Results 211 to 220 of about 2,872 (262)

Low voltage fault ride through control in MMC-HVDC

2017 IEEE 26th International Symposium on Industrial Electronics (ISIE), 2017
Modular multilevel converters (MMCs) are the latest converter topology for the high voltage high power applications like the high voltage dc (HVDC) transmission. This paper presents the response of an MMC-HVDC converter during grid faults. Recent grid code requirements specify reactive current injection during low voltage fault conditions and negative ...
Chaudhary, Sanjay, Teodorescu, Remus, Rizadis, Dimitrios, Máthé, Lászlo   +3 more
  +5 more sources

Low-Voltage-Ride-Through-Assistenzsystem für dezentrale Erzeugungseinheiten

e & i Elektrotechnik und Informationstechnik, 2014
Wahrend eines Kurzschlusses im Netz nahe einem Synchrongenerator kommt es aufgrund einer verminderten Leistungsabgabe wahrend des Fehlers zu einer Beschleunigung des Rotors. Dies kann zu unerwunscht hohen Polradpendelungen bis hin zum Verlust des Synchronismus des Generators fuhren.
Norbert Essl, Herwig Renner
openaire   +1 more source

Low Voltage Ride Through Characteristics of Grid Forming inverters

2020 21st International Scientific Conference on Electric Power Engineering (EPE), 2020
With the certainty of the high share of power electronics in power grid, algorithms for various grid forming inverters have emerged in academia. Due to the grid synchronization strategy of the grid forming inverter is completely different from the current grid following inverters, its dynamic characteristics during grid faults are also different.
Ziqian Zhang, Robert Schurhuber, Lothar Fickert, Guochu Chen, Yongming Zhang   +4 more
openaire   +1 more source

Low voltage ride through(LVRT) research of DFIG

2013 25th Chinese Control and Decision Conference (CCDC), 2013
Nowadays Doubly Fed Induction Generator (DFIG) is used in variable speed wind power plants extensively. Doubly fed induction generator (DFIG) has many advantages such as low cost, reduced losses with an improved efficiency, variable speed operation and improved active and reactive power control capabilities.
Li Lianbing, Zhang Peng
openaire   +1 more source

Low-voltage ride-through simulation for microgrid systems

2017 IEEE International Conference on Electro Information Technology (EIT), 2017
In contrast to the previous generation of power grid codes, recent standards require that distributed energy resources (DERs) provide low-voltage ride-through (LVRT) capabilities during grid faults. Consequently, the high penetration of DERs in today's power system requires an efficient method of controlling the active and reactive power of those ...
Elham Foruzan, Marcelo C. Algrain, Sohrab Asgarpoor   +2 more
openaire   +1 more source

Voltage rise mitigation and low voltage ride through capabilities for grid-connected low voltage microgrids

2017 19th European Conference on Power Electronics and Applications (EPE'17 ECCE Europe), 2017
The total real power injected by distributed renewable energy sources (RES) in the low voltage (LV) grids can cause voltage rise effects during light load scenarios. Integrating RES in microgrid architectures can result in improved power quality of the electrical grid, by avoiding the voltage rise effect from occurring and also by providing ancillary ...
Alexander Micallef, Cyril Spiteri Staines   +1 more
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Effect of low voltage ride through (LVRT) characteristic on voltage stability

IEEE Power Engineering Society General Meeting, 2005, 2005
The number of wind installations has grown worldwide at unprecedented rates in recent years. As well, the average size of the installations has increased due to the advent of larger capacity machine, variable speed technology, and an increasing number of off-shore sites.
C. Abbey, G. Joos
openaire   +1 more source

Low Voltage Ride-Through Response Under High PV Penetration

2019 International Conference on Electrical, Communication, and Computer Engineering (ICECCE), 2019
The time variation (weather), photovoltaic (PV) capacity and its location are crucial factors impacting renewable energy sources integration to the Distribution Network. In addition to the above-mentioned constraints, researchers have paid attention on some recently investigated issues caused by PV penetration including; reverse flow of power, voltage ...
Yeboh Ngalo Lucky de Marco, Umair Naeem, Tao Zheng, Rehan Sadiq   +3 more
openaire   +1 more source

Low Voltage Ride Through of Wind Energy Systems

2017
This chapter titled, “Low Voltage Ride Through of Wind Energy Systems” focuses on the importance of low voltage ride through (LVRT) of wind turbines. The investigation of some selected grid codes has revealed that LVRT has different requirements in different grid codes.
Mehrdad, Tarafdar H, Muttaqi, Kashem M
openaire   +2 more sources

Remote detecting low voltage ride through ability of DFIG

TENCON 2015 - 2015 IEEE Region 10 Conference, 2015
There are difficulties in detecting low voltage ride through (LVRT) ability of offshore doubly fed induction generator (DFIG) because of complexity of sea condition. In this paper, a new scheme is put forward to solve this problem. This new scheme takes into account the effect of submarine cables on transient process of circuit, and the influence on ...
Caike Xie, null Weiguo Zhao, null Yutian Liu   +2 more
openaire   +1 more source