于村110kv变电站继电保护系统式设计.docx

本科毕业设计（论文） 题 目 于村110KV变电站继电保护系统设计 专业名称 电气工程及其自动化 年级班级 学生姓名 指导教师 2021年 6 月 摘要 PAGE PAGE I 摘要 目前由于我国在电力领域的飞速发展,国内在线电力系统中的装机容量以及在线输电地区也在不断拓宽。继电保护器件广泛地应用在电力系统、变配电站及小型风力发电系统中,它们为电力系统安全、可靠地运行提供保障。因此,设计出安全可靠的110kV变电站的成为了一个重要课题。本设计通过在对原始数据进行深入系统的分析基础上,充分结合了本站实际情况,合理地选取了主变压器以及最优的主接线方案。结合一次主接线进行短路点的确定与短路电流计算，接着对主变压器、110kV-10kV线路选择合适的保护配置以及选型分析，分析差动保护、电流三段式保护原理并进行整定计算，进而完成于村110kV变电站继电保护系统设计。 本次设计主要是为了在认真地巩固对电力系统的分析,继电保护课程中已经学到的相关理论知识的基础上,运用自己所学的知识进行分析并初步地掌握继电保护系统设计的主要内容、步骤及操作方法,提高了编写相关技术资料、计算、制图的技能。 关键词:110kV变电站;变压器保护;线路保护；差动保护；电流三段式保护 Abstract PAGE PAGE II Abstract At present, because of the rapid development in the field of electric power, the installed capacity of domestic on-line electric power system and the on-line transmission area are also expanding. Relay protection devices are widely used in power systems, substations and small-scale wind power generation systems, which are to ensure the safe and reliable operation of the power grid and other electrical facilities. Therefore, the design of a safe and reliable 110kV substation has become an important topic. The selection of main transformer capacity, reactive power compensation and main wiring plays a vital role in the economic and stable operation of substations. Therefore, based on the in-depth and systematic analysis of the original data, this research focuses on the detailed explanation and demonstration of its functional characteristics, and fully combines the actual situation of this station, the capacity of each main connection is reasonably selected, and the optimal main connection scheme is finally determined through the comprehensive comparison of various optimization schemes in the earlier period, at the same time, according to the selection principle of electrical equipment, select the voltage measuring side of the electrical equipment, and then completed in the village 110k