John G. Buchan PhD.pdf - OpenAIR @ RGU - Robert Gordon ...

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%I"ou,., Vinfrequency Response of ! chine Winding1114411411i! -! ---- - -- -_ ;,t r- -MINE-. i. ý :Lo-'arei=ý.1... _- iýýý--_ý,i--_i,=ý: -ýi'ý'ý"i-ýWWI!dNAU-ý---D. S=r"- _,., -týý.. ý_UtUIW__-ý--_ýýII. ,ar. ýr- li -lý! Iý_-L!Iýý0ý N1111 -1-334fufl iýlýfllifi4; lllý{ IffilillPý__ __ il, ýiýý ý.. _;ýýýrfýýºý+ýüütL"131! -ulýüýfýýMlluilltiNý111ýýýfTHilllllt[IilIHAiPNflIllL'HllllUlll ý111LL'Ll'.... -. 4_ N_Nfrequency.... 8zNFigure 2.5.1.1 -Frequency Response of Phase Winding whenOpen-Circuit Between First and Second Coilsr. ,Page 114
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OpenAIR@RGUThe Open Access Institut
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DECLARATIONI hereby declare that th
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CHAPTER FOUR DEVELOPMENT AND PERFOR
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My help comes from the Lord, whomad
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CHAPTER ONEINTRODUCTION
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motors ratings were not reported ).
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surfaces from spark erosion which i
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Another source of rotor bar overhea
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TurnInsulationConductorFigure 1.4.1
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Figure 1.5.1- Failure Modes in High
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insulation swells .Thermal cycling
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Abrasionpoints .Figure 1.5.2 -Endwi
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pole closure will result in a steep
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Internal discharges take place in s
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The voltage Vc, developed across th
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, uJoules), have shown that the cry
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discharges of this type damage both
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1.6 High Voltage Insulation Diagnos
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V0IRsdParallelcircuitSeries circuit
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At bridge balance position the rati
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circuit effect partial discharges h
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idge is balanced by adjusting the v
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observed as a ripple effect distort
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generalisations are discussed in th
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When a discharge takes place in the
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obtain the balance condition. Any d
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I-rFigure 1.6.2.3-Passive Resonant
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that of a calibration pulse .The ca
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Figure 1.6.2.7-Point to Hemi-sphere
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Thyris for ControllerFluorescent Li
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ejects unwanted signals which are r
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The first to recognise the importan
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Pulse HeightDistribution100-I22k:Po
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High intensity slot discharge, as o
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RYBFrequencyMeter /SpectrumAnalyser
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signal level have been detected by
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primary, (the coil conductor), and
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CHAPTER TWODISCHARGE PULSE PROPAGAT
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velocities and attenuation .Tests w
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The coils are typical of those used
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Ri-ZO N Zc-i-Figure 2.2.2 - Star co
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aglePulseGeneratorTo C. R. T. --Dis
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It is apparent from the waveform th
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a- conductor heightb- interturn ins
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v=c. ( 1+ de/ds)(, /-E-r + de/ds)Th
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time through the coil with the exte
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are manifested in the observed coil
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which , for the values of L and C,
Page 194: In the study of steep fronted wave
Page 198: RonEMEME ý`®um®olp-PRI_wanommen-
Page 202: Velocity of propagation based on ti
Page 206: ecording the transit time of a sinu
Page 210: li ad/volfnauenryResponse of P6chne
Page 214: L is the self inductance of the win
Page 218: VouVinFrequency Response of &chine
Page 222: wavelength is equal to the length o
Page 226: Source ResistanceWindingInductanceL
Page 230: frequency of 113.5 kHz , which corr
Page 234: 2 VJdivo, s u/divD, 5, usec/divFigu
Page 238: 2 V/div0,5 Vld1V0,5, usec/di vFigur
Page 242: ýýýannýýýýý! M®®zz®awa 9
Page 248: The gradual rise in the amplitude o
Page 252: VouVinFrequency Response of thchine
Page 256: ýýýýýý.. ýsaýýýýýýý/1
Page 260: PulseGeneratorPulseShapingSA9pfWind
Page 264: characteristic .The high frequency
Page 268: Similar behaviour is observed when
Page 272: instruments such as the ERA dischar
Page 276: Wideband detection is much less aff
Page 280: 3.1 Partial Discharge CouplersA par
Page 284: fixed relationship exists between t
Page 288: ýFigure 3.3.1- Rogowski CoilImt tl
Page 292: This results in an expression for v
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0.5JUsec/cmInputpulse2 V/cmRogowski
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i-ý--Cn--- - --------._L/eNasesign
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vm(t)Figure 3.4.3 -Response of Rogo
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thistype of pulse.Experiments were
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If the condition when T2 i T, is ex
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3.6.2 Charge Measurement with the R
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Je(t)....... ........ 0............
