Energy Storage and Transmission Flashcards
(40 cards)
Electricity is often converted to other forms of energy because:
a. It’s easier to see.
b. It can’t be stored easily by
itself.
c. It’s too dangerous to store.
d. It’s always cheaper to
convert.
b. It can’t be stored easily by
itself.
Renewable energy sources like solar and wind need energy storage because:
a. They are always expensive.
b. They produce energy all the time.
c. They depend on weather and are not always available.
d. They are too powerful.
c. They depend on weather and are not always available.
Which type of energy is generally harder to convert into other forms?
a. Electrical energy
b. Mechanical energy
c. Thermal energy
d. Chemical energy
c. Thermal energy
Storing solar energy to use at night is an example of:
a. Power quality.
b. Utility shaping.
c. Automotive applications.
d. Distributed grid technologies.
b. Utility shaping.
Electric vehicles use energy storage to:
a. Make roads smoother.
b. Power the vehicle when it’s moving.
c. Make the car lighter.
d. Cool the engine.
b. Power the vehicle when it’s moving.
What is the main purpose of “power quality” applications?
a. To store energy for long periods.
b. To keep power steady and prevent outages.
c. To power electric cars.
d. To generate energy at home.
b. To keep power steady and prevent outages.
What is “energy transmission”?
a. Making energy at home.
b. Moving energy from where it’s made to where it’s used.
c. Storing energy for later.
d. Using energy in a car.
b. Moving energy from where it’s made to where it’s used.
What are “distributed resources”?
a. Energy sources located far
from cities.
b. Energy sources located at the
edges of the grid, near users.
c. Old, unused power plants.
d. Very large power plants.
b. Energy sources located at the
edges of the grid, near users.
What is the benefit of “advanced composite conductors”?
a. They make power lines
heavier.
b. They make power lines
stronger and lighter.
c. They make power lines more
visible.
d. They make power lines more
expensive.
b. They make power lines
stronger and lighter.
What is the main reason for energy storage in “Variations in Demand”?
a. To make energy more
expensive.
b. To balance energy use
between high and low demand times.
c. To increase power outages.
d. To make power transmission
harder.
b. To balance energy use
between high and low demand times.
What is the relationship between energy density and system size in energy storage
technologies?
a. Higher energy density usually
means larger system size.
b. Energy density is not affected by
system size but directly impacts
efficiency.
c. Larger systems tend to have better
energy density and specific energy
due to economies of scale.
d. Energy density is irrelevant for
systems intended for utility-scale
applications.
c. Larger systems tend to have better
energy density and specific energy
due to economies of scale.
What is the primary role of demand response and energy management systems?
a. To audit power bills for accuracy
b. To delay appliance restart after
blackout events
c. To manage peak loads and reduce
electricity costs
d. To switch feeders between multiple
supply points
c. To manage peak loads and reduce
electricity costs
What is the main reason why pumped hydro storage systems require large areas and significant terrain modification?
a. Their need for modular installation
and rapid scalability.
b. They require significant elevation
differences or underground caverns to operate efficiently.
c. They are designed to have a very low
footprint to minimize land use.
d. They are highly modular and can be
integrated into existing urban areas
without much space
b. They require significant elevation
differences or underground caverns to operate efficiently.
Load forecasting systems differ from basic consumption models because they:
a. Use AI and weather data for
continuously adaptive predictions
b. Control capacitor banks to stabilize
power flow
c. Switch distributed resources based
on local pricing
d. Analyze blackout scenarios through
customer feedback
a. Use AI and weather data for
continuously adaptive predictions
Which statement best describes the expected role of energy storage in a future energy system by 2030?
a. Energy storage systems will be
obsolete by 2030, replaced by
advanced
renewable
generation
technologies.
b. The primary role of energy storage
will be to increase flexibility and
reduce the need for fossil-based peak generation, particularly with the rise of solar and wind power.
c. Energy storage will become less
important as grid expansion and
demand-side management programs
take over energy balancing needs.
d. By 2030, storage technologies will
no longer need to be integrated with
renewable generation system
b. The primary role of energy storage
will be to increase flexibility and
reduce the need for fossil-based peak generation, particularly with the rise of solar and wind power.
System-sensitive devices are specifically designed to:
a. Allow real-time market bidding from consumers
b. Automatically curtail or adjust power use based on grid frequency and voltage
c. Reconfigure transmission paths for emergency energy supply
d. Replace analog power meters with
smart devices
b. Automatically curtail or adjust power use based on grid frequency and voltage
Which of the following statements about energy storage demand is most accurate?
a. Energy
storage
demand
is determined primarily by market
outlook studies, which estimate
future market growth for storage
systems.
b. Energy
storage
demand
is independent of alternative flexibility
options like grid extension or
demand-side management.
c. The technical necessity of energy
storage
is assessed
without considering the economic feasibility of implementing such capacity.
d. Flexible conventional generation is
the sole factor in determining storage
demand for renewable electricity
integration.
a. Energy
storage
demand
is determined primarily by market
outlook studies, which estimate
future market growth for storage
systems.
How do distribution capacity marketplaces influence grid development?
a. By allowing distributed resources toreplace centralized generation permanently
b. By replacing traditional energy
trading with AI-based optimization
c. By posting upgrade costs and
enabling third-party alternatives to
infrastructure expansion
d. By increasing fault tolerance across
entire regional systems
c. By posting upgrade costs and
enabling third-party alternatives to
infrastructure expansion
When comparing energy storage systems, which factor most directly impacts the complexity and cost of implementing smaller-scale storage systems?
a. Self-discharge duration
b. Footprint
c. Unit size
d. Energy density
b. Footprint
Which of the following storage technologies is most likely to be deployed in urban areas due to its small footprint and flexibility?
a. Pumped hydro storage
b. Compressed air energy storage
(CAES)
c. Lithium-ion batteries
d. Flywheel storage system
c. Lithium-ion batteries
In a battery, the electrolyte’s primary function is to:
a. Provide electrons to the external load.
b. Accept electrons from the positive
electrode.
c. Facilitate charge transfer between
electrodes.
d. Store the chemical energy.
c. Facilitate charge transfer between
electrodes.
Which of the following battery types is known for potentially exhibiting the “memory effect”?
a. Nickel-cadmium
b. Lithium-ion
c. Lead-acid
d. Lithium polymer
a. Nickel-cadmium
Pumped hydro energy storage primarily relies on:
a. Chemical reactions.
b. Compressed air.
c. Potential energy of water.
d. Flywheel rotation.
c. Potential energy of water.
Compressed Air Energy Storage (CAES) systems typically use:
a. Chemical electrolytes.
b. Underground caverns or aquifers.
c. Rotating cylinders.
d. Sensible heat storage.
b. Underground caverns or aquifers
