CHAPTER 9 Flashcards
(40 cards)
Electricity is often converted to other forms of energy because:
It can’t be stored easily by
itself.
Renewable energy sources like solar and wind need energy storage because:
They depend on weather and
are not always available.
Which type of energy is generally harder to convert into other forms?
Thermal Energy
Storing solar energy to use at night is an example of:
Utility Shaping
What is the main purpose of “power quality” applications?
To keep power steady and
prevent outages.
Electric vehicles use energy storage to:
Power the vehicle when it’s
moving.
What is “energy transmission”?
Moving energy from where
it’s made to where it’s used.
What are “distributed resources”?
Energy sources located at the
edges of the grid, near users.
What is the benefit of “advanced composite conductors”?
They make power lines stronger and lighter
What is the main reason for energy storage in “Variations in Demand”?
To balance energy use
between high and low
demand times.
What is the relationship between energy density and system size in energy storage
technologies?
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?
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?
They require significant elevation
differences or underground caverns to operate efficiently.
Load forecasting systems differ from basic consumption models because they:
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?
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:
Automatically curtail or adjust power use based on grid frequency and voltage
Which of the following statements about energy storage demand is most accurate?
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?
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?
Footprint
Which of the following storage technologies is most likely to be deployed in urban areas due
to its small footprint and flexibility?
Lithium-ion batteries
In a battery, the electrolyte’s primary function is to:
Facilitate charge transfer between
electrodes.
Which of the following battery types is known for potentially exhibiting the “memory
effect”?
Nickel-cadmium
Pumped hydro energy storage primarily relies on:
Potential energy of water.
Compressed Air Energy Storage (CAES) systems typically use:
Underground caverns or aquifers.
