德国赛巴TDR实测海底电力电缆波形

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1、Test Instruments Test Instruments&Diagnosis Systems Diagnosis Systems forfor KOREAKOREA2 2SebaKMT Product rangeSebaKMT Product rangeSeba KMT has a wide range of cable fault location,test-and diagnosis tools and system,which could be of interest:TDR(Time Domain Reflectometers):Teleflex VX-Installed i

2、n a test van OR-Portable solution(c)SebaKMT,all rights reserved(c)SebaKMT,all rights reserved3HV DC-Cable 200 kmUnder sea-cable with a few jointsCable with numerous jointsHV-Cabel 120mm(c)SebaKMT,all rights reserved4HV DC Cable-200 km:TDR Teleflex VXSea Cable open endSea Cable with Joints(c)SebaKMT,

3、all rights reserved5HV DC-Cable 200 km:TDR-JointsOver land cablewith joints Teleflex VX,(c)SebaKMT 2012,all rights reserved6The Teleflex VX in 19”FormatTeleflex VX,(c)SebaKMT 2012,all rights reserved7ProRangeDistance depending amplitude de-attenuationas known from our Telecom units.Important:This is

4、 not aramp gain,but anexponential de-attenuation!De-attenuation=offDe-attenuation=onCable:4 x 1km=4 km;Type RG58 with open endWith activated ProRange function,the end ist much better visibleTeleflex VX,(c)SebaKMT 2012,all rights reserved8Adjustable trace thickness The systems become better,more accu

5、rate and have a higher resolutionProblem:The trace shows too many details and these details canbe confusing.Now it is possible to show the trace with a thicker line,Same for printing The trace thickness is adjustable from 1 to 9 pixels.Teleflex VX,(c)SebaKMT 2012,all rights reserved919”Installation

6、versions118304460 Teleflex VX-Classic Teleflex VX in 19“design as system integration version for Classic and other comparable fault location systems.(For new Systems and retrofit of existing systems)Inclusive adaptation set to the Classic System15 SXGA TFT Display with CCFL-backlight,300cd/m11830824

7、1Teleflex VX-R 30 Teleflex VX in 19“design as system integration version for R 30 and other comparable fault location systems(For new Systems and retrofit of existing systems)Inclusive adaptation set to the R 30 System 15 SXGA TFT Display with CCFL-backlight,300cd/mTeleflex VX,(c)SebaKMT 2012,all ri

8、ghts reserved10Teleflex VX Portable 118308242TFX VX PTeleflex VX P portable with caseAs Stand Alone Version for the direct reflection measurement or as combination with other fault location equipment.15 SXGA TFT Display with CCFL-backlight,300cd/mRelease date:Autumn 2012Teleflex VX,(c)SebaKMT 2012,a

9、ll rights reserved11DataParameterTeleflexMXTeleflexVXMeasuring range 80m/s50m 160km20m 1280kmPulse amplitude Not adjustable max.55VAdjustable from 30 160V0,1m by 80m/s0,1m 80m/s,1,0 cm V/2 continious duty DC Test,Internal ARM Filter,Decay and Current Coupler(ICE),Pulsed Sheath Fault Mode 0.5 kV,Shor

10、t Term Burning(fault conditioning),Test Van mounted or rugged frame with wheels,Reflectometer Teleflex T 30-E with One-Button-Operation,Operator Guiding SoftwareSurgeflex 32 with 1750(3500)Joules(c)SebaKMT,all rights reserved28HV-Module SPG 32typically equipped with TDR Teleflex T30 E(incl.Decay and

11、 Impulse current method)DC Testing 0.32 kV DCSurging0 4 kV;1200 J0 8 kV;1750 J0.16 kV;1750 J 0.32 kV;1750 J Surge rate3.10 s,Single pulseBurning0.32 kV;160 mASheath fault locating0.5 kV;160 mA Physical Data of SystemConnecting cable6 m(standard)Mains supply230 V;50/60 Hz,2 kVADimensions(W x H x D)80

12、0 x 1280 x 800 mmWeight135 kg Portable(142 kg incl.4 kV Option)Surgeflex 32:Technical Data(c)SebaKMT,all rights reserved29One-Button-Operation10.4“VGA Colour TFT HiBrite-Fully Sun readable DisplayQuick Steps-Mode with automatic Test ProceduresStep-by-Step Easy Mode for Operator Guiding Software with

