Conventional power grids across the globe are reforming to smart power grids with cutting edge technologies in real time monitoring and control methods. Advanced real time monitoring is facilitated by incorpor- ating ...Conventional power grids across the globe are reforming to smart power grids with cutting edge technologies in real time monitoring and control methods. Advanced real time monitoring is facilitated by incorpor- ating synchrophasor measurement units such as phasor measurement units （PMUs） to the power grid monitoring system. Several physical and economic constraints limit the deployment of PMUs in smart power grids. This paper proposes a pragmatic multi-stage simulated annealing （PMSSA） methodology for finding the optimal locations in the smart power grid for installing PMUs in conjunction with existing conventional measurement units （CMUs） to achieve a complete observability of the grid. The proposed PMSSA is much faster than the conventional simulated annealing （SA） approach as it utilizes controlled uphill and downhill movements during various stages of optimiza- tion. Moreover, the method of integrating practical phasor measurement unit （PMU） placement conditions like PMU channel limits and redundant placement can be easily handled. The efficacy of the proposed methodology has been validated through simulation studies in IEEE standard bus systems and practical regional Indian power grids.展开更多
Today’s more focus and efforts are being put by all the energy leaders towards power generation using renewable energy resources.Fortunately,these resources are becoming affordable to facilitate a swift shift towards...Today’s more focus and efforts are being put by all the energy leaders towards power generation using renewable energy resources.Fortunately,these resources are becoming affordable to facilitate a swift shift towards green and clean energy.Possible strategic assets are an add-on for all the developing nations in terms of economy.The technological advancement and power market revolution resulting in an adequate reduction of renewable energy cost and affordability.This paper mainly focusing on Covid-19 impacts in the African energy sector.Also,analyzing recent developments in African renewable energy generation that holds the immense capacity for im-provisation.This paper highlighting the recommendations in response to the COVID-19 pandemic for the African renewable energy sector.This paper is a result of rigorous analysis based on major issues governing sustainable solutions for Africa.This review paper comes up with effective conclusions to address the challenges in the cur-rent pandemic situation.In Africa abundance of resources is found with huge potential for the generation of power.But still,Africa undergoing a phase of serious crises because they are not able to tap its huge capital of renewable energies.There is a subsequent need for power grid restructuring,energy storage technologies,and parallel mitigation of environmental factors with seasonal variations.Proposed review analysis bringing a better opportunity for all issues towards sustainable solutions,that will ease the renewable energy status in Africa.It is observed that there is an inevitable need to focus on having strong government policy frameworks and proper regulations.The various recommendations are required to swing towards renewable energy development.Com-bined efforts are required in luring foreign investments and to address feasible issues like setting-up targets.This paper demonstrated a smart energy system using a proposed machine learning-based framework for enhancing the PV forecasting and up-gradation in available technologies.展开更多
文摘Conventional power grids across the globe are reforming to smart power grids with cutting edge technologies in real time monitoring and control methods. Advanced real time monitoring is facilitated by incorpor- ating synchrophasor measurement units such as phasor measurement units （PMUs） to the power grid monitoring system. Several physical and economic constraints limit the deployment of PMUs in smart power grids. This paper proposes a pragmatic multi-stage simulated annealing （PMSSA） methodology for finding the optimal locations in the smart power grid for installing PMUs in conjunction with existing conventional measurement units （CMUs） to achieve a complete observability of the grid. The proposed PMSSA is much faster than the conventional simulated annealing （SA） approach as it utilizes controlled uphill and downhill movements during various stages of optimiza- tion. Moreover, the method of integrating practical phasor measurement unit （PMU） placement conditions like PMU channel limits and redundant placement can be easily handled. The efficacy of the proposed methodology has been validated through simulation studies in IEEE standard bus systems and practical regional Indian power grids.
基金The authors are thankful to the International Renewable Energy Agency(IRENA),journal editor,and the anonymous reviewers for their insightful comments and suggestions which greatly improved the manuscript.
文摘Today’s more focus and efforts are being put by all the energy leaders towards power generation using renewable energy resources.Fortunately,these resources are becoming affordable to facilitate a swift shift towards green and clean energy.Possible strategic assets are an add-on for all the developing nations in terms of economy.The technological advancement and power market revolution resulting in an adequate reduction of renewable energy cost and affordability.This paper mainly focusing on Covid-19 impacts in the African energy sector.Also,analyzing recent developments in African renewable energy generation that holds the immense capacity for im-provisation.This paper highlighting the recommendations in response to the COVID-19 pandemic for the African renewable energy sector.This paper is a result of rigorous analysis based on major issues governing sustainable solutions for Africa.This review paper comes up with effective conclusions to address the challenges in the cur-rent pandemic situation.In Africa abundance of resources is found with huge potential for the generation of power.But still,Africa undergoing a phase of serious crises because they are not able to tap its huge capital of renewable energies.There is a subsequent need for power grid restructuring,energy storage technologies,and parallel mitigation of environmental factors with seasonal variations.Proposed review analysis bringing a better opportunity for all issues towards sustainable solutions,that will ease the renewable energy status in Africa.It is observed that there is an inevitable need to focus on having strong government policy frameworks and proper regulations.The various recommendations are required to swing towards renewable energy development.Com-bined efforts are required in luring foreign investments and to address feasible issues like setting-up targets.This paper demonstrated a smart energy system using a proposed machine learning-based framework for enhancing the PV forecasting and up-gradation in available technologies.
