Power systems (vp.power)

Steady-state power flow on transmission networks given as MATPOWER cases.

• Newton-Raphson in polar coordinates, fast-decoupled XB, or the linear DC model
• generator reactive limits, optionally enforced
• a sparse admittance matrix and Jacobian, factored by a sparse LU written in Viv

Checked against MATPOWER's solved cases and an independent SciPy power flow, from 9 to 2,383 buses.

Part of the distribution vipyr; it runs from a checkout of the repository. Planned on PyPI as pip install vipyr.

Functions

vp.power.contingency

N-1 contingency analysis: every branch and generator outage solved by AC power flow, with DC PTDF/LODF screening.

vp.power.cpf

The continuation power flow: the PV curve of a transfer into one bus, through the nose.

vp.power.interconnect

A generator-interconnection study: violations before and after the project, distribution factors, and the transfer limit.

vp.power.read_raw

Read a PSS/E RAW file (revisions 32 to 34) into MATPOWER's arrays.

vp.power.runpf

Solve the AC or DC power flow of a MATPOWER case: bus voltages, generator outputs and branch flows.

vp.power.short_circuit

Three-phase short-circuit currents by IEC 60909 at the buses of a case.

Examples in the gallery

• Voltage profile of the IEEE 118-bus system
• Power flow convergence and timing from 9 to 9241 buses
• An interconnection study on the IEEE 118-bus system
• The PV curve of a transfer into bus 38 of the IEEE 118-bus system