DC Power flow

Warning

To run an AC power flow with DC power flow initialization, use the AC power flow with init=”dc”.

pandapower uses PYPOWER to solve the DC power flow problem:

alternate Text
pandapower.run.rundcpp(net, trafo_model='t', trafo_loading='current', recycle=None, check_connectivity=True, switch_rx_ratio=2, trafo3w_losses='hv', **kwargs)

Runs PANDAPOWER DC Flow

Parameters:

  • network (**net** - The pandapower format)

  • **trafo_model** (str, "t")

  • transformer (pandapower provides two equivalent circuit models for the)

  • model. (- "t" - transformer is modeled as equivalent with the T-model. This is consistent with PowerFactory and is also more accurate than the PI-model. We recommend using this transformer)

  • Sincal (- "pi" - transformer is modeled as equivalent PI-model. This is consistent with)

  • T-model. (but the method is questionable since the transformer is physically T-shaped. We therefore recommend the use of the)

  • **trafo_loading** (str, "current")

  • transformer. (- "power" - transformer loading is given as ratio of apparent power flow to the rated apparent power of the)

  • setting (- "current"- transformer loading is given as ratio of current flow and rated current of the transformer. This is the recommended)

  • current. (since thermal as well as magnetic effects in the transformer depend on the)

  • transformer.

  • **check_connectivity** (bool, False)

  • true (If)

  • perfomed. (an extra connectivity test based on SciPy Compressed Sparse Graph Routines is)

  • buses (If check finds unsupplied)

  • matrix (they are put out of service in the PYPOWER)

  • **switch_rx_ratio** (float, 2)

  • zero (whose impedance z_ohm is not)

  • to (buses connected by a closed bus-bus switch are fused)

  • switches (model an ideal bus. Closed bus-bus)

  • zero

  • modelled (are)

  • switch_rx_ratio. (as branches with resistance and reactance according to net.switch.z_ohm and)

  • **trafo3w_losses** (str, "hv")

  • PYPOWER.runpf (**kwargs** - options to use for)

Note

If you are interested in the pypower casefile that pandapower is using for power flow, you can find it in net[“_ppc”]. However all necessary information is written into the pandapower format net, so the pandapower user should not usually have to deal with pypower.