rotor flux monitoring the power of innovation · 2018-10-09 · rotor flux monitoring variances in...

ROTOR FLUX MONITOR INGVariances in the magnetic flux within a generator indicates deterioration of winding insultation. Whether a result of thermal wear, large variation on load, contamination, or other causes, the impact to efficient generation is significant. Imbalances within the rotor damages insulation, which in turn degrades the generator’s output capacity and increases vibrations, further damaging the insulation, which ultimately leads to a forced outage.

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Straightforward User Interface displays all the actionable information required to effectively manage the flux conditions on a generator. Note the Alarm and the highlighted Slot Short, both in Slot Table and the Pole Graphs.

T H E P O W E R O F I N N O VAT I O N

Cutsforth.com/RotorFlux

Cutsforth.com/RotorFlux

| T W O A N A LY S E S A R E P E R F O R M E D : ■ High-speed flux signals identify shorted

turns and severity ■ Flux waveforms and generator loads

are archived for historical trend analysis

| U S E R D E F I N E D T H R E S H O L D S ■ 50 KHz Acquisition Rate

■ Filtering

■ Detection Threshold

■ Alarm Levels - Per Coil & Total Flux

■ Easy Generator input parameters

| A U T O M AT I C C Y C L E F I N D I N G E L I M I N AT E S N E E D F O R K E Y P H A S E R

| C O N N E C T S T O M O S T S C A D A A N D H I S T O R I A N S V I A M O D B U S T C P

■ System reports flux extrema and zero crossing | C R E AT E S A G E N E R AT O R L I B R A R Y

■ Records waveforms when generator load changes by 1% or at plant defined level

■ Critical for identification of worsening shorts indexed against time and load

■ Manage the Maintenance Cycle through real-time measurements

■ Zero crossing may be used as a proxy for load

| AB IL I TY TO MONITOR UP TO TWO GENERATORS S IMULTANEOUSLY

| INTEGRATES WITH MOST COMMONLY INSTALLED FLUX PROBES

I N T R O D U C I N G C U T S F O R T H ’ S R O T O R F L U X M O N I T O R I N G S Y S T E M :

Here is a brief diagram of the Cutsforth Rotor Flux Monitoring System. You will note the key difference: specifically, the capability to compare historical performance with current performance, then further indexed against load conditions. This key difference affords the power producer the capability to better manage maintenance events, including expensive rewinds, and minimize the risk of unplanned outages.

Results to

Modbus

Combine results and

waveforms for downstream

analytics

Configuration and Status

Fi lter ing

DATA COLLECTION CONTROLLER

Archive Reference L ibrayCompare Present

and Past Signatures

Locate Extrema Spatia l ly F i l terAverage pk-pk Ampl itude

for Thresholding

MODBUS PEAKS AND ALARMS

HOST APPLICATION ON SERVER FOR

DISPLAY AND ARCHIVE

OSI PI