论文总字数：32291字

摘 要

电气主接线作为变电站电气部分的关键构造，展现了元件、线路之间的相互连接关系。但是目前而言，对电气主接线方案的选择通常只涉及到投资成本最低，而未考虑到全寿命周期的各个阶段。在实际工程项目中可以发现投资成本要远远低于运营维护和故障检修成本总和，同时回收处置也对成本存在一定的影响。因此，本文在不考虑电源缺失和负荷损失造成的网络潮流重新分布的情况下，研究了基于全寿命周期成本的变电站主接线设计方法，并将其应用于三电压等级的中型火电厂主接线方案选择中。

本文首先建立了变电站主接线元件的可靠性模型，有关的元件包括断路器、变压器、输电线路、母线以及隔离开关，并学习了基于邻接矩阵的最小割集法，构造出变电站主接线的网络结构矩阵，由最小路集得到最小割集，从而判断出变电站的出线停运时各元件所处的状态。

其次又建立了变电站主接线的全寿命周期成本模型，将全寿命周期成本划分为投资成本、运行成本、故障成本、维修成本、处置成本几个部分，并以内桥接线为例，列举出内桥接线的最小割集，再计算内桥接线出线停运时主接线元件在正常与各种故障情况下的概率以及电量不足期望值，最后求出故障成本。

算例采用10kV/110kV/220kV电压等级火电厂的三种不同主接线方案，在不考虑与考虑全寿命周期成本的情况下进行方案比较，得到最优方案。

关键词：变电站 电气主接线 全寿命周期成本 最小割集

Design and Application of Substation Main Wiring Considering

Full Life Cycle Cost

Abstract

As the key structure of the electrical part of the substation, the main electrical wiring shows the interconnection relationship between components and lines. But at present, the selection of the main electrical wiring scheme usually only involves the lowest investment cost, and does not consider the various stages of the full life cycle. In actual engineering projects, it can be found that the cost of investment is much lower than the total cost of operation, maintenance and troubleshooting. At the same time, recycling and disposal also have a certain impact on the cost. Therefore, without considering the redistribution of power flow caused by power loss and load loss, this paper studies the design method of the substation main wiring based on the full life cycle cost, and applies it to the main wiring scheme of the three-voltage medium-sized thermal power plant selecting.

This paper first establishes the reliability model of the main wiring components of the substation. The relevant components include circuit breakers, transformers, transmission lines, busbars and disconnectors, and learns the minimum cut set method based on the adjacency matrix to construct the network structure of the main wiring of the substation. In the matrix, the minimum cut set is obtained from the minimum path set, so as to determine the state of each component when the outlet of the substation is out of service.

Secondly, the life cycle cost model of the main wiring of the substation is established. The life cycle cost is divided into investment cost, operating cost, failure cost, maintenance cost, and disposal cost. Taking the internal bridge wiring as an example, the internal bridge is listed. The minimum cut set of the wiring, and then calculate the probability of the main wiring element under normal and various fault conditions when the inner bridge wiring is out of service and the expected value of the power shortage, and finally find the fault cost.

The calculation example adopts three different main wiring schemes of 10kV / 110kV / 220kV voltage power plants, and compares the schemes without considering and considering the full life cycle cost to obtain the optimal scheme.

Key Words: Substation; Electrical main wring; Life cycle cost; Minimal cut set

目 录

摘 要 Ⅰ

Abstract Ⅱ

第一章 绪论 1

1.1 课题背景及意义 1

1.1.1 课题背景 1

1.1.2 课题意义 1

1.2 国内外研究现状 2

1.2.1 国外研究现状 2

1.2.2 国内研究现状 2

1.3 课题主要内容 3

第二章 变电站主接线元件的可靠性评估模型 4

2.1 主接线元件的可靠性模型 4

2.1.1断路器的可靠性模型 4

2.1.2输电线路和变压器的可靠性模型 5

2.1.3母线的可靠性模型 6

2.1.4隔离开关的可靠性模型 7

2.2 基于邻接矩阵的最小割集法 8

2.2.1电气主接线的网络结构矩阵 8

2.2.2电气主接线的故障响应矩阵 10

2.2.3电气主接线最小割集的求法 11

2.3 本章小结 12

第三章 变电站主接线的全寿命周期成本模型 13

3.1全寿命周期成本的基本概念 13

3.2全寿命周期成本的计算方法 14

3.2.1全寿命周期成本（LCC）的基本方法 14

3.2.2投资成本（CI） 15

3.2.3运行成本（CO） 15

3.2.4维修成本（CM） 15

3.2.5故障成本（CF） 15

3.2.6处置成本（CD） 16

3.3 故障成本的算例分析 16

3.3.1变电站可靠性原始参数的输入 17

3.3.2电气主接线可靠性分析的基本矩阵 18

3.3.3电气主接线各故障状态的最小割集 22

3.3.4电气主接线元件处于各状态的概率 27

3.3.5故障成本的计算结果 27

3.5 本章小结 28

第四章 基于全寿命周期成本的变电站主接线选择方法 29

4.1基于全寿命周期成本的变电站主接线选择方法 29

4.2变电站主接线的算例分析 30

4.2.1变电站主接线的方案设计 30

4.2.1变电站主接线的基础数据 31

4.2.2变电站主接线的方案比较 34

4.3 本章小结 35

第五章 总结与展望 37

5.1 总结 37

5.2 展望 37

参考文献 38

致 谢 40

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