1、 I 某水泥厂 110kV 总降压变电所的设计 摘 要 该论文主要阐述了某水泥厂 110kv总降压变电所供配电系统的设计依据、原 则、方法以及设计的结论。在供配电系统设计中，首先根据负荷等级和原始资料， 运用需要系数法进行负荷计算，并且进行变压器和主接线的比较设计和选择工作， 并且根据供电局的要求进行无功功率补偿的计算设计工作。根据电力系统运行的 可靠性和安全性要求考虑，本次设计采用单母线分段接线的主接线形式。变压器 采用大于总容量 60%70%的两台变压器。 随后运用标幺值的方法进行了短路电流 的计算， 为设备的选择和校验打下了坚实的基础。 电气设备的选择和校验包含 10kv 和 0.4kv
2、两个电压等级下断路器的选择与动热稳定校验、 母线的选择与动热稳定校 验、电流互感器的选择与校验、电压互感器的选择、高压电气柜的选择和避雷器 的选择等。在防雷保护中，按照国标设计要求装设避雷针。在最后根据自己的设 计运用 CAD 制作了该变电所的电气系统图纸。 关键词关键词：变压器，负荷计算，电气设备，主接线 II The Design of Major System of 110kV Substation ABSTRACT This thesis describes a cement plant 110kv substation total buck power supply system d
3、esign basis, principles, methods, and conclusions of the design. In power supply system design, the first under load level and raw materials, the use of load calculation requires coefficient method and performs a comparison transformers and main wiring design and choice of work, and according to the
4、 requirements of power supply bureau reactive power compensation is calculated design work. According to the power systems reliability and safety requirements to consider, this design uses a single bus segment form the main connection wiring. Transformers greater than 60% -70% of total capacity of t
5、he two transformers. Then use pu methods for the calculation of short-circuit current for equipment selection and verification laid a solid foundation. Selection and verification of electrical equipment containing 10kv and 0.4kv two voltage levels breaker selection and dynamic thermal stability chec
6、king, bus selection and dynamic thermal stability check, selection and validation of current transformers, voltage transformers selection, selection and high voltage electrical cabinet selection arrester. In lightning protection, in accordance with the design requirements GB installed lightning rod. In the last according to their own design using CAD produced drawings of the substations electrical system. KEY WORDS: Transformer， Load Calculation， Electricity equipments， Major system III 目 录
