110KV变电站电气一次部分设计说明书.doc

word格式 整理版 PAGE 学习参考 摘 要 随着国民经济的突飞猛进，电能已成为社会生产中必不可少的一种能源，为国民经济各部门和人民生活提供充足，可靠，优质，廉价的电能，是电力工业的基本任务。变电站作为电力系统中的重要组成部分，直接影响整个电力系统的安全与经济运行。这次设计首先根据任务书上所给原始资料及所有负荷的参数，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电气一次部分的设计。该变电站的建成，不仅增强了当地电网的网络结构，而且为当地的工农业生产提供了足够的电能，从而达到使本地区电网安全、可靠、经济地运行的目的。 关键词：电气主接线; 短路电流计算; 电气设备选择; 设计图纸  Abstract Along with the rapid development of national economy, the power has become necessary in social production of a kind of energy, for national economic sectors and peoples life quality, reliable, and provide enough power, cheap, is the basic task of the electric power industry. Substation as an important part of power system, directly affects the whole power system safety and economical operation. The first task according to the design of this book to the original material and all the parameters, the analysis of load load development trend. From the load increasing illustrates the necessity of the establishment of construction, and then through the generalization of substation and outlet to consider, and through the analysis of the data of load, safety, economy and reliability into consideration, determine the 110 kv and consumers 10kV power station, as well as 35kV main connection, and then through the load calculation and power supply range determines the main transformer capacity and models, and also identified with the capacity of transformer station, finally, according to the model and maximum sustained working current and short circuit calculation results of high-pressure fuse, isolating switch, bus, insulator and wear casing wall, voltage transformer, current transformer, the selection of 110 kv electrical once finished parts design. The substation built, not only enhances the local power grid, the network structure and