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Investigation of transient and temporary overvoltages in a wind farm
2012 IEEE International Conference on Power System Technology (POWERCON), 2012Switching transients in wind farms are initiated by the action of circuit breakers during energization and deenergization events and also during occurrences and clearing of faults. In this paper, an investigation of transient and temporary overvoltages during wind farm switching events have been carried out by considering modeling methodology for all ...
Abhinay Chennamadhavuni +2 more
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Transient overvoltages and distance protections: problems and solutions
10th IET International Conference on Developments in Power System Protection (DPSP 2010). Managing the Change, 2010This paper investigates the relationship between post fault transient overvoltages and the functionality of the numerical distance protection. The study is conducted on a 66 kV network with a neutral earth resistor as method to earth the power system.
L. Torelli, S. Moorthy
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Study of lightning overvoltage transients using ATP
2015 International Conference on Circuits, Power and Computing Technologies [ICCPCT-2015], 2015Rapid development of transmission and distribution network requires an in-depth research and development work for their proper operation. Protection of the components used in transmission and distribution substations is one of the most important factors which must be taken care of in a very efficient manner. In this paper the analysis of lightning over
T. Chatterjee, A. Mukherjee
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Transient overvoltages in a railway system during braking
2010 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America (T&D-LA), 2010This paper presents an overvoltage analysis in the dc catenary of The Metro de Medellin railway system. The main objective is to study the sources of damages of motors in the trains. It was achieved a detailed study beginning with the direct measurement of variables and then the construction of a digital model in PSCAD-EMTDC.
Mario A. Suarez +2 more
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Transient overvoltage in distribution networks in rural areas
2016 33rd International Conference on Lightning Protection (ICLP), 2016A surge sensitivity study of distribution transformers in rural areas of Cundinamarca — Colombia was performed. The analysis took into account the grounding resistance magnitude and the transient overvoltage injection point. Lightning overvoltages are introduced in the IEEE 13 bus system test feeder by using the EMTP-ATP program, results show that ...
Luis Eduardo Perdomo Orjuela +2 more
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Calculation of Very Fast Transient Overvoltages in GIS
2005 IEEE/PES Transmission & Distribution Conference & Exposition: Asia and Pacific, 2005This paper refers to 500 kV gas insulated substation (GIS) of the Tian Huangping pumped storage power station in East China power system. With the current electro-magnetic transient program (EMTP) in world, we simulate and calculate the very fast transient overvoltages (VFTO) caused by operating of disconnect switch (DS), and the factors that ...
Tiechen Lu, Bo Zhang
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Harmonics and transient overvoltages due to capacitor switching
[Proceedings] 1992 Rural Electric Power Conference. Papers presented at the 36th Annual Conference, 1993This work presents a study of the steady-state and transient effects of power factor correction capacitors on the utility and on the customer. In the presence of harmonic-producing loads, capacitors used for power factor correction can cause parallel or series resonance problems which tend to increase the total harmonic distortion (THD) of the voltage ...
A.A. Girgis +3 more
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A new method of transient overvoltage monitoring for substation
Proceedings. International Conference on Power System Technology, 2003The electromagnetic voltage transformer or capacitive divider is usually used to monitor overvoltage in power system. The transient response of electromagnetic voltage transformer is slow, so they can't reflect transient overvoltage accurately. Optical voltage sensor is a new type of voltage measuring appliance, which measures voltage by crystal ...
null Xiufang Jia +3 more
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Transient overvoltage protection for UPS applications
2011 IEEE Trondheim PowerTech, 2011Uninterruptible Power Supplies (UPS) are used to ensure a continuous and reliable supply to critical loads. Different UPS technologies are available, offering different levels of load protection and power conditioning. This paper discusses various UPS topologies and operating modes, identifying the paths over which a surge or transient voltage may ...
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Analysis of real overvoltage transient in a TLM-modeled
Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation, 2010This paper presents the behavior of a grounding mesh in presence of a high-frequency overvoltage transient caused by switch closing in electrical substations and atmospheric discharges. The simulation of the mesh is based on Transmission Line Method (TLM).
L. H. A. de Medeiros +4 more
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