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摘要变压器经济运行即在一定负荷下，通过优化变压器的运行方式，以确定最佳负荷频率和合理的变压器状态来实现最经济的运行。在电力系统中，变压器是重要的组成部分，电力系统运行会产生较大的能量损耗，其中变压器的损耗占大多数，所以提高变压器的经济运行的经济性，提高供电可靠性，节约电能实现节电增效，并且全方位开展变压器经济运行是实现电力系统经济运行的重要内容。46133
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本文着重研究变压器经济运行优化调度问题。求解变压器损耗问题的过程中，通过引入了潮流计算，针对研究变压器各种运行方式下损耗计算的方案，构造出了单时段变压器经济运行优化调度方案问题的数学模型，应用牛顿—拉夫逊潮流算法求解该问题，并利用matlab编程给出了求解具体过程。基于理论分析，通过单时段变压器经济运行研究，指出变压器经济投切的适当时机，使变压器运行方式得到优化。运行结果表明，该方法可以有效地降低变压器的功率损耗，具有较好的经济效益。
毕业论文关键词：电力系统；变压器经济运行；潮流计算；牛顿一拉夫逊法；
ABSTRACT Economic operation of transformer that is under a certain load by optimizing transformer operation mode, in order to determine the optimum frequency adjustment and reasonable load transformer, the transformer state to achieve the most economical operation.
In power system, the transformer is an important part of power system operation will produce larger energy loss, which the transformer loss a majority, so improve the efficiency of economic operation of transformer, improve power supply reliability, managing electric energy to achieve energy-saving efficiency, and carry out all the transformer economic operation is the important content to realize economical operation of power systems.
This paper focuses on the economic operation optimization scheduling problem. of rhe transformer. To solve the transformer loss problem in the process, by introducing the power flow calculation, transformer loss calculation under various operation modes for research plan, constructed a single time, the mathematical model of transformer economical operation problem of the optimization scheduling solution, using Newton - Ralph monson tide algorithm to solve the problem, and use the Matlab programming, the specific process are presented. Based on theoretical analysis, through single transformer economical operation during study, points out the appropriate time, transformer economic transformer operation mode was optimized. The running results show that the method can effectively reduce the power loss of transformer has good economic benefit.
Keywords: power system；economic operation of transformer；power flow calculation ；Newton a Ralph monson flow algorithm；
目 录
第一章 绪论 1
1.1研究背景及意义 1
1.2国内外研究现状 1
1.3本课题的研究内容 3
第二章 变压器经济运行的基本理论 4
2.1变压器经济运行概念 4
2.2变压器的结构、原理和分类 4
2.3现有的研究变压器经济运行方法 5
2.4本章小结 6
第三章 单时段变压器经济运行 7
3.1前言 7
3.2基于潮流计算的单时段变压器经济运行 7
3.3潮流计算中变压器的处理方法 12
3.4本章小结 15
第四章 算例分析 16
4.1算例 16
4.2matlab仿真 18