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Journal articles on the topic 'Hybrid AC/DC transmission line'

Author: Grafiati

Published: 5 June 2025

Last updated: 16 July 2025

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1

Wang, Guangzhou, Xu Tian, Weipo Liu, Yuan Li, Xing Guo, and Haifeng Li. "An Electromagnetic Environment Monitoring Platform for AC-DC Parallel Line." Journal of Physics: Conference Series 2399, no. 1 (2022): 012041. http://dx.doi.org/10.1088/1742-6596/2399/1/012041.

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Abstract With the rapid development of China's economy, the electricity demand is increasing and the scale of power grid construction is expanding. Large-scale construction of transmission and substation projects leads to an increasing shortage of transmission corridors, which inevitably leads to the formation of parallel erection of AC and DC transmission patterns. When the AC and DC transmission lines are erected in parallel, the coupling effect makes the hybrid electromagnetic environment of the AC and DC parallel lines more complicated. In this paper, with the track-supported intelligent r

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2

Hong, Yuan Xin, and Guang Qing Bao. "Emergency Power Support and Voltage Stability Analysis of the AC/DC Hybrid Transmission System." Advanced Materials Research 614-615 (December 2012): 1033–37. http://dx.doi.org/10.4028/www.scientific.net/amr.614-615.1033.

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With the completion of Three Gorges Project, the power system in China is forming a huge AC/DC network. In the hybrid AC/DC parallel transmission system, a line fault will cause fluctuations even crash of the system. The HVDC transmission system based on the emergency DC power support (EDCPS) can provide a fast emergency power support for the interconnected AC power grid flexibly and improve the stability of AC power. A model of AC/DC hybrid transmission system is established in the PSCAD/EMTDC simulation environment. An improved PID controller is firstly introduced to the hybrid AC/DC transmi

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3

Cai, Hui, Mingxin Yan, Song Gao, Ting Zhou, Guoteng Wang, and Ying Huang. "Coupling Characteristic Analysis and Coordinated Planning Strategies for AC/DC Hybrid Transmission Systems with Multi-Infeed HVDC." Electronics 14, no. 11 (2025): 2294. https://doi.org/10.3390/electronics14112294.

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With the increasing penetration of renewable energy, the scale of AC/DC hybrid transmission systems continues to grow, intensifying risks such as line overloads under N-1 contingencies, short-circuit current violations, and operational stability challenges arising from multi-DC coupling. This paper explores the complex coupling characteristics between AC/DC and multi-DC systems in hybrid configurations, proposing innovative evaluation indicators for coupling properties and a comprehensive assessment scheme for multi-DC coupling degrees. To enhance system stability, coordinated planning strateg

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4

Tu, Yanming, Libo Jiang, Bo Zhou, et al. "Optimal Configuration of Battery Energy Storage for AC/DC Hybrid System Based on Improved Power Flow Exceeding Risk Index." Electronics 12, no. 14 (2023): 3169. http://dx.doi.org/10.3390/electronics12143169.

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After the fault disturbance (DC bi-polar blocking) in the AC/DC hybrid system, when the battery energy storage system (BESS) near the fault location is used to eliminate the power transfer, some sensitive and vulnerable transmission lines still have the problem of power flow exceeding the limit value. Therefore, an optimal configuration of BESS for AC/DC hybrid systems based on power flow exceeding risk index is proposed, which is used to eliminate the impact of power transfer on transmission lines. Firstly, considering the line outage distribution factor, the power flow exceeding risk index i

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5

Hwang, Sungchul, Sungyoon Song, Gilsoo Jang, and Minhan Yoon. "An Operation Strategy of the Hybrid Multi-Terminal HVDC for Contingency." Energies 12, no. 11 (2019): 2042. http://dx.doi.org/10.3390/en12112042.

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The application of the direct current (DC) transmission is increasing through the interconnection between grids or the renewable energy resource integration. Various types of DC transmission topology are researched, and the hybrid multi-terminal high voltage DC (HVDC), called the “MTDC”, is one of the research subjects. The hybrid multi-terminal HVDC is the MTDC system that is composed with the Line Commutated Converter (LCC) and Voltage Source Converter (VSC). Most hybrid MTDC research has been focused on the connection of the renewable energy generation sources, especially offshore wind farm

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6

Cai, Jie, Shuyu Guo, Shuang Liao, Xing Chen, Shihong Miao, and Yaowang Li. "Optimization Model of Key Equipment Maintenance Scheduling for an AC/DC Hybrid Transmission Network Based on Mixed Integer Linear Programming." Energies 13, no. 4 (2020): 1011. http://dx.doi.org/10.3390/en13041011.

