一起母差保护装置异常告警事件分析与建议

Analysis and Suggestion on an Alarm Event of Different Protection Abnormality of the Bus

本文详细分析了一起实际变电站运检生产过程中发生的母差保护装置异常告警事件。首先简要概述了事件经过与排查处理措施,而后简述了分列压板的原理及其重要性,并分析了国网六统一前后分列压板对比情况,引出了本次母差保护异常告警的原因,最后讨论了母线保护对分列压板投退情况的逻辑判断,与分列压板的投退原则,为今后相关运检工作提出相应建议和参考措施。

In this paper,an abnormal alarm event of bus differential protection device is analyzed in detail in the actual production process of substation operation and inspection.Firstly,the incident process and troubleshooting measures are briefly summarized,and then the principle and importance of the separator are briefly described.After the analysis of the comparison of the separate pressing plates before and after the six unifications of State Grid,the cause of the abnormal alarm of the bus differential protection is brought out.At last,the logic judgment of bus protection on the switching on and off of the split pressing plate and the principle of switching on and off of the split pressing plate are discussed,which provides the corresponding suggestions and reference measures for the future relevant operation and inspection work.