Results 41 to 50 of about 1,581 (183)

Overview of Frequency-Control Technologies for a VSC-HVDC-Integrated Wind Farm

IEEE Access, 2021
In modern power systems, the increasing penetration of renewable energy resources has reduced the overall system inertia. However, the intermittent nature of wind power generation reduces frequency stability, which is a crucial issue.
Chung-Han Lin, Yuan-Kang Wu
doaj   +1 more source

Superconducting Fault Current Limiters for HVDC Systems

Energy Procedia, 2015
AbstractHigh-voltage direct current (HVDC) transmission systems using Voltage-Source Converters (VSC) are widely recognized as offering significant potential for long distance high power delivery, particularly for offshore wind farm connections. One of the barriers for the development of multi-terminal HVDC systems is the lack of technologies which ...
Pei, Xiaoze, Smith, Alexander; id_orcid 0000-0001-6782-4627, Barnes, Michael   +2 more
openaire   +3 more sources

About the Ageing‐Induced Modifications of Physical‐Chemical and Electrical Properties of Polyimide (PMDA‐ODA) Under Gamma Radiation and High Temperatures

High Voltage, EarlyView.
ABSTRACT This study investigates the effects of radiation‐induced ageing on the physical, chemical, mechanical and electrical properties of Poly[4,4′‐oxydiphenylene‐ pyromellitimide] (PMDA‐ODA) polyimide, a high‐performance insulation material widely used in aerospace applications.
Simone Vincenzo Suraci, Jizhu Jin, Davide Mazza, Davide Fabiani   +3 more
wiley   +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

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

Continuous commutation failure suppression strategy in hybrid multi-infeed HVDC transmission system

电力工程技术, 2022
For the wide application of high voltage direct current (HVDC) transmission engineering,the continuous commutation failure of line commutated converter HVDC (LCC-HVDC) has a seriously negative impact on the stable operation of the power system. Therefore,
ZHONG Mingming, XIA Chengjun, LI Shoutao, HUANG Chuyin, LI Chengxiang   +4 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

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

An Improved Mixed AC/DC Power Flow Algorithm in Hybrid AC/DC Grids with MT-HVDC Systems

Applied Sciences, 2019
One of the major challenges on large-scale Multi-Terminal High Voltage Direct Current (MT-HVDC) systems is the steady-state interaction of the hybrid AC/DC grids to achieve an accurate Power Flow (PF) solution. In PF control of MT-HVDC systems, different
Fazel Mohammadi, Gholam-Abbas Nazri, Mehrdad Saif   +2 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