Arbiter Systems 1133A, Руководство по эксплуатации

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60 Configuring the Model 1133A
Figure 7.11: 8-Cycle, Raised Cosine Rejection Plot and 6-Cycle Rolloff
Figure 7.12: Selecting Digital
Channels in C37.118
PMU-3 C37.118 Ghost
PMU-3 C37.118 Ghost is a third IEEE C37.118 port configurable to any of three possibilities, plus
OFF. The data provided by these selections are as follows:
1. Once per second broadcast of the standard 1133A analog quantities (55 numbers). Floating
point (55 numbers, 238 bytes total message). Fixed configuration.
2. R1 per second, subset of PMU-1 data: Frequency, df/dt; Synchrophasor: Positive Sequence
Voltage (V1, Real and Imaginary); Analog: Total Active (W) and Reactive (VAR) Power.
At the same data rate R1 as PMU-1. Floating point (6 numbers, 42 bytes total message).
Fixed configuration.
3. R2 per second, subset of PMU-2 data: Frequency, df/dt; Synchrophasor: Positive Sequence
Voltage (V1, Real and Imaginary); Analog: Total Active (W) and Reactive (VAR) Power.
At the same data rate R2 as PMU-2. Floating point (6 numbers, 42 bytes total message).
Fixed configuration.
4. OFF.
Using both Virtual PMUs 1 and 2, plus the Ghost PMU, will still leave one virtual Ethernet
port available for PSCSV and administrative duties. There is only one Ghost PMU, i.e. you cannot
have more than one of these selections active at one time. C37.118 does not allow data streams at
different reporting rates to be merged.
7.8.4 Setup Example – Ethernet
The following example should illustrate how to set up the 1133A using PSCSV for specific
synchrophasor data type, using the data found in Figure 7.10. Before actually setting up the
synchrophasor window, make sure to first configure the Nominal Frequency on the form.