基于多源信息的数字式继电保护装置隐性故障检测

Hidden Fault Detection of Digital Relay Protection Devices Based on Multi-Source Information

【目的】当前数字式继电保护装置隐性故障检测节点布设形式以独立设置为主,故障检测范围受到限制,导致后期误动识别次数下降,为此提出基于多源信息的数字式继电保护装置隐性故障检测方法。【方法】根据测试需求,采用网格式的部署结构布设检测节点,打破故障检测范围的限制,并对采集的数据进行预处理。在此基础上,设计多源信息继电保护装置隐性故障检测模型,并采用差动量核验的方式来实现隐性故障检测处理。【结果】测试结果表明,针对选定的4个测试区域,结合线路1、线路2和线路3的运行状态,对其进行隐性故障的检测,最终得出的误动识别次数均可以达到15次以上。【结论】基于多源信息的辅助和支持下设计的隐性故障检测方法更加高效、灵活、稳定,针对性明显提高,具有实际的应用价值,实现了故障检测形式的创新。

[Purposes]The current layout of hidden fault detection nodes in digital relay protection devices is mainly independent,and the fault detection range is limited,resulting in a decrease in the number of misoperation identification in the later stage.Therefore,a digital relay protection device hidden fault de⁃tection method based on multi-source information is proposed.[Methods]Firstly,based on the current testing requirements,a network format deployment structure is adopted to deploy detection nodes,break⁃ing the limitations of fault detection scope,and preprocessing the collected data.Then,based on this,a hidden fault detection model for multi-source information relay protection devices is designed,and dif⁃ferential verification is used to achieve hidden fault detection and processing.[Findings]The test results show that for the selected four test areas,combined with the operating status of Line 1,Line 2,and Line 3,hidden fault detection can be carried out,and the final misoperation identification frequency can reach more than 15 times.[Conclusions]With the assistance and support of multiple sources of information,the designed hidden fault detection method is more efficient,flexible,and stable,and has significantly improved pertinence,which has practical application significance,achieving innovation in the form of fault detection.