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273 articles for “deviation”
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Implementation of Real Time Pricing in Deregulated Power Sector
Abstract: This paper proposes an approach for implementation of Real Time Pricing in deregulated power sector. In this paper, combined model consisting of the pool, bilateral and multilateral transaction of deregulated power sector has been considered. In deregulated power sector, power schedule is decided 24 h ahead of real market but some of the market participants are diverted from their commitments regarding either supply of scheduled generation or withdrawal of scheduled …
Published in Journal of Power Electronics and Power Systems · Vol. 4, Issue 1, 2014 · pp. 25–36 Read article
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Design of Active Power Based Relay Algorithm to Overcome Transient Instability: 220 kV Amravati Substation Case Study
Abstract: This paper presents a new protective scheme, i.e. new relay algorithm to protect small scale generators against transient instability. The demand of installing small generators in distribution networks has been increased now-a-days. Small scale generators have low inertia constant. The inertia constant minimizes the frequency deviation which depends on the kinetic energy. Therefore frequency dynamics becomes slower and hence it increases the response time to react to fault events. Due …
Published in Journal of Power Electronics and Power Systems · Vol. 6, Issue 2, 2016 · pp. 64–73 Read article
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Frequency Regulation in Two Area System with PSO Driven PID Technique
Abstract: Now a modern days power system structures gives a major advantages in applications at the time, losses are also produced. To get the stable operation of this structured power system need balancing between total generation with total load demand and system losses. Rising and falling load demand throws off the real and reactive power balances. As a result, the system frequency and tie line interchange power deviate from their pre-programmed …
Published in Journal of Power Electronics and Power Systems · Vol. 12, Issue 2, 2022 · pp. 8–20 Read article
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Biopolymer Substitution and Impact on Cuttings Transport of a Lightweight Water-Based Drilling Fluid
Abstract: The aim is to determine the impact of substitution of a local material for another, on rheological properties and hole cleaning capability. A local biopolymer Mucuna solannie was used as a substitute for another biopolymer, Detarium microcarpum, primarily as a viscosifier in a water-based drilling fluid. Tests were carried out using standard equipment and specifications. Variations in transport efficiency and required minimum fluid flow rate at same cuttings concentration (CC) …
Published in Journal of Petroleum Engineering & Technology · Vol. 7, Issue 2, 2017 · pp. 54–64 Read article
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Computational Fluid Dynamics Simulations of Horizontal Wellbore Cleaning and Cement Placement Processes in Drilling and Completions Engineering Applications
Abstract: Mathematical modeling and simulations of complex coupled processes require both robust and accurate physics-based techniques. Computational fluid dynamics (CFD) have been used extensively in a wide range of fields such as aerospace, automotive, and chemical processing industries to name a few. Typically, processes during drilling and completion of wells involve modeling of complex rheology fluids, turbulence modeling, multiphase phenomena, and heat transfer. Each individual process could possibly result in a …
Published in Journal of Petroleum Engineering & Technology · Vol. 2, Issue 1-3, 2012 · pp. 26–39 Read article
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Predictability of Equation of State (EoS)-based Gas Hydrate Models for Single and Binary Gas Mixtures
Abstract: The better models are necessary to design and understand the phase behavior of produced trapped natural gas from natural gas hydrates from subsea environments. Most of the models available in an open literature are primarily applicable at relatively low pressure condition thus making their use very limited for gas hydrate reservoir modeling. In order to produce methane from these gas hydrates, it is important to understand the phase behavior through …
Published in Journal of Petroleum Engineering & Technology · Vol. 2, Issue 1-3, 2012 · pp. 83–91 Read article
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Water/Oil Cresting Optimization in Horizontal Wells: Experimental Study
