WorksheetsPS1: LOAD FLOW STUDIES
Total questions: 10
Worksheet time: 10mins
Which type of bus is responsible for balancing the active and reactive power in a power system during load flow analysis?
PQ Bus
PV Bus
Reference Bus
Slack Bus
Why is the Fast Decoupled method often preferred over Newton-Raphson in large systems?
Newton-Raphson is faster
Fast Decoupled is used for small systems only
Fast Decoupled is faster than Newton-Raphson
PV buses are not allowed in Fast Decoupled
What generally happens to the bus voltage when the reactive power load increases at that bus?
Voltage increases
Voltage remains constant
Voltage decreases
System becomes more stable
Which type of graph is used in this lab to observe the relationship between reactive power and voltage?
P-V Curve
V-Q Curve
Q-V Curve
X-Y Curve
In PowerWorld Simulator, how is line loading visually represented?
Voltage tables
Line diagrams only
Pie charts
Bar charts
Which of the following is true about PQ buses in load flow analysis?
Voltage and angle are specified
Real and reactive power are specified
Only reactive power is specified
Real power and voltage are specified
What is the purpose of inserting a switched shunt (capacitor) into a power system in PowerWorld?
To increase system frequency
To regulate voltage using reactive power injection
To reduce active power demand
To isolate faulted lines
Why is Bus 6 considered the most sensitive in the Q-V analysis of the 9-bus system?
It has the highest initial voltage
It is closest to the generator
It collapses first as reactive load increases
It has no shunt compensation
Which of the following is a correct sequence to start a Newton-Raphson power flow simulation in PowerWorld?
Open Edit Mode > Insert Graph
Start > Solve > Load CSV
Run Mode > Solve Power Flow – Newton
Compile Code > Run Network
What is the advantage of using PowerWorld’s animated display during load flow analysis?
Shows real-time animated power flow
Limits line current
Avoids voltage collapse
Prevents overloads
