When the correlation of wind power output among farms is not considered, integrated stochastic characteristics will be captured accurately. Using this inaccurate feature may lead to an impractical even a failing result unit commitment (UC). Therefore, paper proposes multiple correlations model for forecast errors (WPFEs), and capture in UC problem, two-stage chance-constrained interval (CIUC) p...

Due to the high randomness and volatility of renewable energy sources such as wind energy, traditional thermal unit commitment (UC) model is no longer applicable. In this paper, in order reduce possible negative effects an inaccurate forecast, chance-constrained programming (CCP) method used study UC problem with uncertainty power generation, chance constraints balance spinning reserve are sati...

This study proposes a novel binary optimization method for solving unit commitment (UC) problems. Developed from moth-flame (MFO), the proposed is called alternative MFO (BAMFO). Originally, each moth restricted to fly toward predetermined flame (solution), causing it be trapped in local optimum of that and reducing its performance. To address these drawbacks, BAMFO represents four characterist...

Unit Commitment (UC) is important for power system operations. With increasing challenges, e.g., growing intermittent renewables and intra-hour net load variability, traditional mathematical optimization could be time-consuming. Machine learning (ML) a promising alternative. However, directly good solutions difficult in view of the combinatorial nature UC. This paper synergistically integrates ...

Renewable energy sources (RES) such as wind turbines (WT) and solar cells have attracted the attention of power system operators users alike, thanks to their lack environmental pollution, independence fossil fuels, meager marginal costs. With introduction RES, challenges faced unit commitment (UC) problem a traditional optimization aiming minimize total costs by optimally determining units’ inp...

Unit Commitment (UC) is an important problem in power system operations. It traditionally planned for 24 hours with one-hour time intervals. To accommodate the increasing net-load variability, sub-hourly UC has been suggested improved flexibility. Such a larger and more complicated than hourly because of increased number periods reduced unit ramping capabilities per period. The computational bu...

Universal composability (or UC security) provides very strong security guarantees for protocols that run in complex real-world environments. In particular, security is guaranteed to hold when the protocol is run concurrently many times with other secure and possibly insecure protocols. Commitment schemes are a basic building block in many cryptographic constructions, and as such universally com...

The unit commitment (UC) problem aims to find an optimal schedule of generating units subject to demand and operating constraints for an electricity grid. The majority of existing algorithms for the UC problem rely on solving a series of convex relaxations by means of branch-and-bound and cuttingplanning methods. The objective of this paper is to obtain a convex model of polynomial size for pra...

An effort to develop a unit commitment approach capable of handling large power systems consisting of both thermal and hydro generating units offers a large profitable return. In order to be feasible, the method to be developed must be flexible, efficient and reliable. In this paper, various proposed methods have been described along with their strengths and weaknesses. As all of these methods ...