JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech III ENERGY STORAGE SYSTEMS Previous Question Paper (August/September - 2024 - R16)
i) Question paper consists of Part A, Part B.
ii) Part A is compulsory, which carries 25 marks. In Part A, Answer all questions.
iii) In Part B, Answer any one question from each unit. Each question carries 10 marks and may have a, b as sub questions.
Part A
What is flexibility in the energy system?
Answer
Flexibility in an energy system is defined as the capability of the system to reliably and cost-effectively manage the variability and uncertainty in both supply and demand across different timescales. It ensures that the power system can respond to fluctuations in renewable energy generation and changes in consumption patterns while maintaining grid stability and security.
Write any three application of different type of ESS.
Answer
Energy Storage Systems (ESS) are utilized across various sectors to balance supply and demand and improve grid reliability. Three distinct applications include:
- Frequency Regulation: Fast-response battery energy storage systems (BESS) are used to maintain grid frequency by injecting or absorbing power within milliseconds to balance sudden fluctuations in load or renewable energy generation.
- Peak Shaving: Thermal or electrochemical storage systems are employed to store energy during off-peak hours when electricity costs are low and discharge it during peak demand periods, thereby reducing the peak load on the power grid and lowering costs for consumers.
- Renewable Energy Integration: Pumped Hydro Storage (PHS) or large-scale battery banks are used to store excess energy generated from intermittent sources like wind and solar, ensuring a steady power supply even when weather conditions are unfavorable for generation.
List the different type of electrical energy storage system.
Answer
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Discuss the role of storage in an isolated power system with renewable power sources.
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What are the flow batteries advantages as compared to conventional batteries?
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Explain the roles of electrical energy storage technologies in viewpoint of utility.
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What is a double layer capacitor?
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What are the different types of mechanical energy storage?
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List the various layers of smart grid.
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Discuss the future technologies in EVs.
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Part B
What is the difference between electricity consumption and generation?
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What are the roles of Electrical Energy Storage (ESS)?
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Explain the different components of energy storage system with schematic structure.
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Why generation cost is high during peak demand periods?
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Describe about more renewable energy-less fossil fuel utilities.
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Why the electrical energy storage is required and describe the different ESS storage technologies.
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Enumerate the consequence happening in power grid due to day by day congestion.
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Explain the roles of electrical energy storage technologies in viewpoint of generate Renewable Energy Systems.
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Expalin with neat digram how energy is stored in Compressed Air Energy Storage (CAES).
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Explain with neat digram the working of Vanadium Redox Flow battery.
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Explain in detail about design considerations for sizing of different types of energy storage systems for various applications.
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Discuss with neat diagram chemical storage synthetic Natural Gas as given much importance to storage techniques.
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Explain the Thermal Energy storage Phase Change Materials application and characteristics.
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Describe the various Electrical storage systems.
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Discuss with neat diagram the Double-Layer Capacitors (DLC) as Energy Storage System (ESS).
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What are the Standards for Electrical Energy Storage Systems (EES)?
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What are Solar Ponds? Explain with neat digram how energy can be stored and utilized from a solar pond?
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What is hierarchical storage system? And also explain in detail.
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Draw and explain the battery SCADA system.
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How would you explain the internal configuration of battery storage systems?
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