As a Transmission Operator, you realize that the voltage level is starting to decline in
the North West part of the system. Which of the following
... [Show More] devices should you, as a
Transmission Operator, be able to operate, and/or have another entity operate to
raise the voltage level back to normal in the North West part of the system?
Generator Reactive Output
Transformer Underload Tap Changers
All answers are correct
Shunt Capacitor Banks
NERC Standard VAR-001 states, "Each Transmission Operator shall operate or
direct the operation of capacitive and inductive reactive resources within its area -
including reactive generation scheduling; transmission line and reactive resource
switching; and, if necessary, load shedding - to maintain system and Interconnection
voltages within established limits."
- NERC Standard VAR-001
All answers are correct
One of the functions of underfrequency load shedding is to ______________ within
an electrical island that may have been created by a system disturbance.
establish balance between load and interchange
balance generation and load
stabilize balance between generators
stabilize the Interconnection
EPRI 4.8 Underfrequency Load Shedding (UFLS) When disturbances result in power
system islands, there is no guarantee that the islands that form will have the proper
match between generation and load. In fact, there will usually be a mismatch. The
frequency in the island increases or decreases until the correct balance exists
between generation and load. PRC-008, Underfrequency Load Shedding Equipment
- Provide last resort system preservation measures by implementing an Under
Frequency Load Shedding (UFLS) program.
A Balancing Authority that is operating asynchronously (separated from the
Interconnection) should switch its AGC to which mode __________.
flat frequency control
tie line bias control
manual control
flat tie-line control
Automatic Generation Control
flat frequency control
A System Operator is in the process of restoring load after a system collapse. The
system currently has three generators online with a combined capacity of 1200
MWs. Current load on the system is 500 MWs. What is the maximum load that the
System Operator can restore at one time without risking the re-collapse of the
system.
80 MWs [Show Less]