Results 41 to 50 of about 341 (142)
In order to improve the simulation speed of the AC/DC hybrid grid, the inductance/capacitance (L/C) switch model for line-commutated converter of high-voltage direct current (LCC-HVDC) is presented in this study.
Yangyang He +4 more
doaj +1 more source
Normally, HVDC links are used for the asynchronous interconnection of power system networks. Similarly, asynchronous AC links are also used for the same application.
Imdadullah +2 more
doaj +1 more source
Line-commutated converter (LCC) based high-voltage direct current (HVDC) technology is a common technology for long-distance transmission of electricity.
Xiao Jin, Heng Nian, Bo Pang
doaj +1 more source
A review of LCC-HVDC and VSC-HVDC technologies and applications
High Voltage Direct Current (HVDC) systems has been an alternative method of transmitting electric power from one location to another with some inherent advantages over AC transmission systems. The efficiency and rated power carrying capacity of direct current transmission lines highly depends on the converter used in transforming the current from one ...
Oni, Oluwafemi Emmanuel +2 more
openaire +3 more sources
ABSTRACT This paper reviews the existing testing techniques for high voltage direct current (HVDC) cable systems, following as a backbone the structure of CIGRE Technical Brochure (TB) 852:2021 ‘Recommendations for testing DC extruded cable systems for power transmission at a rated voltage up to 800 kV’ because it has a fairly similar structure to ...
Giovanni Mazzanti
wiley +1 more source
Due to the complicated transients and the possibility of transition from a minor fault in AC subsystems to a severe blocking event of a high‐voltage direct–current (HVDC) transmission line, the study of AC‐DC hybrid power systems requires both efficient ...
Zeqi Hong +3 more
doaj +1 more source
In China, a structure in which multiple line-commutated converter based high-voltage direct current (LCC-HVDC) systems feed into the same AC system has been formed.
Sicheng Wang +7 more
doaj +1 more source
Harmonic Analysis of Transmission Scheme for Offshore Wind Farms Based on Diode Rectifier Unit
This paper builds a general mathematical for the multiple rectifier circuit used in DRU, which is based on the 12‐pulse and 24‐pulse rectifier circuits, and analyzes the harmonics of DRU using different rectifier circuits before and after the installation of AC filters by an offshore wind farm integration project. ABSTRACT The diode rectifier unit (DRU)
Qing Chen +4 more
wiley +1 more source
Economy Analysis of Flexible LCC-HVDC Systems with Controllable Capacitors
Commutation failure (CF) is a frequent dynamic event at inverter of LCC-HVDC systems caused by AC side faults which can lead to inverter blocking, interruption of active power transfer, and even system blackout. To eliminate CFs and improve system performance, new Flexible LCC-HVDC topologies have been proposed in previous research but with limited ...
Nan Chen +5 more
openaire +2 more sources
Design of cooling structure improvement of hybrid commutated converter valve
Abstract This paper presents a thermal management framework for 120 kV hybrid commutated converter (HCC) valves, addressing critical cooling challenges in multi‐hundred‐MW power conversion systems. Power loss calculations under rated (1.0 p.u.) and overload (1.2 p.u.) conditions demonstrate that HCC valves achieve comparable loss levels to line ...
Xu He +7 more
wiley +1 more source

