摘要: 低压配电的主要设备是低压成套开关设备。低压配电柜在低压电能供配电系统中实现电能的控制、分配、保护、测量等功能。本文基于多种常用的开关柜,结合供配电系统,放眼低压配电系统未来的发展方向,针对MNS低压配电柜的优化设计进行分析和探讨。详述了现有各种低压配电柜的主要特点,国内外有关低压配电柜的研究情况进行综合归纳,取长补短,在实际供配电系统应用中进行试验;还针对企业用户现用的低压配电系统进行性能分析,在此基础上结合理论提出了MNS开关柜的优化设计方案。对低压供配电系统和开关柜的安全、经济、使用方便和发展方向等具有理论指导意义和实用价值。38131
毕业论文关键词: 低压配电柜;供配电系统;优化
The optimum design of MNS type low voltage distribution cabinet in power supply and distribution system
Abstract:The main equipment of low voltage power distribution is low voltage switchgear. Low voltage distribution cabinet in the low-voltage power supply and distribution system to achieve power control, distribution, protection, measurement and other functions. Based on a variety of commonly used switchgear, combined with power distribution system, the future development direction of the low-voltage distribution system, the optimization design for MNS low-voltage distribution cabinet is analyzed and discussed.Describes the main features of the existing all kinds of low voltage distribution cabinet, research situation at home and abroad of the low-voltage power distribution cabinet are summed up, learn from each other, in actual application of distribution system to test. For business users now in low voltage distribution system performance analysis, on the basis of combining theory put forward the optimization scheme of MNS switchgear cabinet. It has theoretical directive significance and practical value for the safety, economy, convenience and development direction of the low-voltage distribution system and switchgear cabinet.
KeyWords:low voltage switch box;power supply and distribution system;optimization
目录
1 绪论 6
1.1 选题的背景和意义 6
1.2国内外关于MNS低压配电柜的研究现状 6
1.2.1 设计手段的提高 7
1.2.2 设备的抗故障电弧能力 7
1.2.3 加工工艺 7
1.3本设计主要研究内容 7
2 低压成套开关设备的基本概念和基础知识 9
2.1 低压配电系统基本知识 9
2.1.1 电压等级的划分 9
2.1.2 低压接地系统 9
2.1.3 短路电流计算 10
2.2 低压配电设备成套技术 10
2.2.1低压开关柜分类及柜体制作 10
2.2.2 开关柜生产的相关问题分析 12
3 MNS低压配电柜的概述及优缺点分析 14
3.1 常见的几种低压配电柜 14
3.2 MNS型低压配电柜概述 16
3.2.1 MNS型低压电配电柜的基本概念 16
3.2.2 MNS型低压配电柜的基本特点 17
3.2.3 MNS型低压配电柜的形式 17
3.2.4 MNS型低压配电柜的柜体制作及安装 17
3.2.5柜体结构型式的分类 18
3.2.6抽屉单元 19
3.2.7 MNS型低压配电柜的母线搭接 19
3.2.8接地保护系统 20
3.3 MNS型低压配电柜的安装和检测 20
3.4 几种低压配电柜的对比分析 22
4 上海张江东区MNS型低压配电调查 23
4.1 上海昌杰实业有限公司MNS配电柜电气火灾事故 23 MNS型低压配电柜在供配电系统中的优化设计:http://www.youerw.com/zidonghua/lunwen_37062.html