13、 Online-HelpExpert-Mode with access to all ParametersAutomatic Fault Recognition and Distance IndicationAutomatic Cable End RecognitionHigh Resolution due to special Pulse Shape Display of 3 Traces(color separated)ARM-ModeImpulse Current MethodDecay MethodTeleflex T 30-E(c)SebaKMT,all rights reserve

14、d30Range10 m 50 km(Transient Methods 20 m 100 km)Pulse width35 ns to 4 sSampling rate200 MHzAccuracy 0.1%of rangeDisplay10.4“VGA colour TFT displayV/250 m/s.150 m/sModesDirect L1,L2Comparison L1,L2,Memory Difference L1,L2,Memory ARM-ModeImpulse Current Mode,Decay Mode Memory100 TracesInterfaceUSB fo

15、r PC and printerOperating temperature-15C.50C Dimensions(W x H x D)360 x 160 x 270 mmSupplyInternal NiMh battery,110/250 V Weight6 kg Teleflex T 30-E:Technical Data(c)SebaKMT,all rights reserved31HV Operation from one single unit only(c)SebaKMT,all rights reserved32Fault location up to 400 kVR 30 th

16、e Test Van system for any application DC Testing up to 110 kV Options up to 150 kV and 400 kVFault location in all known technologies ARM and ICE up to 50 kV Decay 110 kV Optional Decay Method up to 400 kVFully integrated safety conceptComparably low weight and volumeLow power consumption R 30 the m

17、ost powerful Fault Location System(c)SebaKMT,all rights reserved33digiPHONE+System The digiPHONE+System consists of:the Receiverthe Sensorand the Headset(c)SebaKMT,all rights reserved34Careful handling,night work and filtering is history now:Today we have a new definition of silenceThe innovation in

18、 fault pinpointing Several new,innovative methods of the digiPHONE+will ensure the silenceThe technology that lets you hear the fault only the fault!No traffic!No high heels!No talking!No noise!You hear only what you want to hear,-“THE”Fault!Your ears will like it!digiPHONE+System(c)SebaKMT,all righ

19、ts reserved35Features/Benefits Highest acoustic quality and external noise immunity Automatic Volume Mute with Bang protection“Bright,sun capable display Easiest Operation Ergonomical,adjustable telescopic handle Distance measurement in Milli seconds or meters Selectable volume limitation to 84 dB(A

20、)Easy tracing with left right indication Fault direction indication Automatic adjustment for magnetic and acoustic channel Weather proof IP65 Sensor,better IP54 receiver High ground stability of the sensor up to 45 New,high performance connectors!(c)SebaKMT,all rights reserved36SensorAdjustable hand

21、leExchangeable tipsActive Elektronic the evaluation happens completely in the sensor!Housing:Dual shell die casting with telescopic handleSoft rubber rims for acoustic shieldingDimensions:Diameter 230mm(at the outer lip)Height:140mm Handle length:450 750mmWeight:Sensor mit Teleskopstab ca.2 kgDynami

22、c range:acoustic channel 110dBDynamic range:magnetic channel 110dBFrequency range:100.1500Hz4 Filter settings:OFF100 1500HzLow pass100 400HzBand pass300 500HzHigh pass700 1500Hz(c)SebaKMT,all rights reserved37ReceiverJogdialON/OFFManual Mute KeyThe receiver is only for the display of thedata generat

23、ed from the sensor and thesignal processing of the signals forthe head set.Dimensions(with rubber frame):65 mm x 225 mm x 100mm(H x W x D)Weight:app.1kg(incl.Batteries)Supply:6 pieces Mignon cellsTyp IEC R6(Alkali-Mangan)Operation time:Mignon cells with 2500 mAh capacity:10 Std.Display:Color TFT-320

24、 x240PixelAdjustmentSelectable limitation to 84 dB(A),VolumeAkustic Gain:120dB(c)SebaKMT,all rights reserved38TracingA green cable symbol beneath the sensor symbol in the center of the digiPHONE+display shows the side position of the sensor in relation to the cable trace.This ensures automatically,t

25、hat the user remains with the sensor directly on top of the cable,which makes the fault location more accurate but also easier.Weak fault are much faster detected and located.A cross measurement is not required,since the system is positioned automatically in theY-axis on top of the cable(c)SebaKMT,a

26、ll rights reserved39The CompassThe Compass“function of the digiPHONE+recognises from the data,especially from the difference time measurement,if the user is movingtowards the fault.This is indicated by the arrow in the display.The user follows the arrow and ppoaches automatically the fault positionI

