Ain Shams Engineering Journal最新文献

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A new adaptive droop control strategy for improved power sharing accuracy and voltage restoration in a DC microgrid 改进直流微电网功率共享精度和电压恢复的新型自适应下垂控制策略
IF 6 2区 工程技术
Ain Shams Engineering Journal Pub Date : 2024-06-19 DOI: 10.1016/j.asej.2024.102899
{"title":"A new adaptive droop control strategy for improved power sharing accuracy and voltage restoration in a DC microgrid","authors":"","doi":"10.1016/j.asej.2024.102899","DOIUrl":"10.1016/j.asej.2024.102899","url":null,"abstract":"<div><p>In a DC Microgrid, accurate power sharing and voltage restoration are two primary control goals to guarantee power quality and reliable operation. Inaccurate power sharing is a significant concern due to discrepancies in feeder line resistance, faulty equipment, lack of monitoring and control, and nonlinear load. Moreover, inaccurate power sharing may lead to overloading of converters and cause a cascade of failures throughout the entire system. This study proposes a new adaptive droop control strategy to address these challenges. To enhance accurate power sharing, error current sharing is formulated by considering bus current and total rated current. This is regulated by the adaptive controller to adjust droop resistance. Additionally, the impact of droop voltage because of feeder line resistance is considered in the proposed strategy. The primary control loop regulates the output voltage of converter utilizing the proposed observer-based optimum sliding mode control (OOSMC). The controller gain of the OOSMC is optimized using a gradient-based method to enhance transient and steady state response of the converter output. In the secondary loop, the twin-delayed deep deterministic policy gradient (TD3) for voltage restoration is employed with a new reward function to optimally tune the proportional-integral (PI) controller. Finally, the superiority of the proposed strategy is evaluated through rigorous testing scenarios, including the use of constant power load (CPL) and sudden failure in the converters. Moreover, the proposed strategy is validated by simulations and laboratory-based experiments. The results show that the OOSMC outperforms GA and PSO while the TD3 has better performance than traditional PI. Furthermore, when the equivalent power-rated converters are implemented in the system, the proposed strategy can transfer identical power sharing of 4 W to the load and provide accurate current sharing of 0.167 A compared to conventional droop control while the DC bus voltage is maintained at the 24 V reference value. In the case of different power-rated converters, the proposed strategy can achieve power sharing accuracy. The first, second and third converters supply 2 W, 4 W, and 6 W, respectively, to the load and provide accurate current sharing. Meanwhile the DC bus voltage can be kept at the reference voltage of 24 V. In the scenario of various kinds of disturbances, the proposed strategy can achieve accurate power and current sharing when the system is tested under load and input voltage variations. Meanwhile the DC bus voltage always returns to the voltage reference. Moreover, the proposed strategy can share power and current accurately when the converter occurs a sudden failure.</p></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2090447924002740/pdfft?md5=d0d1fb332d176afc2740aeedb2981488&pid=1-s2.0-S2090447924002740-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141729371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Designing an efficient adaptive EWMA model for normal process with engineering applications 为工程应用中的正常过程设计高效的自适应 EWMA 模型
IF 6 2区 工程技术
Ain Shams Engineering Journal Pub Date : 2024-06-17 DOI: 10.1016/j.asej.2024.102904
{"title":"Designing an efficient adaptive EWMA model for normal process with engineering applications","authors":"","doi":"10.1016/j.asej.2024.102904","DOIUrl":"10.1016/j.asej.2024.102904","url":null,"abstract":"<div><p>Stability in process parameters is required to ensure the quality of the finished item. Control charts, as one of the critical parts of statistical process monitoring (<span><math><mrow><mi>SPM</mi></mrow></math></span>), have seen widespread use across many disciplines for detecting and responding to shifts in process parameters. The adaptive <span><math><mrow><mi>EWMA</mi></mrow></math></span> (<span><math><mrow><mi>AEWMA</mi></mrow></math></span>) control chart<!--> <!