Advances in Engineering Technology Research最新文献_第3页

Fast calculation and analysis of excitation inrush current peak of converter transformer under different remanence conditions 不同剩磁条件下变流器变压器励磁涌流峰值的快速计算与分析

Advances in Engineering Technology Research Pub Date : 2024-02-19 DOI: 10.56028/aetr.9.1.846.2024

Chen Wang, Jianlin Li, Rigao Shu, Cheng Xie, Zheng Cao, Zhiwei Chen

{"title":"Fast calculation and analysis of excitation inrush current peak of converter transformer under different remanence conditions","authors":"Chen Wang, Jianlin Li, Rigao Shu, Cheng Xie, Zheng Cao, Zhiwei Chen","doi":"10.56028/aetr.9.1.846.2024","DOIUrl":"https://doi.org/10.56028/aetr.9.1.846.2024","url":null,"abstract":"In order to solve the problems of fixed model parameters and low efficiency in the traditional numerical method and software simulation method for transformer excitation inrush current. In this paper, the response surface fitting method is applied to the calculation of the excitation inrush current, which realizes the efficient calculation and analysis of the peak value of the excitation inrush current with the change of the closing Angle under the condition of different remanence of the main column. Firstly, the generation mechanism of transformer excitation inrush current was theoretically analyzed, and the key influencing factors were extracted. Secondly, parameter modeling is used to establish the converter transformer model in this paper. Finally, the response surface model between initial winding current, closing Angle and excitation inrush current peak was fitted by response surface test design, and the accuracy of the response surface was verified. It provides technical reference for the fast calculation and analysis of transformer excitation inrush current and the digital twin technology of power transformer.","PeriodicalId":355471,"journal":{"name":"Advances in Engineering Technology Research","volume":"34 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140449794","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}

引用次数: 0

Photonic Approach to Multi-band Dual-chirp Microwave Waveform Generation with Quadruple Bandwidth 具有四倍带宽的多波段双啁啾微波波形生成的光子方法

Advances in Engineering Technology Research Pub Date : 2024-02-19 DOI: 10.56028/aetr.9.1.762.2024

Haowen Zhang, Qiuze Yu

{"title":"Photonic Approach to Multi-band Dual-chirp Microwave Waveform Generation with Quadruple Bandwidth","authors":"Haowen Zhang, Qiuze Yu","doi":"10.56028/aetr.9.1.762.2024","DOIUrl":"https://doi.org/10.56028/aetr.9.1.762.2024","url":null,"abstract":"We propose a scheme for generating a microwave waveform with dual-band, dual-chirp, linearly chirped characteristics and quadruple chirp bandwidth. In this scheme, we employ two cascaded Mach-Zehnder modulators (MZMs), with each modulated by a microwave signal and a linearly frequency modulated (LFM) signal. This modulation technique extends the LFM signal to multiple frequency bands and enhances its bandwidth. By properly adjusting the microwave signal's frequency and the LFM's carrier frequency, we can intelligently combine the up-chirp and down-chirp signals obtained after heterodyne beating in the photodetector (PD). This combination results in the creation of multi-band dual-chirp signals with quadruple chirp bandwidth. Our simulation demonstrates the simultaneous generation of dual-chirp microwave waveforms in the X, Ka, U, and V bands, with central frequency-bandwidth ranges of 10GHz-4GHz, 30GHz-4GHz, 50GHz-4GHz, and 70GHz-4GHz respectively. These dual-chirp signals possess a bandwidth four times that of the driving chirp signal, leading to a Time Bandwidth Product (TBWP) four times greater than that of the driving chirp signal. Consequently, the proposed scheme has the potential to significantly improve range Doppler resolution in modern radar systems. Additionally, the high-frequency and large-bandwidth dual-band dual-chirp LFM signals generated by this approach are anticipated to enhance range resolution and detection range in multitarget radar systems.","PeriodicalId":355471,"journal":{"name":"Advances in Engineering Technology Research","volume":"30 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140450418","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}

引用次数: 0

Research on digital transformation and application of key business of power grid planning 电网规划关键业务数字化转型与应用研究

Advances in Engineering Technology Research Pub Date : 2024-02-19 DOI: 10.56028/aetr.9.1.777.2024

Xianfu Gong, Yaodong Li, Bo Peng, Zhu Miao, Xiong Xiong

{"title":"Research on digital transformation and application of key business of power grid planning","authors":"Xianfu Gong, Yaodong Li, Bo Peng, Zhu Miao, Xiong Xiong","doi":"10.56028/aetr.9.1.777.2024","DOIUrl":"https://doi.org/10.56028/aetr.9.1.777.2024","url":null,"abstract":"As the basis for the construction and development of the power grid industry, power grid planning not only affects the development direction of power grid enterprises, but also determines the economic level, social stability and quality of life of urban residents. In the construction and development of the new era, the digital transformation of power grid planning business is an important part of the construction and improvement of the digital power grid system, which will guide the power grid planning business to develop stably in the direction of intelligence, automation and information, actively create a safe and reliable smart grid, and lay a solid foundation for improving the development level of power grid enterprises. Therefore, after understanding the current digital transformation goals and development status of power grid planning business, this paper mainly explores the specific plan for the transformation of power grid planning business of a regional power enterprise according to the structure and transformation requirements of the new power system, and finally explores the practical significance of digital transformation according to the construction effect and development goals, providing a reference for the reform and development of the power industry.","PeriodicalId":355471,"journal":{"name":"Advances in Engineering Technology Research","volume":"11 17","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140450529","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}

引用次数: 0

Optimal Operation Model of Ecological Flow of Hydropower Station Based on Genetic Algorithm and Neural Network 基于遗传算法和神经网络的水电站生态流量优化运行模型

