高压内置式高阻抗主变并网方式研究  

Research on Grid-Connection Mode of High Voltage Built-in High Impedance Main Transformer

作　　者：付威 FU Wei(Shenzhen Power Supply Bureau Co.,Ltd.,Shenzhen 518000,China)

机构地区：[1]深圳供电局有限公司,广东深圳518000

出　　处：《电工技术》2020年第8期79-81,83,共4页Electric Engineering

摘　　要：随着大中型城市的负荷密度增长,区域短路电流增大,高阻抗主变启动过程励磁涌流过大导致并网失败的现象屡见不鲜。文章阐述各类高阻抗主变结构优缺点,特别针对220 kV高压内置式高阻抗主变绕组结构特点,以启动定值为基础,通过充电模拟仿真,分析高阻抗主变充电过程各电气量的变化,提出增配涌流抑制器匹配优化高压开关特性的措施,提高高阻抗主变并网成功率。With the increase of load density in large and medium-sized cities,the regional short circuit current increases,and it is common to see failures of grid connection caused by excessive inrush current in the startup process of high impedance main transformer.This paper describes the advantages and disadvantages of various high impedance main transformer structures.Especially for the winding structure characteristics of the 220 kV high voltage built-in high impedance main transformer,based on the startup setting,the changes of electric quantities of the high impedance main transformer during charging are analyzed through the simulation of charging.The measures of adding inrush current suppressor and optimizing switch characteristics are put forward to improve the success rate of grid connection of the high impedance main transformer.

关 键 词：高压内置 高阻抗主变 模拟仿真 涌流抑制器 开关特性 

分 类 号：TM426[电气工程—电器]