Compare Against Defaults - GE G30 Instruction Manual

COMPARE SETTINGS
Some of the IEC 61850 settings use floating point data, which guarantees accurate representation of real numbers up to
seven digits. Numbers with more than seven digits are approximated within a certain precision. This can result in
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differences between what is entered and what is saved, and for example results in differences shown on a settings
comparison report.
When comparing two settings files with the graphical front panel, all graphical front panel features are compared except
for the single-line diagrams.

11.7.1 Compare against defaults

To compare settings against default values:
1. Right-click the device in the Offline Window area and select Compare Settings With Defaults. The file generates and
the number of differences displays.
2. To save the report, click File > Save As, select the TXT, PDF, or CSV format from the drop-down list, and enter a name
for the file.
In the figure, the first entry (red) is from the device, while the second (green) is the default value.
11.7.2 Compare two devices
Preferences are set under File > Preferences as follows:
• Comparison Report: Sequential File 1, File 2 Layout — When disabled (default), the report shows only what differs, as
shown in the previous figure. When enabled, the report indicates differences by device.
Figure 11-8: Device settings compared between two devices, displayed sequentially
There are two ways to compare devices: devices in the Offline area or between Online and Offline devices.
To compare settings of two devices in the Offline Window area:
1. Right-click a first device in the Offline Window area and select Compare Two Devices.
2. In the window that opens, select a second device and click the Receive button. The file generates and the number of
differences displays.
3. To save the report, click File > Save As, select the TXT, PDF, or CSV format from the drop-down list, and enter a name
for the file.
To compare settings between Online and Offline devices:
1. Right-click a device in the Online Window area and select Compare with Device.
11-8
Figure 11-7: Device settings compared with default values
CHAPTER 11: MAINTENANCE
G30 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL