PJM To Test Prep | 206 Questions With 100% Correct
Answers | Verified | Latest Update 2024 | 100% Pass
stability limits are typically between ____ and ____ degrees. - ✔✔5 and 15
degrees
if angular separation of two system points too large, the system becomes
unstable and lose control of ____ and _____. - ✔✔mw and mvar
what mechanisms are utilized by generators to dampen oscillations causes by
minor disturbances in dynamic system? - ✔✔excitation control
governors
protective relaying
,what are typical threats to stability? - ✔✔loss of 1 or more generators
loss of 1 or more major pieces of equip
system faults
low voltage operation
decrease generator ____ output to increase stability - ✔✔mw output
increase generator ____ output to increase stability - ✔✔mvar output
closing in more transmission lines strengthens the system and increases system
______. - ✔✔stability
what is the value (mw, mvar, mva) that satisfy the most limiting system criteria
for a specified configuration to ensure operating within reliability criteria? -
✔✔sol
,system operating limit
a non-converged contingency or actual thermal overload violating a limit
consistend with the facilities rating duration is a.... - ✔✔sol
sol normal violation limit - ✔✔24 hours
sol long term emergency limit - ✔✔4 hours
thermal rating normal limit exceeded for _____ is an sol violation. - ✔✔24 hours
thermal rating lte limit exceeded for ______ is an sol violation - ✔✔4 hours
thermal rating ste limit exceeded for _____ is an sol violation - ✔✔30 minutes to
2 hours
, thermal rating load dump rating exceeded for _____ is an sol violation - ✔✔15
minutes
transient voltage stability limit exceeded for _____ is an sol violation - ✔✔30
minutes or more
system voltage limits valid, non-radial, non-converged system contingency in real-
time sa for _____ or greater is an sol. - ✔✔30 minutes or more
high voltage operating limits are designed to protect... - ✔✔equipment
from damage
low voltage operating limits are designed to protect... - ✔✔system reliability
and equip damage
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