Sel SEL-421 - Synchrophasor Order in Data Stream (Voltages and Currents)

R.7.14
SEL-421 Relay Reference Manual Date Code 20111215
Synchrophasors
Settings for Synchrophasors
PHCURR selects the source current(s) for the synchrophasor data selected by
PHDATAI.
➤ PHCURR := IW uses the currents measured on the IAW, IBW,
and ICW inputs
➤ PHCURR := IX uses the currents measured on the IAX, IBX,
and ICX inputs
➤ PHCURR := COMB uses the summation of the currents
measured on the inputs: IAS = IAW + IAX, IBS = IBW + IBX,
and ICS = ICW + ICX
➤ PHCURR:= BOTH uses the currents measured on both the I_W
inputs and I_X inputs
Tab le 7.5 describes the order of synchrophasors inside the data packet.
The IWCOMP and IXCOMP settings allow correction for any steady-state
phase errors (from the current transformers or wiring characteristics). See
Synchrophasor Measurement on page R.7.6 for details on these settings.
Table 7.5 Synchrophasor Order in Data Stream (Voltages and Currents)
Synchrophasors
a
(Analog Quantity Names)
a
Synchrophasors are included in the order shown (i.e. Voltages, if selected, will always precede
currents).
Included When Global
Settings are as follows:
Polar
b
b
Polar coordinate values are sent when PHFMT := P.
Rectangular
c
c
Rectangular (real and imaginary) values are sent when PHFMT := R.
Magnitude Angle Real Imaginary
V1LPMM V1LPMA V1LPMR V1LPMI PHDATAV := V1 or ALL
VA L P M M VA L P M A VA L P M R VA L P M I
VBLPMM VBLPMA VBLPMR VBLPMI PHDATAV := ALL
VCLPMM VCLPMA VCLPMR VCLPMI
I1WPMM I1WPMA I1WPMR I1WPMI PHDATAI := I1 or ALL
AND (PHCURR := IW
or BOTH)
IAWPMM IAWPMA IAWPMR IAWPMI
IBWPMM IBWPMA IBWPMR IBWPMI PHDATAI := ALL AND
(PHCURR := IW or BOTH)
ICWPMM ICWPMA ICWPMR ICWPMI
I1XPMM I1XPMA I1XPMR I1XPMI (PHDATAI := I1 or ALL)
AND (PHCURR := IX
or BOTH)
IAXPMM IAXPMA IAXPMR IAXPMI
IBXPMM IBXPMA IBXPMR IBXPMI PHDATAI := ALL AND
(PHCURR := IX or BOTH)
ICXPMM ICXPMA ICXPMR ICXPMI
I1SPMM I1SPMA I1SPMR I1SPMI (PHDATAI := I1 or ALL)
AND PHCURR := COMB
IASPMM IASPMA IASPMR IASPMI
IBSPMM IBSPMA IBSPMR IBSPMI PHDATAI := ALL AND
PHCURR := COMB
ICSPMM ICSPMA ICSPMR ICSPMI