摘要
设备线夹起着连接、紧固线路的作用,其健康状况直接影响供电可靠性。针对海洋环境下设备线夹失效造成线路故障占比高的问题,进行设备线夹失效机理分析并提出一种基于A-DBiLSTM(改进神经网络)的寿命评估方法。首先,通过设备线夹运行环境模拟实验建立失效进程与环境因素的关联模型,并提取关键故障特征,制定寿命状态评估指标;其次构建A-DBiLSTM模型,考虑多环境因素、强相关性环境特征对线夹运行状态的影响,输入环境特征和评估指标,并通过Attention机制重点赋权典型强气象特征,实现对线夹的寿命评估;最后基于浙江某海岛配电网设备线夹实际运行数据进行验证,结果表明:该方法能够准确评估配电网设备线夹在不同海洋环境下的寿命状态,对保障线路可靠性、改进线夹运行管理及提升设备质量具有实用价值。
Device clamps are used for connecting and fastening lines,and their health condition directly affects the reliability of power supply.In view of the line faults largely caused by the failure of device clamps under marine envi⁃ronment,the clamp failure mechanism is analyzed and a life assessment method based on an improved neural net⁃work A-DBiLSTM is introduced.Firstly,a correlation model between the failure process and environmental factors is established through the simulation experiment of device clamp operation environment,and the key failure charac⁃teristics are extracted to develop the life state assessment index.Secondly,the A-DBiLSTM model is constructed,and the influence of multi-environmental factors and highly correlated environmental characteristics on the operating state of clamps is considered.The life assessment of clamps is achieved by focusing on the assignment of typical strong meteorological characteristics through the Attention mechanism.Finally,the method is validated based on the actual operation data of device clamps in an island distribution network in Zhejiang province.The results show that the method can accurately assess the life state of device clamps of distribution networks under different marine environments and is of practical value for ensuring line reliability,improving clamp operation management,and en⁃hancing device quality.
作者
周健科
王震
成杰
郑宇鹏
汤波
李铭杰
ZHOU Jianke;WANG Zhen;CHENG Jie;ZHENG Yupeng;TANG Bo;LI Mingjie(State Grid Zhoushan Power Supply Company,Zhoushan,Zhejiang 316000,China;School of Electrical Engineering,Shanghai Electric Power University,Shanghai 200090,China)
出处
《浙江电力》
2023年第4期9-16,共8页
Zhejiang Electric Power
基金
国网浙江省电力有限公司科技项目(5211ZS190071)。
