Siemens SIPROTEC 7SD610 User Manual

2.17 Additional Functions
251
7SD610 Manual
C53000-G1176-C145-4
Table 2-12 Measured values of the differential protection
1)
for lines according to address (see section 2.1.4), for transformers calculated from address (see Section 2.1.4)
I
N
=S
N
/(v3 · U
N
)
2.17.5.2 Information List
2.17.6 Remote Measured Values
2.17.6.1 Function Description
During communication, the data from the other end of the protected object can also be
read out. For both devices, the currents and voltages involved as well as phase shifts
between the local and remote measured quantities can be displayed. This is especial-
ly helpful for checking the correct and coherent phase allocation and polarity at both
line ends. Furthermore, the device addresse of the other device is transmitted so that
all important data of both ends are available in a substation. All possible data are listed
in Table 2-13.
Table 2-13 Operational measured values transmitted from the other ends and compared to the local values
Measured Values % Referred to
IDiff
L1
, IDiff
L2
, IDiff
L3
Calculated differential currents of the three phases Nominal operational current
1)
IRest
L1
, IRest
L2
, IRest
L3
Calculated restraining currents of the three phases Nominal operational current
1)
IDiff
3I0
Calculated differential current of the zero sequence system Nominal operational current
1)
No. Information Type of In-
formation
Comments
7742 IDiffL1= MV IDiffL1(% Operational nominal current)
7743 IDiffL2= MV IDiffL2(% Operational nominal current)
7744 IDiffL3= MV IDiffL3(% Operational nominal current)
7745 IRestL1= MV IRestL1(% Operational nominal current)
7746 IRestL2= MV IRestL2(% Operational nominal current)
7747 IRestL3= MV IRestL3(% Operational nominal current)
7748 Diff3I0= MV Diff3I0 (Differential current 3I0)
30654 IdiffREF= MV Idiff REF(% Operational nominal current)
30655 IrestREF= MV Irest REF(% Operational nominal current)
Data Primary value
Device ADDR Device address of the remote device (absolute)
I
L1
, I
L2
, I
L3
remote Phase currents of the remote device A
I
L1
, I
L2
, I
L3
local Phase currents of the local device A
ϕ(I
L1
), ϕ(I
L2
), ϕ(I
L3
) remote Phase angles between the remote and the local phase currents
°
U
L1
, U
L2
, U
L3
remote Voltages of the remote device kV
U
L1
, U
L2
, U
L3
local Voltages of the local device kV
ϕ(U
L1
), ϕ(U
L2
) ϕ(U
L3
)
remote
Phase angles between the remote and the local voltages
°
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Siemens SIPROTEC 7SD610 Specifications

General

Brand	Siemens
Model	SIPROTEC 7SD610
Category	Relays
Language	English