分散松弛因子在节点电价分解中的应用  

Application of Participation Factors to LMP Decomposition

作　　者：谢云岩[1] 彭建春[1] 曾顺意[1] 曲桂颖[1] 宋小明[1] 

机构地区：[1]湖南大学电气与信息工程学院,长沙410082

出　　处：《电力系统及其自动化学报》2011年第4期83-88,共6页Proceedings of the CSU-EPSA

摘　　要：提出一种分散松弛因子的确定方法。这种方法以当前仍具有有功调节能力的发电机组(边际机组)为对象,先计算边际机组有功出力对负荷有功的灵敏度,再按与灵敏度成正比的方法确定分散松弛因子,继而将这种分散松弛因子应用于电力市场中广泛采用的基于直流最优潮流的节点电价分解模型中,弥补了常规算法无法正确反映边际机组的缺陷。数字仿真结果验证了该方法的有效性。A method has been developed to determine the participation factor , which deals with those so-called marginal generators that still have capability of active power adjustment. Firstly, calculate the sensitivity coefficient of marginal units＂ active power with respect to load＇s, then determine the participation factor which proportional to the sensitivity coefficient . The participation factor is applied to the price decomposition model, which is based on Direct Current Optimal Power Flow （DC-OPF） andwidely implemented in electricity market, compensating the conventional algorithms＂ deficiency that can not correctly reflect the marginal units. The effectiveness of this approach is demonstrated by digital simulation.

关 键 词：电力市场 电价分解 节点边际电价 分散松弛因子 最优潮流 

分 类 号：TM731[电气工程—电力系统及自动化]