scholarly journals Power Maximization and Turbulence Intensity Management through Axial Induction-Based Optimization and Efficient Static Turbine Deployment

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4943
Author(s):  
Mfon Charles ◽  
David T. O. Oyedokun ◽  
Mqhele Dlodlo

Layout optimization is capable of increasing turbine density and reducing wake effects in wind plants. However, such optimized layouts do not guarantee fixed T-2-T distances in any direction and would be disadvantageous if reduction in computational costs due to turbine set-point updates is also a priority. Regular turbine layouts are considered basic because turbine coordinates can be determined intuitively without the application of any optimization algorithms. However, such layouts can be used to intentionally create directions of large T-2-T distances, hence, achieve the gains of standard/non-optimized operations in these directions, while also having close T-2-T distances in other directions from which the gains of optimized operations can be enjoyed. In this study, a regular hexagonal turbine layout is used to deploy turbines within a fixed area dimension, and a turbulence intensity-constrained axial induction-based plant-wide optimization is carried out using particle swarm, artificial bee colony, and differential evolution optimization techniques. Optimized plant power for three close turbine deployments (4D, 5D, and 6D) are compared to a non-optimized 7D deployment using three mean wind inflows. Results suggest that a plant power increase of up to 37% is possible with a 4D deployment, with this increment decreasing as deployment distance increases and as mean wind inflow increases.

2020 ◽  
Vol 19 (02) ◽  
pp. 561-600
Author(s):  
Selcuk Aslan

The digital age has added a new term to the literature of information and computer sciences called as the big data in recent years. Because of the individual properties of the newly introduced term, the definitions of the data-intensive problems including optimization problems have been substantially changed and investigations about the solving capabilities of the existing techniques and then developing their specialized variants for big data optimizations have become important research topic. Artificial Bee Colony (ABC) algorithm inspired by the clever foraging characteristics of the real honey bees is one of the most successful swarm intelligence-based metaheuristics. In this study, a new ABC algorithm-based technique that is named source-linked ABC (slinkABC) was proposed by considering the properties of the optimization problems related with the big data. The slinkABC algorithm was tested on the big data optimization problems presented at the Congress on Evolutionary Computation (CEC) 2015 Big Data Optimization Competition. The results obtained from the experimental studies were compared with the different variants of the ABC algorithm including gbest-guided ABC (GABC), ABC/best/1, ABC/best/2, crossover ABC (CABC), converge-onlookers ABC (COABC), quick ABC (qABC) and modified gbest-guided ABC (MGABC) algorithms. In addition to these, the results of the proposed ABC algorithm were also compared with the results of the Differential Evolution (DE) algorithm, Genetic algorithm (GA), Firefly algorithm (FA), Phase-Based Optimization (PBO) algorithm and Particle Swarm Optimization (PSO) algorithm-based approaches. From the experimental studies, it was understood that the ABC algorithm modified by considering the unique properties of the big data optimization problems as in the slinkABC produces better solutions for most of the tested instances compared to the mentioned optimization techniques.


2019 ◽  
Vol 29 (04) ◽  
pp. 2050063
Author(s):  
C. Jeyanthi ◽  
H. Habeebullah Sait ◽  
K. Chandrasekaran ◽  
C. Christopher Columbus

The natural calamity and physical malfunction in the overhead transmission line cause bad impact on the networks such as mechanical failures, power losses, reduction of line capacity, and voltage drop. These adverse impacts can be reduced by implementing proper monitoring systems. Wireless sensor network is an apt mechanism to monitor the overhead transmission network because of its physical configuration. This paper portrays the communication between wireless sensor networks and central data processing station. Cellular communication can directly transmit information through an assisted cellular module (CM) based on the probability of cellular coverage. In this paper, one of the modern optimization techniques, i.e., artificial bee colony algorithm, is used to study the problem of CM placement of cellular communication. By using this algorithm, the optimal number and location of the CMs for a test system varied from 10 to 100 are determined. A novel optimal link path scheme is proposed to check the condition of the required quality of services of both cellular/ZigBee users. The attained results show that the methodology is best suited to acquire low cost solution for the cellular module placement problem.


2019 ◽  
Vol 28 (04) ◽  
pp. 1950070
Author(s):  
Javad Salehi ◽  
Arman Amini Badr

This paper addresses modeling, stability analysis and control of the doubly fed induction generator (DFIG) for wind turbines (WTs). In the present work, imperialist competitive and artificial bee colony algorithms are used for optimizing parameters of controllers of a WT with DFIG. Algorithms for optimizing the controllers’ parameters are described. Based on this, an eigenvalue-based objective function is utilized to optimize the parameters. To evaluate the optimized gains, simulations are performed on a single machine-infinite bus system, and the dynamic responses of system with parameters obtained from two optimization techniques are compared.


This work deals with Fractional Order Proportional-Integral-Derivative (FOPID) based controllers designing using Bio-inspired Artificial Bee Colony (ABC) algorithm. The operating principle of bio-inspired optimization techniques are originated from various biological systems. Thus, ABC algorithm works similar to working principle of bees. In this work, second order system model of a DC motor has been considered for speed control of DC motor. The proposed optimization method can be used for higher order approaches, to provide minimum error with efficient system performance. The aim of this research work is to design and tune parameters of FOPID controller, for effective static and dynamic performance. The automatic controller tunning ability for PID is possible using ABC algorithm and fractional order system provides effective solution set for search output parameters of PID.


