9.32
SEL-700G Relay
Instruction Manual
Date Code 20170814
Analyzing Events
Event Reporting
synchronism-check function performs better to cause a breaker close exactly
when the generator voltage phase angle difference equals CANGLE.
Reset the Breaker Close Time Average
Use the Access Level 2 SYN R command to reset the Breaker Close Time
Average and breaker close operations counter. The relay records the date and
time of the last reset for inclusion in the SYN report.
Generator
Autosynchronism
Report (CGSR
Command)
This report is available in SEL-700G models that support the generator
synchronism-check function. Relays with Slot
E
= 71/72/74/75/76 and
Slot
Z
= 81/85/82/86 support this function. These are the SEL-700G0,
SEL-700G1, and the SEL-700GT models.
SEL-700G Relays that are equipped with generator synchronism check trigger
the generator synchronism report when the SEL
OGIC
control equation
GSRTRG transitions from 0 to 1. The report contains 4800 samples of data,
each containing the analog and digital information shown in Table 4.97. The
resolution and number of pre-trigger data samples are defined by settings
GSRR and PRESYNC and can be set as necessary. Refer to Table 4.96 for
details on the settings.
The report captures frequency/speed matching and voltage matching during
autosynchronism. Refer to Autosynchronism on page 4.173 for a detailed
description.
The report is only available in the Compressed ASCII format and can be
viewed using the CGSR (Generator Synchronism Report) command. SEL
communications processors and Analytic Assistant take advantage of the
Compressed ASCII format. View the report by using QuickSet with the
Analytic Assistant. See Figure 4.119 for an example graphical display of a
Generator Autosynchronism Report using Analytic Assistant.
Use the GSH command (Access Level 1 and 2) to view the Generator
Synchronism Reports history. Refer to Figure 7.22 for an example command
response. Clear the history and the reports by using the GSH C or the GSH R
command from Access Level 2.
Use the GST command from Access Level 1 or 2 to trigger the Generator
Autosynchronism Report.
Summary of Contents for SEL-700G Series
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