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韶关市新城区电网设计与规划

论文编号:ZD1414 论文字数:24150,页数:47

论文题目：韶关市新城区电网设计与规划

摘要

电力是城市发展的重要动力，合理的电网规划可获得巨大社会效益及经济效益。当前城市电网存在着网架一结构薄弱、供电可靠性差、电力设备老化、线损高、电能质量不稳定，自动化程度低等问题，这与国家提出的建设智能电网差距较大，因此进行电网规划改造势在必行。本文首先介绍了电网规划基本概念及研究现状，并对几种常用的负荷预测方法进行总结分类。对城区远景负荷创新地融入分区分层的思想，分别建立了各层负荷计算模型，由此得到的空间负荷分布结果更为详实。韶关城区地形狭长复杂，论文提出适应韶关城区发展的配网规划目标及原则，并针对城区中压配网存在的问题分别给出了解决方案。韶关城区的中压布局一直缺乏合理规划，论文就中压合理布局问题采用三种方案举例分析，经过三种方案的技术经济指标比较，提出按照多布点、小容量、短半径的原则进行布局，以降低配网线损，提高用户电压水平，获得更好的社会经济效益。论文最后对整个规划方案成效进行了技术经济评估，分析了其技术指标及经济效益，论证了方案的可行性。

关键词：城市电网规划；负荷预测；合理布局；技术经济评估

Topic: New City, Shaoguan City, grid design and planning

Abstract

Electricity is an important driving force of urban development, network planning and reasonable access to a huge social and economic benefits. The current urban power grid there is a structural weakness, poor reliability, power equipment, aging, high line losses, power quality unstable, low degree of automation issues, which the State made a big gap between the construction of smart grid, so the power grid Planning must be enforced. This paper introduces the basic concepts of network planning and research status, and load forecasting of several commonly used summary classification. Innovative vision of the city and into the section layer load the idea of load calculation were established model of the layers, which are in load distribution results more detailed. Complex urban terrain strip Shaoguan, Shaoguan City is proposed to adapt to the development of distribution network planning objectives and principles, and medium voltage distribution network for urban problems in the solution are given. Shaoguan city in the pressure distribution has been the lack of rational planning, rational distribution of papers to the pressure of the problem with three options for example, through technical and economic indicators of the three programs compared to fabric made in accordance with the multi-point, small capacity, short radius of the principles of layout, distribution network to reduce line losses, improve voltage level of the user, access to better social and economic benefits. Finally the effectiveness of the overall planning of the technical and economic assessment, analysis and economic benefits of its technical indicators, demonstrate the feasibility of this.

Keywords: urban network planning; load forecasting; rational distribution; technical and economic assessment

1 绪论………………………………………………………………………………………1
1.1课题的研究背景………………………………………………………………………1
1.2城市电网规划的分类与意义…………………………………………………………1
1.3研究现状………………………………………………………………………………2
1.4论文的主要工作………………………………………………………………………3
2 电网规划相关理论概述…………………………………………………………………4
2.1 负荷预测的内容………………………………………………………………………4
2.2 负荷预测的一般方法…………………………………………………………………5
2.3韶关市新城区电力负荷预测………………………………………………………10
3 韶关新城区电网规划……………………………………………………………………19
3.1变电站选址定容……………………………………………………………………19
3.2 中压配电网远期规划………………………………………………………………22
3.3“十一五”中压配电网络规划………………………………………………………27
4 配电自动化系统结构示意图…………………………………………………………32
4.1通讯方式的选择……………………………………………………………………32
4.2通信通道的选择……………………………………………………………………33
4.3实现配电自动化系统过程中值得注意的问题……………………………………34
4.4 投资估算……………………………………………………………………………35
4.5通信通道、终端设备、控制中心投资估算…………………………………………35
4.6 配电自动化系统的投资估算………………………………………………………35
5 投资估算及效益分析……………………………………………………………………36
5.1单位工程造价………………………………………………………………………36
5.2 中低压项目投资……………………………………………………………………37
5.3经济效益分析………………………………………………………………………39
6结论………………………………………………………………………………41
参考文献……………………………………………………………………………………42

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