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The unbalanced distribution of resource and consuming centers in China has prompted the AC/DC hybrid transmission technology. The maintenance scheduling of an AC/DC hybrid transmission network is the key technology to ensure its safety and reliability. In this study, the mutual influence mechanism of an AC/DC system in a maintenance period was analyzed in detail. The overhead transmission line and transformer are key equipment within an AC/DC hybrid transmission network, and an optimization model of the key equipment maintenance scheduling was established. The objective of the model was to imp

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7

Li, Tan, Zheng Zhao, Kun Xiao, et al. "Control Strategy of Suppressing Short-circuit Current VSCs Feeding into the AC Grid in a Hybrid Cascaded UHVDC System." Journal of Physics: Conference Series 2564, no. 1 (2023): 012041. http://dx.doi.org/10.1088/1742-6596/2564/1/012041.

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Abstract Hybrid cascaded ultra-high voltage dc is a new dc technique with a line commutated converter cascaded with one or several voltage source converters. It is an effective solution for large capability transmission as well as improving the stability of the ac grid with multiple dc transmission systems feeding in. Baihetan-jiangsu dc project in China is the first cascaded ultra-high voltage dc project in the world. For a receiving end with a strong ac system, the short circuit current is always large and close to the maximum ac breaker breaking capability, which is a threat to the ac syste

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8

Xiao, Liang, Yan Li, Huangqing Xiao, Zheren Zhang, and Zheng Xu. "Electromechanical Transient Modeling of Line Commutated Converter-Modular Multilevel Converter-Based Hybrid Multi-Terminal High Voltage Direct Current Transmission Systems." Energies 11, no. 8 (2018): 2102. http://dx.doi.org/10.3390/en11082102.

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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 proposed. Firstly, the general idea of modeling the LCC-MMC hybrid multi-terminal HVDC system is presented, then the AC-side and DC-side models of the LCC/MMC are established. Different from the conventional first-order DC-side model of the MMC, an improved second-order DC-side model of the MMC is established. Besides considering the firing angle

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9

Dai, Wei, Yang Gao, Hui Hwang Goh, Jiangyi Jian, Zhihong Zeng, and Yuelin Liu. "A Non-Iterative Coordinated Scheduling Method for a AC-DC Hybrid Distribution Network Based on a Projection of the Feasible Region of Tie Line Transmission Power." Energies 17, no. 6 (2024): 1462. http://dx.doi.org/10.3390/en17061462.

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AC-DC hybrid distribution grids realize power transmission through tie lines. Accurately characterizing the power exchange capacity between regional grids while ensuring safe grid operation is the basis for the coordinated scheduling of resources in interconnected distribution grids. However, most of the current AC/DC hybrid models are linear, and it is challenging to ensure the accuracy criteria of the obtained feasible regions. In this paper, a two-stage multi-segment boundary approximation method is proposed to characterize the feasible region of hybrid distribution grid tie line operation.

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10

Deng, Yujia, Zhengyou He, Ling Fu, Sheng Lin, Lei Liu, and Jiayi Zhang. "Research on fault location scheme for inverter AC transmission line of AC-DC hybrid system." IEEJ Transactions on Electrical and Electronic Engineering 13, no. 3 (2018): 455–62. http://dx.doi.org/10.1002/tee.22588.

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11

Zheng, Jia, Gong, Zhang, and Pei. "An Optimized Coordination Strategy between Line Main Protection and Hybrid DC Breakers for VSC-Based DC Grids Using Overhead Transmission Lines." Energies 12, no. 8 (2019): 1462. http://dx.doi.org/10.3390/en12081462.

