Article
Engineering, Multidisciplinary
Walid S. S. Salah, Ahmed H. H. Gad, Mahmoud A. A. Attia, Soliman M. M. Eldebeikey, Abdelhady R. R. Salama
Summary: This research presents a design for a compact double layer printed UHF antenna to detect and discriminate various types of PD activity in a power transformer. The designed antenna has a small/simple size and ultra-wide frequency passband, making it suitable for detecting different types of PD activity in power transformers.
AIN SHAMS ENGINEERING JOURNAL
(2022)
Review
Engineering, Electrical & Electronic
Ruann Victor de Andrade Lira, Antonio Luiz Pereira de Siqueira Campos, Alfredo Gomes Neto, Isau de Souza Silva Jr, Alexandre Jean Rene Serres, Luiz Augusto Medeiros Martins Nobrega, Allan David da Costa Silva, Itaiara Felix Carvalho
Summary: In this article, simplified geometries for microstrip antennas were evaluated and optimized for partial discharge (PD) detection. The performance of the proposed antenna was improved using cascaded frequency selective surfaces (FSS). The insertion of the FSS did not affect the operational bandwidth of the antenna and increased the sensitivity for PD detection within the proposed frequency range. The proposed UHF sensor for PD detection was successfully tested on three different devices.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Review
Engineering, Multidisciplinary
S. M. Kayser Azam, Mohamadariff Othman, Hazlee Azil Illias, Tarik Abdul Latef, Mohammad Tariqul Islam, Mohd Fadzil Ain
Summary: In this article, a comprehensive investigation is conducted on the application of ultra-high frequency (UHF) printable antennas in partial discharge (PD) diagnostics. The main contribution of the article is providing a complete roadmap for selecting UHF printable antennas based on their practical significance in PD diagnostics of high-voltage equipment. The article highlights 7 intrinsic parameters of UHF antennas and their relationship with 7 extrinsic parameters of PD diagnostics performance. Furthermore, 8 different designing methods of UHF antennas are investigated, and the existing challenges and future direction of UHF printable antennas for contactless partial discharge diagnostic systems are pointed out.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Engineering, Electrical & Electronic
Jinwen Tian, Guozhi Zhang, Chuan Ming, Luyao He, Yang Liu, Jianben Liu, Xiaoxing Zhang
Summary: This letter presents the design of a new flexible Hilbert antenna for built-in detection of partial discharges (PD) in gas-insulated switchgear (GIS). The fractal antenna is designed on flexible polydimethylsiloxane (PDMS) material and demonstrates high PD detection sensitivity. It has a broad bandwidth and little effect on antenna bandwidth even with bending deformation.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2023)
Article
Computer Science, Information Systems
Jean Pierre Uwiringiyimana, Umar Khayam, Suwarno, Gian Carlo Montanari
Summary: Partial discharges are a common and harmful threat to the electrical insulation of high voltage and high field equipment. Continuous monitoring of partial discharges is necessary for preventing damage to electrical power equipment. The ultra-high frequency PD measurement method is widely used, but there is a need for more sensitive sensors to improve accuracy.
Article
Engineering, Multidisciplinary
Yinka Leo Ogundiran, Antonio Griffo, Shubham Sundeep, Jiabin Wang
Summary: This article presents a novel ring-shaped hybrid fractal antenna for detection of partial discharge (PD) in inverter-fed machines. The proposed antenna shows high sensitivity in the ultrahigh-frequency bandwidth for PD detection and has the ability to discriminate PD signals from other sources of high-frequency disturbances. It is suitable for noninvasive online condition monitoring and PD detection of any inverter-fed electrical machine.