-->is a well-known scheme that detects both small and large process shifts by integrating the features of the Shewhart and classical <span><math><mrow><mi>EWMA</mi></mrow></math></span> charts. In this study, we propose an enhanced <span><math><mrow><mi>AEWMA</mi></mrow></math></span> chart, termed the <span><math><mrow><mi>EAEWMA</mi></mrow></math></span> chart, that efficiently monitors small and large process mean shifts simultaneously. The proposed <span><math><mrow><mi>E</mi><mi>A</mi><mi>E</mi><mi>W</mi><mi>M</mi><mi>A</mi></mrow></math></span> chart enhances the existing <span><math><mrow><mi>AEWMA</mi></mrow></math></span> chart using the shift estimator, based on the hybrid <span><math><mrow><mi>EWMA</mi></mrow></math></span> (<span><math><mrow><mi>HEWMA</mi></mrow></math></span>) statistic. The Monte Carlo simulation approach is employed as the computational method to obtain the numerical findings for the various performance metrics. The <span><math><mrow><mi>E</mi><mi>A</mi><mi>E</mi><mi>W</mi><mi>M</mi><mi>A</mi></mrow></math></span> chart is compared with various existing charts, including <span><math><mrow><mi>A</mi><mi>E</mi><mi>W</mi><mi>M</mi><mi>A</mi></mrow></math></span>, <span><math><mrow><mi>H</mi><mi>E</mi><mi>W</mi><mi>M</mi><mi>A</mi></mrow></math></span>, <span><math><mrow><mi>E</mi><mi>W</mi><mi>M</mi><mi>A</mi></mrow></math></span>, <span><math><mrow><mi>A</mi><mi>C</mi><mi>S</mi><mi>U</mi><mi>M</mi></mrow></math></span>, and <span><math><mrow><mi>I</mi><mi>A</mi><mi>C</mi><mi>C</mi><mi>U</mi><mi>S</mi><mi>U</mi><mi>M</mi></mrow></math></span>, in zero- and steady-state scenarios. Conclusively, two practical applications of the <span><math><mrow><mi>EAEWMA</mi></mrow></math></span> chart are presented, demonstrating its value for practitioners and engineers and illustrating its efficacy in real-world scenarios.</p></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S209044792400279X/pdfft?md5=6d5f27f63151682d43b3f4e2bbdd8c75&pid=1-s2.0-S209044792400279X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141729270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A proposal of analytical formulations to calculate safety lead times under demand variability. A case study 在需求多变的情况下计算安全提前期的分析公式建议。案例研究
IF 6 2区 工程技术
Ain Shams Engineering Journal Pub Date : 2024-06-15 DOI: 10.1016/j.asej.2024.102902
{"title":"A proposal of analytical formulations to calculate safety lead times under demand variability. A case study","authors":"","doi":"10.1016/j.asej.2024.102902","DOIUrl":"10.1016/j.asej.2024.102902","url":null,"abstract":"<div><p>This paper deals with the issue of safety lead time (SLT) calculations in production-inventory systems in presence of both demand and replenishment lead time variability. We provide some formulations of the SLT and numerically show their performance as compared to a benchmark in the literature. Thus the main objective of this paper is to provide analytical formulations to calculate the SLT that contemplate demand variability. To this end, a literature review was done to analyze the approaches and justifications of the different revised research works to identify reference formulations according to the objectives of this work. A supply chain from the automotive sector was used as the study frame and to validate the proposed formulations. This supply chain involved two companies: a car manufacturer and a first-tier supplier. In order to compare the proposed formulations with one another, and with that currently used by the first-tier supplier and is the study object, three parameters were used: safety stock, the number of times stockout occurs and the mean stock. They allowed the final selection of the most suitable SLT formulation for each case study.</p></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2024-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2090447924002776/pdfft?md5=0a4eeef0498d762941895f26aac25090&pid=1-s2.0-S2090447924002776-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141412510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Entropy optimized radiative flow conveying hybrid nanomaterials (MgO-MoS2/C2H6O2) with melting heat characteristics and Cattaneo-Christov theory: OHAM analysis 熵优化辐射流输送混合纳米材料(氧化镁-
IF 6 2区 工程技术
Ain Shams Engineering Journal Pub Date : 2024-06-14 DOI: 10.1016/j.asej.2024.102892
