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L33 / Power-flow analysis

Power Flow II

Assemble Y-bus from series branches, line charging, fixed shunts, and transformer taps.

to be released32 slides

This lecture's concept outline

L33

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Original slide headings32
  1. 1Lecture outline
  2. 2Starting problem
  3. 3Bus 1 current balance
  4. 4Collecting the voltage terms
  5. 5The bus-admittance equation
  6. 6Series-branch terminal currents
  7. 7Series-branch stamp
  8. 8Impedance to admittance
  9. 9Nominal-pi line
  10. 10Fixed bus shunt
  11. 11Transformer tap convention
  12. 12Tap current referral
  13. 13Transformer branch stamp
  14. 14Matrix checks
  15. 15Example: network data
  16. 16Example: assembly workflow
  17. 17Example: admittance 1–2
  18. 18Example: stamp 1–2
  19. 19Example: admittance 1–3
  20. 20Example: add branch 1–3
  21. 21Example: add branch 2–3
  22. 22Example: symbolic Y-bus
  23. 23Example: conductance and susceptance
  24. 24Example: independent row check
  25. 25Example: zero row sum
  26. 26Practice: line charging
  27. 27Practice: charging answer
  28. 28Practice: line 2–3 outage
  29. 29Practice: outage answer
  30. 30A diagonal-only difference
  31. 31Angle reference
  32. 32Summary
Slide source

L33_power_flow_ii/L33_power_flow_ii.pdf

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EXPLORE

Experiment workspace

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Experiment direction for this lecture

Build branch stamps and inspect how charging, taps, and outages change Y-bus.

Change inputsObserve resultsExplain changes

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COMPUTE

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Input dataPythonValidation

CHECK

Practice & checks

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