{"title":"Analysis and research of phase-shift push-pull forward ZVS converter","authors":"Guo-Hui Wei, Longjie Sun, Jiaan Yi, Yaqiang Yang","doi":"10.1117/12.2680515","DOIUrl":"https://doi.org/10.1117/12.2680515","url":null,"abstract":"Push forward converter is constrained by its switching loss under high frequency conditions, so it has to use heat sink to increase the volume of the converter, which is contrary to the design concept of small volume and high power density. Based on the traditional push-pull forward converter, this paper adopts phase-shifting control to realize ZVS of the primary side switch through LC resonance generated by the parallel capacitor of the primary side switch, the primary side leakage inductance and the secondary side filter inductance. At the same time, the dead time is set by calculating the duration of each mode in half a cycle. Finally, saber simulation is used to verify the feasibility of realizing ZVS of the push-pull forward converter, so as to provide a basis for the high power It provides a reference for the application under high frequency conditions.","PeriodicalId":201466,"journal":{"name":"Symposium on Advances in Electrical, Electronics and Computer Engineering","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127128787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Electroencephalography artifact removal based on an autoencoder deep network","authors":"You Luo, Siyuan Wang, Hui Shen","doi":"10.1117/12.2680455","DOIUrl":"https://doi.org/10.1117/12.2680455","url":null,"abstract":"The electroencephalography (EEG) signal acquisition process is inevitably affected by a variety of physiological noise signals, including electrooculogram (EOG), electromyography (EMG). The traditional methods of removing EOG and EMG rely heavily on the subjective experience and prior knowledge of the user. However, the ambiguity of artificial judgments can lead to erroneous and misleading interpretations that are insufficient for qualitative analysis. This inaccurate denoising may affect the true information of the signals in the time domain and spectral domain, leading to a decline in the accuracy of the BCI system. In recent years, a variety of EEG denoising methods based on deep learning have been proposed, but their denoising performance needs to be further improved. In this paper, we design a novel autoencoder (AE) neural network to remove artifacts in EEG. The network includes an encoder and a decoder module. The encoder contains five convolutional layers with increasing feature dimension as depth increases, which are responsible for detecting and suppressing artifacts. The decoder contains five deconvolution layers, whose feature dimension decreases gradually, and is used for EEG reconstruction after denoising. The experimental results on semi-synthetic EEG datasets demonstrate that the proposed algorithm outperforms the four benchmark models.","PeriodicalId":201466,"journal":{"name":"Symposium on Advances in Electrical, Electronics and Computer Engineering","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127362623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The core technique and application of knowledge graph in power grid company administrative duty","authors":"Chenying Feng, Xiaodong Xu, Liang Chen, Miao Yu, Xirui Guo","doi":"10.1117/12.2680494","DOIUrl":"https://doi.org/10.1117/12.2680494","url":null,"abstract":"Power knowledge graph of the great application potentials for the power utilities, has become one of the interesting research topics in academia and industry. The power big data onto the deployment of information management system, poses a challenge to the current power grid company's administrative duty system, at the same time, the opportunity for/in applying intelligent management notion into the power grid company has come into being. Based on these above descriptions , the application and exploration of knowledge graph in power grid company administrative duty has been put forward in this paper. Firstly, the on-duty text data is pre-processed; secondly, entity extraction and relationship extraction are carried out on the processed data; finally, the data is stored in the graph database to build the knowledge graph.","PeriodicalId":201466,"journal":{"name":"Symposium on Advances in Electrical, Electronics and Computer Engineering","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128907650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Short-term power load forecasting based on GRU neural network optimized by an improved sparrow search algorithm","authors":"Xu Song, Qiutong Wu, Yinong Cai","doi":"10.1117/12.2680053","DOIUrl":"https://doi.org/10.1117/12.2680053","url":null,"abstract":"Short-term power load forecasting is a very significant content in the operation and dispatch of power system, and it is a significant side to make certain the secure and economic operation of the power system and realize the scientific administration and dispatch of the power grid. By way of eliminating the matters of difficult parameter selection and insufficient forecasting accuracy in traditional forecasting methods, this paper use an improved sparrow search algorithm to optimize gated recurrent unit neural network. Firstly, Preprocess