Abstract
Protection of a transmission line which includes Flexible AC Transmission system (FACTS) devices using distance protection is a challenging task. In this paper, a power system with Static Synchronous Series Compensator (SSSC) is placed at the center of the transmission line is taken into analysis. In this paper a statistical algorithm is proposed which detects and classifies the type of fault and locates it in the SSSC compensated transmission line. The proposed algorithm is based on wavelet transform of the three phase current measured on the sending end of the line and Classification And Regression Tree (CART), a commonly available statistical method is used to classify the fault. Wavelet transform of current signal provides the hidden information of the fault location which is the input to the CART. The algorithm developed is simple and effective in detecting, classifying, and estimating the location of fault. The effective and efficient way of handling faults are exhibited using various fault cases and their corresponding simulation also shows it.
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Acknowledgments
The authors are thankful to the authorities of Thiagarajar College of Engineering, Madurai-625015, India, for providing all the facilities to do the research work.
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Appendix: System Parameters of Fig. 1. (Base MVA = 100)
Appendix: System Parameters of Fig. 1. (Base MVA = 100)
- Generator:
-
Rated Voltage: 11 kV
Short Circuit Level: 6GW
X/R Ratio: 7
- Transformer1(Y/Y):
-
Rated Voltage: 11 kV/110 kV
- Transformer2(Y/Y):
-
Rated Power: 250 MVA
Leakage Resistance: 0.002pu
Leakage Resistance: 0.08 pu
- Transformer3(Y/Y):
-
Rated Voltage: 110 kV/33 kV
- Transformer4(Y/Y):
-
Rated Power: 300 MVA
Leakage Resistance: 0.002 pu
Leakage Resistance: 0.08 pu
- Transmission Line :
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Resistance: 0.01809 pu
Reactance: 0.0195 pu
- Load1:
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Active Power: 15 MW
- Load2:
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Reactive Power: 50 MVAR
- SSSC:
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Rated power: 70 MVA
Nominal DC Voltage: 700 V
Nominal AC Voltage: 6.6 kV
Number of Pulses: 12
- Series Coupling Transformer:
-
Rated Voltage: 6.6 kV/48 kV
Rated power: 70 MVA
Leakage Resistance: 0.001 pu
Leakage Reactance: 0.05 pu
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Geethanjali, M., Anju Alias, M., Karpaga Senthil Pandy, T. (2014). Discrete Wavelet Transform Based Fault Detection and Classification in a Static Synchronous Series Compensated Transmission System. In: Pant, M., Deep, K., Nagar, A., Bansal, J. (eds) Proceedings of the Third International Conference on Soft Computing for Problem Solving. Advances in Intelligent Systems and Computing, vol 258. Springer, New Delhi. https://doi.org/10.1007/978-81-322-1771-8_8
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DOI: https://doi.org/10.1007/978-81-322-1771-8_8
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Online ISBN: 978-81-322-1771-8
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