330kV变电所电气一次部分的初步设计.docVIP

摘 要 本次设计主要介绍了0kV变电所电气一次部分的初步设计过程、原则、方法等。设计的内容符合国家有关经济技术政策，满足对电气一次回路的要求，包括可靠性、灵敏性和经济性三方面。 ? ABSTRACT This design mainly introduced a 330kV transformer substation electricity partial preliminary design process, the principle, the method and so on. The design content conforms to the national related economical technology policy, satisfies to an electrical return routes request, including reliable, sensitive and efficient three aspects. Transformers and wiring in the Main part of the main part of the content is the foundation, introduces the main connection in the form of an overview of the characteristics of different connection methods, their advantages and disadvantages and the principle of the transformer principle, according to mandate of the book chose to meet the design requirements The main task of wiring options. Short-circuit current is a very important part, which introduces the purpose of calculating short-circuit, principles, methods and specific data information for the design needs of the choice of high voltage electrical equipment, setting, checking and so to prepare. Selection and verification of electrical equipment is mainly employed symmetrical short-circuit calculations for high-voltage electrical equipment circuit breaker, disconnecting switch validation. key words：main transformer ,main electrical wiring,relay, setting and calibration 目录 摘要 I ABSTRACT II 目录 III 1绪论 1 1.1 变电站的发展和现状 1 1.2 设计原则 1 2电气主接线 3 2.1 原始资料 3 2.2 电气主接线选择 3 2.2.1电气主接线 3 2.2.2 电气主接线的设计原则 3 2.2.3 电气主接线的基本要求 4 2.2.4 电气主接线的设计原则 4 2.3 主接线的方案比较 5 2.3.1 330kV侧主接线的方案比较 5 2.3.2 110kV侧主接线的方案比较 5 2.4 电气主接线最终方案 6 3短路电流计算 7 3.1 短路电流计算 7 3.1.1 短路电流的起因、危害及计算的目的 7 3.1.2短路电流计算的一般规定 7 3.1.3 系统运行方式的确定 8 3.1.4 短路形式的确定 8 3.1.5 短路电流计算点的确定 8 3.1.6 短路电流计算的方法 8 3.2 短路电流计算结果 9 3.3短路电流计算书 10 4电气设备选择与校验 15 4.1电气设备的选择 15 4.1.1 电气设备选择的一般原则 15 4.1.2 技术条件 15 4.2 电气设备的校验 16 4.3 断路器的选择与校验 16 4.3.1 330kV侧断路器的选择与校验 17 4.3.2 110kV侧断路器的选择与校验 18 4.3.3 35kV侧断路器的选择与校验 19 4.4 隔离开关的选择与校验 20 4.4.1 330kV侧隔离开关的选择与校验