e2nIEE / pandapower

Convenient Power System Modelling and Analysis based on PYPOWER and pandas
https://www.pandapower.org
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Idea/Feature Request: "Zero impedance" power flow #1381

Open bergkvist opened 3 years ago

bergkvist commented 3 years ago

How it would work:

  1. Ignore any impedance in lines/transformers
  2. Turn cycles in the network graph into single buses by merging all buses in each cycle.
  3. Calculate the flow of active and reactive power by simply summing up p_mw and q_mvar in all the nodes as your traverse the graph from the loads up to the slack bus/ext_grid.
  4. It might be possible to get an estimate for current by dividing the power by vn_kv (reference voltage).
  5. We don't calculate bus voltages.

Advantages:

Shortcomings:

SteffenMeinecke commented 2 years ago

Hi @bergkvist, thanks for another great idea. Just some comments for discussion:

What is the reason for diverging power flows?

Is it the complexity caused by reactive power and voltages? -> then a dc power flow might be already a sufficient simplification Is it the complexity of a large and meshed grid? Then this proposal is not the solution. Is it a by far radial net but with ill-conditioned r/x values? Then your proposal could be helpful.