27、f the digiPHONE+detects an increase of the difference time,it means,that the user has passed the fault already.In this case a bent arrow indicates this and requests the user to move backward.Before the fault:The new value islower than the olddifference valueAfter the fault:The new value ishigher tha

28、n theold difference value(c)SebaKMT,all rights reserved(c)SebaKMT,all rights reserved(c)SebaKMT,all rights reserved41Example from Greece(c)SebaKMT,all rights reserved42Bad workmanship as standard problemMore and more units are installed by un-experienced cheap service companies worldwide.MFM-10 Shea

29、th fault locator required Example43MFM 10(c)SebaKMT,all rights reserved44Die Optical appearanceClear front end with few operating elelmentsAlso in the new MFM 10 the easygo priciple with jogdial and according optical feedback of the jogdial motion is realisedIntuitive easiest operation with a large

30、displayLess connection cables Solid Pelicase(c)SebaKMT,all rights reserved45MFM 10-FeaturesTest voltage up to 10kV DC(bipolar!)Up to 750mA continuous current driving capability(depending on output voltage(30mA at 10kV)within certain limits useful as burn unit!Flicker as well as ignitions of faults d

31、uring testing are recognized and displayed Wide range mains supply 88 to 264 VFault locating using the well known voltage drop methodimproved accuracy due to low-noise preamplifierLogging is done by EasyprotEasiest,menu guided operationFor prelocation the MFM 10 checks for wrong connections and info

32、rms the operator accordingly.EasyGo rotary knob supplemented by a touch screen(c)SebaKMT,all rights reserved46The HandlingEasy,menu guided operation with rotary encoder and touch screenWeight reduction of more than 30%compared to the MFM 5-1 by new technologiesOnly one single HV connection cable,the

33、 permits testing,prelocation and pinpointing without reconnectingThe test of all connected test leady avoids false measurements and accelerates the complete procedureThe monitoring during the test,especially during the voltage ramp up phase detects short time voltage or current changes,which might i

34、ndicate a fault and displays these after the test to the operator.By this way,also multiple faults can be detected without a permanent observation of the display.Pelicase with Trolley for easiest transportability(c)SebaKMT,all rights reserved47The operational speed-ConclusionA complete prelocation i

35、s just 15 seconds Easiest operationgOnly one HV connection cableBattery operation for at least 2 hoursAll of these features permit a very fast test and measurementCable manufacturers are more and more interested in checking the quality of their contractor companies doing the installation of the cabl

36、es.Our new MFM-10 is the definitely a great tool to do this.(c)SebaKMT,all rights reserved48Data(c)SebaKMT,all rights reservedESG NT Earth fault locator50The new ESG NT51Replacement of the ESG 80 A modern MFM 10 requires also a modern pinpointing technologyWith the new ESG NT,many requirements from

37、the field and sales were realized-Automatic zero adjustment-Automatic detection of the pulse rate-Easy handling without permanent adjustment-Higher sensitivity-Less mix-up by clear color codingEarth Rods-Better handling-Safer by insulated construction-More force for the insertion into the ground52Th

38、e easy measurementTarget was most close orientation on the conventional pointer instrument Quasi analogue display with the normal conventional display History Display,the response of up to 7 pulses(ca.15 seconds)is displayed53The measurement procedureAs voltage gradients induced by the current flowi

39、ng back from the fault position exist around the earthing point of the generator,the measure might be elevated(pos.1)indicates the direction of the fault position at this point.At half-way point between the generator and the fault position,the signal strength reaches a minimum(pos.2)signal strength

40、increases again.The maximum signal strength is measured when one of the earth spikes is directly above the fault.If the fault is exactly between the two ear the indicator unit does not display a reading.If the fault position is passed by,the polarity changes(pos.5)indicator unit points to the other

41、direction.54DisplayMessbildschirm MenbildschirmeMeasuring Display Menue Display55DisplayBargraph for actual Value displayactualValueZoom LevelActive FunctionsBattery Status56FeaturesHigher sensitivity Measuring range 0,01mV200VAutomatic adaptation to the voltageSuppression of external disturbances(5

42、0/60Hz,16 Hz,100/120Hz)Elimination of DC influencesAutomatic zero adjustmentAutomatic detection of the pulse rateEasier handling without permanent adjustmentMechanically strong and electrically safe construction of the earth rodsDisplay unit IP 5457The Earth Rod conceptCable holdersDividable RodsIso

