Zobrazeno 1 - 10
of 87
pro vyhledávání: '"Donald M. Hepburn"'
Publikováno v:
High Voltage (2018)
On-line partial discharge (PD) monitoring is being increasingly adopted to improve the asset management and maintenance of medium-voltage (MV) motors. This study presents a novel method for autonomous analysis and classification of motor PD patterns
Externí odkaz:
https://doaj.org/article/01e4e34054e54c05a5ef7dc2ead8baef
Publikováno v:
Energies, Vol 7, Iss 11, Pp 7717-7731 (2014)
Voltage unbalance (VU) in residential distribution networks (RDNs) is mainly caused by load unbalance in three phases, resulting from network configuration and load-variations. The increasing penetration of distributed generation devices, such as sma
Externí odkaz:
https://doaj.org/article/4cde7c88b38c41d8a2584f288fd9ff25
Autor:
Martin D. Judd, Donald M. Hepburn, Fan Yang, Alistair Reid, Chengke Zhou, Lee Li, Ganjun Wang, Zhaohui Li, Wah Hoon Siew, Xiaosheng Peng, Ashfaque Ahmed Bhatti, Yijiang Wu
Publikováno v:
IEEE Transactions on Power Delivery. 34:1460-1469
It is a great challenge to differentiate partial discharge (PD) induced by different types of insulation defects in high-voltage cables. Some types of PD signals have very similar characteristics and are specifically difficult to differentiate, even
Random Forest Based Optimal Feature Selection for Partial Discharge Pattern Recognition in HV Cables
Autor:
Jinshu Li, Alistair Reid, Martin D. Judd, Donald M. Hepburn, Lee Li, Ashfaque Ahmed Bhatti, Yijiang Wu, Wan Hoon Siew, Xiaosheng Peng, Zhaohui Li, Chengke Zhou, Ganjun Wang
Publikováno v:
IEEE Transactions on Power Delivery. 34:1715-1724
Optimal selection of features of Partial Discharge (PD) signals recorded from defects in High Voltage (HV) cables will contribute not only to the improvement of PD pattern recognition accuracy and efficiency but also to PD parameter visualization in
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 26:547-553
This paper presents a case study on a 275 kV oil-filled cable. The condition assessment and diagnosis are based on analysis of cable surface temperature in relation to its current load and insulation dielectric loss. The work was initiated by a local
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 24:2677-2685
Cross-bonded three-phase single-core Cross-linked Polyethylene (XLPE) cables are widely used in power transmission and distribution systems. A great deal has been published on on-line monitoring of HV cable systems to prevent failure. Relative Dielec
Publikováno v:
IEEE Transactions on Power Delivery. 32:2281-2290
Cross-bonded metal sheath connection is applied in sectioned single-core power cables to reduce or eliminate the voltages that are induced in the sheath over long distances. However, cross-bonded cables present an opportunity as well as a challenge f
Publikováno v:
Electric Power Systems Research. 149:89-101
Dielectric loss has long been recognized as one of the most important indicators of cable insulation health. Although huge efforts have been made in the past to measure the dielectric loss of cable circuits, there has been no report of any successful
Publikováno v:
Renewable Energy. 105:674-688
The fast growing wind industry requires a more sophisticated fault detection approach in pitch-regulated wind turbine generators (WTG), particularly in the pitch system that has led to the highest failure frequency and downtime. Improved analysis of
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 24:7-16
This paper presents an investigation of effects of high voltage direct current (HVDC) superimposed voltage harmonics on partial discharge (PD) behavior. Firstly, a single air filled void embedded in a slab of polymeric insulation was modeled using fi