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Developed by:Ammar Anwar KhanM.Sc. Electrical Power Engineer
Cell: +966556281710Email: [email protected]
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“Without continual growth and progress,such words as improvement, achievement,and success have no meaning.”Benjamin Franklin
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Software development 5
Preliminary testing of software 4
Transponder development 2
Documentation 2
Pulse generator development 3
Extensive usage and reliability testing
of software and transponder
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PDMSuite PEPDM Power Equipment- Partial Discharge Measurement
PEPDA Power Equipment- Partial Discharge Analysis
PEPDLM Power Equipment- Partial Discharge Localization Measurement
PEPDLA Power Equipment- Partial Discharge Localization Analysis
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Contains 4 softwares
Two softwares for monitoring and localizationmeasurement
Two softwares for monitoring and localizationanalysis
It authorizes the laptop and PDM being used. If both are authorized, then access will be
granted to the measurement softwares. However, analysis softwares are not under this
authorization.
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Tested by comparing with Conventional
System and one of the Commercial online
Systems.
Results were matched and found satisfactory
However processing speed of PEPDM is
greater than one of the Commercial systems
with some improved modifications.
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Simultaneous acquisition of 4 sensors.
Wavelet de-noising can be done on the run
It sets the instrument for acquisition automatically
Very simple to use for PD acquisition
Fast acquisition process
Sampling rate: 100MS/s
Acquisition and file saving time of 50 cycles of data at
100MS/s for 2 sensors is around 50 seconds to 1.5 minute.
(Commercial system = 3-4 minutes)
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4 Acquisition methods
Event based
▪ Full 60Hz/50Hz cycle data is retained/ Only Pulses are
retained
Time based
▪ Full 60Hz/50Hz cycle data is retained/ Only Pulses are
retained
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Saves the data about statistical parameters in Excel file. Gives the phase and frequency component and pulse
shape for each PD pulse Simultaneous PD pulses can be analyzed. If filtering has not been done, wavelet de-noising can
be done to the acquired data. It gives all the data points to excel file PD pulse rise and fall times can also be investigated. It gives the magnitude in mV, dB. However pC is not
yet functional and will be made in action after thedevelopment of pC Calibrator
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Positive Cycle
Mean Variance Standard Deviation Skewness
Kurtosis
Negative Cycle
Mean Variance Standard Deviation Skewness
Kurtosis
Asymmetry , Cross-correlation
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C1 C2 C3 C4
Hq
_max
(ph
i)
Po
siti
ve C
ycle Mean 0.005074 0.005158 0.00153
Variance 0.000176 0.000105 5.86E-06
Standard Deviation 0.013251 0.01026 0.002422
Skewness 3.714014 3.301933 1.198719
Kurtosis 12.97406 11.06244 -0.1633
Neg
ativ
e C
ycle Mean 0.006122 0.006172 0.001601
Variance 0.000202 0.000135 5.22E-06
Standard Deviation 0.014201 0.011598 0.002285
Skewness 3.33149 2.803884 1.001485
Kurtosis 10.0797 7.106269 -0.45243
Asymmetry 0.093643 0.089419 0.022495
Crosscorrelation -0.0734 -0.06718 0.265343
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C1 C2 C3 C4
Hq
_avg
(ph
i)
Po
siti
ve C
ycle Mean 2.7E-05 2.46E-05 1.1E-05
Variance 4.71E-09 2.8E-09 4.51E-10
Standard Deviation 6.86E-05 5.29E-05 2.12E-05
Skewness 3.533573 3.352851 2.396429
Kurtosis 12.4109 12.01879 6.085698
Neg
ativ
e C
ycle Mean 3.33E-05 2.75E-05 1.13E-05
Variance 6.15E-09 2.91E-09 3.6E-10
Standard Deviation 7.84E-05 5.4E-05 1.9E-05
Skewness 3.451918 3.133342 1.847037
Kurtosis 11.61274 10.49167 2.950633
Asymmetry 0.104176 0.055303 0.016083
Crosscorrelation -0.07204 -0.09791 0.16671
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C1 C2 C3 C4
Hq
n(p
hi) Po
siti
ve C
ycle Mean 0.816667 1.177778 0.7
Variance 2.038827 2.951459 1.641341
Standard Deviation 1.427875 1.717981 1.281148
Skewness 1.952901 1.565812 2.156043
Kurtosis 3.418673 2.015932 4.767803
Neg
ativ
e C
ycle Mean 1.138122 1.441989 0.812155
Variance 2.908594 3.848005 1.631185
Standard Deviation 1.70546 1.961633 1.277178
Skewness 1.522412 1.455371 1.461821
Kurtosis 1.520727 1.640115 1.107492
Asymmetry 0.164445 0.100853 0.074169
Crosscorrelation 0.155225 0.017549 0.177589
Time C1 Activity C2 Activity C3 Activity C4 Activity
3.71 0.06 0.05 0.01
6.30 0.06 0.05 0.01
8.98 0.06 0.05 0.01
11.62 0.01 0.01 0.01
14.34 0.06 0.05 0.01
17.10 0.01 0.01 0.01
19.82 0.01 0.01 0.01
22.52 0.01 0.01 0.01
25.20 0.06 0.05 0.01
27.91 0.06 0.05 0.01
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Sensor Sensor Information Transfer Impedance
Sensor 1 HFCT 4
Sensor 2 TEV 4
Sensor 3 RF Antenna 4
Sensor 4
Date 24/3/2013
Time 16:18:00
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Time(us) C1 C2 C3 C4
0.019973 0.003062 -0.01089 -0.00024 0
0.039947 0.002837 -0.01075 -0.00025 0
0.05992 0.002574 -0.01058 -0.00026 0
0.079893 0.002449 -0.01054 -0.00027 0
0.099867 0.002288 -0.01047 -0.00028 0
0.11984 0.002089 -0.01036 -0.00029 0
0.139814 0.0019 -0.01026 -0.0003 0
0.159787 0.001849 -0.01029 -0.0003 0
0.17976 0.001761 -0.01028 -0.00031 0
0.199734 0.001637 -0.01024 -0.00032 0
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Auto setting of the system
Can acquire and analyze the PD location
It has free running mode and capturing mode.
Values of cable exact length, approximate
length and PD pulse velocity of propagation
can be entered.
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Each pulse acquired during localization measurement can
be analyzed.
Filtering can still be done during analysis
Pulse shape can be zoomed and values of start of main
pulse, reflected pulse or first main pulse can be entered.
However, if exact length of the cable and PD pulse velocity
is known, then only starting locations of main and reflected
pulse are required.
Localization map can be stored after analysis
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Number Location (%) Magnitude
1 50.207 0.06326709
2 3.8 0.06178103
3 50.207 0.06254474
4 3.8 0.06248813
5 6.3653 0.06245441
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Yellow pulses shows the actual PD. Red pulses show the response time of developed
transponder. Red pulses were taken from the last point of
transponder circuit after which pulse can beinjected to the cable.
Time difference between detected and injectedpulse is 1.2μs.
Laboratory testing was done with the transponderand it responded to the received pulse as low as30mV.
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Thanks for your TIME
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