Results 61 to 70 of about 122,975 (192)

A Post-Contingency Power Flow Control Strategy for AC/DC Hybrid Power Grid Considering the Dynamic Electrothermal Effects of Transmission Lines

IEEE Access, 2019
The blocking of large-capacity HVDC or the tripping of AC transmission lines by accident will cause power flow transfer sharply and increase the risk of cascading faults in AC/DC hybrid power grid.
Jian Hu, Jian Wang, Xiaofu Xiong, Jing Chen   +3 more
doaj   +1 more source

Numerical Analyze Of Corona Discharge On Hvdc Transmission Lines

, 2015
This study and the field test comparisons were carried out on the Algerian Derguna – Setif transmission systems. The transmission line of normal voltage 225 kV is 65 km long, transported and uses twin bundle conductors protected with two shield wires of transposed galvanized steel.
H. Nouri, A. Tabbel, N. Douib, H. Aitsaid, Y. Zebboudj   +4 more
openaire   +2 more sources

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  

Mitigation of Magnetic Field Levels in Bipolar Transmission Lines of 500 and 600 kV in HVDC

Energies
High-Voltage Direct Current (HVDC) systems are transforming the global energy landscape, distinguished by their efficiency, stability, and low impact on the electrical grid.
Jorge Luis Aguilar Marin, Luis Cisneros Villalobos, José Gerardo Vera-Dimas, Jorge Sánchez Jaime, Hugo Albeiro Saldarriaga-Noreña, Hugo Herrera Gutiérrez   +5 more
doaj   +1 more source

Numerical simulation of electromagnetic fields in HVDC transmission lines: realistic case studies of 500 kV and 800 kV systems

Discover Applied Sciences
While HVAC systems have evolved through advanced designs such as BOLD and compact high surge impedance lines to enhance performance and reduce right-of-way requirements, HVDC remains the preferred solution for long-distance bulk power transmission due to
Aya M. Fathy, Mostafa Al-Gabalawy, Hanafy M. Ismail   +2 more
doaj   +1 more source

A Review On Hvdc Transmission Line Protection With Different Techniques

, 2016
This paper presents overview on methods which is used for locating faults on the HVDC transmission lines. Different methods like Distance Protection Method, Discrete Fourier Transform (DFT), Hilbert-Huang Transform Method, Independent Component Method, Fuzzy Logic Method, Wavelet Transform (WT), Natural Frequency Method, Artificial Neural Network (ANN)
Mr. Shrishail H. Patale, Prof. M. S. Potdar   +1 more
openaire   +1 more source

An Approach to Protect Hvdc Transmission Line With Smart Detection

International Journal of Environmental Sciences
This paper proposes an approach to enhancing the protection of HVDC transmission lines through the integration of smart detection techniques. The proposed method leverages advanced monitoring systems, including sensors and real- time data analytics, to detect faults and anomalies with greater speed and accuracy.
Pramod Nilkanthappa Todkar, Dr. Rahul Kumar Budhania, Dr. Dharamraj Bhimrao Salunke   +2 more
openaire   +1 more source

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

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

Relative localization in wireless sensor networks for measurement of electric fields under HVDC transmission lines. [PDF]

Sensors (Basel), 2015
Cui Y, Wang Q, Yuan H, Song X, Hu X, Zhao L.   +5 more
europepmc   +1 more source