the raw load data.Secondly, use the processed data to train the model, and optimize model parameters with firefly sparrow search algorithm. Finally, carry out the power load forecast on the day to be forecasted, and comparative analysis with other two models, SSA-GRU and GRU , the results of the example indicate that the model established in this paper can advance the prognosis preciseness degree effectively and is effective in the application of short-term power load forecasting.","PeriodicalId":201466,"journal":{"name":"Symposium on Advances in Electrical, Electronics and Computer Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131735387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Portable package detection imaging method based on planar ECT technology","authors":"Yongbo He, Zhaoyang Chen, Shuhao Zhang","doi":"10.1117/12.2680501","DOIUrl":"https://doi.org/10.1117/12.2680501","url":null,"abstract":"In order to realize the rapid detection and imaging of dangerous goods with high dielectric constant at small and mediumsized express points, a three-dimensional imaging method for packaging inspection based on planar ECT technology was proposed; Firstly, the electrode matrix of traditional planar ECT is optimized, and a planar ECT sensor with linear detection electrode array is designed; Then, the simulation model of the package to be tested under different dielectric constants is established. During the detection, the electrode plate is placed on the top of the package and moved slowly to obtain the capacitance signal of the detection electrode plate in different areas of the package; Finally, the iso-surface method is used for partial and full 3D imaging of the object in the package. The experimental results show that the designed detection method can realize three-dimensional imaging of high water content in packaging and metal dangerous goods.","PeriodicalId":201466,"journal":{"name":"Symposium on Advances in Electrical, Electronics and Computer Engineering","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129223798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yan Cheng, Songhua Zhao, Jiansheng Hu, Haifeng Zou, Pin Luo, Yan Fu, Linhui Zhong, Chunlei Liu
{"title":"Knowledge tracking model based on recurrent neural network and transformer","authors":"Yan Cheng, Songhua Zhao, Jiansheng Hu, Haifeng Zou, Pin Luo, Yan Fu, Linhui Zhong, Chunlei Liu","doi":"10.1117/12.2680016","DOIUrl":"https://doi.org/10.1117/12.2680016","url":null,"abstract":"With the continuous development of online education platform, knowledge tracking (KT) has become a key technology to help online education platform provide personalized education. However, the existing knowledge tracking model based on recurrent neural network is difficult to be used for the input of long sequence, and has the problem of long-term dependence. Secondly, although the knowledge tracking model based on Transformer does not have the problem of long-term dependence, it is difficult to capture the input sequence information. Therefore, this paper proposes a knowledge tracking model based on recurrent neural network and transformer. A new position coding method is designed, and LSTM is used to replace the position coding method of Transformer to encode sequence features, so that the model in this paper can not only capture the input sequence information, but also get rid of the long-term dependency problem based on the recurrent neural network, and use GRU network to capture the context information. In addition, an adaptive fusion gate is designed to fuse the global features and context features obtained by Transformer, and use the fused features to predict the students' answers to the next question. In addition, an adaptive fusion gate is designed to fuse the global features and context features obtained by Transformer, and use the fused features to predict the students' answers to the next question.","PeriodicalId":201466,"journal":{"name":"Symposium on Advances in Electrical, Electronics and Computer Engineering","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125602667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ganglong Duan, Jianjun Liu, Weiwei Kong, B. Cui, Jiahao Li
{"title":"Research on click fraud prediction based on multi-algorithm fusion","authors":"Ganglong Duan, Jianjun Liu, Weiwei Kong, B. Cui, Jiahao Li","doi":"10.1117/12.2680157","DOIUrl":"https://doi.org/10.1117/12.2680157","url":null,"abstract":"The detection of click fraud in online advertisements on the Internet for the purpose of extracting advertising fees is one of the important aspects of machine learning applications. In this paper, using the data information of 400000 ad click cheating cases, we use recursive feature elimination method to determine the predictors and use five algorithms of gradient boosted decision tree (GBDT), random forest (RF), Adaboost, KNN and LGbmclassifier to train a single classifier, compare the prediction performance of each type of classifier, and the first three with better prediction performance The top three with better prediction performance were fused with multiple algorithms for prediction. The experimental results show that the random forest, Lgbmclassifier and Adaboost algorithms have the highest prediction accuracy, 87%, 83% and 79%, respectively, with AUC values of 0.90, 0.87 and 0.81. The prediction accuracy of the multi-algorithm fusion model taken in this paper can improve by 3% compared to the single algorithm with the best prediction performance, reaching 90%.","PeriodicalId":201466,"journal":{"name":"Symposium on Advances in Electrical, Electronics and Computer Engineering","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126789097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dali Xue, Desheng Wang, S. Zhou, Fan Chen, Datie Huang
