110kv变电站毕业设计.doc

110kV变电站一次系统设计 摘 要 随着工业时代的发展，电能已经成为人类发展的主要能源，科学合理的驾驭电能必须从电力工程的设计和方法上掌握其精髓，提高电力系统运行的可靠性和稳定性。从而达到降低生产成本提供经济效益的目的。本文首先根据所拟订的系统与线路及所有负荷的参数，分析负荷发展趋势。从负荷增长方面阐明了建站的必要性，然后通过对拟建变电站的概括以及出线方向来考虑，并通过对负荷资料的分析，安全，经济及可靠性方面考虑，确定了110kV，35kV，10kV以及站用电的主接线，然后又通过负荷计算及供电范围确定了主变压器台数，容量及型号，同时也确定了站用变压器的容量及型号，最后，根据最大持续工作电流及短路计算的计算结果，对高压熔断器，隔离开关，母线，绝缘子和穿墙套管，电压互感器，电流互感器进行了选型，从而完成了110kV变电站一次部分的设计。 关键词：变电站，变压器，系统设计，接线 The Design of Major System of 110kV Substation ABSTRACT With the development of the industrial in years, power had become the primary energy of the development in our soicety, the scientific and reasonable control of power must be from the electrical engineering design method and grasp its essence, improving the power system reliability and stability. In order to reduce the cost of production is provided. The goal of economic benefits.At first, the system worked out with the lines and all the load parameters, the analysis of load development trends. Clarify the need for the establishment of the station in terms of load growth, and then to consider the generalization of the proposed substation and outgoing direction, and through the analysis of load information, security, economic and reliability considerations, determine the 110kV, 35kV, 10kV station power wiring, load calculation and supply area and then determine the number of main transformer capacity and model, but also to determine the capacity and model of the substation transformer, and finally, according to the maximum continuous operating current and short circuit calculations, selection, high-voltage fuses, isolating switches, busbars, insulators and wall bushings, voltage transformers, current transformers, thus completing the 110kv substation once part of the design. KEY WORDS: substation，transformer，system design，wiring 目　录 TOC \o 1-3 \h \u 前　言 1 第1章 变电站的分析与设计 2 1.1变电站负荷情况及所址概况 2 1.2变电站的负荷分析 3 第二章 电气主接线设计 6 2.1 110kV电气主接线 7 2.2 35kV电气主接线 7 2.3 10kV电气主接线 11 2.4站用电接线 12 第三章 负荷计算及变压器选择 14 3.1负荷计算 14 3.1.1站用负荷计