冶金机械修造厂总压变电所及高压配电系统设计.docVIP

本科毕业设计（论文） 南方冶金机械修造厂总降压变电所 及高压配电系统设计 学 院 专 业 电气工程及其自动化 年级班别 学 号 学生姓名 指导教师 年 月 摘 要 防雷保护接地装置。 关键词： ，短路，配电 Abstract A Metallurgical Machinery factory if the transmission and distribution system have a sound planning, savings can be good, reasonable land use planning, reducing power loss, upgrade quality and ensure the normal operation of systems. In this paper, transmission and distribution of a comprehensive design, content is divided into four parts. The first part discussed the background and purpose, then the raw data to conduct a preliminary analysis, to determine a good step in the design of this thesis. The second part of the metallurgical have plant to identify good part of the load, an accurate calculation, through the reactive power compensation system to improve the power factor to reduce the power loss. According to load the importance and the size of a reasonable load the main cables, power supply lines and preliminary design of the transformer choice. The third part is to ensure that the safety system, first of all, the system accurate short-circuit, and then be the basis of the current short-circuit current and impact of a series of high and low voltage equipment selection and validation to ensure the normal operation of systems. The fourth part of the design in accordance with the requirements of lightning protection measures for the final selection and ground equipment design, increased system security. In the final papers also include the design drawings and calculation process. Key words：Load calculation, Main wiring design, Short-circuit calculation, Distribution Device 1 绪 论 1 1.1 论文背景及目的 1 1.2 论文研究方法 1 1.3 供电设计的主要内容 1 2 2 2.1 负荷计算 2 2.1.1 负荷计算的意义 2 2.1.2 按需要系数法确定计算负荷 2 2.1.3 6kV负荷计算 3