Advances in Engineering Technology Research Pub Date : 2024-02-19 DOI: 10.56028/aetr.9.1.785.2024

Qiyou Wang, Jiping Chen, Liang Cui

引用次数: 0

Influencing Factor and Research Progress of Neonatal Nutritional Support 新生儿营养支持的影响因素和研究进展

Advances in Engineering Technology Research Pub Date : 2024-02-19 DOI: 10.56028/aetr.9.1.757.2024

Jing Zhang

引用次数: 0

Topology-based Resilience Assessment of Port Multimodal Transport Networks: A Case Study of Shanghai Port 基于拓扑的港口多式联运网络弹性评估：上海港案例研究

Advances in Engineering Technology Research Pub Date : 2024-02-19 DOI: 10.56028/aetr.9.1.818.2024

Xi Dong, Junyi Min, Yiheng Xi, Chenming Jiang

{"title":"Topology-based Resilience Assessment of Port Multimodal Transport Networks: A Case Study of Shanghai Port","authors":"Xi Dong, Junyi Min, Yiheng Xi, Chenming Jiang","doi":"10.56028/aetr.9.1.818.2024","DOIUrl":"https://doi.org/10.56028/aetr.9.1.818.2024","url":null,"abstract":"As transit nodes in the field of international trade, ports are of critical importance for establishing and maintaining the effectiveness of the trade supply chain. However, the system performance of ports is vulnerable to disruptions caused by unexpected events such as natural disasters, accidental catastrophes, and public health emergency. These disruptive events will have serious negative impacts on the normal operation performance of ports and international trade among countries. This paper is to propose a comprehensive assessment framework of the system resilience of the port multimodal transport networks before and after the occurrence of disruption events, which can effectively improve its ability to deal with emergencies, minimize losses, and enhance the system performance levels. This paper also establishes several simulation experiments focusing on the full lifecycle of resilience based on topology of the transport networks, and simulates a variety of scenarios regarding different damage and recovery modes, such as deliberate attack, random attack, planned recovery, and random recovery, in the assessment process. Then the actual transport situation of Shanghai port is taken as a case study, and three multimodal transport networks including the sea-rail network, the sea-road network, and the sea-road-rail network under different disruption scenarios are compared，and evaluate the evolutions of the network resilience of the multimodal transport networks of Shanghai port stage by stage. In addition, managerial suggestions are also proposed based on the resilience assessments of different disruption scenarios to maximize the resilience of multimodal transport networks of Shanghai port.","PeriodicalId":355471,"journal":{"name":"Advances in Engineering Technology Research","volume":"22 19","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140450724","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}

引用次数: 0

System of Smart Home Based on Speech Recognition with Machine Learning 基于机器学习语音识别的智能家居系统

Advances in Engineering Technology Research Pub Date : 2024-02-19 DOI: 10.56028/aetr.9.1.796.2024

Baihua Li

引用次数: 0

Preparation and Properties of Graphene Flexible Membrane 石墨烯柔性薄膜的制备与性能

Advances in Engineering Technology Research Pub Date : 2024-02-19 DOI: 10.56028/aetr.9.1.791.2024

Yao Yao, Chao Han, Zijun Guo, Jin Dai, Bichen Zhou

引用次数: 0

Firing Accuracy in Rotor Dynamics Prediction of Unbalanced Mass and Bearing Clearance 不平衡质量和轴承间隙在转子动力学预测中的点火精度

Advances in Engineering Technology Research Pub Date : 2024-02-19 DOI: 10.56028/aetr.9.1.803.2024

Jian Xu, Zhen Yang, Wanchuan Liu

引用次数: 0

Research on Flare Burner for Venting in Gas Transmission Station 输气站排气用火炬燃烧器研究

Advances in Engineering Technology Research Pub Date : 2024-02-19 DOI: 10.56028/aetr.9.1.809.2024

Xiangmin Dong, Nanxi Zhai, Xuan Liu, Qin Zhang, Weihao Li

{"title":"Research on Flare Burner for Venting in Gas Transmission Station","authors":"Xiangmin Dong, Nanxi Zhai, Xuan Liu, Qin Zhang, Weihao Li","doi":"10.56028/aetr.9.1.809.2024","DOIUrl":"https://doi.org/10.56028/aetr.9.1.809.2024","url":null,"abstract":"With the widespread application of natural gas, the venting of remaining natural gas is an issue that cannot be ignored. Direct venting causes serious environmental pollution, so thermal venting, also known as combustion venting, has become an important way to solve environmental pollution problems. This simulation first established two different types of burners, cluster and array, to quantitatively analyze the flame combustion characteristics. It simulated the distribution patterns of velocity, temperature, and key component concentrations of the two burners under the same number of holes and fuel flow rate. The research results indicate that due to the existence of oblique jet flow in the converging and array types, a reflux zone is formed at the outlet of the diffuser, and natural gas and air are mixed more thoroughly, resulting in a more stable flame. By comparing the burnout rate and combustion failure rate of the two types of burners, it was found that the convergent flame height and residual natural gas content during combustion were the lowest, resulting in better combustion efficiency. On this basis, while ensuring the same flow rate, the number of converging combustion holes was increased, the model parameters were improved, and it was found that the flame height was further reduced. At the same time, while maintaining the combustion removal rate, the burnout rate was improved. The development of the above-mentioned flare burner is of great significance in improving combustion efficiency, reducing flame height, and reducing environmental pollution caused by venting.","PeriodicalId":355471,"journal":{"name":"Advances in Engineering Technology Research","volume":"30 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140450940","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}

引用次数: 0