WSEAS Transactions on Power Systems最新文献_第10页

An Assessment Framework for PV Parallel MPPT Configuration with a New Utilization for UIPS Loads 光伏并联MPPT配置的评估框架与upps负载的新利用

WSEAS Transactions on Power Systems Pub Date : 2022-01-05 DOI: 10.37394/232016.2022.17.2

M. El-sayed, A. Huzayyin, A. Mahgoub, E. Abulzahab

{"title":"An Assessment Framework for PV Parallel MPPT Configuration with a New Utilization for UIPS Loads","authors":"M. El-sayed, A. Huzayyin, A. Mahgoub, E. Abulzahab","doi":"10.37394/232016.2022.17.2","DOIUrl":"https://doi.org/10.37394/232016.2022.17.2","url":null,"abstract":"The prevalence rate of photovoltaics (PV)-based generation systems has increased by more than 15 folds in the last decade, putting it on the top compared to any other power generation system from the expandability point of view. A portion of this huge expansion serves to energize standalone remote areas. Seeking improvements from different aspects of PV systems has been the focus of many studies. In the track of these improvements, parallel MPPT configuration for PV standalone systems have been introduced in the literature as an alternative to a series configuration to improve the overall efficiency of standalone PV systems. However, this efficiency improvement of the parallel MPPT configuration over the series one is not valid for any standalone application, therefore an assessment procedure is required to determine the most efficient MPPT configuration for different standalone applications. Therefore, in this study, an assessment procedure of parallel MPPT is conducted to demonstrate the suitability of utilizing such a configuration compared to series one, based on load daytime energy contributions. This assessment will help PV system designers to determine which MPPT configuration should be selected for applications under study. Furthermore, a new utilization of parallel MPPT configuration is introduced for operating universal input power supply (UIPS) loads to eliminate the inverter stage, thereby increasing the overall system efficiency and reliability. Finally, a systematic procedure to size the complete system is introduced and reinforced by a sizing example.","PeriodicalId":38993,"journal":{"name":"WSEAS Transactions on Power Systems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48824416","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

Mathematical Modeling of Knowledge-Intensive Products Export Energy Costs 知识密集型产品出口能源成本的数学模型

WSEAS Transactions on Power Systems Pub Date : 2022-01-05 DOI: 10.37394/232016.2022.17.1

V. Veretekhina Svetlana

{"title":"Mathematical Modeling of Knowledge-Intensive Products Export Energy Costs","authors":"V. Veretekhina Svetlana","doi":"10.37394/232016.2022.17.1","DOIUrl":"https://doi.org/10.37394/232016.2022.17.1","url":null,"abstract":"This article presents the mathematical modeling of export energy costs. The knowledge-intensive products export energy costs are a set of financial, material, labor costs and resources consumption. Export costs are a multilevel system of indicators. The author sets out the order of mathematical modeling. At the first stage, the main trends in reducing export energy costs are identified. A set of integrated logistics support measures is modeled. The modeling of knowledge-intensive products export energy costs is a system of technical and economic indices and a cost value dependance: Maintenance and Repair, Material and Technical Maintenance, Business Model of After-Sales Service, Formation of the Cost of Insurance and Investment Management Strategy. Formulas, practical calculation examples and graphs are presented. The Ishikawa systematic analysis method is used to visualize data and dependence relations. The author's mathematical modeling of knowledge-intensive products export costs includes the calculation of integrated logistic support costs. Exporting countries require a high level of technical products efficiency. It has been established that \"the more complex a knowledge-intensive products is, the higher the reliability of systems is\". Reliability indices are basic. The author's scientific study confirms a hypothesis of the knowledge-intensive products export feasibility only with high reliability and efficiency factors. The author developed a set of integrated logistical support measures for knowledge-intensive products.","PeriodicalId":38993,"journal":{"name":"WSEAS Transactions on Power Systems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44529817","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

Polar Coordinates based N-R Method for Load Modelling in Electrical Power Distribution Systems 基于极坐标的配电系统负荷建模N-R方法

WSEAS Transactions on Power Systems Pub Date : 2021-12-31 DOI: 10.37394/232016.2021.16.35