Abstract: In recent years, the application of horizontal wells has been predominant and successful in minimizing cresting scenarios due to significant reservoir exposure of its laterals. Cresting is a natural phenomenon known to occur when an imbalance of viscous and gravitational forces exists in a reservoir. This study experimentally investigates the effect of varying the inclined section of the horizontal well using a simple, practical and inexpensive cresting optimization technique. The …
Published in Journal of Petroleum Engineering & Technology · Vol. 10, Issue 3, 2020 · pp. 35–46 Read article
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Evaluation of Industry 4.0 Adoption Obstacles Through the Use of SMEs
Abstract: Industry 4.0 offers significant technology advancements, but businesses must overcome several obstacles before implementing it. Although a lot of work has gone into identifying the hurdles that most businesses face, the literature currently in publication has not taken the time to examine how these barriers relate to one another or what that means for practitioners. Within the framework of Portugal's manufacturing sector, we employ the interpretative structural modelling (ISM) technique …
Published in Journal of Production Research & Management · Vol. 13, Issue 3, 2023 · pp. 24–38 Read article
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Behaviour of Three Legged 400 kV Double Circuit Steel Transmission Line Tower by Using Different Diaphragm Comparative Study
Abstract: Power is a vital solution for the growth of any country’s economy. India has the third largest producer of power in the world. As per the Census and Economic Information report, India has 1,06,991 GWh power capacity up to Mar. 2019. So, optimizations of transmission line towers are vital to reduce the cost the power sector and it’s depending on various factors, i.e. materials, size and shape of the section, …
Published in Journal of Structural Engineering and Management · Vol. 6, Issue 3, 2019 · pp. 20–31 Read article
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Experimentally New Technique System to Measure Contact Angle of Metal/Melt System in Simple Way
Abstract: In this research, easy and new technique system to measure contact angle of metals/metals systemwas introduced. The new technique system used a simple component in direct procedure to foundcontact angle of solder on metals substrate in wide range of drops volumes. Solder was applied intoaluminum and copper substrate metals using control heating temperature of the substrate. Then, theresults were analyzed by image J program to know the accuracy of the …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 8, Issue 1, 2021 · pp. 38–43 Read article
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A Review on Mechanization of Process Planning for Automated Fiber Placement
Abstract: Process planning is a crucial phase of the Automatic Fiber Placement (AFP) workflow. It creates valuable and effective system processes centered on working material, composite architecture and manufacturing tools. The existing state of process planning needs a large degree of involvement from the process manager and may benefit significantly from improved automation. A collection of main stages and roles is then drawn up to define the most complex and time-consuming …
Published in Journal of VLSI Design Tools and Technology · Vol. 10, Issue 3, 2020 · pp. 9–15 Read article
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Analysis of Rainfall Variability in Sylhet Region of Bangladesh
Abstract: The variability and distributions of rainfall of a region is important and useful especially for agricultural activities. The study was conducted to establish the rainfall trends in Sylhet by analyzing available rainfall record for 35 years period of 1981 to 2015. Records of daily rainfall data for Sylhet region were obtained from the Bangladesh Meterological Department (BMD) for analysis. Rainfall data were categorized into monthly, annual, and seasonal basis. The …
Published in Journal of Water Resource Engineering and Management · Vol. 6, Issue 2, 2019 · pp. 1–10 Read article
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Effect of Earthquake on Embankment based on Reliability Index Using Spreadsheet Optimization Method
Abstract: To obtain varying parametric sensitivities from case to case, a reliability analysis is most efficient method for designing any structure. Reliability based design illustrates the standard deviations and the correlation structure of the input parameters. The aim of this paper is to delineate the ultimate limit states or reliability based assessment and to describe the reliability index or Hasofer-Lind (H-L) index using object-oriented constrained optimization in the ubiquitous spread sheet …
Published in Journal of Water Resource Engineering and Management · Vol. 4, Issue 1, 2017 · pp. 35–41 Read article
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Blind Image Quality Assessment using NSS Approach in the DCT Domain
