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Q#1
Load Flow Analysis
GATE EE 2025
MCQ
+1 mark
-0.33 marks
During a power failure, a domestic household uninterruptible power supply (UPS) supplies AC power to a limited number of lights and fans in various rooms. As per a Newton-Raphson load-flow formulation, the UPS would be represented as a
Slack bus
PV bus
PQ bus
PQV bus
Explanation:
During a power failure, the only power source is UPS. Since for convergence of load flow solution we need to declare one bus as Slack Bus and that bus needs to have power source. In our case only one bus has power source i.e. UPS and hence that bus needs to be treated as Slack Bus.
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