search out the biggest operating ranges of variable resources such that the system remains feasible underneath any generation realizations at intervals the range. Computing the DNE limits can be conceptually translated into finding the most important uncertain set of a robust optimization drawback. Relying on the assumptions on how the system responds to the uncertainty of renewable resources, 3 different approaches are developed to convert the nonstandard strong optimization drawback into linear programming, bilinear programming and two-stage strong optimization issues, respectively. Although the linear programming drawback is less complicated to resolve as compared to the other two alternatives, its resulting DNE limits are the most conservative. Thus, the trade-off wants to be thought of when deciding that approach is the most acceptable in real-time operation. A five-bus system and the ISO New England Power System are used to check the proposed approaches.