{"title":"Research on image recognition of power control system based on BHS-CTPN and AA-CRNN","authors":"Dali Xue, Desheng Wang, S. Zhou, Fan Chen, Datie Huang","doi":"10.1117/12.2680450","DOIUrl":"https://doi.org/10.1117/12.2680450","url":null,"abstract":"With the continuous increase of the power grid scale, the amount of information handled by regulators is increasing. In order to solve the problem that all kinds of information and data cannot be exchanged, and to effectively control all kinds of events, the State Grid Ruian Power Supply Company has developed a set of intelligent control auxiliary system. Based on this, this paper proposes an image recognition method for power regulation and control system based on BHS-CTPN and AA-CRNN to detect and identify the content of the power regulation and control interface. The experiment shows that the method proposed in this paper can automatically identify and process the alarm information and dynamic operation data in combination with the intelligent regulation and control auxiliary system, and achieve full response to all kinds of information. Under the premise of ensuring security, the optimization of power grid operation management mode is realized, and the dispatching ability and response efficiency of power grid alarm are improved.","PeriodicalId":201466,"journal":{"name":"Symposium on Advances in Electrical, Electronics and Computer Engineering","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122219687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A modeling technique for generalized power quality data","authors":"Ruichen Sun, K. Dong, Jianfeng Zhao","doi":"10.1117/12.2680243","DOIUrl":"https://doi.org/10.1117/12.2680243","url":null,"abstract":"Power quality data mining is of great potential in both supply-side and demand-side energy management system. In recent decades, with the wide application of flexible AC/DC power grid and grid-connected renewable energy generation, power quality data has been unified as a generalized model for improving power quality. Meanwhile, power quality monitoring system has also been deployed on a large scale. In order to further highlight the availability and usability of power quality data, the paper integrates various types of information to support power quality analysis. A multimodal data system is constructed to process information collected in different forms into a multi-dimensional data model, which can be pretrained to provide integrated features for various power quality analysis tasks. Firstly, the three data types of voltage waveforms, texts and images are embedded through feature extraction, low-dimensional spatial representation and CNNbased representation, respectively. Then all information is fused with the interaction model based on Attention mechanism. The output of the data model can be sent to networks specific to certain downstream tasks.","PeriodicalId":201466,"journal":{"name":"Symposium on Advances in Electrical, Electronics and Computer Engineering","volume":"52 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116693645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"An optimal configuration method of new generation and high-capacity synchronous condenser for enhancing the power grid voltage support","authors":"Xiaoxiao Qi, Yongjun Yu, Xiaoyun Wang, Yue Ma, Jingling Cheng","doi":"10.1117/12.2680514","DOIUrl":"https://doi.org/10.1117/12.2680514","url":null,"abstract":"Aiming at the weak voltage support of the long-chain power grid, an optimal configuration method of condensers considering system stability constraints is proposed. To add condensers to key buses to improve the voltage support strength of the power grid. The basic data of Southern Xinjiang Power Grid in winter operation mode was collected, and statistical prediction and analysis of load and power surplus were made. After preliminarily selecting the location for the 750kV backbone grid, the location of the condenser was determined. Further, the weak area of 220kV bus voltage stability to achieve the accurate location of the condenser was determined. With the stability of the power grid as the constraint and economic optimization as the goal, the condenser capacity configuration is realized. The power grid model is built on the PSASP software platform, and the power flow calculation and voltage stability analysis are carried out. The results show that the proposed method can effectively improve the","PeriodicalId":201466,"journal":{"name":"Symposium on Advances in Electrical, Electronics and Computer Engineering","volume":"10 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123742379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}