Results 111 to 120 of about 341 (142)

An Accurate Small Signal Dynamic Model for LCC-HVDC

IEEE Transactions on Applied Superconductivity, 2021
This paper develops an accurate small signal model for line commutated converter based HVDC (LCC-HVDC). The overall process of the model establishment is demonstrated from five parts: AC system, DC system, control system, phase-locked loop (PLL) and the converter.
Yuqing Dong, Junpeng Ma, Shunliang Wang, Tianqi Liu, Xiang Chen, He Huang   +5 more
openaire   +1 more source

Modeling of LCC-HVDC systems using dynamic phasors

2015 IEEE Power & Energy Society General Meeting, 2014
This paper presents an average-value model of a line commutated converter-based HVDC system using dynamic phasors. The model represents the low-frequency dynamics of the converter and its ac and dc systems, and has lower computational requirements than a conventional electromagnetic transient (EMT) switching model. The developed dynamic-phasor model is
M. Daryabak, S. Filizadeh, J. Jatskevich, A. Davoudi, M. Saeedifard, V. K. Sood, J. A. Martinez, D. Aliprantis, J. Cano, A. Mehrizi-Sani   +9 more
openaire   +1 more source

Modelling and Control of Multiterminal LCC HVDC

2018 IEEE PES/IAS PowerAfrica, 2018
Recent advances in the development and availability of multiple manufacturer for power electronics industries have made multiterminal-High Voltage Direct Current (HVDC) links possible and feasible. The multiterminal HVDC (MTDC) configuration is commonly referred to as ‘HVDC Grids’.
Oluwafemi E. Oni, Andrew G. Swanson, Rudiren Pillay Carpanen   +2 more
openaire   +1 more source

Decentralized Supplementary Control of Multiple LCC-HVDC Links

IEEE Transactions on Power Systems, 2016
This paper presents a decentralized wide-area coordinated supplementary control of multiple line-commutated converter (LCC)-HVDC links to 1) prevent interactions among the HVDC links and 2) enhance the damping of the inter-area oscillatory modes. The proposed approach is based on the sparsity-promoting optimal control. The main features of the proposed
Sahar Pirooz Azad, Joshua Adam Taylor, Reza Iravani   +2 more
openaire   +1 more source

A Coordinated Marginal Current Control Method for LCC-HVDC

IEEE Transactions on Power Systems, 2019
Line-commutated-converter-based HVdc (LCC-HVdc) is extensively used in modern power systems. Most of the LCC-HVdcs are implemented with the control strategy termed marginal current control method (MCCM), while their operation is sensitive to disturbance from the ac part of the system.
Jian Xu, Tiankai Lan, Siyang Liao, Yuanzhang Sun, Deping Ke, Xiong Li, Jun Yang, Xiaotao Peng, Liping Sima   +8 more
openaire   +1 more source

Dynamic Var Reserve Assessment in Multi-Infeed LCC-HVDC Networks

IEEE Transactions on Power Systems, 2021
Recently, multi-infeed line-commutated converter-based high-voltage direct currents (LCC-HVDCs) represent one of the most attractive ways to accommodate large-scale power transfer in main load centers. However, this approach deteriorates the dynamic var reserve (DVR) in the receiving-end power grid, especially in scenarios with heavy loads.
Bo Hu, Tao Niu, Fan Li, Kaigui Xie, Wenyuan Li, Hongyang Jin   +5 more
openaire   +1 more source

Tapping existing LCC-HVdc systems with Voltage Source Converters

2016 IEEE Power and Energy Society General Meeting (PESGM), 2016
This paper presents the application of a Full-bridge modular multi-level converter (FB-MMC) to tap an existing LCC-HVdc system. During faults, the dc voltage of the FB-MMC is controlled to reduce the fault current instead of blocking the converters. Electromagnetic Transient Simulations performed with PSCAD has been used to demonstrate the performance ...
D.H.R. Suriyaarachchi, C. Karawita, M. Mohaddes   +2 more
openaire   +1 more source

Electromagnetic modeling of LCC-HVDC

2020
This chapter describes the electromagnetic transient (EMT) modeling of two-terminal line commutated converter-based high-voltage direct current (LCC-HVDC) transmission systems. The scope of the description is confined to modeling for the computation of EMTs associated with HVDC transmission systems using the widely spread EMT program-type method.
openaire   +1 more source

Development of an Advanced LCC-HVDC Model for Transmission System

11th IET International Conference on AC and DC Power Transmission, 2015
This paper describes an advanced LCC-HVDC model developed in PowerFactory for National Grid under the background of Western HVDC link in UK. Unlike most of the HVDC models in different simulation packages, this model explicitly incorporates the Automatic Filter Switching control and On-Load Tap Changer (OLTC) control.
null Ying Xue, null Dechao Kong, null Ziming Song, V. Hamidi, null Xiao-Ping Zhang   +4 more
openaire   +1 more source

HPTE Extruded Cables Polarity Reversals Performance in LCC HVDC Systems

2020 AEIT International Annual Conference (AEIT), 2020
The first part of the paper introduces the main operational differences, from a cable system perspective, between line commutated converter (LCC) and voltage source converter (VSC). As LCCs perform power reversal by inverting the DC voltage polarity, the general theory for cable insulation electrical stress calculation in this condition and the main ...
Marco Albertini, Stefano Cotugno, Davide Pietribiasi, Christian Remy   +3 more
openaire   +1 more source