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
(2022)
Article
Automation & Control Systems
Rachit Agarwal, Hui Li, Zhehui Guo, Peter Cheetham
Summary: The medium-frequency (MF) transformer in a phase-shift modulated dc solid-state transformer (SST) is susceptible to partial discharge (PD), which affects system reliability and lifetime. The close proximity and spiral geometry of tightly packed MF transformer windings carrying pulsewidth modulation (PWM) voltages create favorable conditions for PD inception. Phase-shift modulation results in a peak potential condition between adjacent posterior conductors of the primary and secondary windings, leading to PD at lower than expected operating voltages. This article investigates the effects of PWM voltages with high dv/dt switching transients on PD and lifetime characteristics of the MF transformer in a dc SST, and presents a nonintrusive PD detection strategy using high-speed optical sensors.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Chemistry, Analytical
Hanting Zhang, Guozhi Zhang, Xiaoxing Zhang, Hanlu Tian, Changyue Lu, Jianben Liu, Yin Zhang
Summary: This paper investigates a flexible built-in high-sensitivity elliptic monopole antenna using new techniques, with a thickness of only 0.28 mm, providing high signal detection performance under different curvature radii.
Article
Engineering, Electrical & Electronic
Yugandhara Rao Yadam, Sarathi Ramanujam, Kavitha Arunachalam
Summary: The polarization sensitivity of an ultrahigh-frequency (UHF) sensor for detecting partial discharge (PD) activity in gas insulated switchgear (GIS) was studied using a tapered planar spiral (TPS) antenna. The TPS antenna was optimized for circular polarization (CP) over the frequency range of 0.5-3.5 GHz. Compared to a linearly polarized (LP) UHF antenna, the TPS antenna showed stronger polarization sensitivity for detecting PDs in the GIS.
IEEE SENSORS JOURNAL
(2023)
Article
Automation & Control Systems
Jun Jiang, Wu Chen, Yu Song, Zhan Shen
Summary: The insulation coordination design is a critical challenge for high-power, high-voltage, high-frequency transformers in solid-state transformers. The interaction between insulation performance and operational parameters has been ignored until now. This letter proposes an active control method to decrease partial discharge and improve the reliability of the transformers.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Zhicheng Guo, Sanjay Rajendran, Jagadeesh Tangudu, Yasmin Khakpour, Stephen Taylor, Lei Xing, Yue Xu, Xianyong Feng, Alex Q. Huang
Summary: This study proposes a novel insulation and cooling structure for high-power medium frequency transformer (MFT) design, which is successfully applied in a medium voltage solid state transformer. Experimental results demonstrate that this design achieves high power density, partial discharge inception voltage, and superior thermal performance at 100 kW output power.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Yuliang Cao, Khai Ngo, Dong Dong
Summary: The demand for a high-power and high-density isolated dc-dc converter is increasing due to the rapid development of energy storage system, data center power supplies, and transportation electrification. A scalable electronic-embedded transformer (EET) is proposed to overcome the tradeoff between power rating and operation frequency by integrating a low-voltage bridge into the transformer windings. Additionally, a bidirectional EET-based dc transformer (EET-DCX) is proposed to solve the issues in traditional LLC-DCX designs and has the potential to achieve high performance in the megahertz operation frequency range.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Zheng Xu, Guoyu Hei
Summary: The article introduces the common phenomenon of corona discharge in power systems and its potential dangers, and proposes a novel miniaturized antenna for detecting this discharge. This rectangular spiral antenna has a unique structure and can be used on unmanned aerial vehicles for close-range detection of corona discharge in overhead lines.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Jiangrong Cheng, Yuan Xu, Dengwei Ding, Weidong Liu
Summary: This paper introduces the application of HFCT method in PD detection of transformers, which improves its anti-interference capacity by extending its frequency response to the UHF band. The experiment results confirm the effective detection of PD in the UHF band using HFCT method, with detection sensitivity comparable to conventional methods.
IEEE TRANSACTIONS ON POWER DELIVERY
(2021)
Review
Chemistry, Multidisciplinary
Zulbirri Faizol, Farid Zubir, Norhafezaidi Mat Saman, Mohd Hafizi Ahmad, Mohamad Kamal A. Rahim, Osman Ayop, Muzammil Jusoh, Huda A. Majid, Zubaida Yusoff
Summary: This article reviews the current methods for detecting and locating partial discharge signals in high-voltage equipment, compares their efficacy, and summarizes the future direction of research in PD detection.
APPLIED SCIENCES-BASEL
(2023)
