有效避免ABB UNITROL 6800励磁系统故障导致机组跳闸的方案
Solution of Effectively Avoiding Unit Tripping Caused by ABB UNITROL 6800 Excitation System Fault
王赟1
作者信息
摘要
ABB UNITROL 6800拥有多重冗余和多CPU配置,通道最大可达三通道.整个控制系统配有两套恒机端电压控制(AVR)、两套恒励磁电流控制(FCR)和一套备用恒励磁电流控制(BFCR),高冗余度的设计和彼此间的合理切换大大地提高了机组运行的安全性和可靠性,但ABB UNITROL 6800励磁系统测量板(CCM)本身存在一个概率极小的故障,且动作权限最高,一旦发生,将直接导致机组跳闸.介绍了一种有效避免因CCM板故障导致机组跳闸的优化方案.
Abstract
ABB UNITROL 6800 has multiple redundancy and multi CPU configurations,with a maxi-mum of three channels.The whole control system is equipped with two sets of constant generator ter-minal automatic voltage control(AVR),two sets of constant field excitation current control,backup con-stant field excitation current control.The design of high redundancy and reasonable switching between each other greatly improve the safety and reliability of unit operation.However,ABB UNITROL 6800 excitation system communication control measurement board(CCM)has a fault with minimal probabili-ty and the highest action authority,which will directly lead to unit tripping once it occurs.An optimization scheme to effectively avoid unit tripping caused by CCM board fault is introduced.
关键词
励磁系统/测量板(CCM)/极小概率故障/机组跳闸Key words
Excitation System/Communication Control Measurement(CCM)/Minimum Probability Fault/Unit Tripping引用本文复制引用
出版年
2024
NETL
NSTL
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