GE N60 Instruction Manual page 224

5.4 SYSTEM SETUP
Depending on the applied filter, the Synchrophasors that are produced by PMUs are classified as either P (protection) or M
(Measurement) class Synchrophasors. Synchrophasors available within the UR that have no filtering applied are classified
as NONE which within the standard is classified as PRES OR UNKNOWN under the Calculation Method - ClcMth. Each
Logical Device PMU supports one MxxMMXU, MxxMSQI, PxxxMMXU , PxxxMSQI, NxxMMXU, and one NxxMSQI logical
node.
The following is a summary of LNs that are in each Logical Device (LD2 through LD5):
- PxxxMMXU1 ClcMth = P-Class (Note Vaux is mapped to Vneut of MMXU)
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- PxxxMSQI1 ClcMth = P-CLASS
- MxxMMXU1 ClcMth = M-Class (Note Vaux is mapped to Vneut of MMXU)
- MxxMSQI1 ClcMth = M-CLASS
- NxxMMXU1 ClcMth = M-Class (Note Vaux is mapped to Vneut of MMXU)
- NxxMSQI1 ClcMth = M-CLASS
- GGIO1 which contains 16 digital status indication points and 16 analog points. The Analog GGIO values are selectable
from any FlexAnalog value in the UR.
The Synchro Logical Nodes in an LD report at the same rate as set in the PMUn Basic Configuration setting. This is
reflected in the instantiation of the Data Object – SmpRate in the msvcb## of LLN0 in the LD1. SmpRate is a Read
Only Integer Status (INS).
NOTE
When the first PMU from any LD is mapped into an aggregator, the aggregator inherits the Sample Rate (SmpRate) and
IEEC C37.118 Class (P or M) of that PMU. The value of the SmpRate DO in the Report Control Block is set based on the
value of the Sample Rate in the PMU. The Class of the Dataset are mapped into the MSVID of the Dataset (see text below
for the overall name of the MSVID). If other PMUs are mapped into the same aggregator with different Sample Rates or
from different classes, then a Self-Test error (DatSetErr) is set and dataset transmission is blocked.
A setting value – MSVID – is created with a maximum input range of 56 characters (=64 less 6 for the IDCode less 2 for the
Class).
The value of MSVID in the dataset is a concatenation of the aggregator IDCode and the MSVID setting value in the format:
MSVID-AggregatorIDCode-CLASS where CLASS is P, M, or N (for None) – depending on the Class of the first PMU
included in the Aggregator.
Synchrophasor Rectangular Format and Integer data types are NOT supported in IEC 61850-90-5 (only supported
with IEEE C37.118) and not to set — GGIO1 which contains 16 digital status indication points — aggregated as a
16 bit bitstring and 16 analog points. The Analog GGIO values are selectable from any FlexAnalog value in the UR.
NOTE
For version 7.0 and later the description fields for the phasors, analog and digital channels are populated with the
16 character name field provided within the Basic Configuration menu. Additionally, the names of the 16 binary
points are implemented as numbered descriptions — d1, d2, d3, and so on. The number of descriptions are equal
to the number of bits configured in the 16 bit digital status word.
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Figure 5–32: LOGICAL NODES SUPPORTED IN EACH LOGICAL DEVICE
N60 Network Stability and Synchrophasor Measurement System
5 SETTINGS
GE Multilin