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In load flow analysis, what does the term 'slack bus' refer to?

Practice Questions

Q1
In load flow analysis, what does the term 'slack bus' refer to?
  1. A bus with zero load
  2. A bus that maintains system frequency
  3. A bus that compensates for losses in the system
  4. A bus with the highest voltage

Questions & Step-by-Step Solutions

In load flow analysis, what does the term 'slack bus' refer to?
  • Step 1: Understand that in a power system, we need to balance the amount of electricity generated and consumed.
  • Step 2: Recognize that sometimes there are losses in the system, meaning not all generated power is used effectively.
  • Step 3: Learn that the slack bus is a special bus (or node) in the power system that helps to balance these losses.
  • Step 4: Know that the slack bus provides extra power to make sure the total generation matches the total consumption, including losses.
  • Step 5: Remember that the slack bus also helps in calculating the voltage and angle of the system, which are important for proper operation.
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