电力系统潮流追踪问题研究.doc

  
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电力系统潮流追踪问题研究,1.98万字自己原创的毕业设计,今年最新的,仅在本站独家提交,大家放心使用摘要:在当前电力工业发展过程中,传统的电力垄断格局已然被打破,电力市场化改革成为其发展的重要方向。在此过程中,输电损耗分摊越来越受到人们的重视,它不仅对各个电力使用者的经济利益产生影响,而且左右了电力市场健康稳定的发展,因...
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电力系统潮流追踪问题研究

1.98万字
自己原创的毕业设计,今年最新的,仅在本站独家提交,大家放心使用

摘要:在当前电力工业发展过程中,传统的电力垄断格局已然被打破,电力市场化改革成为其发展的重要方向。在此过程中,输电损耗分摊越来越受到人们的重视,它不仅对各个电力使用者的经济利益产生影响,而且左右了电力市场健康稳定的发展,因此将网损公平、合理的分摊给每个使用者,已成为电力市场改革的热点与难点。
本文提出了一种新的基于比例分配原则的潮流跟踪模型,该模型将基本潮流和网损一起跟踪,并在潮流跟踪过程中实现对系统网损的分摊;同时,基于电流分解公理,证明了网损应该按电流比例分摊。最终提出将基本潮流与网损一起按照比例分配原则进行跟踪。
潮流跟踪作为输电费用分摊的重要理论依据,对其算法的研究已成为国内外学者讨论的热点。在对潮流跟踪技术进行深入研究的基础上,提出了一种基于比例分配原则的同时考虑基本潮流和网损的潮流跟踪模型。该模型将每个节点等效为有功和无功两个节点,构造比例分配矩阵,进行潮流跟踪,得到每台发电机和线路对地电容,分配给每个负荷的功率。
在制定潮流跟踪过程的算法之前,本文定义了节点注入功率向量用来记录各个等效节点的总注入功率,得到了比例分配系数矩阵,本文通过搜索比例系数矩阵实现潮流跟踪过程。最终得到各个发电机发出的功率到各个负荷的不同路径(供应链)及对应的功率大小。比例系数矩阵的搜索过程实际上是人工智能学科中先深度优先搜索,后广度优先搜索的过程。
最后,采用C语言将所提出的基于潮流跟踪网损分摊算法编写为程序,用结果证明该模型能够同时准确有效地进行损耗和基本潮流跟踪,为输电费用分摊提供了更科学的理论依据。
关键词:电力市场,潮流跟踪,比例分配原则,网损,输电服务,人工智能搜索


Research On The Problem of Power Flow Tracing
ABSTRACT:With the process of the current electric power industry development,the electric power industry monopoly pattern in the traditional way is being replaced by the market mechanism. Electric power market reform become important direction. More and more people care transmission losses allocation in the process.It not only affect the power user's economic interests, but also the electric power market health and development, So how to allocate loss to every user fairly and reasonably has become one of the hottest researchs for many scholars and electricity companies.
This paper presents a new model to follow the proportional sharing principlebased on the trend, the model will be the basic trend and loss with tracking, and realize the sharing of system losses in the power flow tracing process; at the same time, based on the current decomposition axioms,it proved that the lossshould be assessed according to the current ratio. Finally, the fundamentalpower flow and loss together according to the proportional sharing principle oftracking.
Based on the thoroughly analysis of power flow tracing methods, a new method of allocating both power flow and losses is presented, which grounds on proportional sharing principle. Each node is equivalent to an active node and a reactive node. Then a proportional sharing matrix M is built. Search this matrix to trace power flow. Finally gain the contribution of each generator and each direct-to-ground capacity to each load.
Before making the tracing process of the algorithm, this paper defines the nodal injection power vector is used to record the total power injection each equivalentnode, defining the proportion coefficient matrix, and then the proportion coefficient matrix to achieve search the tracing process. Finally get the different paths of each generator power to each load (supply chain) and the corresponding power size. The search process of proportional coefficient matrixis actually in artificial intelligence to the depth first search, after the process ofbreadth first search.
Finally, the power flow tracing loss allocation algorithm is based on C language to program the proposed .Numerical test shows that the proposed method can trace both power flow and losses correctly and effectively, which provides foundation for transmission charge allocation theory.
Keywords::power market, power flow tracing, proportional sharing principle, losses,
transmission services,artificial intelligence search.

目 录
第一章 绪论 1
1.1引言 1
1.2 电力市场输电服务分析 2
1.3输电费用分摊方案的研究现状及评述 3
1.4本文的主要工作 7
第二章 潮流跟踪技术解析 8
2.1 引言 8
2.2比例分配原则 9
2.3网损分摊方法 11
2.4其他重要研究成果 14
2.5本章小结 14
第三章 基于网络等效的潮流跟踪的网损分摊模型 16
3.1引言 16
3.2跟踪原则 16
3.3线路对地电容的处理 16
3.4有功和无功分离的网络等效 19
3.5基于网络等效的潮流跟踪和网损分摊模型 21
3.6本章小结 29
第四章 含网损分摊的潮流跟踪算法实现 31
4.1引言 31
4.2潮流跟踪算法的编程实现 31
4.3 C 语言简介 36
4.4运行结果 38
4.5本章小结 40
第五章 结论与展望 41
参考文献 43
致谢 45
附录 46