县域配电网供电能力分析研究.doc

陕西理工学院毕业设计 PAGE V 县域配电网供电能力分析研究 xxx （陕西理工学院 电气工程学院 电气工程及其自动化专业 电气084班 陕西 汉中 723003） 指导教师：xxx [摘要]随着国民经济的快速发展，电力负荷的增长速度也明显加快，同时电力用户对配电网的供电能力提出了更高的要求。本课题介绍了容载比法、最大负荷倍数法、试探法、图论法、目标规划法、模糊评估法等方法的概念、特点及不同，通过对县域配电网目前运行状态的深入了解，以及对容载比法、电压合格率、负载率、线损率、“N-1”校验率等历史数据进行统计、分析，采用了容载比法对配电网的供电能力进行了详细的研究，以此来查找配电网的不足和薄弱环节，最后给出了配电网近、远期规划建设、建议，对今后提升整个城市配电网的供电能力和供电可靠性有一定的借鉴意义。 [关键字 ]供电能力；容载比法；影响因素；研究 Research of Supply Capability Evaluation of County Distribution Network xxx (Grade08,class4,Major Engineering Automation, Electronic engineering Dept, Shanxi University of Technology , Hanzhong 723003,Shanxi) Tutor: xxx Abstract：With the rapid development of national economy, the electric power load growth also has been obviously paced up, the power users of electric distribution network of power supply put forward higher request. The issue introduces analogy method, the maximum load carrying capacity multiple method, heuristics, graph theory method, the goal programming method, fuzzy evaluation method and other methods’ characteristics and differences. Through in-depth understanding of the country distribution network which is currently running state, mainly analyses these factors that the analogy method, the grid voltage qualification rate, load rate, line loss rate and the N-1 pass rate impact on the power supply capacity, mainly takes analogy method to analysis and study the supply capacity of the distribution network, in order to find the deficiencies and weakness of the distribution network, and give the distribution network short and long term planning construction in the future, which is benefit for upgrading the power grid of the entire city power supply capacity and power supply reliability. Key Words: Supply Capacity; Analogy Method; Influence Factors; Research 目录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc328337712 HYPERLINK \l _Toc328337713 1概述 PAGEREF _Toc328337713 \h 1 HYPERLINK \l _Toc328337714 1.1研究背景 PAGEREF _Toc328337714 \h 1 HYPERLINK \l _Toc328337715 1.2