论文标题
考虑深度骑自行车的影响的单位承诺
Unit Commitment Considering the Impact of Deep Cycling
论文作者
论文摘要
风能已集成到电力系统中，希望它可以提高能源效率并减少温室气体排放。然而，世界上的一些研究表明，结果是以相反的方式希望，这主要是因为风的可用性与负载之间存在负相关性。在这种情况下，煤炭发电厂被迫骑自行车，而它们并非旨在这样做。为了防止这种不必要的结果发生，单位承诺决策应包括在上升/下降过程中使用燃料和排放率。本文提出了一个新的单位承诺决策过程，以适应与坡道过程相关的经济和环境成本。总体而言，成本不是凸的，因为如果发电机的输出发生明显变化，则无论方向如何，就会有正成本。结果，问题可能是非convex。引入了零件线性成本曲线，以建模坡道过程的影响。借助曲线，制定了凸线性编程，并讨论了政府政策的影响。
Wind energy has been integrated into the power system with the hope that it improves the energy efficiency and decreases greenhouse gas emission. However, several studies over the world imply that the result was in the opposite way that was hoped mainly because of the negative correlation between wind availability and load. Under the situation, coal power plants are forced to cycle while they are not designed to do so. To prevent this unwanted result from occurring, a unit commitment decision should include the use of fuel and the emission rate during the ramp up/down process. This paper proposes a new unit commitment decision process to accommodate the economic and the environmental costs associated with the ramping process. The costs are, in general, not convex because there is positive cost if a generator output changes significantly regardless of directions. As a result, the problem might be nonconvex. A piece-wise linear cost curve is introduced to model the impact of ramping processes. With the curve, a convex linear programming is formulated, and the impact of a governmental policy is discussed.
