Source And Demand Side Energy Management System Using Fuzzy Logic

Abstract

Today And In The Future, The Increase Of Fuel Price, Deregulation, And Environmental Constraints Give More Opportunities For The Usage Of Renewable Energy Sources (RES) In Power Systems. A Microgrid Concept Is Needed In Order To Integrate Renewable Sources In The Electrical Grid. It Comprises A Low Voltage (LV) System With Distributed Energy Resources (Ders) Together With Storage Devices And Flexible Loads. The Integration Of RES Into A Microgrid Can Cause Challenges And Impacts On Microgrid Operation. The Objective Of This Work Is To Design A Scheme To Control The Energy Flow Of A Hybrid Renewable Energy System With Multiple Renewable Energy Sources With An Emphasis On Solar And Wind Power And On Multiple Energy Storage Systems. The Use Of Energy Storage Is Necessary Due To The Intermittence Of Renewable Energy Sources And The Resulting Peak Power Mismatch Between The Sources And The Load. In Addition, The Use Of Energy Storage Can Increase The Reliability And Overall Stability Of The System. In This Work, Batteries Are Used As The Primary Energy Storage System For Short And Medium-Term Storage, While The Hydrogen Fuel Cell Is Used As Long-Term Energy Storage. Since Power And Demand Are Not Completely Predictable And Have A Time-Varying Nonlinear Behavior, Computational Intelligence Is Introduced To Solve This Problem And Provide An Adequate Control Algorithm. The Proposed Methodology Can Be Optimized So That The System Is Able To Adapt To Its Working Environment And Provide The Best Results In Certain Circumstances. The Controller Has Three Main States Such As Discharge Mode Which Allows The Battery And Hydrogen Fuel Cell To Bear The Load, Balance Mode When The Supply Power Is Equal To The Demand, And The Controller At Rest, And Finally, The Charge Mode Which Allows The Battery And The Electrolysis Of Water To Receive Excess Energy And Store It For Later Use. The System Model Is Designed And Simulated In The Matlab Simulink Environment To Check The Proposed Schema Efficiency.Finally, The Fuzzy Logic Controller Is Adopted To Solve The Optimal Scheduling Problem Of The Isolated Micro grid The Simulation Results Indicate That The Micro Source Scheduling Strategy Proposed In This Paper Can Improve The Operation Economy And Environmental Conservation Of The System. It Can Improve The Reliability Of Microgrid Power Supply And Reduce Energy Waste.