UNITROL6800励磁系统故障引起跳机原因分析及改进

摘要

Introduction was made to the unit trip accident caused by the UNITROL6800 excitation system fault. The accident cause was ana-lyzed and the excitation system was veriifed. This paper gave the corresponding rectiifcation and reform program and carried out anti-interfer-ence reform. The actual operation shows that this scheme raises the reliability of UNITROL6800 system and can eliminate adverse consequences caused by the system misoperation effectively.%介绍了一起UNITROL6800励磁系统故障引起的机组跳闸事故，对事故原因进行了分析与励磁系统试验验证，给出相应的整改方案，并进行了抗干扰改造。实际运行情况表明，该方案提高了UNITROL6800系统的可靠性，且有效杜绝了系统误动作引起跳机的不良后果。