43、lated upper partSolid tipsColor codingUnique SebaKMT design58The Transport case59The vehicle mountingAs for the digiPHONE+the ESG NT has an own vehicle holder.Generally,we offer either the case or the vehicle holder.There is no objection to offer both60Scope of DeliveryEarth fault probe ESG NT1 x Di

44、splay ESG-NT1183059332 x Earth rods ESG-NT1183066921 x Test lead 2m red 8100031811 x Test lead 2m black8100031801 x Manual ESG NT1 x Transport Bag1183029781 x Insert transport bag ESG11830609261AvailabilityAvailable from May 2012Versions:ESG NTCombi unit with digiPHONE+6262SebaKMT Product rangeSebaK

45、MT Product range4.VLF(Very Low Frequency)CR(Cosine Rectangular)Cable Testing systems:Most powerful testing approach,in particular for(very)long cables Wave form similar to 50 Hz power frequency:Strong increase during zero-crossing Fully automatic,easy to use system Test method according to internati

46、onal standards(c)SebaKMT,all rights reserved(c)SebaKMT,all rights reserved63Products VLF CR technology Portable solutions IVLF CR-28(899005936)4.6 F 28 kV7.0 F 18 kV11.0 F 12 kVVLF CR-40-B(899004500)2.2 F 40 kV2.5 F 35 kV5.0 F 18 kVVLF CR-60-B(899007186)VLF CR-60-B-OFFS(890025374)0,8F 60 kV 1,7F 35

47、kV 3,0F 18 kVVLF CR-60-P(899007187)VLF very low frequencyCR Cosine RectangleBBasisPPlus(symmetrical)PZPrf-Zusatz(test add on)CENCentrixOFFS Offshore(grouted HV output line)(c)SebaKMT,all rights reserved64Products VLF CR technology Portable solutions IIVLF CR-40-P(899004501)VLF CR-40-P-PZ-CEN(8900227

48、41)4,4 F 40 kV5,0 F 35 kV10,0 F 18 kVVLF CR-60-P-OFFS(890025376)VLF CR-60-P-PZ-CEN(890022745)1,6F 60 kV 3,0F 35 kV 5,5F 18 kVVLF very low frequencyCR Cosine RectangleBBasisPPlus(symmetrical)PZPrf-Zusatz(test add on)CEN CentrixOFFS Offshore(grouted HV output line)(c)SebaKMT,all rights reserved65Produ

49、cts VLF CR technology Test van solutions IVLF CR-54-PZ-CEN1(890002585)VLF CR-54-PZ-CEN3(890003040)VLF CR-54-PZ-CLASSIC(893016159)VLF CR-54-PZ-R30(892473488)5,0 F 54 kV8,0 F 36 kV21,0 F 18 kVVLF CR-80-B(890012125)VLF CR-80-B-PZ-CEN(890012123)2,0 F 80 kV(45 kV)3,0 F 60 kV(36 kV)4,5 F 40 kV4,8 F 36 kV9

50、,9 F 20 kV(c)SebaKMT,all rights reserved66Products VLF CR technology Test van solutions IIVLF CR-60-HP(890022222)6,5 F 60 kV10,3 F 38 kVVLF CR-60-25F(890025800)VLF CR-60-25F trailer(110000000)25,0 F 60 kVHP:High Power(6,5 F-symmetrical)25F:Con Ed version(symmetrical)VLF CR-80-P(890012124)VLF CR-80-P

51、-PZ-CEN(890012122)2,5 F 80 kV4,5 F 60 kV7,0 F 40 kV7,7 F 36 kV14 F 20 kV 67Product Overview VLF Sinus technologyVLF Sinus 34 kV:Test voltage:34 kV Test capacity 0,1Hz:0,6 F Test capacity 0,01Hz:3,5 F Test frequency:0.1Hz(0.1Hz 0.01Hz)(automatic frequency adaption)NOTE:The VLF Sinus 34 has been desig

52、ned for the IEEE market for maintenancetesting cables up to 25 kV.68 0,7 F 0.1 Hz,30 kVpeak(20 kVRMS)5,0F 0.01 Hz,30 kVpeak(20 kVRMS)Load-detection R and C Breakdown recognition Manual and automatic frequency-adaption F-Ohm Test modes:Sinus,DC+,DC-,rectangular wave,pulsed DC voltage for sheath-fault

53、 locating.Protocolling and update via USB Protection class IP20/IP67 Robust casing=PELI-Case 1440with integrated trolley Option:tanDelta test attachmentVLF-Sin seriesTechnical details 30(34)kV69VLF-Sin seriesTechnical details 54kVTest voltage:54 kV Test capacity 0,1Hz:1 F Test capacity 0,01Hz:5,0F T

