Development of Mathematical Model for Predicting the Efficiency of Oil-water Separation | Chapter 3 | Contemporary Perspective on Science, Technology and Research Vol. 8

Petroleum is vital to many industries and in the manufacture of a wide variety of materials. It also accounts for a large percentage of the world’s energy needs and thus it is a critical concern for many nations.

 

The study anchors on developing a mechanistic model for oil- water separation. Over the years, researchers have been working on how to improve the quality of produced water effluent, especially from oil and gas operations sent to the receiving waters. Despite the standard set for compliance by regulatory bodies like united nation agency, ministry, departments and other agencies both state and federal government including non-governmental agencies the problem of meeting stipulated benchmarks still persist. This study however looks into some variables perceived as being relative to improving or affecting produced water effluent from oil-water separator. Modelling of oil-water separation was based on the philosophy that a mathematical model can be established for the physical problems under investigation. These mathematical problems formulated were based on laws of conservation. The model under study, where the total mass and energy cannot be generated neither do they disappear, so that mass balance would give an ordinary differential equation. Solving the model equation analytically however, poses some problems. Hence they were solved by simulation using the computer software SIMULINK a graphical extension of MATLAB with positive outcomes since it can model non-linear systems. From the simulated analysis, increased flow rate creates turbulence in the system with resultant poor effluent quality. Whereas from the simulated analysis, gradual temperature increases improve oil- water separation from lower temperature of the fluid upstream thereby aiding improvement in effluent quality.

Author(s) Details:

Emmanuel Ewa Ekeng,
Department of Civil Engineering, University of Nigeria, Nsukka, Enugu State, Nigeria.

Jonah Chukwuemeka Agunwamba,
Department of Civil Engineering, University of Nigeria, Nsukka, Enugu State, Nigeria.

Please see the link here: https://stm.bookpi.org/CPSTR-V8/article/view/14050

Double Star Induction Machine (DSIM) Operation without ADRC-controlled Current and Speed Sensors | Chapter 7 | Research Highlights in Mathematics and Computer Science Vol. 6

 The present study debated about an operation of the double start initiation machine (DSIM) outside current and speed sensors controlled by alive disturbance refusal control (ADRC). The main inspiration behind this work is to weaken the cost of the installation, reduce the wiring and the movement of maintenance, and growing reliability. Without current and speed sensors, the system can be conducted in an economical and easy manner. The main benefits concerning this approach are the strength to reconstruct the stages of the stator current and the rotor speed using just individual DC voltage. The projected model uses a technique of guess and reconstitution of stator current and rotor speed from a alone DC voltage sensor. Following the use of two voltages, spectators are used to calculate the rotor and stator speeds. Under miscellaneous simulation sketches, this method's conduct and productiveness are validated in MATLAB/Simulink. The imitation results demonstrate this form's ability to produce results that equate DSIM when using current and speed sensors.

Author(s) Details:

Aichetoune Oumar,
Department of Physics, Faculty of Sciences and Technology, University of Nouakchott Al Aasriya, Nouakchott, Mauritania.

Yarba Ahmed,
Department of Physics, Faculty of Sciences and Technology, University of Nouakchott Al Aasriya, Nouakchott, Mauritania.

Mohamed Cherkaoui,
Department of Electrical Engineering, Mohammadia School of Engineering (EMI), University Mohammed V in Rabat, Rabat, Morocco.

Please see the link here: https://stm.bookpi.org/RHMCS-V6/article/view/9799

Double Star Induction Machine (DSIM) Operation without ADRC-controlled Current and Speed Sensors | Chapter 7 | Research Highlights in Mathematics and Computer Science Vol. 6

 The present study explained about an operation of the double start initiation machine (DSIM) outside current and speed sensors controlled by alive disturbance denial control (ADRC). The main inspiration behind this work is to humble the cost of the installation, facilitate the wiring and the movement of maintenance, and growing reliability. Without current and speed sensors, the apparatus can be conducted in an economical and honest manner. The main benefits concerning this approach are the talent to reconstruct the states of the stator current and the rotor speed using just individual DC voltage. The projected model uses a technique of belief and reconstitution of stator current and rotor speed from a sole DC voltage sensor. Following the use of two voltages, spectators are used to calculate the rotor and stator speeds. Under miscellaneous simulation sketches, this method's efficiency and productiveness are validated in MATLAB/Simulink. The imitation results demonstrate this system's ability to produce results that equate DSIM when using current and speed sensors.

Author(s) Details:

Aichetoune Oumar,
Department of Physics, Faculty of Sciences and Technology, University of Nouakchott Al Aasriya, Nouakchott, Mauritania.

Yarba Ahmed,
Department of Physics, Faculty of Sciences and Technology, University of Nouakchott Al Aasriya, Nouakchott, Mauritania.

Mohamed Cherkaoui,
Department of Electrical Engineering, Mohammadia School of Engineering (EMI), University Mohammed V in Rabat, Rabat, Morocco.

Please see the link here: https://stm.bookpi.org/RHMCS-V6/article/view/9799

Optimal R-SFCL Location in Power Grid | Chapter 4 | Techniques and Innovation in Engineering Research Vol. 9

 Increased demand of capacity generation ability in distributed energetic power wholes has led to an increase in fault current levels surpassing the maximum  designed avoid ratings of the switchgear. In addition an unbalance in service level is also noticed during blame owing to the unification of AC and DC micro grids consisting of wind and photovoltaic farms. Resistive type Superconducting Fault Current Limiter (R-SFCL) maybe the best answer to suppress the overdone fault current questions and also to decrease voltage imbalance by improving the rise rate of the temporary recovery voltage in Smart grids. However, new concern in such uses is about the optimum locale of R-SFCL. In this work, we have modeled a HTS located R-SFCL using E-J traits of the superconductor and implemented it at differing key locations in a smart gridiron. A Graphical User Interface (GUI) of MATLAB is developed to evaluate the influence of the proposed system on an IEEE benchmarked four-machine two-district test system. Three chapter faults of various ratings are studied accompanying and without SFCL at various indispensable content of the smart grid, listening the power flows. Such studies on best location of SFCL are main to maximize the influence of fault alleviation in an extended network of Power Grid.

Author(s) Details:

Abhay Singh Gour,
Cryogenic Engineering Centre, Indian Institute of Technology, Kharagpur-721302, West Bengal, India.

Please see the link here: https://stm.bookpi.org/TAIER-V9/article/view/9986

An Innovative Fuzzy Rule Based Control Analysis of Advanced Unified Power Flow Controller | Chapter 9 | New Approaches in Engineering Research Vol. 1

 The rapid development of high power semiconductor devices with fast control features has enabled more efficient and effective power flow control. This category's Flexible AC Transmission Systems (FACTS) introduces several novel operating control devices. The Advanced Unified Power Flow Controller (AUPFC), also known as multi-converter UPFC or Generalized-UPFC, is a recent device that can control the bus voltage and power flows, both real and reactive, of multiple lines or even a sub-network. This chapter describes a novel real-time approach for analyzing the Advanced Unified Power Flow Controller. Based on the analysis, a new fuzzy logic rules-based controller that improves system performance has been proposed. The controller rules are built around the relationship between the series inserted voltages in multi-line and the desired changes in real/reactive power flows in the power system. The effects of various controllers, as well as the parameters of series transformers and transmission lines, were investigated using SIMULINK control block models. A case study demonstrates the effectiveness of the proposed scheme.

Author (S) Details

Prof. S. K. Srivastava
Department of Electrical Engineering, MMM University of Technology College, Gorakhpur, India.

View Book :- https://stm.bookpi.org/NAER-V1/article/view/1915