Abstract
Partial discharges (PD) are the most obvious signal to investigate the deterioration level of cast-resin transformers. As a cast-resin transformer is one of the main components of a power system, early PD detection is extremely important to ensure power system operation reliability. This experiment detected PD through a new electromagnetic sensor PD measurement module. Three cast-resin transformers of varying ratings, 50 kVA, 75 kVA, and 100 kVA, were employed to investigate transformer deterioration from high-voltage impulses. Each transformer received impulses with a range of 80–275 kV to accelerate insulation degradation. From the measurement results, it was found that two major factors are significantly related to the degradation level of cast-resin transformers. With these results, the study proposes a risk assessment algorithm for judging the residual life of cast-resin transformers based on two major factors; each a summation of the total PD magnitude during four cycles and discharge intervals. As the developed algorithm directly provides users with the current degradation state of the cast-resin and convenient PD measurement, it is expected to become a powerful diagnosis and inspection tool for the insulation health of cast-resin transformers.
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References
Chen MK, Chen J-M, Cheng CY (2016) Partial discharge detection in 11.4 kV Cast resin transformer. IEEE Trans Dielectr Electr Insul 23(4):2223–2231. https://doi.org/10.1109/TDEI.2016.7556498
Hikita M, Kozako M, Takada H (2010) Hirose T (2010) Partial discharge phenomena in artificial cavity in epoxy cast resin insulation system. IEEE Int Symp Electr Insul. https://doi.org/10.1109/TDEI.2013.6451365
Umemura T, Nakamura S, Hikita M, Maeda T, Higashiyama M (2013) Partial discharge of small-air-gap in cast-resin insulation system. IEEE Trans Dielectr Electr Insul 20(1):255–261. https://doi.org/10.1109/TDEI.2013.6451365
Mansour D-EA, Kojima H, Hayakawa N, Hanai M, Okubo H (2013) Physical mechanisms of partial discharges at nitrogen filled delamination in epoxy cast resin power apparatus. IEEE Trans Dielectr Electr Insul 20(2):2223–2231. https://doi.org/10.1109/TDEI.2013.6508747
Bodega F, Morshuis PHF, Lazzaroni M, Wester FJ (2004) PD recurrence in cavities at different energizing methods. IEEE Trans Instrum Meas 53(2):251–258. https://doi.org/10.1109/TIM.2003.822478
Liu T, Li Q, Huang X, Lu Y, Asif M, Wang Z (2018) Partial discharge behavior and ground insulation life expectancy under different voltage frequencies. IEEE Trans Dielectr Electr Insul 25(2):603–613. https://doi.org/10.1109/TDEI.2018.006810
Xiao M, Du BX (2016) Effects of high thermal conductivity on temperature rise of epoxy cast windings for power transformer. IEEE Trans Dielectr Electr Insul 23(4):2413–2420. https://doi.org/10.1109/TDEI.2016.7556520
Pierce LW (1992) An investigation of the temperature distribution in cast-resin transformer windings. IEEE Trans Power Del 7(2):920–926. https://doi.org/10.1109/61.127099
Tang Y-W, Tai C-C, Su C-C, Chen C-Y, Hsieh J-C (2008) Chen J-F (2008) Partial discharge signal analysis using HHT for cast-resin dry-type transformer. Int Conf Condit Monit Diagn. https://doi.org/10.1109/CMD.2008.4580340
Fuangsoongnern U, Plueksawan W (2014) Tikakosol K (2014) A measurement technique to identify and locate partial discharge in transformer with AE and HFCT. IEEE Innov Smart Grid Technol. https://doi.org/10.1109/ISGT-Asia.2014.6873773
Zeng S, Wang J, Hu Y, Wang Z, Huang H (2018) Analysis of time-frequency characteristics of PD electromagnetic wave based on electromagnetic simulation. In: 2018 Condition Monitoring and Diagnosis (CMD); 23–26 Sept. 2018; Perth, WA, Australia. Piscataway, NJ: IEEE, 2018. p 1–6
Judd MD, Farish O, Hampton BF (1996) The excitation of UHF signals by partial discharges in GIS. IEEE Trans Dielectr Electr Insul 3(2):213–228. https://doi.org/10.1109/94.486773
Jordan EC, Balmain KG (1968) Electromagnetic waves and radiating systems, 2nd edn. Prentice-Hall, New Jersey
Haefely Electronics (2019) Impulse voltage generators. https://www.hubbell.com/haefelyhipotronics/en/Products/Electrical-Electronic/Test-Equipment/High-Voltage/Impulse-Voltage-Generators/cl/2145731. Accessed 18 May 2018
Naidu MS, Kamaraju V (1995) Breakdown in solid dielectrics. High voltage engineering, 2nd edn. McGraw-Hill, New York, pp 71–73
Paoletti GJ, Golubev A (2001) Partial discharge theory and technologies related to medium-voltage electrical equipment. IEEE T Ind Appl 37(1):90–103. https://doi.org/10.1109/28.903131
Illias HA, Tunio MA, Molhlis H (2015) Determination of partial discharge time lag in void using physical model approach. IEEE Trans Dielectr Electr Insul 22(1):463–471. https://doi.org/10.1109/TDEI.2014.004618
Xue N, Yang J (2018) The location of partial discharge source in the power transformer with UHF sensors. In: The 2018 5th international conference on systems and information; 10–12 Nov. 2018; Nanjing, China: Piscataway, NJ: IEEE, 2018. p 261–265
Judd MD, Cleary GP, Bennoch CJ (2002) Applying uhf partial discharge detection to power transformers. IEEE Power Eng Rev 22(8):57–59
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Han, GR., Jeon, JC. & Park, JM. Cast-resin transformers: development of health assessment technique based on electromagnetic partial discharge detection. Electr Eng 101, 1211–1220 (2019). https://doi.org/10.1007/s00202-019-00845-2
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DOI: https://doi.org/10.1007/s00202-019-00845-2