S. Venkatasivanagaraju, M. Rao

{"title":"Polar Coordinates based N-R Method for Load Modelling in Electrical Power Distribution Systems","authors":"S. Venkatasivanagaraju, M. Rao","doi":"10.37394/232016.2021.16.35","DOIUrl":"https://doi.org/10.37394/232016.2021.16.35","url":null,"abstract":"In this paper, load modelling has been done in electrical distribution system using local real time test data. This distribution system supplies base loads, residential, industrial, commercial and composite loads. Using power and current-mismatch functions in polar form, a comprehensive framework for applying the Newton–Raphson method to solve power flow problems is presented. The Newton–Raphson approach for solving power flow problems can be applied in six different ways using these two mismatch functions. For load (PQ)buses and generator (PV) buses, we propose a theoretical framework for analyzing these versions. In addition, we compare newly created versions of the Newton power flow method to current variants in this study. Numerical studies on distribution networks are used to study the convergence behavior of all approaches. The measurements are formed for short term load forecasting with different types of realistic loads such as base loads, residential, industrial, commercial and composite loads. The long-term load forecasting and their losses also has been performed along with short term load forecasting. The results are obtained and validated through MATLAB.","PeriodicalId":38993,"journal":{"name":"WSEAS Transactions on Power Systems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45279370","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

Personified Behavioural Demand Response Model for the Reduction of Peak Time Energy Consumption Coincidence of Domestic Sector with the Utility 减少家庭部门与公用事业单位高峰时段能源消耗重合的人格化行为需求响应模型

WSEAS Transactions on Power Systems Pub Date : 2021-12-31 DOI: 10.37394/232016.2021.16.36

G. Swathi, S. Donepudi, K. R. Kumar

{"title":"Personified Behavioural Demand Response Model for the Reduction of Peak Time Energy Consumption Coincidence of Domestic Sector with the Utility","authors":"G. Swathi, S. Donepudi, K. R. Kumar","doi":"10.37394/232016.2021.16.36","DOIUrl":"https://doi.org/10.37394/232016.2021.16.36","url":null,"abstract":"Curtailment of discrete customer’s demand coincidence with utility demand during peak time ends up in good benefits to the utility at different levels as this coincidence is very expensive due to additional requirement of demand. Though few Demand Response(DR) programs are working towards this peak time energy coincidence reduction, they are not that successful due to either requirements of technological installations near customer premises or penalising the customer or lack of encouraging the customer to achieve the reduction. This work proposes a Personified Behavioural Demand Response (P-BDR) model especially for residential customers as they are good contributors of peak time demand. Rather than coaxing or compelling the customer, the proposed model relies on customer’s motivation regarding the peak time energy conservation, setting targets based on their monthly contribution to utility peak time demand and measuring their achievements through feedback models. P-BDR model comprises of Target/Goal setting model based on forecasted data and feedback model based on real time data of individual customer. This model is observed on synthetic smart meter data of 20 discrete domestic customers. For the better application of the model, customers are clustered into 4 categories using K-Means Machine learning algorithm. The model sets an individual target of 5%-15% energy consumption reduction during utility peak time based on the customer classification. The model achieves an overall consumption reduction of 14.9% during peak time with the proposed model.","PeriodicalId":38993,"journal":{"name":"WSEAS Transactions on Power Systems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46035452","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: 1

Enhancing the Performance of Reverse Power Relay for Generator Protection 提高发电机反功率继电器的保护性能

WSEAS Transactions on Power Systems Pub Date : 2021-12-28 DOI: 10.37394/232016.2021.16.33

D. Mishra, RUDRANARAYAN SENAPATI, S. Patra, B. Mishra

{"title":"Enhancing the Performance of Reverse Power Relay for Generator Protection","authors":"D. Mishra, RUDRANARAYAN SENAPATI, S. Patra, B. Mishra","doi":"10.37394/232016.2021.16.33","DOIUrl":"https://doi.org/10.37394/232016.2021.16.33","url":null,"abstract":"The generator is the most important component in energy generation, and it needs to be protected from both internal and external disturbance. Reverse power relays (RPR), with the directional relay being the most commonly utilized as the principal safeguard, are used to trip the turbine generators to minimize the damage of prime mover. Modeling tools are helpful for learning the basics of a power system, especially for newbie engineers. These tools assist novice engineers in modulating the system in both normal and abnormal situations. This paper demonstrates how to model and simulate a digital RPR on MATLAB. Different conversions of data processes involved in signal digitization are also explored. Electromechanical relays were previously popular, but fast and very accurate digital relays have now surpassed them. Fast relay functioning is recommended, especially in the case of system faults that might cause a blackout. Digital relays provide a number of advantages, including several changeable settings and a small size. The performance of test relay in this article is tested by connecting a synchronous generator of 11kV to 220kV via a step-up transformer.","PeriodicalId":38993,"journal":{"name":"WSEAS Transactions on Power Systems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69930623","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: 2

A Discrimination Method Between Transformer Inrush and Fault Current Based on Chromatic Monitoring 基于色度监测的变压器涌流与故障电流判别方法

WSEAS Transactions on Power Systems Pub Date : 2021-12-23 DOI: 10.37394/232016.2021.16.31

Z. Almajali

引用次数: 0

Management of a Dual-Bus AC+DC Microgrid Based on a Wind Turbine with Double Stator Induction Generator 基于双定子异步发电机风力发电机的双母线交流+直流微电网的管理

