火力发电厂电气一次部分毕业设计.docVIP

目 录 前言···························································· 1 摘要及关键词···················································· 2 第1章 主接线的设计············································· 3 1．1 发电机台数和参数的确定·································· 3 1．2 变压器台数和参数的确定································· 3 1．3 厂用电的设计的确定····································· 4 1．4 220kV主接线的设计····································· 6 第2章 短路电流计算点的确定和短路计算结果······················ 9 2．1短路电流计算点的确定···································· 9 2．2短路电流计算············································ 9 2．3 短路电流计算结果······································· 16 第3章 主要电气设备的配置和选择································ 16 3．1主要电气设备的配置······································ 16 3．2主要电气设备的选择······································ 17 第4章 所选电气设备的校验······································· 21 4．1 断路器的校验············································ 22 4．2 隔离开关的校验·········································· 23 4．3 电流互感器的校验········································ 23 4．4 母线的校验·············································· 25 第5章继电保护的配置和考虑······································ 25 5．1概述····················································· 25 5．2发电机保护配置··········································· 27 5．3变压器的保护配置········································ 29 结论····························································· 30 谢辞····························································· 31 参考文献························································· 32 附录一 所选设备一览表············································ 33 附录二 电气主接线················································ 35 前言 毕业设计是我们在校期间最后一次综合训练，它将从思维、理论以及动手能力方面给予我们严格的要求。使我们综合能力有一个整体的提高。它不但使我们巩固了本专业所学的专业知识，还使我们了解、熟悉了国家能源开发策略和有关的技术规程、规定、导则以及各种图形、符号。它将为我们以后的学习、工作打下良好的基础。 能源使社会生产力的重要基础，随着社会生产的不断发展，人类使用能源不仅在数量上越来越多，在品种及构成上也发生了很大的变化。人类对能源质量也要求越来越高。电力使能源工业、基础工业，在国家建设和国民经济发展中占据十分重要的地位，是实现国家现代化的战略重点。电能也是发展国民经济的基础，使一种无形的、不能大量存储的二次能源。电能的发、变、送、配和用电，几乎是在同时瞬间完成的，须随时保持功率平衡。要满足国民经济发展和要求，电力工业必须超前发展，这是世界发展规律。因此，做好电力规划，加强电网建设，就尤