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Multi-level supervisory emergency control for operation of remote area microgrid clusters

Journal of Modern Power Systems and Clean Energy 2019年第5期7卷 1210-1228页

作者： munira batool Farhad SHAHNIA Syed M.ISLAM School of Electrical Engineering Computing and Mathematical SciencesCurtin UniversityPerthAustralia School of Engineering and Information Technology Murdoch UniversityPerthAustralia School of Science Engineering and Information TechnologyFederation UniversityBallaratAustralia

Remote and regional areas are usually supplied by isolated and self-sufficient electricity systems,which are called as microgrids(MGs).To reduce the overall cost of electricity production,MGs rely on non-dispatchable renewable *** such as overloading or excessive generation by renewable sources can result in a substantial voltage or frequency deviation in *** paper presents a supervisory controller for such *** key idea is to remedy the emergencies by optimal internal or external support.A multi-level controller with soft,intermedial and hard actions is *** soft actions include the adjustment of the droop parameters of the sources and the controlling of the charge/discharge of energy *** intermedial action is exchanging power with neighboring MGs,which is highly probable in large remote *** the last remedying resort,curtailing loads or renewable sources are assumed as hard *** proposed controller employs an optimization technique consisting of certain objectives such as reducing power loss in the tie-lines amongst MGs and the dependency of an MG to other MGs,as well as enhancing the contribution of renewable sources in electricity *** of the fuel consumption and emissions of conventional generators,along with frequency and voltage deviation,is the other desired *** performance of the proposal is evaluated by several numerical analyses in MATLAB~?.

关键词： Microgrids Emergency controller Optimization Remote area

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Analysis and Power Quality Improvement in Hybrid Distributed Generation System with Utilization of Unified Power Quality Conditioner

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Computer Modeling in Engineering & Sciences 2023年第2期134卷 1105-1136页

作者： Noor Zanib munira batool Saleem Riaz Farkhanda Afzal Sufian Munawar Ibtisam Daqqa Najma Saleem Department of Electrical Engineering University of Engineering and TechnologyTaxila47050Pakistan School of Automation Northwestern Polytechnical University170072Xi’anChina National University Science&Technology MCSIslamabad44000Pakistan Department of Quantitative Methods College of Business AdministrationImam Abdulrahman Bin Faisal UniversityDammam34212Saudi Arabia Department of Mathematics and Natural Sciences College of Sciences and Human StudiesPrince Mohammad Bin Fahd UniversityKhobar31952Saudi Arabia

This paper presents a comprehensive study that includes the sizing and power flow by series and parallel inverters in a distributed generation system(DGs)that integrates the system of hybrid wind photovoltaic with a unified power quality conditioner(UPQC).In addition to supplying active power to the utility grid,the system of hybrid wind photovoltaic functions as a UPQC,compensating reactive power and suppressing the harmonic load ***,the load is supplied with harmonic-free,balanced and regulated output *** PVWind-UPQC is established on a dual compensation scheme,the series inverter works like a sinusoidal current source,while the parallel inverter works like a sinusoidal voltage ***,a smooth alteration from interconnected operating modes to island operating modes and vice versa can be achieved without load voltage *** PV-Wind-UPQC inverters handle the energy generated through the hybrid wind photovoltaic system and the energy demanded through the load,the converters should be sized cautiously.A detailed study of the flow of power via the PV-Wind-UPQC is imperative to gain a complete understanding of the system operation and the proper design of the ***,curves that allow the sizing of the power converters according to the power flow via the converters are presented and *** results are presented to assess both steady state and dynamic performances of the grid connected hybrid system of *** investigation is verified by simulating and analyzing the results with Matlab/Simulink.

关键词： Photovoltaic wind turbine unified power quality conditioner power flow distributed generation system

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