毕业设计----35kv总降压变电所二次系统设计

《毕业设计----35kv总降压变电所二次系统设计》由会员分享，可在线阅读，更多相关《毕业设计----35kv总降压变电所二次系统设计（56页珍藏版）》请在毕设资料网上搜索。

1、毕业设计（论文） I 摘 要 在工业生产自动化中，工厂高压供电和配电是一个工厂最基本的能源保证。 即对总降压变配电所的设计要求在不断地提高，尽可能地使电网和电力系统安全、 经济、稳定的运行，才能保证工业生产和人身安全。本设计是为 35kv 变电所设计 的。通过对设计原始资料的分析，全厂负荷的计算，选择相应的主变压器台数和 容量，从而确定其具体的供电系统。再对其初选的系统进行相应的短路计算和高 压设备的选择及校验，选择和校验高压线路，最后简单的进行继电保护设置的说 明。结合课本的基础知识，根据我国变配电所的运行情况以及各种变压器、开关 柜、线路等电气设备的标准，进行具体的定量地选择电气设备，最终

2、可以得出具 体的关于工厂总降压变配电所供电的系统图。 关键词：负荷计算，变压器，短路电流，继电保护 ABSTRACT In the automation of indusdrial production ,high-voltage power supply and power distribution are the most fundamental energy guarantee for a factory .that is to say ,in order to make the systems of electricgrid and electric power work safely

3、 ,economically and stably as much as possible ,the design requirements of the substation improve continuously ,which is the only way to ensure indusdrial production and personal safety .This design instruction is designed for 35kv substations .Through analyzing the original design materials ,calcula

4、ting the load throughout the factory and choosing the corresponding quantity and capacity of the main transformer ,the concrete power supply system can be determined accordingly .Then for the primary system ,not only the relevant short-circuit should be calculated but also the high-voltage equipments should be selected .Meanwhile, the high-voltage circuit should also be selected and examined .Finally the relay protection of power system should be given a short explanation .According to the opera