Results 51 to 60 of about 377 (161)
Simulation of LCC-MMC HVDC Systems Using Dynamic Phasors
IEEE Access, 2021 This paper proposes a large-signal dynamic phasor (DP) model for the main circuit of the new emerging LCC-MMC HVDC hybrid system. The model is concise and compact, and provides convenient interfaces with the control systems and external electrical ...
Xiaoming Mao +3 more
doaj +1 more source
IET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.1) The typical operational risks and coupling characteristics of the AC/DC hybrid power grid are analyzed in detail. 2) A bi‐Level topology optimization method is designed for HVDC systems embedded in dense AC grids. 3) Considering engineering standards of both security and economy, multi‐dimensional security and stability constraints are incorporated ...
Mingxin Yan +5 more
wiley +1 more source
Economy Analysis of Flexible LCC-HVDC Systems with Controllable Capacitors
CSEE Journal of Power and Energy Systems, 2022 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
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IET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.The study presents a shapelet‐based method for short‐term voltage stability assessment in multi‐infeed HVDC systems, directly addressing the challenges of high‐dimensional, nonlinear and time‐varying phenomena intrinsic to modern power grids. By integrating a multi‐timescale interaction mechanism with an interpretable time‐series data mining approach ...
Yubo Sun, Shuqing Zhang, Chao Lu
wiley +1 more source
Startup Method and Strategy for Bipolar LCC-HVDC System Used as Black-Start Power Source
Zhongguo dianliThe scientific and reasonable black-start scheme is the most effective measure to cope with the power grid blackout, which can greatly accelerate the system recovery process, thus significantly reducing the losses of power system due to power failure ...
Qingwei WANG +3 more
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Study on overvoltage of hybrid LCC-VSC-HVDC transmission
The Journal of Engineering, 2018 Hybrid line commutation converter-voltage-source converter high-voltage direct current transmission (LCC-VSC-HVDC) power transmission has unique technical advantages, but its overvoltage study is not sufficient at present.
Dizhen Xu +4 more
doaj +1 more source
RPC-based frequency control strategy of LCC-HVDC sending end power system with renewable energy
Frontiers in Energy Research, 2022 Long-distance transmission of renewable energy via DC is currently a more economical transmission scheme. As the proportion of renewable energy at the generation end continues to rise, the inertia and damping level of the system is reduced, causing ...
Peng Wei +6 more
doaj +1 more source
Research on Fault Ride‐Through Characteristics of Inverter‐Side Hybrid HVDC in Offshore Wind Farms
IET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.This paper addresses issues in wind power DC transmission systems, such as difficulty in maintaining power delivery during rectifier‐side faults and frequent overvoltage occurrences during inverter‐side faults. A hybrid topology comprising a rectifier‐side MMC and an inverter‐side LCC‐MMC configuration is proposed, along with corresponding enhanced ...
Guoqing Yang, Jiaying He, Jiaying Xu
wiley +1 more source
Journal of Modern Power Systems and Clean EnergyLine commutated converter based high-voltage direct-current (LCC-HVDC) transmissions are prone to harmonic oscillation under weak grids. Impedance modeling is an effective method for assessing interaction stability.
Yifeng Liu +7 more
doaj +1 more source
Accurate and Efficient Harmonic Estimation for LCC-HVDC Systems
EnergiesModern grids’ dual-high characteristics elevate the role of wideband impedance measurement in operational risk assessment. In thyristor-based line-commutated converter-based high-voltage direct-current (LCC-HVDC) systems, where severe waveform distortion and high harmonic content prevail, nonintrusive wideband techniques rely on precise spectral ...
Dan Wang +5 more
openaire +1 more source