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the self inductance of the toroid i
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Vm = Ip. lZ(4j)l= Ip. R/N(1+ Wo /ý
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- -- -ýIVm (tlr CSt__1ParallelCirc
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The transient solution to the equat
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Vm(tlFigure 3.8.1.1-Parallel Circui
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3.9 Charge Measurement with Narrowb
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CHAPTER FOURDEVELOPMENT AND PERFORM
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Figure 4.1.1- Discharge Pulse Train
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given by ,Y-1- =(L-2dý) .....(4.6)
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SGNIT1 i40-tSGN2,i2140-fFigure 4.1.
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aaaaaaaaaaaaaaMachine Winding3 -Pha
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(rifloco0CBooaa000O®m wM MZI ®®
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The fibre-optic transmitter and the
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delay lines are examined in the fol
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An advantage of this type of transm
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isetime,(hence fall time ), of the
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The implementation of this principl
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comparator .In doing so ,hysteresis
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4.2.3.4 Amplitude and Rise Time Wal
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until all memory positions, (channe
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4 msec---IE--AddressBusMCSStartI Ad
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4.3 Results from Correlation Experi
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Location Scan StatorofWindingcl c2
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positions of the remaining peaks on
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Delay difference T increased by tc1
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Location Scan of Stator Winding180,
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Location Scan of Stator Winding1.c2
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In this second experiment ,the wind
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Pulse Injection Location Peak Locat
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Location Scan of Stator Winding100-
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Location Soon of Stator Minding100-
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Figure 4.4.5.1- Simultaneous Pulse
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Location Scan of Stator Winding109-
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Location Scan of Stator Winding108.
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Similar to the previous results the
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1TrTIIIITH5 V/div! ýmiiý. ýýý
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Location-ScanofStatorWinding1919L..
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Location'ScanofStatorwindingISO-0 2
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Pulse 0[AFGenerator 10ýr;PulseOýG
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Location Scan of Stator Winding109L
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Location Scan of Stator Windinglea_
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Location Scan of Stator WindingISO-
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Location Scan of Stator Minding,iea
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4.4.7 Injection of Three Independen
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LocationScanof Stator WindingIM-(b)
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Although a shift in the discharge l
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4.4.8 Injection of Six Independent
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From these results it can be seen t
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capacitance of the spark gap .Assum
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Couplingcapoci/oriala-Spark gapH. V
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across the spark gap , as shown in
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LocotionSoon ofStatorMinding182L,IA
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LoootionSoonof Stator Winding1®..a
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The observed location for discharge
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interference.In the second test,the
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a cumulative pulse count at channel
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IBO. r'c2, c3, c4Location Scan of S
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5.1 Review of Previous Investigatio
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The solution to these equations was
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in the adjacent slot (through the e
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A comprehensive study was carried o
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Oraee & McLaren [101] followed the
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a complex , electromagnetic , finit
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mode -(transverse electromagnetic m
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EndwindingJunction 2Junction 3SlotJ
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5.3.1. Derivation of Scatter Matrix
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inrvol" [yo 00"ýIv2v3I0 yiyni2 y2
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1000000 -11000000 -11000000-1100000
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C9111 1n11111-1 t.ý-4T f; ' Co, KC
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5.4 Computer AnalysisA suite of FOR
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Therefore, by computing the respons
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STARTSection 1Set . time andinitial
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STARTFigure 5.4.3.5 - Flow Diagram
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system for conductors in the coil m
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variables xi and hn are the impulse
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JUNCTION 4 JUNCTION 3JUNCTION 0JUNC
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The only difference is the inclusio
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CO ..............CCýjýCCsC4C4" cj
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Cl [3.....C2 C3CCý3 ý1CS ....ýyC
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6.1 ConclusionsThe work presented i
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a discharge source to the. -winding
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Tests were performed using a single
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1 Thomson, W. T., Deans , N. D., Le
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26 Gallagher, T. J., -andePearmain,
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54 Karkkainen,S. : 'Internal partia
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77 James, R. E., Trick, - F. E., Ph
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104 Weeks, W. T.: 'Multi-conductor
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C ###########*#*#*#*#***#####**#*##
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CC ########*#######################
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c ****###******#****#**#***##*####*
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CC##**#***#*#***#####**######*#####
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ccccc# SEARCH FOR THE NEXT JUNCTION
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CC ##########*#**###*############*#
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C m. ý.C #*#***#*********##*#*#*##
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NUM-0DO 1000 J=1rNFILEWRITE(5.1001)
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MOOAAR TO PRINT SCATTER MATRICIS.EN
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A TECHNIQUE FOR THE LOCATION OF PAR
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Each coil behaves as a multiconduct
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- --T, wýIw. S. - ýfSll- tlýdl.
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