{"title":"Entropy optimized radiative flow conveying hybrid nanomaterials (MgO-MoS2/C2H6O2) with melting heat characteristics and Cattaneo-Christov theory: OHAM analysis","authors":"","doi":"10.1016/j.asej.2024.102892","DOIUrl":"10.1016/j.asej.2024.102892","url":null,"abstract":"<div><p>Here flow for radiative hybrid-nanomaterial (<span><math><mrow><mi>MgO</mi><mo>+</mo><mi>M</mi><mi>o</mi><msub><mi>S</mi><mn>2</mn></msub></mrow></math></span>) satisfying Darcy-Forchheimer relation is addressed. Ethylene glycol <span><math><mrow><msub><mi>C</mi><mn>2</mn></msub><msub><mi>H</mi><mn>6</mn></msub><msub><mi>O</mi><mn>2</mn></msub></mrow></math></span> is utilized as a base fluid. Magnesium oxide <span><math><mrow><mo>(</mo><mi>M</mi><mi>g</mi><mi>O</mi><mo>)</mo></mrow></math></span> and Molybdenum disulfide <span><math><mrow><mo>(</mo><mi>M</mi><mi>o</mi><msub><mi>S</mi><mn>2</mn></msub><mo>)</mo></mrow></math></span> are considered as distinct nanoparticles. Thermal expression is examined through heat generation and viscous dissipation. Analysis for Cattaneo-Christov theory is carried out. Condition for melting heat is deliberated. Entropy generation is examined. Variable thermal conductivity of hybrid nanomaterial is taken. Suitable transformations are implemented to obtain nonlinear dimensionless systems. Optimal homotopy analysis method (OHAM) is implemented for computations. Temperature, velocity and entropy generation are scrutinized physically. Nusselt number and skin friction are discussed. Conclusion synthesis salient points. Present work is relevant in metallurgical engineering and polymer processing. The findings conclude that Forchheimer number correspond to decline in velocity. Entropy rate and thermal field have similar trend for heat generation variable. A decrease in velocity against melting variable is noted. Temperature increases for variable thermal conductivity and thermal relaxation parameters. Entropy optimization improved for Brinkman number. Skin friction decays for porosity parameter and Forchheimer number. Skin friction improves for melting variable and Forchheimer number. Entropy augments against higher thermal relaxation time. Higher melting variable lead to an enhancement for Nusselt number. There is an improvement for radiation through Nusselt number and temperature.</p></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2090447924002673/pdfft?md5=7625dad2917225b122af0df0d0e8e427&pid=1-s2.0-S2090447924002673-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141405676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Artificial intelligence optimization of Alendronate solubility in CO2 supercritical system: Computational modeling and predictive simulation 人工智能优化阿仑膦酸钠在二氧化碳超临界系统中的溶解度:计算建模和预测模拟
IF 6 2区 工程技术
Ain Shams Engineering Journal Pub Date : 2024-06-13 DOI: 10.1016/j.asej.2024.102905
{"title":"Artificial intelligence optimization of Alendronate solubility in CO2 supercritical system: Computational modeling and predictive simulation","authors":"","doi":"10.1016/j.asej.2024.102905","DOIUrl":"10.1016/j.asej.2024.102905","url":null,"abstract":"<div><p>Finding different technical procedures to increase the solubility of orally-taken medicines play a vital key role towards reducing their undesirable side effects and improving their therapeutic effectiveness.<!--> <!-->Low solubility of drugs may result in the emergence of disparate challenges like poor gastro-intestinal absorption, inadequate bioavailability, and difficulty of metabolism. In this research, it has been tried to model the solubility of Alendronate medication based on two input parameters of temperature and pressure. The pressure was considered to be between 120–300 bar, and temperature was set between 308–338 K for the entire analysis. For this purpose, the support vector machine model is considered. This model and the bagging and boosting models that have been used to strengthen it have been evaluated as three different models. Based on the R criterion, the SVR model has a score of 0.926, while Begging and AdaBoost have scores of 0.881 and 0.983, respectively. Based on this, the AdaBoost model can be considered a more successful ensemble model that has increased the SVR performance. Using this ensemble method, the RMSE error rate is 4.30E-02 and MAE is 2.96E-02.</p></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2090447924002806/pdfft?md5=906283d782a3dbb6bd36c67e4bed425c&pid=1-s2.0-S2090447924002806-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141408512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Integrating Bayesian networks and ontology to improve safety knowledge management in construction behavior: A conceptual framework 整合贝叶斯网络和本体论,改善建筑行为中的安全知识管理:概念框架
IF 6 2区 工程技术
Ain Shams Engineering Journal Pub Date : 2024-06-13 DOI: 10.1016/j.asej.2024.102906