Abstract: We have develop an efficient model for improving image quality using IQA and NSS based on blind image Quality Assessment.This algorithm does computation for the parameters which user expect at output. The certain extracted features approach depends on a simple Bayesian inference model to dipict image quality scores. The project features are based on statistic scenes of discrete cosine transform for images. The resultant parameters of the model are used …
Published in Recent Trends in Electronics Communication Systems · Vol. 8, Issue 3, 2021 · pp. 1–6 Read article
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Design and Performance Investigation with Erbium-Ytterbium Co- Doped Fiber Amplifier Link
Abstract: AbstractLight wave propagation through optical fiber suffers from numerous linear and nonlinear effects. To compensate it techniques have been adopted. Amongst optical fiber amplifiers doped with ions are one of the key tools to enhance spectral efficiency further. In this vision, an optical design with EDFA and Erbium ytterbium co-doped fiber amplifier is presented for the single channel. The design’s performance has been investigated for numerous optical parameters for instance …
Published in Recent Trends in Sensor Research & Technology · Vol. 4, Issue 2, 2017 · pp. 6–13 Read article
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Synchronizing Quality Analysis of HVAC-HVDC Parallal Tie-Line for Synchronization of Hydro, Thermal and Nuclear Power Grid
Abstract: This research work prove the synchronizing quality of HVAC-HVDC parallel tie-line is different in Hydro, Thermal and Nuclear Power Grid. The synchronizing quality of HVAC-HVDC parallel tie-line is superior in Thermal Power Grid as compare to the Hydro & Nuclear Power Grid. This project work is also proves the synchronizing quality of HVAC-HVDC parallel tie-line is superior in Nuclear Power Grid as compare to the Hydro Power Grid. The synchronizing …
Published in Trends in Electrical Engineering · Vol. 8, Issue 1, 2018 · pp. 48–58 Read article
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Penalization for Unscheduled Interchange based on Availability Based Tariff in Competitive Electricity Market
Abstract: This paper presents a technique for the penalization of unscheduled interchange within deregulated power sector, it derives its features from a successful frequency linked tariff scheme operational in India and known by the name of Availability Based Tariff (ABT). In this paper, combined model consisting of the pool, bilateral and multilateral transaction of deregulated power sector has been considered, the power market is mostly scheduled for 15 min, one or …
Published in Trends in Electrical Engineering · Vol. 3, Issue 3, 2013 · pp. 51–61 Read article
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Estimation of Power System Stabilizer Parameters Using Swarm Intelligence Techniques to Improve Small Signal Stability of Power System
Abstract: Interconnection of the power system utilities and grids presents a formidable challenge in front of design engineers. With the interconnections, power system has emerged as a more complex and nonlinear system. In recent years, small signal stability issues have gained much importance along with the conventional transient stability issues. Transient stability of the power system can be achieved with high gain and fast acting automatic voltage regulators (AVRs). However, AVRs …
Published in Trends in Electrical Engineering · Vol. 6, Issue 2, 2016 · pp. 16–25 Read article
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Basic Re-procurement Considerations Influencing Highway Projects in Nigeria
Abstract: Failures in road construction project procurement are attributed to the existence of many factors right from the inception. Such factors include costs, technical capabilities, qualities, sub-contractors, resources, risk events, among others. These factors have direct consequence on the funding, the estimated time of the project completion and may result in outright termination of the project. In order to meet targeted project goals, project client seeks alternative measures of reviving the …
Published in Trends in Transport Engineering and Applications · Vol. 2, Issue 3, 2015 · pp. 1–11 Read article
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Benchmarking Cost Overruns in Transportation Infrastructure Investments
Abstract: Highway projects have historically experienced significant cost overruns, with front end implications for the sustainability of transportation investments. However, the criteria for assessing cost overruns continues to elicit diverse opinions and has become a debatable issue in the literature. Some studies allude to detailed design stage estimates, while others tag conceptual stage estimates, as the ideal benchmark for quantifying the project cost deviations. A survey of the literature, principally from …
Published in Trends in Transport Engineering and Applications · Vol. 7, Issue 2, 2020 · pp. 29–37 Read article