54、est frequency:0.1Hz(0.1Hz 0.01Hz)(automatic frequency adaption)-First test vans has successfully been delivered to EDF France,integrated in Centrix 1 and 3-phase.Vertriebstagung Baunach 2009,(c)SebaKMT 2009,all rights reserved.70VLF Tan DeltaSystem description/theoretical explanationsSebaKMT 201271V

55、LF Tan DeltaTan Delta basics All MV and HV power cables have a high voltage life expectancy;During the whole service life they are subjected to thermal,electrical,mechanical and environmental stresses;These stresses will change the morphological properties of the insulation,so will age/degrade the i

56、nsulation material;Result is a decrease of the breakdown-strength of the insulation;Decrease of the insulation breakdown-strength will in the end lead to cable failures;To avoid failures in the insulation the measurement of the dielectric losses could be a helpful tool.72RCIICR1tanVLF Tan DeltaTan D

57、elta basicsUICIRIDielectric losses are mainly dominated by the conductive losses that occur in the insulation material,in case of paper-mass cables also the polarization-losses will influence the dielectric losses.The Dielectric losses(Tan Delta)can be calculated according to:Visually given by:In si

58、mple terms,the insulation resistance is inversely proportional with the Tan Delta.(c)SebaKMT 2009,all rights reserved.73VLF Tan DeltaTan Delta basicsThe most important ageing phenomenon for PILC cables is the degradation of cellulose,what basically means that moisture comes free from the paper insul

59、ation because ofthermal and chemical processes.This moisture content will decrease the insulationresistance,resulting in an increase in Tan Delta.It is clear that with PILC cables external water ingress will also influence the Tan Delta!For XLPE cables thermal ageing is hardly measurable with the Ta

60、n Delta method,the IRC-method however is capable of detecting that type of ageing.The focus of Tan Delta measurements on XLPE cables is detecting the presence of water trees.Water trees are the most important ageing phenomenon for polymer cables and could lead into early cable faults!(c)SebaKMT 2009

61、,all rights reserved.74VLF Tan DeltaFrom water-tree to failure E-FieldSheath faultExistence of water treesgrowing of electrical treesBreakdown of the cable(c)SebaKMT,all rights reserved.75VLF Tan DeltaWatertrees electrical equations CRf21tan)(tan)(421UURRRRRRRisolationxisolationRCR1C1R2C2R3C3R4C4Wat

62、ertrees 76JICABLE,Versailles,June 1995,paper B.9.6.Voltage dependence of the Tan Delta of new and service aged MV XLPE power cables.Important factor in the decision making process is the Tan,also called tip-up.VLF Tan DeltaTan Delta basics77VLF Tan DeltaTan Delta basicsPD in Electrical Power Apparat

63、us;ISBN 3-8007-1760-3.Voltage dependence of the Tan Delta of a poor and well impregnated PILC power cables.Also in this case in addition to the absolute Tan Delta factor,the Tan or tip-up is an important factor in the decision making process.In case of poorly impregnated PILC cables the increase in

64、Tan Delta is a result of the discharges in the insulation.(c)SebaKMT,all rights reserved.78VLF Tan DeltaDecision making XLPE Cables The level of the Tan Delta can be distinguished into three categories,insulation is in goodcondition,insulation is aged or the insulation is highly degraded.Depending o

65、n thiscategory different maintenance actions apply.XLPE(according to IEEE 400 2001,Table 2)Tan Delta measured at 0,1Hz sinusoidal at 2U0.Cable must also be replaced when Tan between 1U0 and 2U0 is bigger then 110-3(alternative calculate the Tan between 0.5U0 and 1.5U0)Tan Delta at 2U0AssessmentRepet

66、ition rateTan 1.210-3Good5 years2.210-3 Tan 1.210-3AgedAnnuallyTan 2.210-3Highly degradedReplacement(c)SebaKMT 2009,all rights reserved.79 Further decision criteria are established in the norms:IEC 60502-2;cables are in good condition,if the temperature of the conductor is 5C 10C and the tan 0.810-3 IEC 141-1;cables are in good condition if:tan(2 U0)-tan(0.5U0)110-3 VLF Tan DeltaDecision making XLPE Cables(c)SebaKMT,all rights reserved.80 VLF Tan DeltaDifferences between homo-polymer and co-poly