李梓玮,许丽娟.基于概率神经网络的直流滤波器电容器开路故障定位方法[J].电测与仪表,2023,60(1):48-56. Li Ziwei,Xu Lijuan.Open-circuit fault location method of DC filter capacitor based on probabilistic neural network[J].Electrical Measurement & Instrumentation,2023,60(1):48-56.
基于概率神经网络的直流滤波器电容器开路故障定位方法
Open-circuit fault location method of DC filter capacitor based on probabilistic neural network
Aiming at the low efficiency of DC filter capacitor open circuit fault location method in HVDC transmission project, which threatens the safety of maintenance personnel, a probabilistic neural network based DC filter capacitor open circuit fault location method is proposed. Firstly, the principal component analysis method is used to filter the re-dundant information, which not only reduces the dimension of the data, but also obtains the eigenvector that can effectively reflect the operating state of the DC filter capacitor; Then the probabilistic neural network is used to classify the feature vector, so as to realize the location of capacitor open circuit fault. The validity of the proposed location method is verified by using the sample data of DC filter capacitor operation state. At the same time, con-sidering the different number of capacitor elements with open circuit fault, the adaptability of the proposed location method is verified. The experimental results show that the proposed method has a good location effect on the open circuit fault location of DC filter capacitors.
