《毕业论文设计变电站一次接线的设计》.docVIP

摘 要 为了满足铁路发展的需要，对武嘉线进行扩能改造，既有变电所扩能增容，提高电气化铁路供电可靠性，本文就武嘉线梧桐泉牵引变电所进行设计。 本文根据牵引变电所原始资料与要求，对牵引变压器进行容量计算，由计算数据选择牵引变压器的接线方式，牵引变压器的安装容量的确定和选择。根据电气主接线的基本要求和基本设计原则，进行牵引变电所电气主接线方案设计和选择。根据要求选择短路点，对牵引变电所进行短路计算，计算出110kV侧及27.5kV侧短路电流与冲击电流、周期分量电流。由短路计算的结果，进行电气设备的动稳定、热稳定、开关设备的选型和校验。根据牵引变电所的防雷要求，对牵引变电所的防雷接地进行设计。最后，该。 Abstract In order to meet the development of railway ministry. The decision will Wujia Railway all the super-condensation transformation., all existing substation capacity increment. This requires design and equipments selection of Wujia railway Wutongquan traction substation. Based on the original data and the requirements of traction substation, traction transformers for capacity calculation, the calculation data selection traction transformers of connection mode, traction transformers installed capacity to identify and select. According to the basic requirements of main electrical wiring and basic design principles for traction substation main electrical wiring design and selection.. According asked to choose short-circuit point of traction substation for short circuit calculation, calculate the 110kV side and 27.5kV side short-circuit current and surge current, periodic component of current. By a short circuit calculation, dynamic stability of the electrical equipment, thermal stability, switching equipment selection and verification. According traction substation lightning protection requirements of the traction substation grounding lightning protection design. Finally, the Ministry of Railways and the State and the relevant standards and norms, the traction substation primary system designed to meet the standards and norms. Key Words: Electric railway, Main electrical connection, Traction transformer, Equipment selection 目 录 摘 要 I Abstract II 1 绪论 1 1.1 课题的目的意义 1 1.2 主要研究内容 2 2 梧桐泉牵引变电所基本数据 3 2.1 基本数据 3 2.2 负荷计算 3 2.3 短路电流的计算 5 2.4 线路阻抗计算 6 2.5 110kV侧短路电流计算 6 2.6 27.5kV侧短路电流计算 7 3 牵引变电所变压器的选择及容量计算 8 3.1 牵引变压器选择的分析 8 3.1.1 选择原则 8 3.1.2 牵引变压器的接线方式和台数的确定