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Compared with alternating current (AC) power grids, the voltage-sourced converter (VSC)-based direct current (DC) grid is a system characterized by “low damping”, as a result, once there is a short-circuit fault on the DC transmission line, the fault current will rise more sharply and the influence range will be much wider within the same time scale. Moreover the phenomenon that a local fault causes a whole power grid outage is more likely to occur. Overhead transmission lines (OHLs) have been regarded as the mainstream form of power transmission in future high-voltage, large-capacity and long

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12

Peng, Guangqiang, Yantao Song, Jiyang Wu, Zhidi Huang, Lixin Chen, and Ze Gong. "A control strategy of DC transmission system for offshore wind power based on hybrid converters." Journal of Physics: Conference Series 2865, no. 1 (2024): 012046. http://dx.doi.org/10.1088/1742-6596/2865/1/012046.

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Abstract As the DC transmission system of modular multilevel converters for offshore wind power suffers problems like large volume, heavy weight, difficulty in platform transportation, and high cost, a DC transmission scheme for offshore wind power based on diode rectifier units and modular multilevel converters is put forth in the present work; Meanwhile, the features of active-power coordination, the DC harmonic current, and the AC harmonic current of the hybrid converter in this proposed scheme are analyzed to propose control strategies for active power coordination control, DC harmonic cur

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13

Yang, Yi, Xue-kai Si Ma, Shu-bo Fang, Qing Han, and Zan-dong Zhou. "Analysis of monitoring effect on Hybrid Electric Field for AC/DC Cross Line." Journal of Physics: Conference Series 2378, no. 1 (2022): 012018. http://dx.doi.org/10.1088/1742-6596/2378/1/012018.

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Abstract Electrostatic induction charge which generated by the coupling effect of hybrid electric field of AC/DC cross line and metal object under the transmission line can cause different levels of electric shock injury to human. In order to find out the distribution law of the hybrid electric field and reduce the effect of electrostatic induction, this paper set up shielding lines which paralleled to the AC and DC lines respectively on the outside of the side conductors and along the diagonal of parallelogram at crossing point, then measured the electric field distribution in shielding areas

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14

Liu, Bei, Xu Shen, Ruosong Zhang, Haofei Chen, and Xiaohang Zhou. "Joint Planning Method of Virtual Power Plant for Distributed Generation and Grid in AC-DC Medium and Low Voltage Distribution Network." Journal of Physics: Conference Series 2537, no. 1 (2023): 012021. http://dx.doi.org/10.1088/1742-6596/2537/1/012021.

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Abstract The high proportion of virtual power plants (VPPs) used for distributed generation may cause problems such as power fluctuations and voltage distribution. In contrast, AC/DC hybrid power grid has strong transmission capacity due to its power information transmission. However, Its power grid structure and the location and capacity of VPP have an impact on the consumption capacity of the system, and the relationship between them are closely coupled. In addition, Under different operation modes, power grids of different voltage levels also have great differences. Therefore, the cooperati

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15

Zhou, Yi, Hongmei Luo, Hao Xu, et al. "Coordinated DC voltage control strategy for the receiving end hybrid LCC-VSC system." Journal of Physics: Conference Series 2728, no. 1 (2024): 012058. http://dx.doi.org/10.1088/1742-6596/2728/1/012058.

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Abstract The receiving end hybrid line commutated converter (LCC) — voltage source converter (VSC) system has the obstacle that when an AC fault occurs at the sending LCC side, the DC voltage of the rectifier side will fall, resulting in the power transmission reduction of the whole system. Particularly, when the rectifier side DC voltage falls below the inverter side DC voltage, the power transmission is interrupted, posing a huge threat to the stability of the power grid at both the sending and receiving ends. To tackle these problems, a coordinated DC voltage control strategy for the receiv

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16

Haleem, Naushath M., Athula D. Rajapakse, Aniruddha M. Gole, and Ioni T. Fernando. "A Selective Fault Clearing Scheme for a Hybrid VSC-LCC Multi-Terminal HVdc System." Energies 13, no. 14 (2020): 3554. http://dx.doi.org/10.3390/en13143554.