2019 ◽  
Vol 5 (1) ◽  
Author(s):  
I Made Widiartha ◽  
Ngurah Agus Sanjaya ER ◽  
I Wayan Santiyasa

ABSTRACT The economy in Indonesia has shown a relatively consistent increase from year to year where the growth rate at the end of 2017 is 5.5%. In terms of the trade balance, according to the Indonesian Central Bureau of Statistics (BPS) on January 15, 2018 it was said that Indonesia's trade balance had a surplus of 11.84 billion US dollars. The development of the trade sector in Indonesia is also inseparable from the distribution of goods. The distribution of goods is closely related to the distribution cost factor, because the longer the distribution distance, the longer the time and the greater the operational costs needed to distribute the goods. Therefore, it is necessary to determine the optimal distribution channel to obtain distribution efficiency. The problem of distributing this item to the world of computer science is known as the Vehicle Routing Problem (VRP). Along with the rapid development of technology and information, with the use of technology, research related to the distribution of goods has also been carried out. One method that has superior ability in determining the distribution route is artificial bee colony (ABC). Although it has superior performance, the ABC algorithm still has weaknesses where ABC requires a relatively long time to get an optimum solution. The main cause of this weakness is the bee scout technique in finding solutions (food sources). Looking at the weaknesses of the characteristics of bee scout in ABC, in this study the ABC algorithm was optimized by applying two crossover methods, namely Partially Mapped Crossover and Cycle Crossover on the solution search pattern by bee scout. Crossover is one of the optimization techniques aimed at finding the optimum solution in AG. This is the basis for the implementation of hybrid crossover in this vehicle routing problem. From the results of the study it was found that Cycle Crossover (CX) has a better performance than Partially Mapped Crossover (PMX) in optimizing the ABC algorithm, this can be seen from the CX solution produced for all datasets better than PMX. Besides having a better performance in terms of distance, CX also has a<br />faster time performance than PMX.<br />Keywords: artificial bee colony, vehicle routing problem, crossover<br />ABSTRAK<br />Perekonomian di Indonesia telah menunjukkan adanya peningkatan yang relatif konsisten dari tahun ke tahun dimana angka pertumbuhan pada penghujung tahun 2017 adalah 5,5 %. Dari sisi neraca perdagangan, menurut Badan Pusat Statistik (BPS) Indonesia pada tanggal 15 Januari 2018 dikatakan bahwa Neraca Perdagangan Indonesia mengalami surplus sebesar 11,84 milliar dolar AS. Perkembangan sektor perdagangan di Indonesia juga tidak terlepas dari faktor pendistribusian barang. Pendistribusian barang memiliki kaitan yang erat dengan faktor biaya distribusi, karena semakin jauh jarak pendistribusiannya maka semakin lama waktu dan semakin besar biaya operasional yang diperlukan dalam mendistribusikan barang tersebut. Maka dari itu, diperlukan penentuan jalur distribusi yang optimal untuk mendapatkan efisiensi pendistribusian. Permasalahan pendistribusian barang ini pada dunia ilmu komputer dikenal sebagai Vehicle Routing Problem (VRP). Seiring berkembangnya teknologi dan informasi yang pesat, dengan pemanfaatan teknologi, penelitian yang berkaitan dengan pendistribusian barang ini juga telah dilakukan. Salah satu metode yang memiliki kemampuan unggul dalam menentukan rute distribusi adalah artificial bee colony (ABC). Meski memiliki performa yang unggul, tetapi dalam algoritma ABC masih memiliki kelemahan dimana ABC membutuhkan waktu yang relatif lama untuk mendapatkan sebuah solusi optimum. Penyebab utama yang menyebabkan kelemahan ini adalah teknik lebah scout dalam mencari solusi (sumber makanan). Melihat kelemahan karakteristik lebah scout dalam ABC maka dalam penelitian ini dilakukan optimasi algoritma ABC dengan menerapkan dua metode crossover yaitu Partially Mapped Crossover dan Cycle Crossover pada pola pencarian solusi oleh lebah scout.<br />Crossover merupakan salah satu teknik optimasi yang ditujukan untuk pencarian solusi optimum<br />dalam AG. Hal ini menjadi dasar untuk penerapan hybrid crossover dalam permasalahan vehicle<br />routing problem ini. Dari hasil penelitian didapatkan bahwa Cycle Crossover (CX) memiliki kinerja<br />yang lebih baik daripada Partially Mapped Crossover (PMX) dalam mengoptimasi algoritma ABC,<br />hal ini terlihat dari solusi CX yang dihasilkan untuk semua dataset lebih baik dari PMX. Selain<br />memiliki kinerja yang lebih baik dalam hal jarak, CX juga memiliki kinerja waktu yang lebih cepat<br />daripada PMX.<br />Kata Kunci: artificial bee colony, vehicle routing problem, crossover


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