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Optimizing Power Flow in Northern Cameroon’s Interconnected grid: Challenges and Solutions

Journal of Power and Energy Engineering 2024年第9期12卷 63-83页

作者： Jean Ndoumbe Ivan Basile Kabeina Michael Koumbou Piembe Martin Ndjock Laboratory of Computer Engineering Data Science and Artificial Intelligence National Higher Polytechnic School of Douala University of Douala Douala Cameroon Laboratory of Electronics Electrotechnics Automation and Telecommunications National Higher Polytechnic School of Douala University of Douala Douala Cameroon

This paper presents an analysis of the power flow within the Northern Interconnected grid of Cameroon. The Newton-Raphson method has been performed, known for its accuracy, under MATLAB software, to model and solve complex power flow equations. This study simulates a series of outage scenarios to evaluate the responsiveness of the grid. The results obtained underline the crucial importance of reactive power management and highlight the urgent need to consolidate the grid infrastructure of North Cameroon. To increase grid resilience and stability, the paper recommends the strategic integration of renewables and the development of interconnections with other power grids. These measures are presented as viable solutions to meet current and future energy distribution challenges, ensuring a reliable and sustainable power supply for Cameroon.

关键词： Power Flow Northern Interconnected grid Newton-Raphson MATLAB grid stability

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Fuzzy Logic Controller-based Synchronverter in grid-connected Solar Power System with Adaptive Damping Factor

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Chinese Journal of Electrical Engineering 2021年第2期7卷 37-49页

作者： Kah Yung Yap Chee Ming Beh Charles R.Sarimuthu Department of Electrical and Computer Systems Engineering(ECSE) School of EngineeringMonash University MalaysiaSubang Jaya 47500Malaysia

In recent years,renewable energy sources,specifically solar power systems,have developed rapidly owing to their technological maturity and cost ***,its grid integration deteriorates frequency stability because of insufficient rotating masses and inertial ***,a synchronverter,which is an inverter that mimics the operation of a synchronous generator,is crucial to interface solar power in a power *** stabilizes the power grid by emulating a virtual ***,a conventional proportional-integral(PI)-based synchronverter is not equipped with an adaptive damping factor(Dp)or a digitalized smart controller to manage fast-responding solar ***,a novel fuzzy logic controller(FLC)framework is proposed such that the synchronverter can operate in a grid-connected solar power *** this study,Dp is controlled in real time using an FLC to achieve balance between speed and stability for frequency error correction based on frequency *** of four case studies performed in Matlab/Simulink show that the proposed FLC-based synchronverter can stabilize the grid frequency by reducing the frequency deviation by at least 0.2 Hz(0.4%),as compared with the conventional PI-based synchronverter.

关键词： Fuzzy logic controller(FLC) synchronverter renewable energy system(RES) grid stability solar power system

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Testing PV Central Inverters＇ Compliance with International grid Codes

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Journal of Energy and Power Engineering 2014年第9期8卷 1552-1558页

作者： Robin Grab Soenke Rogalla Roland Singer Gregor Doetter Department of Power Electronics Fraunhofer Institute for Solar Energy Systems ISE Freiburg 79110 Germany

In many electrical grids worldwide, the rising amount of installed PV （photovoltaic） power entails a considerable influence of PV systems on grid quality and stability. Consequently, in the wake of the revised German medium voltage directives issued in 2009, new requirements for PV inverters have been established internationally. At Fraunhofer ISE＇s Inverter Laboratory, approximately 25 large PV inverters with a nominal power of up to 880 kVA have been characterized in the past three years. In this period, the focus of many inverter manufacturers has begun to shift from traditional European markets towards an international perspective. Therefore, experiences with numerous different grid codes have been gained by our team. This work summarizes the similarities and differences between these grid codes. Additionally, several requirements that have proved to be critical will be examined. Finally, the adequacy of these grid codes to guarantee the safe and reliable operation of electrical grids is discussed.

关键词： Large grid-connected PV systems inverter grid stability grid integration electrical properties.

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grid Integration of Large Off-Shore Wind Farms

Grid Integration of Large Off-Shore Wind Farms

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The 3～(rd) World Wind Energy Conference & Renewable Energy Exhibition the 2nd Wind Power Asia

作者： B. R. Oswald Institute of Electric Power Systems University of Hannover PO-Box 6009 D-30060 Hannover Germany

At the end of 2003, 15387 wind energy turbines with the total power of 14609 MW were installed in Germany. The installation of several large off-shore wind farms in the north sea, each with over 100

关键词： Offshore wind farms grid stability Voltage control Frequency control Distributed reactive power generation

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