9440300990 Rev J
183
DECS-250
Testing
Testing
Testing of the DECS-250’s regulation and optional power system stabilizer (style XPXXXXX) performance
is possible through the integrated analysis tools of BESTCOMS
Plus
®
.
Real-Time Metering Analysis
BESTCOMSPlus Navigation Path:
Metering Explorer, Analysis
HMI Navigation Path:
Analysis functions are not available through front panel HMI.
Proper voltage regulator performance is critical to power system stabilizer performance. Step response
measurements of the voltage regulator should be performed to confirm the AVR gain and other critical
parameters. A transfer function measurement between terminal voltage reference and terminal voltage
should be performed with the machine operating at very low load. This test provides an indirect
measurement of the PSS phase requirement. As long as the machine is operating at very low load, the
terminal voltage modulation does not produce significant speed and power changes.
The BESTCOMS
Plus
Real-Time Metering Analysis screen can be used to perform and monitor on-line
AVR and PSS testing. Six plots of user-selected data can be generated and the logged data can be
stored in a file for later examination. BESTCOMS
Plus
must be in
Live Mode
in order to start plotting. Live
Mode is found under the
Options
menu on the lower menu bar. RTM Analysis screen controls and
indications are illustrated in Figure 158.
Figure 158. RTM Analysis Screen
Содержание DECS-250
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Страница 20: ...4 9440300990 Rev J Introduction DECS 250 ...
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Страница 32: ...16 9440300990 Rev J Voltage and Current Sensing DECS 250 ...
Страница 40: ...24 9440300990 Rev J Synchronizer DECS 250 ...
Страница 52: ...36 9440300990 Rev J Auxiliary Control DECS 250 ...
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Страница 108: ...92 9440300990 Rev J Power System Stabilizer DECS 250 Figure 85 PSS Function Blocks and Software Switches ...
Страница 114: ...98 9440300990 Rev J Power System Stabilizer DECS 250 Figure 96 PSS Parameter Settings ...
Страница 124: ...108 9440300990 Rev J Stability Tuning DECS 250 ...
Страница 126: ...110 9440300990 Rev J Mounting DECS 250 Figure 103 Overall and Projection Mounting Dimensions ...
Страница 127: ...9440300990 Rev J 111 DECS 250 Mounting Figure 104 DECS 250 Escutcheon Plate Dimensions ...
Страница 128: ...112 9440300990 Rev J Mounting DECS 250 Figure 105 Panel Cutting and Drilling Dimensions for DECS 250 Panel Mounting ...
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Страница 210: ...194 9440300990 Rev J CAN Communication DECS 250 ...
Страница 304: ...288 9440300990 Rev J Maintenance DECS 250 ...
Страница 316: ...300 9440300990 Rev J Specifications DECS 250 ...
Страница 334: ...318 9440300990 Rev J Analog Expansion Module DECS 250 ...
Страница 341: ...9440300990 Rev J 325 DECS 250 Contact Expansion Module Figure 188 CEM 2020 Input Contact and Output Contact Terminals ...
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