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A selective fault clearing scheme is proposed for a hybrid voltage source converter (VSC)-line commutated converter (LCC) multi-terminal high voltage direct current (HVdc) transmission structure in which two small capacity VSC stations tap into the main transmission line of a high capacity LCC-HVdc link. The use of dc circuit breakers (dc CBs) on the branches connecting to VSCs at the tapping points is explored to minimize the impact of tapping on the reliability of the main LCC link. This arrangement allows clearing of temporary faults on the main LCC line as usual by force retardation of the

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17

Choi, In-Hyuk, Koo-Yong Shin, Dong-Il Lee, et al. "A Development of Reduced-scale Model to Predict of Environmental Characteristics of AC/DC Hybrid Overhead Transmission Line." Transactions of The Korean Institute of Electrical Engineers 61, no. 5 (2012): 676–82. http://dx.doi.org/10.5370/kiee.2012.61.5.676.

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18

Yoon, Giha, Geunyong Kim, Hark Yoo, Sung-Chang Kim, and Jaein Kim. "Development of Edge Gateway System for Data Acquisition on Transmission Line of AC/DC Hybrid Distribution Network." Transactions of The Korean Institute of Electrical Engineers 73, no. 8 (2024): 1360–68. http://dx.doi.org/10.5370/kiee.2024.73.8.1360.

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19

Yang, Lin, Minghao Wen, Yu Chen, and Xingzhu Wang. "A Novel Protection Scheme for Outgoing Line Fault of AC Transmission Line near the Inverter Station of AC/DC Hybrid Power Grid based on AC Filter Characteristics." Journal of Physics: Conference Series 2247, no. 1 (2022): 012023. http://dx.doi.org/10.1088/1742-6596/2247/1/012023.

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Abstract Compared with traditional AC power grid, the fault characteristics of the AC/DC hybrid power grid are more complex and variable. Hence there is a problem of incorrect action for the fault detection elements used in traditional AC power grid which comes up when an outgoing line fault occurs on the AC transmission line in the vicinity of the inverter station. To distinguish the fault direction under the aforementioned situation, a directional protection scheme based on the characteristics of the AC filter is proposed in this paper. Considering the information can be measured by AC line

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20

Feng, Qian, Ping Zeng, Desheng Zhou, Zhixin Du, Shaodong Guo, and Xiu Yang. "Research on continuous commutation failure suppression strategy for multi-feed DC transmission system considering harmonic characteristic factors." Journal of Physics: Conference Series 2797, no. 1 (2024): 012011. http://dx.doi.org/10.1088/1742-6596/2797/1/012011.

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Abstract Regarding the sustained issues of commutation failures in the hybrid double-fed DC system encompassing Line Commutated Converter High Voltage Direct Current (LCC-HVDC) and Modular Multilevel Converter High Voltage Direct Current (MMC-HVDC, from the perspective of harmonics, the harmonics in the voltage waveform of the AC bus on the inverter side are analyzed. Besides, a commutation failure suppression strategy for the hybrid doubly-fed DC transmission system based on the minimum shutdown area is designed, in which the setting value of the shutdown angle of the harmonic is considered i

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21

Agrawal, Sunilkumar, and Prasanta Kundu. "A unified optimal power flow modeling for VSC-HVDC converter: a novel methodology for optimal installation based on average loadability index." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 41, no. 1 (2021): 283–303. http://dx.doi.org/10.1108/compel-03-2021-0103.

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Purpose This paper aims to propose a novel methodology for optimal voltage source converter (VSC) station installation in hybrid alternating current (AC)/direct current (DC) transmission networks. Design/methodology/approach In this analysis, a unified power flow model has been developed for the optimal power flow (OPF) problem for VSC-based high voltage direct current (VSC-HVDC) transmission network and solved using a particle swarm optimization (PSO) algorithm. The impact of the HVDC converter under abnormal conditions considering N-1 line outage contingency is analyzed against the congestio

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22

Hu, Yang, Heng Zhang, Jing Chen, et al. "A Multi-Functional De-Icing Equipment Using Hybrid Type Parallel Current Source Converters." E3S Web of Conferences 256 (2021): 02016. http://dx.doi.org/10.1051/e3sconf/202125602016.

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This paper has proposed a phase controlled and PWM controlled power current source converter (CSC) for transmission line de-icing. The proposed system consists of a high-power thyristor-based line commutated converter to contribute a majority of the dc de-icing current and a low power PWM CSC to provide a part of the dc de-icing current and to compensate the low order harmonic ac current from the TCR. Thus, the grid current can be highly sinusoidal. In order to avoid the resonance caused by the interaction between TCR and PWM CSC, a virtual impedance control is implemented in the PWM CSC witho

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23

Ndlela, Nomihla Wandile, and Innocent Ewean Davidson. "Network Coordination between High-Voltage DC and High-Voltage AC Transmission Systems Using Flexible AC Transmission System Controllers." Energies 15, no. 19 (2022): 7402. http://dx.doi.org/10.3390/en15197402.

