Results 51 to 60 of about 4,868 (226)

Influence of the VSC-HVDC System Structure on the Overvoltage of Single-Pole Grounding Fault [PDF]

, 2021
Flexible operation mode is one of the VSC-HVDC system’s advantages, and the power system may continue to operate in the future with different grid structures under maintenance and other working conditions.
Tiebing LU, Jialing WU
core   +1 more source

Impedance Characteristic-Based Frequency-Domain Parameter Identification Method for Photovoltaic Controllers

Energies
With the large-scale integration of photovoltaic power plants—comprising power electronic devices—into power systems, electromagnetic transient simulation has become a key tool for ensuring power system security and stability.
Yujia Tang, Xin Zhou, Yihua Zhu, Junzhen Peng, Chao Luo, Li Zhang, Jinling Qi   +6 more
doaj   +1 more source

Intelligent Energy Management Algorithms for EV-charging Scheduling with Consideration of Multiple EV Charging Modes

Energies, 2019
Electric vehicles (EVs) are now attracting increasing interest from both industries and countries as an environmentally friendly and energy efficient mode of travel.
Tian Mao, Xin Zhang, Baorong Zhou
doaj   +1 more source

Challenges for Protection of Future HVDC Grids [PDF]

Frontiers in Energy Research, 2020
Nowadays, High Voltage Direct Current (HVDC) transmissions are gaining relevance in long distance and renewable energy integration projects over the conventional Alternating Current (AC) transmissions due to several advantages as improved flexibility and independent active and reactive power controllability.
María José Pérez-Molina, D. Marene Larruskain, Pablo Eguía López, Garikoitz Buigues   +3 more
openaire   +2 more sources

Mechanism of Damage and Micro‐Characterisation of Irradiation‐Induced Free Radicals on the Epoxy Insulation of the Bridge Arm Reactors at High Altitude

High Voltage, EarlyView.
ABSTRACT Damage degradation of epoxy resin insulating materials by free radicals triggered by the ultraviolet irradiation environment at high altitude has become a key issue that restricts the reliability of the bridge arm reactor at high altitude.
Liang Zou, Xinya Luo, Zhiyun Han, Zhen Li, Xiaofeng Ding, Kejie Huang   +5 more
wiley   +1 more source

Adaptive active frequency support strategy for receiving-end MMC-HVDC stations based on rate of change of frequency

Frontiers in Electronics
As the proportion of HVDC infeed power increases in the eastern receiving-end power grid, inertia and frequency regulation capability decrease. Utilizing modular multilevel converter (MMC) stations at the receiving-end to provide active frequency support
Baoye Tian, Baoye Tian, Junjie Li, Junjie Li, Hefeng Zhai, Hefeng Zhai, Ye Zhang, Ye Zhang   +7 more
doaj   +1 more source

GRID‐FORMING CAPABILITIES OF HVDC CONVERTERS

, 2021
This presentation was part of the SP5 & SP6 WEBINAR on Grid solutions to realize 450 GW of offshore wind capacity by 2050.
Suul, Jon Are, D'Arco, Salvatore
openaire   +1 more source

Deterioration Law of Mechanical Properties of Insulation Pressboard Under Multifield Coupled Ageing

High Voltage, EarlyView.
ABSTRACT Converter transformers can experience progressive deterioration of their oil–pressboard insulation under elevated temperature, combined AC–DC electrical stress and persistent mechanical vibration. This study investigates how mechanical vibration affects the mechanical properties of insulation pressboard and clarifies the associated microscopic
Jiayi Chen, Guan Wang, Zihao Li, Zhongyu Zhao, Kuo Yan, Hongshun Liu   +5 more
wiley   +1 more source

Comparison between two VSC-HVDC transmission systems technologies : modular and neutral point clamped multilevel converter [PDF]

, 2009
The paper presents a detail comparison between two voltage source converter high voltage dc transmission systems, the first is based on neutral point-clamped (also known as HVDC-Light) and the second is based on innovative modular multilevel converter ...
Anaya-Lara, O., Finney, S.J., Burt, G.M., Adam, G.P., Williams, B.W., McDonald, J.R.   +5 more
core  

An equivalent modeling method for integrated water-wind-solar systems based on sparrow search algorithm

Energy Informatics
In the context of extensive integration of renewable energy sources into the electrical grid, the grid's fault transient behaviors have undergone significant changes.
Yuanhong Lu, Jie Zhang, Jingyue Zhang, Libin Huang, Haiping Guo, Binjiang Hu, Tianyu Guo   +6 more
doaj   +1 more source