毕业设计-XF110KV变电所设计.doc

摘 要 XF 110KV变电所是地区重要变电所，是电力系统110KV电压等级的重要部分。其设计分为电气一次部分和电气二次部分设计。 一次部分由说明书，计算书与电气工程图组成，说明书和计算书包括变电所总体分析;负荷分析与主变选择;电气主接线设计;短路电流计算;电气设备选择;配电装置选择;变电所总平设计及防雷保护设计。 二次部分由说明书，计算书与电气工程图组成。 XF county 110KV substation is an important station in this distract, which is one of the extremely necessary parts of the 110KV network in electric power system. The design of the substation can be separated in two parts: primary part and secondary part of the electric design. The first part consists of specifications, computation book and Electrical engineering drawings about the design. The specifications has several parts which are General analysis of the station, Load analysis, The selection of the main transformer, Layout of configuration, Computation of short circuit; Select of electric devices, Power distribution devices, General design of substation plane and the design of thunderbolt protection. The second part also consists of specifications, computation book and electrical drawings about the design。 Specifications and computation book include following section: General, The evaluation and calculate of line protection, Transformer protection, capacitor protection, Bus protection and Self-using transformer protection. Computation book, Electrical engineering drawings and catalogue of drawings are attached in the end。 There are drawings total, in which four are prepared by hand, others are prepared by computer in which installed the software electrical AutoCAD. From other view, it also can be classified as first part and second part. This is a design of substation for graduation design test. It can strengthen our specified knowledge. Key-words: Ⅰsubstation Ⅱtransformer Ⅲ Relay protection  谢 辞 首先，在设计前的理论学习和实验环节中，刘宪林、王克文、陈根永、孔斌、包毅等专业课和实验指导老师的教导为我提供了丰富的专业理论知识和实践分析能力。在本次设计的近一个学期中， 和刘姗老师极其认真负责的辅导和耐心的解答帮助我解决了一个个的难题。在此要对老师们不辞劳苦的工作和无私奉献的精神表示衷心的感谢！ 在本次设计过程中，特别要感谢同寝室的 同学、及同组的同学，他们的帮助让这次设计变得轻松了许多。 设计中虽然充分采纳了老师和同学们的意见，几经修改，但由于是初次设计，加之自身水平有限，设计及论述过程中难免