Labelling five-bus system power values

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SUMMARY

The discussion focuses on the confusion surrounding the labeling of power values in Power Analysis diagrams, specifically active power, reactive power, and complex power. The user seeks clarification on the correctness of their Sg3 value and the calculation of Qg3. Additionally, they inquire about the significance of the 15kV value under the 800MVA rating and its application in solving power flow problems using the Gauss-Seidel method, Newton-Raphson method, or fast decoupled method.

PREREQUISITES
  • Understanding of active power, reactive power, and complex power
  • Familiarity with power system analysis techniques
  • Knowledge of the Gauss-Seidel method for power flow analysis
  • Experience with the Newton-Raphson method in electrical engineering
NEXT STEPS
  • Research the calculation methods for reactive power (Qg3) in power systems
  • Study the significance of voltage levels (15kV) in power flow analysis
  • Learn about the fast decoupled method for solving power flow problems
  • Review the guidelines for presenting power analysis problems effectively
USEFUL FOR

Electrical engineers, power system analysts, and students studying power flow analysis who need clarity on power value labeling and calculation methods in electrical systems.

unseenmisfit
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I'm having trouble determining what the values are on my Power Analysis diagrams. I get confused with active power, reactive power, and complex power.
Can someone take a look at my attachment and tell me if I labeled the values correctly?
I'm mainly curious as to if my Sg3 value is correct and if I can calculate Qg3 in the way that I have.
And what does the 15kV, under the 800MVA, mean? How would I use that value when solving the power flow problem with Gauss-Seidel method, Newton-Ralphson method, or fast decouple method?
image.jpeg
 
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Thanks for the post! Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post?
 
unseenmisfit said:
I'm having trouble determining what the values are on my Power Analysis diagrams. I get confused with active power, reactive power, and complex power.
Can someone take a look at my attachment and tell me if I labeled the values correctly?
I'm mainly curious as to if my Sg3 value is correct and if I can calculate Qg3 in the way that I have.
And what does the 15kV, under the 800MVA, mean? How would I use that value when solving the power flow problem with Gauss-Seidel method, Newton-Ralphson method, or fast decouple method?View attachment 74357
How can people check your work when the picture you attached has only part of the problem? Also, see the homework guidelines (https://www.physicsforums.com/threads/guidelines-for-students-and-helpers.686788/), especially 5 and 8.
 

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