Results 21 to 30 of about 17,685 (234)

HVDC Transmission Systems based Multi-level Voltage Source Converters for Iraqi Super Grid [PDF]

open access: yesEngineering and Technology Journal, 2014
High Voltage Direct Current Transmission (HVDC) with Voltage Source Converter (VSC) technology provides substantial technical and economical advantages for different applications compared to conventional HVDC transmission systems based on thyristor ...
Adil Hameed Ahmed   +1 more
doaj   +1 more source

A review of LCC-HVDC and VSC-HVDC technologies and applications

open access: yes2016 IEEE 16th International Conference on Environment and Electrical Engineering (EEEIC), 2016
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   +4 more sources

Modelling of HVDC breakers for HVDC grid simulations

open access: yes13th IET International Conference on AC and DC Power Transmission (ACDC 2017), 2017
This paper deals with the modelling of high-voltage direct current (HVDC) breakers in PSCAD. The models are aimed at HVDC grid simulation and are kept as simple as possible.
Augustin, Tim   +2 more
openaire   +3 more sources

LCC-HVDC Converter Station Reactive Power Optimization and Two-Layer Coordination Strategy Research Based on Synchronous Sondenser

open access: yes南方能源建设, 2023
[Introduction] Under the existing converter station reactive power compensation scheme, the synchronous condenser only provides transient reactive power support, and the AC (Alternating Current) filter undertakes steady-state reactive power compensation ...
Dongqing ZHANG   +3 more
doaj   +1 more source

Fault Detection and Classification of VSC-HVDC Transmission Lines Using a Deep Intelligent Algorithm [PDF]

open access: yesInternational Journal of Research and Technology in Electrical Industry, 2023
Considering the sensitivity of high voltage direct current transmission system protection and the difficulty in identifying external DC faults, this paper presents two methods for fault detection and classification in VSC-HVDC transmission lines.
Amir Inanloo salehi, Navid Ghaffarzadeh
doaj   +1 more source

Switching overvoltages and polarity reversal in presence of HVDC circuit breakers

open access: yes, 2023
The recent development of High Voltage Direct Current circuit breakers (HVDC CBs) prototypes may introduce many potential advantages for HVDC links in terms of flexibility and possible meshing.
Spezie R.   +8 more
core   +1 more source

Subsynchronous Oscillation Features and Control Measures for Wind Power Influx Area near HVDC

open access: yesZhongguo dianli, 2020
The power electronic devices which are widely used in wind power influx area, especially near the HVDC area, can easily produce a large number of subsynchronous harmonic.
Shengli WANG, Gang XU
doaj   +1 more source

Coordinative Frequency Control of Multi HVDC Links in Sending-End Power Grid Considering Over-Frequency Protection of Wind Power Generation

open access: yesZhongguo dianli, 2021
A large number of high voltage direct current (HVDC) projects are under construction or have been put into operation in order to mitigate the reverse distribution between energy and loads in China.
Guangzeng YOU   +5 more
doaj   +1 more source

Converting Overhead Lines from HVAC to HVDC: An Overview Analysis

open access: yes, 2021
Several contributions in technical literature highlight the potential offered by the conversion of an existing HVAC overhead line into a HVDC one. In the context of the world's energy transition from fossil fuel-based to higher and higher renewable ...
L'Abbate A.   +3 more
core   +1 more source

Causes of high amplitude of pipe-to-soil potential under HVDC interference and influencing factors

open access: yes工程科学学报, 2021
Since the 1950s, international studies have confirmed the technical advantages of high-voltage direct current (HVDC) transmission projects, such as large capacity, low loss, and high stability.
Xun YUAN   +3 more
doaj   +1 more source

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