Results 61 to 70 of about 6,768 (226)

An Economic Performance Improving and Analysis for Offshore Wind Farm-Based Islanded Green Hydrogen System

Energies
When offshore wind farms are connected to a hydrogen plant with dedicated transmission lines, for example, high-voltage direct current, the fluctuation of wind speed will influence the efficiency of the alkaline electrolyzer and deteriorate the techno ...
Wei Feng, Liu Yang, Kai Sun, Yuebin Zhou, Zhiyong Yuan   +4 more
doaj   +1 more source

A Novel Converter Transformer DAM‐LSTNet Vibration Generation Model for Data Imbalance Identification

High Voltage, EarlyView.
ABSTRACT Converter transformer vibration failures, primarily because of winding and core vibrations, severely impact the safe operation of high voltage direct current (HVDC) systems. These vibrations are influenced by voltage and current, and are transmitted through transformer oil and structural components to the tank. Current numerical models fail to
Peiyu Jiang, Fanghui Yin, Liming Wang
wiley   +1 more source

Cooperative Control of Hydrogen Electrolyzers and HVDC Links for Frequency Regulation Sharing in Asynchronous Power System

IEEE Access
Frequency stability in low-inertia power systems has become a significant concern due to the growing integration of inverter-based distributed renewable generation.
Jonglak Pahasa, Nattachote Rugthaicharoencheep, Boonruang Marungsri, Chawasak Rakpenthai   +3 more
doaj   +1 more source

Application Analysis of MMC-HVDC AC Tie Line Transmission in New Energy Power Generation

Journal of Control Science and Engineering, 2022
In order to solve the problem of new energy power generation, the author proposes an application analysis method based on MMC-HVDC AC tie line transmission in new energy power generation.
Ruijuan Sun, Xiaoyuan Dang, Jiayi Yang
doaj   +1 more source

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

Evaluation of a Local Fault Detection Algorithm for HVDC Systems [PDF]

, 2019
Publisher Copyright: © 2019, European Association for the Development of Renewable Energy, Environment and Power Quality (EA4EPQ). All rights reserved.A great increase in the amount of energy generated from clean and renewable sources integrated in the ...
Santos Mugica, M., Rodriguez Sanchez, R., Larruskain Eskobal, M., Eguia Lopez, P., Perez Molina, M.J.   +4 more
core   +1 more source

Stability of two-terminal high-voltage direct-current power transmission systems: Nexus between parameters and controls

International Journal of Electrical Power & Energy Systems
The stability of high-voltage direct-current (HVDC) power systems is determined by both parameter variables (e.g., proportional-integral parameters) and control variables (e.g., control references).
Jiazuo Hou, Hanchen Deng, Petr Vorobev, Jimmy Chih-Hsien Peng   +3 more
doaj   +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

A Thermal‐Dependent Conductivity Coating for Surface Charge and Electric Field Mitigation Under Electrothermal Coupling Field

High Voltage, EarlyView.
ABSTRACT The problem of gas–solid interface charge accumulation is an important reason for distorting the surface electric field and then inducing surface discharge. The temperature gradient distribution formed on the spacer during the operation of a gas‐insulated transmission line (GIL) will aggravate the surface charge accumulation, further ...
Jianyi Xue, Bowen Xing, Weiming Wang, Jianzhao Sang, Ning Yang, Tao Wen, Lijian Ding   +6 more
wiley   +1 more source

Programs for the study of HVDC systems [PDF]

IEEE Transactions on Power Delivery, 1988
It is argued that because HVDC technology has reached a point where multiterminal HVDC systems are being planned and installed, planning and operating studies for systems of this type will become increasingly important. However, most of the tools available for such study are somewhat restricted in capability.
D.G. Chapman, J.B. Davies, F.L. Alvarado, R.H. Lasseter, S. Lefebvre, P.C.S. Krishnayya, J. Reeve, N.J. Balu   +7 more
openaire   +1 more source