Zobrazeno 1 - 10
of 10
pro vyhledávání: '"S. M. Hoek"'
Publikováno v:
e & i Elektrotechnik und Informationstechnik. 131:386-392
The paper explains theoretical aspects of PD signal propagation in the UHF range inside a transformer. The influences of inner structures inside the transformer and the sensor characteristics on UHF measurement results are discussed. Based on practic
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 20:2043-2051
This paper describes and practically illustrates modern methods for robust, and at the same time sensitive measurement of partial discharges; applied in the laboratory, onsite and during on-line monitoring of HV apparatus. For conventional, electrica
Publikováno v:
International Journal on Electrical Engineering and Informatics. 4:393-404
Publikováno v:
2012 IEEE International Conference on Condition Monitoring and Diagnosis.
Power transformers are important nodes in the electrical power grid. Common reasons for breakdown are problems in the insulation system. Detecting partial discharge in the insulation system of a power transformer at an early stage reduces the risk of
Publikováno v:
2012 IEEE International Conference on Condition Monitoring and Diagnosis.
Partial Discharge (PD) measurements are considered as a very powerful technique for testing and monitoring the condition of high-voltage (HV) insulations. PD activity is generally accepted as an early breakdown indicator, which is also reflected in n
Publikováno v:
2012 IEEE International Conference on Condition Monitoring and Diagnosis.
This paper describes and compares different de-noising approaches for partial discharge (PD) measurements. The working principles of antenna gating, dynamic noise gating, real-time pulse waveform analysis and synchronous multiterminal PD measurements
Autor:
S. M. Hoek, Ulrike Broniecki, B. Kastner, Paul Winter, Rene Hummel, O. Kessler, Alexander Kraetge
Publikováno v:
2012 IEEE International Symposium on Electrical Insulation.
The reliability of electrical systems depends on the quality and availability of the power apparatus. Power transformers are important nodes in the electrical power grid. Common reasons for breakdown are problems in the insulation system. Detecting p
Publikováno v:
2010 IEEE International Symposium on Electrical Insulation.
For PD measurements in unscreened laboratories, factory environments, or even during on-site conditions, the measuring result is overlaid and sometimes dominated by numerous disturbances. As common-wave interferences such as radio signals, e.g., can
Publikováno v:
2010 IEEE International Symposium on Electrical Insulation.
On-site PD measurements are usually intensively interfered by external disturbances such as corona from nearby systems and switching activity from the grid, respectively. Therefore, very often no clear assignment of PD sources to the tested object is
Publikováno v:
2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials.
On-side PD measurements are very often interfered by external disturbances as corona from neighboring systems and switching activity from the grid, respectively. Therefore no clear assignment of PD sources to the object is possible. However, a substa