【作者】 周明华；

【导师】 徐敏；

【作者基本信息】 南昌大学 ， 电力系统及其自动化， 2007， 硕士

【摘要】 随着电力市场的不断发展，实时电价已逐渐成为电力市场中的重要研究课题之一。文章主要对实时电价所包含的丰富的经济信息、反应系统的运行状态以及在线实时电价快速计算的算法作了初步的分析与探讨。本文首先对国内外的电力市场和电力市场下的电价作了介绍；接下来对电力系统最优潮流的数学模型和算法进行了相关的论述；然后本文把最优潮流(OPF)这一电力系统优化工具用于实时电价的计算，给出了基于原对偶内点算法的实时电价模型，并讨论了向心参数的取值对该算法收敛性的影响；在此基础上引入预测校正环节，该方法能很好地协调解的最优性和可行性之间的关系，改善了算法的收敛性；最后本文采用一5节点系统三种负荷下和IEE14节点标准测试系统进行了实时电价计算，利用原对偶内点算法Lagrangian乘子丰富的经济信息对节点实时电价进行了分析讨论，并对算法性能进行了分析讨论，得出了一些重要结论。对仿真结果的分析表明了有功边际成本比无功边际成本要大得多；在系统燃料费用最小的情况下，系统并不一定是最安全的；相应不等式约束的Lagrangian乘子的值代表系统运行安全费用，预测校正法迭代次数少，收敛性好等等。更多还原

【Abstract】 The Spot Price is becoming a more and more important subject in the electricitymarkets, with the fast development of the electricity markets. This paper presents thepreliminary analysis and research about the rich rich economic information includedin Spot Price, how to response system operation and algorithm adapted Spot Pricerapid calculation on line.This paper first introduces the domestic and abroad Electricity Markets andelectricity price of Electricity Markets.Secondly, the model and algorithm of OptimalPower Flow is described.Then a optimization tool—Optimal Power Flow is appliedin the calculattion of Spot Price.The model of Spot Price based on Primal-dualinterior point algorithm is introduced. It is discussed that the value of centralparameter effecting on the convergence of the primal-dual interior point algorithm,based on which a predictor-corrector technology is adopted to enhance theconvergence by coordinating the optimality and feasibility.In the end,it is finishedthat the calculation of 5-bus system and IEEE14-bus system Spot Price,thediscussion of Spot Price based on rich economic information of algorithm’sLagrangian multiple and the analysis of algorithm’s calculation performance.It drawsome important conclusions.The calculation and analysis illustrate that:marginal costof active power is much greater than the marginal cost of reactive power; minimizingthe cost of fuel in the system, the system is not necessarily the most security; thevalue of Lagrangian multiple of the relevant inequality constraint meaning the secureprice of the system operating and the predictor-corrector algorithm’s less iterativetimes and better convergence etc.更多还原