Developed by:Ammar Anwar KhanM.Sc. Electrical Power Engineer

Cell: +966556281710Email: engr.ammaranwar@hotmail.com

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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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