{"title":"Integrating Bayesian networks and ontology to improve safety knowledge management in construction behavior: A conceptual framework","authors":"","doi":"10.1016/j.asej.2024.102906","DOIUrl":"10.1016/j.asej.2024.102906","url":null,"abstract":"<div><p>Addressing the challenges of intelligent decision support within traditional management approaches, this study presents a novel conceptual framework for enhancing sustainability in construction behavioral safety management. By integrating Bayesian network (BN) modeling and ontology, our framework enables robust decision-making and fosters knowledge sharing. Key to our approach is the encoding and storage of BN-modeled properties within the ontology, facilitating a formal representation of behavioral safety knowledge. Leveraging SWRL rules for reasoning and judgment, our study effectively elucidates causal relationships and interactions within the behavioral safety system. Rigorous verification, including consistency checks and task evaluations, ensures the reliability and validity of our ontology. Ultimately, our framework facilitates seamless communication and retrieval of traditional construction behavioral safety knowledge, underpinning sustainability efforts through the integrated BN model and ontology storage and sharing mechanism.</p></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2090447924002818/pdfft?md5=bfca7b847a07b1bd6478de1426d9b5b6&pid=1-s2.0-S2090447924002818-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141414888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A systematic review of construction labor productivity studies: Clustering and analysis through hierarchical latent dirichlet allocation 建筑业劳动生产率研究的系统回顾:通过分层潜在德里赫利分配进行聚类和分析
IF 6 2区 工程技术
Ain Shams Engineering Journal Pub Date : 2024-06-13 DOI: 10.1016/j.asej.2024.102896
{"title":"A systematic review of construction labor productivity studies: Clustering and analysis through hierarchical latent dirichlet allocation","authors":"","doi":"10.1016/j.asej.2024.102896","DOIUrl":"10.1016/j.asej.2024.102896","url":null,"abstract":"<div><p>The field of construction labor productivity (CLP) has witnessed a remarkable growth in scholarly research, presenting both opportunities and challenges due to the diverse focus and exponential increase in literature. This study aims to systematically review the burgeoning body of CLP literature, proposing an approach to tackle the complexity of the domain. Utilizing the text mining technique of Hierarchical Latent Dirichlet Allocation (HLDA), an automatic clustering method was developed to analyze and categorize the corpus of CLP research. The methodology involved a comprehensive extraction of 591 scholarly articles from scientific databases. These articles, spanning from 1973 to 2023, were subjected to HLDA topic modeling. This process generated a detailed three-layer, tree-like topic model, comprising three primary topics and 26 sub-topics, organized through the nested Chinese restaurant process (nCRP). The study advances theoretical and practical understanding by applying hierarchical topic modeling to construction project management literature and identifying key industry challenges.</p></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2090447924002715/pdfft?md5=95255c8a0259d2cca69eb9c6ef04db71&pid=1-s2.0-S2090447924002715-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141396611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Experimental and numerical assessment of GFRP and synthetic fiber reinforced waste aggregate concrete members GFRP 和合成纤维加固废骨料混凝土构件的实验和数值评估
IF 6 2区 工程技术
Ain Shams Engineering Journal Pub Date : 2024-06-12 DOI: 10.1016/j.asej.2024.102903
{"title":"Experimental and numerical assessment of GFRP and synthetic fiber reinforced waste aggregate concrete members","authors":"","doi":"10.1016/j.asej.2024.102903","DOIUrl":"10.1016/j.asej.2024.102903","url":null,"abstract":"<div><p>Improper disposal of plastic waste (P-waste) poses significant pollution and health risks to the environment. Additionally, steel rebar corrosion in concrete structures reduces their strength and serviceability. To address these issues, this study explores using glass fiber-reinforced polymer (GFRP) rebars and replacing natural coarse aggregates with P-waste aggregates for sustainable and eco-friendly construction. This work investigates the axial performance of polypropylene structural fiber-reinforced P-waste aggregate concrete (SFPC) compressive components having GFRP-reinforcement (GSFPC) under various loading conditions. For comparison, steel-reinforced SFPC compressive components (SSFPC) were also fabricated. Eighteen circular components with 1200 mm height and 300 mm diameter were tested and compared under different loading conditions. SSFPC components exhibited up to 21.9 % higher axial strength but up to 27.4 % lower ductility compared to GSFPC components. Eccentric loading similarly reduced axial strength in both GSFPC and SSFPC components. A 3-D finite element analysis (FEA) of GSFPC components was proposed using a modified damaged plastic model for SFPC which showed deviations of 2.3 % in axial strength and 7.7 % in equivalent axial shortening, demonstrating a good accuracy of the FEA model.</p></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2090447924002788/pdfft?md5=a2320832e44f78d6b137c894869253a1&pid=1-s2.0-S2090447924002788-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141397281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Developing a Neuroarchitecture-based User Centered Design for Elementary Schools in Tehran 为德黑兰小学开发基于神经架构的用户中心设计
