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Nature-inspired Hybrid Optimization Algorithms for load flow analysis of Islanded Microgrids

Journal of Modern Power Systems and Clean Energy 2020年第6期8卷 1250-1258页

作者： Saad Mohammad Abdullah Ashik Ahmed Quazi Nafees Ul Islam the Department of Electrical and Electronic Engineering Islamic University of TechnologyBoard BazarGazipur 1704Bangladesh

load flow analysis is a significant tool for proper planning,operation,and dynamic analysis of a power system that provides the steady-state values of voltage magnitudes and angles at the fundamental ***,due to the absence of a slack bus in an islanded microgrid,modified load flow algorithms should be adopted considering the system frequency as one of the solution *** paper proposes the application of nature-inspired hybrid optimization algorithms for solving the load flow problem of islanded *** nature-inspired algorithms such as genetic algorithm(GA),differential evolution(DE),flower pollination algorithm(FPA),and grasshopper optimization algorithm(GOA)are separately merged with imperialistic competitive algorithm(ICA)to form four hybrid algorithms named as ICGA,ICDE,ICFPA,and *** of these algorithms are tested on the 6-bus test system and the modified IEEE 37-bus test system.A comparison among the proposed algorithms is carried out in terms of statistical analysis conducted using SPSS statistics *** the statistical analysis,it is identified that on an average,ICDE takes less number of iterations and consequently needs less execution time compared with other algorithms in solving the load flow problem of islanded microgrids.

关键词： Nature-inspired hybrid algorithm global optimization islanded microgrid load flow analysis

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Enhancement of Real Power Transfer Capability of Transmission Lines

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Journal of Energy and Power Engineering 2012年第7期6卷 1114-1118页

作者： Nahid-Al-Masood Amina Hasan Abedin Abdul Hasib Chowdhury Department of Electrical and Electronic Engineering Bangladesh University of Engineering and Technology Dhaka 1000Bangladesh Department of Electrical and Electronic Engineering BRAC University Dhaka 1000 Bangladesh

As power system interconnections become more prevalent, there has been an increase in use of thyristor controlled shunt connected compensation devices for dynamic power compensation and enhancement of real power transmission capacity. In this paper, an enhancement technique of real power transfer capacity of transmission lines is presented. A SVC （static var compensator） is designed and applied to a simple power system for this purpose. Increase in power flow and improvement in bus voltage profile are observed after using the SVC. Stability analysis of the system after experiencing fault as well as consequent fault clearance by time domain analysis has also beeu performed and satisfactory results are obtained.

关键词： SVC (static var compensator) power transfer capability minimum susceptance load flow analysis fault analysis stabilityanalysis.

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