Results 61 to 70 of about 6,910 (228)

Energy transmission by HVDC systems: theory and analytical simulations

, 2023
reservedLa trasmissione di energia tramite sistema HVDC (High Voltage Direct Current) è una tecnologia utilizzata per il trasferimento efficiente di grandi quantità di energia elettrica su lunghe distanze.
NICHIFOREL, EMANUEL
core  

Behaviour of HVDC Cables Under Variable Load Conditions: PD Detection and Recognition [PDF]

, 2023
HVDC technology is widely used today in the field of energy transmission over long distances and with underground or submarine cable lines. The advantages of these applications lie in the absence of stability and transport capacity problems which ...
Romano P., Rizzo G., Ala G., Imburgia A., Viola F., Di Fatta A.   +5 more
core   +1 more source

Dynamic Behaviour of Bubbles in Oil Under Electrothermal Ageing

High Voltage, EarlyView.
ABSTRACT During long‐term operation of converter transformers, the internal oil–pressboard insulation undergoes irreversible degradation. Partial discharge in the weakened insulation will cause the formation of a large number of bubbles in the insulating oil.
Hongbin Wu, Zhaoyang Kang, Ze Li, Zhongyu Zhao, Shuqi Li, Fuqiang Ren, Hongshun Liu, Qingquan Li   +7 more
wiley   +1 more source

HVDC Transmission system model.

, 2022
HVDC Transmission system model.
Qiaomei Wang (1710562), Hao Wu (65943), Yuping Yang (3874810), Sijing Deng (13851249), Hong Song (183361)   +4 more
core   +1 more source

Quality Management System and Maturity Evaluation of Overseas Flexible HVDC Transmission Project

发电技术, 2020
There are certain differences between the quality management of overseas flexible HVDC transmission project and domestic engineering quality management. In the management process, it is necessary to establish a correct quality management concept based on
Jiaqi CUI
doaj   +1 more source

Effects of Conditional Changes on High-Voltage Direct Current Transmission Line Characteristic

Journal of Electrical and Computer Engineering, 2022
The high-voltage direct current (HVDC) transmission system, which links the Gurun Substation of the National Electric Authority of Malaysia (Tenaga Nasional Berhad, TNB) with the Khlong Ngae Station of the Electricity Generating Authority of Thailand ...
Chaichan Pothisarn, Atthapol Ngaopitakkul, Monthon Leelajindakrairerk, Natthanon Phannil, Sulee Bunjongjit, Surakit Thongsuk, Bancha Sreewirote   +6 more
doaj   +1 more source

Development of ± 550 kV DC GIS Basin Insulator

High Voltage, EarlyView.
ABSTRACT The basin insulator is a core component of the insulation system for ± 550 kV gas‐insulated switchgear (GIS). This paper, using a finite element method for multi‐physics simulations of electric–thermal coupling, determines a geometry suitable for the industrial production of ± 550 kV GIS basin insulators.
Shaohua Cao, Chengwei Jing, Siqiong Zhang, Zuodong Liang, Zehao Zhang, Fangwei Liang, Yong Yang, Geng Chen, Jinliang He, Chuanyang Li   +9 more
wiley   +1 more source

Grid-Forming Operation of the HVDC Tyrrhenian Link-East for Improved Frequency Transients

, 2023
The paper examines the possibility of operating the VSC (Voltage Source Converter)-based HVDC (High Voltage Direct Current) Tyrrhenian Link-East with grid-forming capabil-ities.
Angelo L'Abbate, Gaetano Zizzo, Rossano Musca, Eleonora Riva Sanseverino, Lorenzo Vitulano, Adriano Iaria, Antony Vasile   +6 more
core   +1 more source

Nonlinear Control Design of Three-Level Neutral-Point-Clamped-Based High-Voltage Direct Current Systems for Enhanced Availability during AC Faults with Semi-Experimental Validation

Engineering Proceedings, 2023
This research paper addresses the issue of enhancing the operational availability of NPC three-level converter-based high-voltage direct current (HVDC) transport systems during alternating current (AC) grid fault conditions.
Ilyass El Myasse, Aziz Watil, Abdelmounime El Magri, Ambe Harrison   +3 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