Results 31 to 40 of about 377 (128)
Communication Requirements for a Hybrid VSC Based HVDC/AC Transmission Networks State Estimation
Energies, 2021 The communication infrastructure of the modern Supervisory, Control and Data Acquisition (SCADA) system continues to enlarge, as hybrid High Voltage Direct Current (HVDC)/Alternating Current (AC) networks emerge.
Motaz Ayiad +3 more
doaj +1 more source
Electromechanical Transient Modeling and Control Strategy of Decentralized Hybrid HVDC Systems
Energies, 2019 This paper studies the electromechanical transient model and the control strategy of line commutated converter (LCC) and modular multilevel converter (MMC) based decentralized hybrid High Voltage Direct Current (HVDC) Transmission systems.
Guoteng Wang +4 more
doaj +1 more source
Energies, 2018 A method for electromechanical modeling of line commutated converter (LCC)-modular multilevel converter (MMC)-based hybrid multi-terminal High Voltage Direct Current Transmission (HVDC) systems for large-scale power system transient stability study is ...
Liang Xiao +4 more
doaj +1 more source
Overview of Research on Stability and Control of VSC-HVDC
发电技术, 2019 Voltage source converter based high voltage direct current (VSC-HVDC) transmission systems has the advantages of good active and reactive power control capability and more suitable for multi-terminal transmission system.
Mingzhe WU, Wuhui CHEN
doaj +1 more source
Deterioration Law of Mechanical Properties of Insulation Pressboard Under Multifield Coupled Ageing
High Voltage, EarlyView.ABSTRACT Converter transformers can experience progressive deterioration of their oil–pressboard insulation under elevated temperature, combined AC–DC electrical stress and persistent mechanical vibration. This study investigates how mechanical vibration affects the mechanical properties of insulation pressboard and clarifies the associated microscopic
Jiayi Chen +5 more
wiley +1 more source
An Improved Mixed AC/DC Power Flow Algorithm in Hybrid AC/DC Grids with MT-HVDC Systems
Applied Sciences, 2019 One of the major challenges on large-scale Multi-Terminal High Voltage Direct Current (MT-HVDC) systems is the steady-state interaction of the hybrid AC/DC grids to achieve an accurate Power Flow (PF) solution. In PF control of MT-HVDC systems, different
Fazel Mohammadi +2 more
doaj +1 more source
A Control Parameter Design Method for Hybrid Multi-Terminal HVDC System [PDF]
IEEE Access, 2020 To achieve better control performance, a comprehensive control parameter design method that considers economics, stability and dynamic performance is essential for hybrid multi-terminal HVDC systems. In this paper, a hierarchical model for the control system of Hybrid-MTDC is constructed and the parameters are optimized on two layers.
Bingkun Li +4 more
openaire +2 more sources
High Voltage, EarlyView.ABSTRACT The alternate arm converter (AAC) is one of the most efficient multilevel topologies based on voltage source converters (VSCs), which has recently gained attention in various applications, particularly in high voltage direct current (HVDC) systems.
Ehsan Akbari, Milad Samady Shadlu
wiley +1 more source
Hybrid Mono–Bipolar HVDC System with Control Strategy for Offshore Wind Power Integration
EnergiesThe ever-growing scale of offshore wind power integration has led coastal provincial power grids to face the common issue of insufficient AC grid structure capacity. An effective solution involves constructing an offshore–onshore mono–bipolar hybrid high
Xingning Han +5 more
doaj +1 more source
Parallel Restoration Method for AC-DC Hybrid Power Systems Based on Graph Theory
IEEE Access, 2019 High voltage direct current (HVDC) transmission systems have been used for interconnection among multiple power grids. As a result, the conventional AC power systems are transforming into AC-DC hybrid power systems.
Changcheng Li +4 more
doaj +1 more source