摘要
Abstract
The system voltage phase angle is usually random and undefined during switching on or off the isolator when we use the high-voltage grid system for the main transformer no-load charging operation. This often leads to over voltage and inrush current,which is not only harmful to the operation of the equipment,but also causes the pro-tection device malfunction and seriously threat the system security,reliability and stability. So how to take practical methods to control the circuit breaker closing time and angle,thus effectively suppressing air charge generated when the main transformer inrush current is particularly important. In this paper,the author studies and discusses the fea-sible plan combined with main transformer inrush current of 220kV main transformer inrush current of Pingaban hy-dropower station,which provides a reference to prevent such accident.关键词
主变压器/励磁涌流/平班水电厂Key words
main transformer/excitation inrush current/Pingban hydropower station分类
信息技术与安全科学
