1000 kV变压器励磁涌流及抑制方法仿真研究  

Simulation Study on Magnetizing Inrush Current of 1 000 kV Transformer and Its Suppression Method

作　　者：程政 魏远 CHENG Zheng;WEI Yuan(Northwest Electric Power Design Institute Co.,Ltd.of CPECC,Xi'an 710075,China)

机构地区：[1]中国电力工程顾问集团西北电力设计院有限公司

出　　处：《电力勘测设计》2019年第11期22-27,33,共7页Electric Power Survey & Design

摘　　要：采用ATP-EMTP电磁暂态仿真软件,建立了计及铁心饱和与磁滞特性的1000 kV变压器励磁涌流仿真模型,研究了多种合闸工况下1000 kV变压器励磁涌流及断路器选相分合闸装置对励磁涌流的抑制效果,结果表明:当考虑断路器动作时间误差时,选相分合闸装置对变压器励磁涌流的抑制效果降低,提出了联合断路器选相分合闸与并联合闸电阻方案,加强励磁涌流抑制效果,保障电力系统安全稳定运行。This paper introduced the generation mechanism and suppression method of transformer magnetizing inrush current.A simulation model of 1000 kV transformer magnetizing inrush current was established with ATP-EMTP electromagnetic transient simulation software,which takes into account core saturation and hysteresis characteristics.The suppression effect of phase-selective closing and shunt resistance of circuit breaker on 1000 kV transformer inrush current was verified respectively.Furthermore,a scheme of combining the phase-selection and closing resistance of the circuit breaker was proposed to strengthen the suppression effect of the inrush current and ensure the safe and stable operation of the power system when considering the action time error of the circuit breaker.

关 键 词：变压器 励磁涌流 选相分合闸 合闸电阻 

分 类 号：TM75[电气工程—电力系统及自动化]