MicroGrid and Energy Storage System

Information about MicroGrid and Energy Storage System

Published on July 28, 2014

Author: abin2892

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PowerPoint Presentation: Micro Gr d MICROGRID CONCEPTS AND ENERGY STORAGE SYSTEMS ABIN BABY, 13112602, S7 EEE. COLLEGE OF ENGINEERING MUNNAR Outline: Outline Introduction to Microgrid. The Need of Microgrids. Components of Microgrids. Microgrid Operating Modes. Need for ESSs in Microgrids. Energy storage technologies. Advantages & Disadvantages of Microgrid . On going Microgrid activities. Future Directions on Microgrid Research. References . Micro Gr d 2 COLLEGE OF ENGINEERING MUNNAR Introduction To Microgrid: Introduction To Microgrid What is Microgrid? A group of interconnected loads and distributed energy resources within clearly defined electrical boundaries that acts as a single controllable entity with respect to the grid. • E nables local power generation for local loads. C omprises of various small power generating sources that makes it highly flexible and efficient. Micro Gr d 3 COLLEGE OF ENGINEERING MUNNAR Introduction To Microgrid: Introduction To Microgrid What is Microgrid? It is connected to both the local generating units and the utility grid thus preventing power outages . Excess power can be sold to the utility grid . Size of the Microgrid may range from housing estate to municipal regions. 4 COLLEGE OF ENGINEERING MUNNAR Micro Gr d KEY ATTRIBUTES OF MICROGRID: KEY ATTRIBUTES OF MICROGRID Grouping of interconnected loads and distributed energy resources Can operate in island mode or grid-connected if desired Acts as a single controllable entity to the grid Micro Gr d 5 COLLEGE OF ENGINEERING MUNNAR PowerPoint Presentation: The Need Of Microgrid Microgrid could be the answer to our energy crisis. Transmission losses gets highly reduced. Microgrid results in substantial savings and cuts emissions without major changes to lifestyles. Provide high quality and reliable energy supply to critical loads 6 COLLEGE OF ENGINEERING MUNNAR Micro Gr d Components of microgrid: Components of microgrid Distributed Generation Loads Energy storage systems Static disconnect switch Controller Mode switching device Point of Common Coupling Micro Gr d 7 COLLEGE OF ENGINEERING MUNNAR PowerPoint Presentation: Hybrid AC / DC Microgrids Renewable Energy Resources Main Utility Grid Compressed Air System Electric Vehicles PCC Batteries Household appliances and electronics PV EV Flywheel Power Electronics PV WT IBS DC Coupled Subsystem PV 8 COLLEGE OF ENGINEERING MUNNAR Micro Gr d PowerPoint Presentation: The Need Of Microgrid Microgrid could be the answer to our energy crisis. Transmission losses gets highly reduced. Microgrid results in substantial savings and cuts emissions without major changes to lifestyles. Provide high quality and reliable energy supply to critical loads Micro Gr d 9 COLLEGE OF ENGINEERING MUNNAR PowerPoint Presentation: Microgrid Operating Modes Grid Connected Mode: Utility grid is active. Static switch is closed All the feeders are being supplied by utility grid. Micro Gr d 10 COLLEGE OF ENGINEERING MUNNAR PowerPoint Presentation: Renewable Energy Resources Main Utility Grid Compressed Air System Electric Vehicles PCC Batteries Household appliances and electronics PV EV Flywheel Power Electronics PV WT IBS DC Coupled Subsystem PV 11 COLLEGE OF ENGINEERING MUNNAR Micro Gr d PowerPoint Presentation: Microgrid Operating Modes Island Mode: Utility grid is not supplying power Static switch is open. Feeder A, B, C are being supplied by Microsources. Feeder D (not sensitive ) is dead. Micro Gr d 12 COLLEGE OF ENGINEERING MUNNAR PowerPoint Presentation: Renewable Energy Resources Compressed Air System Electric Vehicles Batteries Household appliances and electronics PV EV Flywheel Power Electronics PV WT IBS DC Coupled Subsystem PV 13 COLLEGE OF ENGINEERING MUNNAR Micro Gr d PowerPoint Presentation: Micro Gr d 14 COLLEGE OF ENGINEERING MUNNAR PowerPoint Presentation: