master:tvekta parametersPSCAD Phase Locked Loop

Every parameter of the PSCAD Phase Locked Loop (master:tvekta): 14 names, with the unit, the default and the meaning PSCAD gives each one. Copy a name into parameters().

What master:tvekta is

Phase Locked Loop (Phase-Locked Loop), a component of PSCAD's Master Library, filed under meters and output.

Definition
master:tvekta
PSCAD name
Phase Locked Loop
Category
Meters and output
Parameters
14, in 2 groups; 4 carry a unit
Read from
PSCAD 5.0.0, 2026-11-07

Read and write master:tvekta in Python

import mhi.pscad

pscad = mhi.pscad.connect()              # the PSCAD that is open; launch() starts one
project = pscad.project("my_case")       # a case loaded in the workspace

for comp in project.find_all("master:tvekta"):   # the exact definition, namespace first
    params = comp.parameters()           # every parameter, as PSCAD holds it
    print(str(params["Fbas"]))           # Base Frequency, in Hz

comp = project.find_all("master:tvekta")[0]
comp.parameters(Fbas="120 [Hz]")         # a value that carries a unit is written with it
  • A parameter is named exactly as in the table, letter case included: parameters() gives every one of them in a dictionary, and a name the component does not have is refused.
  • A value that carries a unit comes back as a number whose unit is only in its text, so read it as text first (str(...)) or the unit is lost. PSCAD keeps a written unit as it is given: "2500 [mohm]" stays in mohm.
  • A Choice is read and written as its symbol (the capitals in "Written as"), not as the words PSCAD shows in the dialog.
  • find_all() takes the exact definition only. A wildcard or a bare name without master: comes back empty; the Builder's px_find walks the pages for those.

The Builder's runtime does the same with the unit handled for you: px_get(comp, "Fbas") and px_set(...), which also records the old value so the case is put back at the end. Getting started shows them.

Internal Output Variables

ParameterUnitDefaultDescription
ErrText··Name for Error
FNameText··Name for Tracked Frequency

Configuration

ParameterUnitDefaultDescription
FbasRealHz60.0Base FrequencyAt least 0
GiReal·900.0Integral GainAt least 0
GpReal·50.0Proportional GainAt least 0
HiLimitRealpu1.2Upper Tracking LimitRange 1 to 10
LoLimitRealpu0.8Lower Tracking LimitRange 0 to 1
ModeChoice·N_1Number of OutputsWritten as N_1 (n=1), N_6 (n=6), N_12 (n=12)
NameText··Name for IdentificationEnter a name for identification
PModeChoice·DEGREESAngle Input/Output ModeSelect radians or degreesWritten as RADIANS (Radians), DEGREES (Degrees)
THOFFReal·0.0Offset Angle to PLL (rad/deg as per Pmode)Range -360 to 360
TRELReal·0.05PLL Shadows err for t .LT. TRELRange 0 to 360
VbasRealV1.0Base VoltsAt least 0
dleadChoice·LEADDelta Ramps Lead or Lag Wye RampsWritten as LEAD (Lead), LAG (Lag)Used when Mode==2

Related

← master:phasediff Phase Difference · master:pss Power System Stabilizer →