铜冶炼企业66 kV变电站扩建设计探讨

Discussion on the Expansion Design of 66 kV Substation in Copper Smelting Enterprise

本文以铜冶炼企业66 kV变电站实际情况为基础,通过理论分析、科学计算以及目前的装备水平,对变电站扩建设计方案进行讨论。讨论内容主要包括:扩建部分现场布置方案;分析比较三台变压器三种运行模式下各电气参数,用以确定66 kV侧主回路开关设备和线路配置;10 kV侧铜管形母线载流量、动稳定和热稳定校验计算;二次设备配置和主要保护整定、避雷针移位后避雷保护范围计算等。实践证明,扩建后的变电站运行情况良好,满足企业需求,达到设计目的。

Based on the actual situation of 66 kV substation in copper smelting enterprises,this paper discusses the substation expansion design scheme through theoretical analysis,scientific calculation and the current equipment level.The main contents of the discussion include:the site layout scheme of the extension part.The electrical parameters of three transformers in three operating modes are analyzed and compared to determine the main circuit switchgear and line configuration on the 66 kV side.10 kV side copper tube bus load,dynamic stability and thermal stability check calculation;Secondary equipment configuration and main protection setting,lightning protection range calculation after lightning rod shift,etc.Practice has proved that the expanded substation runs well,meets the needs of enterprises and achieves the design purpose.