Needs of ess in microgrids Crucial element in the integration of DG into Microgrid. Critical role in stabilising the voltage and frequency. Micro Gr d 15 COLLEGE OF ENGINEERING MUNNAR PowerPoint Presentation: 16 ENERGY STORAGE IN MICROGRID High Performance: Avoid costly downtime and battery replacements Very high cycle life Extremely abuse tolerant Ability to stand at partial state of charge High efficiency Self-balancing Wide operating temperature range Minimal degradation COLLEGE OF ENGINEERING MUNNAR Micro Gr d PowerPoint Presentation: Safe: Inherently safe chemistry Not flammable, explosive, or corrosive No dangerous or toxic components Sustainable: Simple, abundant, nontoxic materials Environmentally benign materials No corrosive acids or noxious fumes Suitable for deployment globally Excellent Economics : Industry-leading total cost of ownership Low acquisition costs ($/kWh ) Better value than lead acid or lithium ion No regular maintenance No thermal management No active management required 17 COLLEGE OF ENGINEERING MUNNAR Micro Gr d PowerPoint Presentation: Energy storage system ESS include electrochemical battery , super capacitor, compressed air energy storage , super conducting energy storage , flywheel energy storage etc. . Lithium ion is commonly used because best energy to weight ratio and slow loss of charge when not in use. ESS store energy at the time of surplus and redispatch it when needed . 18 COLLEGE OF ENGINEERING MUNNAR Micro Gr d PowerPoint Presentation: ESS plays an important role in microgrid . Sizing of ESS to be considered first when considering ESS in Microgrid . ESS increase the reliability of power system . The cost of ESS includes one time ESS cost and the annual maintenance cost . The battery storage system made up of small battery blocks. Energy storage system 19 COLLEGE OF ENGINEERING MUNNAR Micro Gr d PowerPoint Presentation: ESS in islanded microgrid Sizing of a suitable battery bank in terms of power and energy help in s having the peak demand . Stores excess renewable energy and supply load when renewable energy is low . When ESS discharges its energy to power grid , its generating positive real power 20 COLLEGE OF ENGINEERING MUNNAR Micro Gr d PowerPoint Presentation: ESS in grid connected microgrid The upstream grid can be treated as bidirectional generator which generate positive power when power is transferred from the MG and generate negative power when the power transferred from the Microgrid to upstream grid . The output of bidirectional generator is limited by the capacity of transmission line between the Microgrid and upstream grid . 21 COLLEGE OF ENGINEERING MUNNAR Micro Gr d PowerPoint Presentation: Energy storage technologies Ultracapacitors . Superconducting magnetic ESS. Compressed air. Pumped hydro . Fuel cells . Fly wheels . Batteries . Micro Gr d 22 COLLEGE OF ENGINEERING MUNNAR Types of batteries: Types of batteries Nickel Cadmium. Lead Acid. Li-ion. Micro Gr d 23 COLLEGE OF ENGINEERING MUNNAR On going Microgrid activities: On going Microgrid activities CERTS *Demonstrated in Santa Rita jail, in California *Main objective- Reduce M icrogrid system cost Increase reliability Micro Gr d 24 COLLEGE OF ENGINEERING MUNNAR PowerPoint Presentation: Fort Sill Micro Gr d 25 COLLEGE OF ENGINEERING MUNNAR PowerPoint Presentation: SPIDERS program Illinois Institute of Technologies perfect power system Micro Gr d 26 COLLEGE OF ENGINEERING MUNNAR Conventional Grid vs. Microgrid: Conventional Grid vs. Microgrid Efficiency of conventional grid is very low as compared to Microgrid . Large amount of energy in the form of heat is wasted in conventional grid . Power sources in case of Microgrid (often referred to as Microsources ) are small and are located in close proximity to load . Micro Gr d 27 COLLEGE OF ENGINEERING MUNNAR PowerPoint Presentation: Advantages & Disadvantages Microgrid Advantages A major advantage of a Microgrid , is its ability, during a utility grid disturbance, to separate and isolate itself from the utility