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Real-time Pricing Enabled Demand Response And Optimal Control Of Frequency And Voltage For Islanded Microgrids

Posted on:2024-09-24Degree:DoctorType:Dissertation
Institution:UniversityCandidate:AFTAB AHMED ALMANIFull Text:PDF
GTID:1522306917494854Subject:Power Systems and its Automation
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It is essential to have renewable energy sources(RES)in the electricity producing industry.In order to eliminate the global warming and to diminish the pollution generated by fossil fuelbased generation and diversify the energy mix to ensure energy security and sustainability.Solar and Wind are vastly been regarded massively effective RES remedy to reduce greenhouse gas emissions.Progress in renewable energy technology have given better outcomes in the production of electricity at reasonable per unit cost.There is an impact of temperature,wind direction,wind speed,rainfall,cloud cover and radiation the amount of energy generated by these renewable energy resources thus the impact remains amid them.By this fluctuation,the large-scale integration of mentioned sources into the power system is highly and badly affected.Real time pricing Demand Response model for energy management consisted on effective learning.By the impression of the architectural changes in the model enormously revived the pricing and demand results utilizing long short-term memory(LSTM).The objective of this thesis is to observe the all effects of RES through machine learning for forecasting the pricing and demand precisely so that these sources can be used in a better way.The dissertation presents and has got two different kinds of studies over RES,and one of them is based on forecasting and while the second with frequency and voltage regulation in an island of Microgrid.The detailed reviews are discussed in the following ways:Firstly:The environment friendly energy producing methods are based or demanded by sustainable energy development where pricing method and system compel influence the wellplanned use of the energy approaches.For permission of demand response(DR)activities,real time pricing(RTP)is theoretically better to last one pricing system.To make the supply-demand correct,imbalances as the technology has developed the DR source has been beneficial many different systems and sources can manipulate the DR.However,most of these remedies are not capable of manipulating rising demand and forecasting prices for the future time slot.A real timepricing DR model to the energy management which is based on deep learning is provided in this research and the learning framework and module is planned on demand response and pricing of real time.Then the study data from the Australian energy market operator(AEMO)was collected for this article.The learning framework was trained more than 17 years of data and information to predict the real upcoming price and demand.The suggested deep learning-based dynamic pricing planning which is to be investigated accordingly and two more predictions are directed;the actual predicted demand and actual predicted price.Utilizing long short-term memory(LSTM),pricing and demand outcomes were calculated in this part of research,which highly got revived later on by architectural changes in the world.Secondly;the power forecasting scheme for the wind energy is proposed and presented.The study is put forward hybrid forecasting model uniting Wavelet transform(WT),Randomness operator-based particle swarm optimization(ROPSO)methodology and Non-linear autoregressive moving average with exogenous(NARMAR)Hybrid WT-ROPSO-NARMAX for power forecasting of a real wind plant comprised and based on Predication error-based forecasting(PEBF)technique.The model is produced through uniting association form wind system’s Supervisory Control and Data Acquisition(SCADA)real power record with the numerical Weather Prediction(NWP)meteorological data more than one year utilizing a fifteen minutes time step.There is wavelet which is used in the model that is suggested model to take a significant influence over ill-behaved meteorology,terrible weather conditions and SCADA taken data and NARMAX procedure and techniques are utilized to revive the map the NWP meteorological fluctuating and(SCADA)solar power nonlinear connection.The ROPOS is used to adjust the NARMAX of settings to improvise the prediction validity.The hybrid WT-ROPSO-NARMAX model is managed and planned to train in this suggested plan,difference between predicted and output power enhances form a definite threshold elaborated based on system vital and demands.The results of simulation and numerical have shown that the model which was suggested can precisely forecast the wind output power so on.Thirdly;the study suggests a new improved(GWO)algorithm is regarded a square root gray wolf optimization(SRGWO),that presents revived performance without compromising its hardiness and accountability.The SRGWO algorithm is a systematic meta-heuristic algorithm that follows the gray wolf societal hierarchy behavior.The proposed algorithm was confirmed and proved with twenty-three benchmark functions and achieved effective results than other algorithms.Fourth;the algorithm is utilized to optimal voltage and frequency regulation of a photovoltaic on microgrid(MG)system using in an islanded mode during distributed generation(DG)insertion and load change positions.The voltage and frequency gain parameters of Proportional-Integral(PI)controllers are optimized.A juxtaposition of the simulation outcomes of the SRGWO algorithm with that original gray wolf algorithm(GWO),Practical Swarm Optimization(PSO),Enhance gray wolf optimization(EGWO),Augmented gray wolf optimization(AGWO),the gravitational search algorithm(GSA)shows that the proposed algorithm importantly revives the system accuracy and performance improvising its simplicity and feasible usage.Moreover,the SRGWO algorithm achieved the minimum fitness function value in a few iterations than different algorithm.Furthermore,it revives power quality of the system to consider the minimum total harmonic distortion(THD).
Keywords/Search Tags:Real pricing, demand response, gray wolf optimization algorithm, Microgrid, prediction error-based power forecasting scheme, voltage and frequency controller, PI controller
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