摘要
随着变电站智能化技术的飞速发展,二次设备数量急剧增长,通信网络配置日趋复杂,高效准确地实现继电保护二次回路故障诊断关系着智能变电站的安全稳定。为了降低智能变电站自动化运维成本,研究了基于MobileViT的继电保护二次回路故障诊断技术。将二次设备报文接收状态以及交换机端口流量信息作为保护回路的故障特征,结合矩阵式编码技术获取保护回路故障特征的二维图像形式;利用先进的MobileViT算法构建继电保护二次回路故障诊断模型,并提出在线操作方法。以典型110 kV智能变电站二次系统为例,验证所提方法的可行性和有效性。算例结果表明,基于MobileViT的故障诊断模型能够准确识别保护回路中的二次设备及通信链路故障。与其他方法的对比研究证明了所提方法在特征构造、辨识误差、诊断精度等方面存在优势。
With the rapid development of smart substation technology,the number of secondary equipment has increased dramatically,and the configuration of communication networks has become increasingly complex.Efficient and accurate fault diagnosis of relay protection secondary circuits is crucial for the safety and stability of smart substations.To reduce the substation automation operation and maintenance,this paper studies and then proposes a fault diagnosis method for relay protection secondary circuits based on MobileViT.The message receiving status of the secondary equipment and the traffic information of the switch port are utilized as the fault features of the protection circuit.Based on matrix coding technology,the two-dimensional image form of the protection circuit fault features is obtained.The fault diagnosis model of the relay protection secondary circuit is constructed using the advanced MobileViT network,and the online operation steps are provided.The feasibility and effectiveness of the proposed method are verified by taking the secondary system of a typical 110kV smart substation as an example.The example results demonstrate that the fault diagnosis model based on MobileViT can accurately identify secondary equipment and communication link faults within the protection circuit.A comparative study with other methods highlights the advantages of the proposed method in feature construction,identification error,and accuracy.
作者
郑茂然
余江
史泽兵
高宏慧
姜健琳
沈亚东
ZHENG Maoran;YU Jiang;SHI Zebing;GAO Honghui;JIANG Jianlin;SHEN Yadong(Power Dispatching Control Center of China Southern Power Grid Co.,Ltd.,Guangzhou 510630,Guangdong,China;Shanghai Zexin Power Technology Co.,Ltd.,Shanghai 201206,China)
出处
《电网与清洁能源》
北大核心
2025年第6期31-38,共8页
Power System and Clean Energy
基金
南方电网有限公司科技项目(ZDKJXM20222034)。