WSEAS Transactions on Power Systems Pub Date : 2021-12-22 DOI: 10.37394/232016.2021.16.30

M. Cendoya, J. I. Talpone, P. Puleston, J. A. Barrado-Rodrigo, L. Martínez-Salamero, P. Battaiotto

{"title":"Management of a Dual-Bus AC+DC Microgrid Based on a Wind Turbine with Double Stator Induction Generator","authors":"M. Cendoya, J. I. Talpone, P. Puleston, J. A. Barrado-Rodrigo, L. Martínez-Salamero, P. Battaiotto","doi":"10.37394/232016.2021.16.30","DOIUrl":"https://doi.org/10.37394/232016.2021.16.30","url":null,"abstract":"The topology and management of a sustainable dual-bus, AC and DC, microgrid designed to operate connected to a weak grid is presented. AC+DC hybrid microgrids are a robust and cost-competitive solution for poorly connected areas, as can be found in rural or island electrification. The versatile microgrid proposed in this work is developed around a wind turbine based on a particular induction generator with double stator winding and squirrel cage rotor (DWIG). This singular generator is especially suitable for a combined AC+DC coupled microgrid application. One of its stator windings is coupled to the DC bus via a controlled AC/DC converter. The other is directly connected to the AC bus, only during the periods of abundant wind resource. The DWIG is complemented with photovoltaic panels and a hybrid energy storage system, comprising flow batteries assisted by supercapacitors, which converge to the DC Bus. The DC bus exchanges power with the AC bus through an interlinking inverter. The article describes the topology and details the operation of its Supervisory Control system, which gives rise to the five operating modes of the proposed AC+DC DWIG based microgrid. Its performance under different generation conditions and load regimes is thoroughly assessed by simulation.","PeriodicalId":38993,"journal":{"name":"WSEAS Transactions on Power Systems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49280780","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

Comparative Analysis of Motorcyclists’ Gaze Behavior in Different Road Environments 不同道路环境下摩托车驾驶员凝视行为的比较分析

WSEAS Transactions on Power Systems Pub Date : 2021-11-22 DOI: 10.37394/232016.2021.16.29

P. Lemonakis, Eleni Misokefalou, N. Eliou, Myrofora Koroni

{"title":"Comparative Analysis of Motorcyclists’ Gaze Behavior in Different Road Environments","authors":"P. Lemonakis, Eleni Misokefalou, N. Eliou, Myrofora Koroni","doi":"10.37394/232016.2021.16.29","DOIUrl":"https://doi.org/10.37394/232016.2021.16.29","url":null,"abstract":"While car drivers consist the vast majority of road users, motorcycle drivers are considered among the most vulnerable ones with significant participation in accidents. The present study investigates the role of elements that permanently exist in the road environment and affect motorcyclist’s behavior since their usefulness requires visual contact between them and the rider during a certain period of time. Therefore, on such an occasion the riders do not monitor the road ahead which is considered as a fundamental driving task and hence the visual search and scan is not directed to the frontal view. The main objective of this paper is to identify and evaluate certain aspects of motorcyclists’ behavior influenced by exterior factors, such as observation of vertical signage or advertisement signs, by using naturalistic data. Motorcyclist’s visual behavior is evaluated via a continuous recording of his gaze, which acts as the main indicator regarding the rider’s performance, with the use of special equipment under naturalistic riding conditions. The selection of a naturalistic method permits continuous data recording, producing real-time data. Thus, the results are reliable and valid to the maximum possible extent. This research is based on a medium-scale experimental procedure that took place in three different road sections in Western Greece. A number of 11 motorcyclists participated in the study. The present research may be used as a tool to improve road infrastructure and to identify attitudes that pose a risk to rider’s safety aiming to the creation of a safer road environment, which will lead to less fatal and serious accidents.","PeriodicalId":38993,"journal":{"name":"WSEAS Transactions on Power Systems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42340981","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

Performance of Neutral Point Clamped Five Level Inverter Using Space Vector Modulation Control Fed by DPC-VF-SVM Rectifier DPC-VF-SVM整流器空间矢量调制控制中性点箝位五电平逆变器的性能

WSEAS Transactions on Power Systems Pub Date : 2021-11-20 DOI: 10.37394/232016.2021.16.28

D. Cherifi, Y. Miloud, M. Mostefai

引用次数: 3

A Hybrid-Mode LDO Regulator with Fast Transient Response Performance for IoT applications 物联网应用中具有快速瞬态响应性能的混合模式LDO稳压器

WSEAS Transactions on Power Systems Pub Date : 2021-11-18 DOI: 10.37394/232016.2021.16.27

Said EL Mouzouade, Karim El khadiri, Z. Lakhliai, D. Chenouni, A. Tahiri

引用次数: 3