IF 6 2区 工程技术
Ain Shams Engineering Journal Pub Date : 2024-06-11 DOI: 10.1016/j.asej.2024.102898
{"title":"Developing a Neuroarchitecture-based User Centered Design for Elementary Schools in Tehran","authors":"","doi":"10.1016/j.asej.2024.102898","DOIUrl":"10.1016/j.asej.2024.102898","url":null,"abstract":"<div><p>Neuroarchitecture research investigates how environmental design affects the nervous system using quantitative methods. However, for user-centered design, qualitative research is equally important to actively involve users in the design process. This research aims to bridge this gap by extracting principles for user-centered design in elementary schools, emphasizing student involvement. The study utilized card-sorting and semi-structured interviews, followed by quantitative content analysis. The research involved 60 girls and 60 boys elementary school students in Tehran. The findings indicate that girl students prefer wood texture and circular forms in colorful environments, while boy students prefer square forms, neutral colors, and spacious areas. Furthermore, the results reveal that essential design elements including <em>window features, compound forms, semi-open spaces, playgrounds, and cleanliness</em>, crucial from students’ perspectives, were overlooked in neuroarchitecture research. This study emphasizes the significance of combining qualitative methods with neuroarchitecture research to develop user-centered school designs that consider students’ preferences and needs.</p></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2090447924002739/pdfft?md5=6a998a037e988e3abff4a14f70b30571&pid=1-s2.0-S2090447924002739-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141403413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Integration of EGs in capacitor added optimal DPS for FG maximization 在电容器中集成 EG,增加最佳 DPS,实现 FG 最大化
IF 6 2区 工程技术
Ain Shams Engineering Journal Pub Date : 2024-06-10 DOI: 10.1016/j.asej.2024.102900
{"title":"Integration of EGs in capacitor added optimal DPS for FG maximization","authors":"","doi":"10.1016/j.asej.2024.102900","DOIUrl":"10.1016/j.asej.2024.102900","url":null,"abstract":"<div><p>High energy loss and lower Node Voltage Profile (NVP) are the two main issues that have to be addressed by the researchers for the past three decades since it involves economic loss for the Distribution Companies. The above two issues can be mitigated by well-renowned techniques such as the Alteration of Topological Structure (ATS) of Distribution Power Systems (DPS), Reactive Power Support (RPS) and integration of Embedded Generations (EGs). This work focuses on separate and combined operation of ATS and RPS under five different scenarios considering three load levels. Additionally, to achieve maximum E<sub>Loss</sub> reduction with Financial Gains (FG) and NVP enhancement, this study adopts allocation of EGs after combined operation of RPS and ATS considering the same three load levels thereby further improvement in efficacy. Moreover, a fast and novel optimization algorithm called Improved (using levy flight) Spotted Hyena Optimizer (ISHO) has been proposed in this work to solve the cost-based objective function. The efficacy of the designed methodology has been validated using 62-node and PG&amp;E 69-node radial DPS. Using combined operation of ATS and RPS, around 48 % and 66 % of E<sub>Loss</sub> reduction has been witnessed for 62-node and PG&amp;E 69-node DPS respectively. More than $90 K has been yielded as FG for both the DPSs. Integration of EGs reduces the E<sub>Loss</sub> further by around 29 %. Maximum FG of $5.1 lakhs and $2.9 lakhs has been obtained by EG integration for 62-node and PG&amp;E 69-bus DPS respectively. The outcome reveals that the performance of the developed methodology effectively achieves more E<sub>Loss</sub> reduction and FG for all the cases.</p></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2090447924002752/pdfft?md5=1fbf6c47d052472fb4b0a33b164f3e79&pid=1-s2.0-S2090447924002752-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141393031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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