市配电网可靠规划设计

市配电网可靠规划设计

毕业设计

题目：G市配电网可靠性规划

中文摘要

配电系统处于电力系统末端，是把输变电系统与用户设施链接起来，向用户分配电能和供给电能的重要环节，配电网可靠性研究对用户和供电企业均有重要意义。本文的目的就是根据可靠性理论去分析G市电网的可靠性，利用ETAP软件计算G市可靠性指标，对配电网供电可靠性现状进行统计分析，针对G市配网2015年规划做可靠性提升潜力评估。论文提出了一套比较科学和系统的可靠性规划方法，首先要求先对G市配电网现状以及G市配电网历史运行数据进行分析，并且在现状电网下进行可靠性分析，在可靠性现状评估的基础上对规划期的可靠性指标目标值进行细化，以确定较为合理的可靠性目标。然后，给出规划期可靠性指标的预测，将其与目标值进行比较，为各项改善措施的可靠性贡献定量研究提供目标依据。最后，通过对改进可靠性措施与现状电网可靠性之间进行比较，对两者进行成本-效益评估并提出改进意见。

关键词：配电网可靠性评估成本效益分析可靠性规划

Distribution network planning reliability on G

city

Abstract

At the end of the power system, power distribution system is the transmission system and user facility link, to the user an important link of the power supply and distribution of electrical energy, power distribution network reliability research of both user and power supply enterprises of great significance. The purpose of this article is based on reliability theory to analyze the reliability of G city power grid, ETAP software is used to calculate reliability index G city, carried out a statistical analysis about the present situation of distribution network power supply reliability, 2015 G city distribution network planning against doing reliability ascension potential evaluation. Paper puts forward a set of more scientific and systematic reliability planning method, First of all, claim on the basis of the status qualified of reliability evaluation for thinning planning phase of target reliability index, a reasonable to determine the reliability of the goal. Then, the planning phase of the reliability index of the prediction compared with the target, contributing to the measures improving the reliability of the quantitative research provides the basis of the goal. Finally, on the improved reliability measure and conparison between the status power distribution system reliability, cost-benefit analysis for assessment and put forward the improvement opinion.

Keywords: Power Distribution System Reliable Assessment

Cost-benefit analysis Reliability plan

目录

第一章前言 (1)

1.1 本课题的研究背景及意义 (1)

1.2 国内外配电网可靠性发展状况及研究状况 (2)

1.3 本论文主要内容 (3)

第二章配电网可靠性理论基础 (5)

2.1 电力系统可靠性概述 (5)

2.1.1 可靠性概念 (5)

2.1.2 可靠性在电力系统中的应用 (5)

2.1.3 配电系统的特点 (6)

2.1.4 配电可靠性概述 (7)

2.2 配电网可靠性评估理论 (7)

2.2.1 供电可靠性评估指标 (8)

2.2.2 配电网供电可靠性评估方法 (9)

2.2.3 供电可靠性评估软件ETAP简介 (10)

2.3 提高供电可靠性的方法分析 (11)

2.3.1元件的可靠性模型 (11)

2.3.2提高配电网可靠性的措施 (12)

第三章G市配电网可靠性现状及薄弱环节分析 (14)

3.1 概况 (14)

3.2 中压配电网现状分析 (14)

3.2.1 中压配电网概况 (14)

3.2.2 网络结构水平 (15)

3.2.3 负荷供应能力 (17)

3.2.4 装备技术水平 (20)

3.2.5 重要用户供电情况 (24)

3.2.6 中压配电网综合评价 (24)

3.3 电网存在的薄弱环节 (27)

3.3.1 网络结构水平 (27)

3.3.2 负荷供应能力 (28)

3.3.3 中压配电网装备技术水平 (28)

I