Results 21 to 30 of about 235 (103)

Guest Editorial: Grid‐forming converters placement and utilisation to enhance transmission and distribution performances under high penetration of inverter‐based resources

IET Generation, Transmission & Distribution, 2023
Power systems around the world are rapidly transitioning to much higher shares of inverter‐based resources (IBRs) with few synchronous generators remaining online.
Badrzadeh Babak, Matevosyan Julia, Emin Zia, Lu Chao   +3 more
doaj   +1 more source

A hybrid arm‐multiplexing MMC for DC fault ride‐through without blocking

IET Renewable Power Generation, 2023
Considering both the DC fault ride‐through (FRT) and lightweight requirements of modular multilevel converter (MMC), this paper proposes a hybrid arm‐multiplexing modular multilevel converter (HAM‐MMC).
Yi Wang, Yuwei Li, Chen Wang, Jianye Tao
doaj   +1 more source

Modelling and analysis of LCC‐HVDC converter station for harmonic coupling of AC/DC power grid during geomagnetic storm

IET Power Electronics, 2023
In this paper, the problem of harmonic coupling between the converter transformer and the converter under the action of geomagnetically induced current (GIC) is proposed to be investigated.
Yang Peihong, Han Xiaoyong, Jiang Hui, Shi Xizhi, Zhang Zilei, Liu Chunming, Liu Lianguang   +6 more
doaj   +1 more source

Driver optimization of high power converter based on BIGT reverse conduction loss

IET Power Electronics
Bi‐mode Insulated Gate Transistor (BIGT), owing to its notable attributes in power density and compact dimensions, holds promising applications in the realm of high power converters.
Lei Qi, Ze Li, Xiangyu Zhang, Jin Yang, Yuanfang Lu, Jingfei Wang, Fuyue Wen, Kefeng Wang, Xinyu Hu   +8 more
doaj   +1 more source

A Novel Bipolar DC Connection Strategy for Photovoltaic Power Plants With a 50% Reduction in DC Cabling Length

Energy Science &Engineering, EarlyView.
Bipolar configuration is a new topology in the direct current (DC) system of photovoltaic power plants, which is topologically analogous to the bipolar configuration utilised in High‐Voltage Direct Current power transmission systems. DC cable length and copper usage are reduced by 50% using a bipolar configuration.
Duško M. Tovilović, Željko R. Đurišić, Vladan R. Durković   +2 more
wiley   +1 more source

PMU‐Based Wide Area Monitoring With Machine Learning to Prevent Blackouts in Bangladesh Power System

Energy Science &Engineering, EarlyView.
A Unified Real‐time Dynamic State Measurements (URTDSM) system with PMU and Phasor Data Concentrator (PDC) deployment plan has been proposed to avoid blackout in the Bangladeshi power system. Machine learning has been used to process data from PMU to identify abnormal events. ABSTRACT The electrical power system must be trustworthy and secure enough to
Imi Bintey Fariha Rahman, Md. Minarul Islam, Md. Shahin Parvej, Abdul Hasib Chowdhury, Taha Selim Ustun, Kashem M. Muttaqi   +5 more
wiley   +1 more source

Field Studies on the Influence of High‐Voltage Direct Transmission Underground Cables on Soils Along the SuedLink Route in Southwest Germany

Journal of Plant Nutrition and Soil Science, EarlyView.
During regular operation of the SuedLink at a load ≤75 %, the average increase in temperature in the plowing horizon is expected to be less than 1.6°C in the soils along the route in Southwest Germany. ABSTRACT Background The SuedLink was planned as a high‐voltage direct‐current underground cable route. The construction itself is a massive intervention
Joachim Ingwersen, Alexander Schade, Andreas Lehmann, Jonas Trenz, Maja Schreiber, Christoph Drefke, Harald Schramm, Christian Bidlingmaier, Simone Graeff‐Hönninger, Thilo Streck, Karl Wieland   +10 more
wiley   +1 more source

Analysis of stable operation region of the hybrid AC/DC distribution systems

The Journal of Engineering, 2020
Hybrid alternating current (AC)/direct current (DC) distribution is a promising technology emerging for future power systems owing to its advantages, such as high controllability and compatibility.
Ming Wu, Rui Li, Linze Yang, Hanwen Gu, Yueqi Wang, Zaibin Jiao   +5 more
doaj   +1 more source

Construction and Application of Online Vibration Frequency Response Analysis Method for Converter Transformer Winding

High Voltage, EarlyView.
ABSTRACT The harmonic current and vibration of a converter transformer are effective pieces of information for detecting mechanical faults in the winding. In this paper, the ratio of vibration acceleration to the current squared is defined as the vibration frequency response function (VFRF) of the winding, and then, a novel online vibration frequency ...
Shuyu Wu, Fan Zhang, Shengchang Ji
wiley   +1 more source

Quasi square wave operation of modular multilevel converter based dual active bridge DC–DC converter with inductor energy recovery

IET Power Electronics
The modular multilevel DC–DC transformer (MMDCT) provides a reliable solution to overcome the challenges of conventional dual‐active‐bridge converters in terms of power semiconductors ratings and dv/dt stress on transformer coupling windings.
Peizhou Xia, Chuantong Hao, Paul Judge, Michael Merlin, Stephen Finney   +4 more
doaj   +1 more source