Results 81 to 90 of about 746 (183)

An on-line power/voltage stability index for multi-infeed HVDC systems

Journal of Modern Power Systems and Clean Energy, 2019
High-voltage direct current (HVDC) transmission is playing an increasingly important role in modern power systems, and the resulted power/voltage stability issue has raised widespread concern. This paper presents an on-line power/voltage stability index (
Jian Xu, Tiankai Lan, Siyang Liao, Yuanzhang Sun, Deping Ke, Xiong Li, Jun Yang, Xiaotao Peng   +7 more
doaj   +1 more source

Long‐term statistics of corona loss of HVDC transmission line

The Journal of Engineering, 2019
Corona loss is one of the electromagnetic environment parameters of high‐voltage direct current (HVDC) transmission lines. So far many countries have carried out researches and measurements on it. In 2008, UHVDC test lines were established in the National Engineering Laboratory for UHV Technology (Kunming) at the altitude about 2100 m.
Zhanqing Yu, Xiaorui Wang, Rong Zeng, Lei Liu, Min Li   +4 more
openaire   +2 more sources

MT–HVdc Systems Fault Classification and Location Methods Based on Traveling and Non-Traveling Waves—A Comprehensive Review

Applied Sciences, 2019
Estimation of fault classification and location in a multi-terminal high voltage direct current (MT−HVdc) transmission system is a challenging problem and is considered to be a fundamental maneuver of dc grid protection.
Raheel Muzzammel, Ali Raza, Mohammad Rashid Hussain, Ghulam Abbas, Ishtiaq Ahmed, Mohammed Qayyum, Mohammad Ashiquee Rasool, Mohammed Abdul Khaleel   +7 more
doaj   +1 more source

Power converter fault analysis in hvdc transmission line

, 2021
Nüfus artışı, büyüyen kentler, artan enerji talebi ve artan çevre sorunları enerji iletim sistemlerinin yetersiz kalmasına yol açmaktadır. Özellikle yoğun nüfuslu bölgelerde yeni HVAC iletim hatlarının yapılması için yeterli alanı bulmak giderek zorlaşmaktadır.
openaire   +2 more sources

The overhead transmission line protection scheme for the voltage-source converter-based HVDC grids

The Journal of Engineering, 2019
The fast DC line protection technology is one of the main challenges to high-voltage direct current (HVDC) grids. Based on the Zhangbei HVDC grid project, this paper proposes a non-unit overhead transmission line protection scheme for bipolar voltage ...
Yanting Wang, Baohui Zhang, Baohui Zhang, Xinkai Fan   +3 more
doaj   +1 more source

Application of Time-Frequency Analysis with Selection of Suitable Mother Wavelets for Transient States of HVDC Transmission Lines

Sir Syed University Research Journal of Engineering and Technology, 2023
Recent developments in power semiconductor devices have made High Voltage Direct Current (HVDC) transmission systems the most crucial technology for future power systems. Today several HVDC projects have been commissioned around the world.
Muhammad Tarique Chachar, Aslam Pervez Memon, Jamshed Ahmed Ansari   +2 more
doaj  

Quantum Gyroscopic Stabilization for HVDC Transmission Lines

This paper presents a comprehensive quantum stabilizationsystem for ±800 kV HVDC transmissionlines, demonstrating 43.7 % improvement in transientstability with record 1.6 ➭s response time. The studyincludes experimental validation under various faultconditions, detailed comparison with existing methods,EMI resistance testing, and compliance ...
openaire   +1 more source

Short-term Optimal Scheduling Model for Hydropower Stations Considering Peak Shaving of Local and HVDC Receiving Power Grids

Renmin Zhujiang
In the face of the increasingly severe peak shaving pressure on both sending and receiving power grids of the high voltage direct current (HVDC) of large-scale hydropower stations,a short-term optimal scheduling model that takes into account peak shaving
ZHOU Binbin, ZHANG Congtong, LIU Benxi, CHENG Chuntian, CHEN Kai, WANG Youxiang   +5 more
doaj  

Short-Circuit Current Calculation of Flexible Direct Current Transmission Lines Considering Line Distribution Parameters

Energies
A fault on the DC side of a flexible HVDC system, along with the rise in short-circuit current, develops rapidly. With the gradual expansion of flexible HVDC technology to large capacities and long-distance transmission and offshore transmission ...
Zhuoya Wang, Liangliang Hao, Zemin Wang
doaj   +1 more source

Enhancing HVDC transmission line fault detection using disjoint bagging and bayesian optimization with artificial neural networks and scientometric insights. [PDF]

Sci Rep
Yousaf MZ, Singh AR, Khalid S, Bajaj M, Kumar BH, Zaitsev I.   +5 more
europepmc   +1 more source