35kv 变电站的设计张蛟龙老师.docVIP

内 容 摘 要 本论文主要是针对某企业的35kv变电站的设计，概述了变电站设计的基本过程和基本方法。首先介绍了变电站设计应注意的地方；其次根据煤矿的原始资料进行负荷计算和主变压器及其容量的选择，确定主变压器容量和型号；接着进行电气主接线的设计，电气主接线是变电站电气设计的主体，与变电站运行的可靠性、经济性要求等密切相关；接着对35kV变电站做了短路电流计算和电器设备的选择，短路电流是为后面设备的选型提供了依据并根据短路电流可以进行设备的整定和校验；最后针对短路电流进行继电保护和变电站的防雷设施和接地装置等。 随着国民经济和科学技术的发展，企业用电的需求量越来越大，这就对变电站的主接线形式和配套设备提出了更高的要求，同时也要求发变电站做到可靠、经济、合理地运行，满足人们对电能的基本需求。 关键词：变电站 主接线 主变压器 短路电流计算 Abstract This paper is mainly directed against coal a corporation 35/10 kV substation design, outlined the basic design of the substation process and basic methods. First introduced substation design should pay attention to the areas under coal mine corporation followed by the original data load calculation and capacity of the main transformer and its choice to determine the main transformer capacity and models; followed by the main electrical wiring design, electrical wiring is the main electrical substation The main design and operation of the substation reliability, economic requirements, and more closely related to the 35 kV substation and then do a short-circuit current calculation and electrical equipment choice, short-circuit current is behind the selection of equipment and provides a basis under the current can short-circuit The whole set equipment and calibration; last for a short-circuit current protection and substation facilities and the mine grounding devices. As the national economy and scientific and technological development, rural and near the town of growing demand for electricity, which substation on the main form of wiring and ancillary equipment a higher demand, it also requires the substation to reliable , The economy, a reasonable operation, meet the basic needs of electricity. Key words: substation main wiring main transformer substation short-circuit current calculation 目 录 前言 1 1 负荷计算及变压器的选择 3 1.1 负荷计算 3 1.2 功率补偿 5 1.3 变压器的容量和台数的选择 6 2 变电所的主接线 8 2.1 变电所主接线的要求 8 2.2 35KV主接线的选择 8 2.3 10KV主接线的选择 12 2.4 变电站的用电接线 13 3 短路电流计算 15 3.1 短路原因和种类 15 3.2 短路的危害和研究短路的目的 15 3.3