seamlessly with little or no disruption to the loads within the Microgrid . In peak load periods it prevents utility grid failure by reducing the load on the grid. Significant environmental benefits made possible by the use of low or zero emission generators. Micro Gr d 28 COLLEGE OF ENGINEERING MUNNAR PowerPoint Presentation: Advantages & Disadvantages Microgrid Advantages The use of both electricity and heat permitted by the close proximity of the generator to the user, thereby increasing the overall energy efficiency. Microgrid can act to mitigate the electricity costs to its users by generating some or all of its electricity needs. Micro Gr d 29 COLLEGE OF ENGINEERING MUNNAR PowerPoint Presentation: Advantages & Disadvantages Microgrid Disadvantages Voltage, frequency and power quality are three main parameters that must be considered and controlled to acceptable standards whilst the power and energy balance is maintained. Electrical energy needs to be stored in battery banks thus requiring more space and maintenance. Resynchronization with the utility grid is difficult. Micro Gr d 30 COLLEGE OF ENGINEERING MUNNAR PowerPoint Presentation: Advantages & Disadvantages Microgrid Disadvantages Microgrid protection is one of the most important challenges facing the implementation of Microgrids . Issues such as standby charges and net metering may pose obstacles for Microgrid . Interconnection standards needs to be developed to ensure consistency. IEEE P1547, a standard proposed by Institute of Electrical and Electronics Engineers may end up filling the void. Micro Gr d 31 COLLEGE OF ENGINEERING MUNNAR Future Directions on Microgrid Research: Future Directions on Microgrid Research To investigate full-scale development, field demonstration, experimental performance evaluation of frequency and voltage control methods under various operation modes . Transition between grid connected and islanded modes on interaction phenomena between distribution generation and high penetration of distributed generation . Transformation of Microgrid system today into the intelligent, robust energy delivery system in the future by providing significant reliability and security benefits. Micro Gr d 32 COLLEGE OF ENGINEERING MUNNAR Future scope: Future scope In the near future when cost of Microgrid system will be affordable then Microgrids will become more popular and conventional grid will be replaced by Micro grid. Research are going such as to increase stability and reliability of the Microgrid for effecttive working. Micro Gr d 33 COLLEGE OF ENGINEERING MUNNAR conclusion: conclusion Micro Gr d Micro-Grid gives impetus to the use of Renewable sources of energy. Reliability is achieved due to decentralization of supply. In an event of Power Grid failure Micro-Grid is one of the best alternatives . 34 COLLEGE OF ENGINEERING MUNNAR references: references [1] H. Rongxian , L. Zhiwen , C. Yaoming , W. Fu and R. Guoguang "DC micro-grid simulation test platform", Proc. 9thTaiwan Power Electron. Conf ., pp.1361 -1366 2010 [2] S. Morozumi "Micro-grid demonstration projects in Japan", Proc. IEEE Power Convers. Conf., pp.635 -642 Apr. 2007 [3] YUAN Vue , LI Zhenjie , FENG Yu. "Development Purposes, Orientations and prospects of microgrid in China". Automation of Electric Power Systems (in Chinese), voU , pp.59-64., Apr. 2010 . [4] LU Zongxiang , WANG Caixia , MIN Y ong . "Overview on microgrid research ". Automation of Electric Power Systemsvo1.l9, pp.lOO-l06, Apr . 2007. Micro Gr d 35 COLLEGE OF ENGINEERING MUNNAR PowerPoint Presentation: 36 For other reference papers in this topic and if you have any doubts contact me facebook.com/abin2892 [email protected] PowerPoint Presentation: 37 Another version of this presentation with video is uploaded on the following link http://www.slideshare.net/abin2892/microgrid-and-energy-storage-system-complete-details-new-ppt PowerPoint Presentation: THANK YOU 38 PowerPoint Presentation: ANY QUERIES? 39

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