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首页> 外文期刊>International journal of systems assurance engineering and management >Distance relay reliability enhancement using false trip root cause analysis
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Distance relay reliability enhancement using false trip root cause analysis

机译：使用错误的跳闸根本原因分析提高距离继电器的可靠性

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摘要

A distance relay, which is widely used for protecting a power transmission line as the primary as well as remote backup device, may be affected by the power disturbances such as power swings and post-faults. Consequently, false trips of protection system may be resulted. Root cause analysis based on fault tree analysis has been used to identify disturbances which may lead to false trips. Once the critical root causes have been identified, conventional mitigation measures are used and then, new blocking function and digital filters are proposed to enhance the security of the system. The quantitative analysis of the improved model shows a significant increase in the security which implies an appreciable enhancement of the reliability of the considered protection system.
机译：距离继电器广泛用作保护输电线路的主要和远程备用设备，它可能会受到诸如电源摆幅和故障后之类的电源干扰的影响。因此，可能导致保护系统误跳闸。基于故障树分析的根本原因分析已用于识别可能导致误跳闸的干扰。一旦确定了关键的根本原因，便可以使用常规的缓解措施，然后提出新的阻止功能和数字滤波器，以增强系统的安全性。改进模型的定量分析表明，安全性显着提高，这意味着所考虑的保护系统的可靠性有了明显提高。

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