TY - JOUR
T1 - Partial Discharge Ultrasonic Detection Based on Sagnac Optical Interference Technique
AU - Jiang, Jun
AU - He, Yaqian
AU - Song, Yu
AU - Wang, Ruizhi
AU - Li, Xiaohan
AU - Ma, Guoming
AU - Wu, Qiang
AU - Liu, Jun
N1 - Funding information: This work is supported by Natural Science Foundation of Jiangsu Province (BK20211189, BK20220218) the State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources (LAPS22017), Project funded by China Postdoctoral Science Foundation (2022M720977), and Zhejiang Planned Projects for Postdoctoral Research Funds (ZJ2022114).
PY - 2023/11/15
Y1 - 2023/11/15
N2 - Partial discharge (PD) ultrasonic detection based on optical interference technique shows practical advantages such as anti-electromagnetic interference, intrinsic safety, and implantability of power equipment, but the sensitivity improvement is still a necessity. In this paper, the sensitivity is improved by polarization state control and interference structure parameter adjustment. For the disorder of polarization state in the interference system, the detection sensitivity within 20-300 kHz can be improved by 6.48 dB with the help of polarization control. In order to meet the PD detection requirements for various power apparatus, an optical PD detection method based on Sagnac interference structure is proposed. The frequency response can be dynamically adjusted according to the type of PD signals. For the typical PD model in the air, the frequency response of the sensor can be controlled at 20-100 kHz by using a 2000 m delay fiber, and the detection amplitude of the sensor is 5.85 times than that of the conventional PZT sensor. For the detection of PD signals in insulating oil, the frequency response can be moved to 20-160 kHz by using a delay fiber with length of 500 m, and the detection amplitude of the sensor is 12.68 times than that of PZT sensor. Therefore, the proposed PD sensor based on the Sagnac interference shows the advantages of adjustable frequency response, multi-scenario application, and high detection sensitivity.
AB - Partial discharge (PD) ultrasonic detection based on optical interference technique shows practical advantages such as anti-electromagnetic interference, intrinsic safety, and implantability of power equipment, but the sensitivity improvement is still a necessity. In this paper, the sensitivity is improved by polarization state control and interference structure parameter adjustment. For the disorder of polarization state in the interference system, the detection sensitivity within 20-300 kHz can be improved by 6.48 dB with the help of polarization control. In order to meet the PD detection requirements for various power apparatus, an optical PD detection method based on Sagnac interference structure is proposed. The frequency response can be dynamically adjusted according to the type of PD signals. For the typical PD model in the air, the frequency response of the sensor can be controlled at 20-100 kHz by using a 2000 m delay fiber, and the detection amplitude of the sensor is 5.85 times than that of the conventional PZT sensor. For the detection of PD signals in insulating oil, the frequency response can be moved to 20-160 kHz by using a delay fiber with length of 500 m, and the detection amplitude of the sensor is 12.68 times than that of PZT sensor. Therefore, the proposed PD sensor based on the Sagnac interference shows the advantages of adjustable frequency response, multi-scenario application, and high detection sensitivity.
KW - Acoustics
KW - Interference
KW - Optical fiber polarization
KW - Optical fiber sensors
KW - Sagnac interferometers
KW - Sensitivity
KW - Sensors
KW - interference
KW - optical fiber sensor
KW - partial discharge
KW - polarization state
KW - sensitivity
UR - http://www.scopus.com/inward/record.url?scp=85174839486&partnerID=8YFLogxK
U2 - 10.1109/jsen.2023.3321934
DO - 10.1109/jsen.2023.3321934
M3 - Article
SN - 1530-437X
VL - 23
SP - 27382
EP - 27389
JO - IEEE Sensors Journal
JF - IEEE Sensors Journal
IS - 22
ER -