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The strategic intent of the African Union is to develop a “Smart Integrated African Electric Power Super Grid” driven by modern tools and advances in high-voltage direct current (HVDC) engineering and flexible alternating current technology systems (FACTS), which is central in supporting Africa’s sustained economic growth and development. The southern African region, including South Africa, is beset by the critical challenges of perennial load-shedding, which impedes economic growth and aggravates unemployment. This has led to the insecurity of electricity supplies and degraded the quality of

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24

Chen, Zhaohui, Xiaobing Ding, Mingjun Xue, and Hao Zhang. "Relay Protection Method of High Voltage Transmission Line Based on Time-frequency Analysis." Journal of Physics: Conference Series 2442, no. 1 (2023): 012032. http://dx.doi.org/10.1088/1742-6596/2442/1/012032.

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Abstract Since China entered the era of high-voltage AC and DC hybrid power grids, many high-voltage transmission lines have been successfully constructed. Due to the high voltage and long transmission distance of high-voltage transmission lines, once a fault occurs, it will cause serious losses. The research on the relay protection method of high-voltage transmission lines based on time-frequency analysis is proposed, which has important contribution value to ensure the stable development of the power grid. The fault signal of the high-voltage transmission line is extracted based on time-freq

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25

Liu, Bo, Xiaojie Shi, Yalong Li, Fei Fred Wang, and Leon M. Tolbert. "A Line Impedance Conditioner for Saturation Mitigation of Zigzag Transformer in Hybrid AC/DC Transmission System Considering Line Unbalances." IEEE Transactions on Power Electronics 32, no. 7 (2017): 5070–86. http://dx.doi.org/10.1109/tpel.2016.2608864.

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26

Malicki, Pawel, Simon Papenheim, and Mustafa Kizilcay. "Shielding failure analysis of a hybrid transmission line with AC and DC systems on the same tower." Electric Power Systems Research 159 (June 2018): 2–8. http://dx.doi.org/10.1016/j.epsr.2017.11.019.

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27

Jiang, Yingying, Xiaolin Chen, Sui Peng, et al. "Study on Emergency Load Shedding of Hybrid AC/DC Receiving-End Power Grid with Stochastic, Static Characteristics-Dependent Load Model." Energies 12, no. 20 (2019): 3912. http://dx.doi.org/10.3390/en12203912.

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When large-capacity HVDC (high voltage direct current) transmission line blocking occurs in a hybrid AC/DC (alternating current/direct current) power grid, the receiving-end system will encounter a huge power imbalance, which will lead to a frequency drop and redistribution of the power flow, and which may further lead to the overload of other transmission lines, cascading failures and a large-scale blackout. To resolve these problems, an emergency load-shedding strategy for the DC receiving-end system is proposed from the perspective of a quasi-steady state. The proposed method can accurately

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28

Sun, Dong Mei, and Jun Wen. "Researches on Reactive Compensation for Long-Distance and Highcapacity Hybrid Submarine Cable Lines." Advanced Materials Research 433-440 (January 2012): 2406–10. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.2406.

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In order to balance reactive power, reduce line losses, prevent excessive power frequency and switching over-voltage and adjust and control the line voltage etc. The long-distance and high voltage transmission lines are needed reactive power compensation. High voltage overhead transmission lines and high voltage submarine cable (including mixed-submarine) transmission lines are different, for example, the capacitance in the submarine cable lines is larger than in the conventional overhead lines. Therefore, the reactive power compensation on the EHV transmission lines which contains submarine c

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29

Said, Abdelrahman, Mohamed Galal, and M. A. Abd-Allah. "Assessment of the hazard risks on HVDC transmission networks due to lightning strikes and faults." PLOS ONE 19, no. 12 (2024): e0313229. https://doi.org/10.1371/journal.pone.0313229.

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HVDC systems with high voltage and direct current are suitable for reducing electricity losses, during transmission over long distances. However, HVDC lines have the highest probability of failure within a system and can be damaged by different faults or lightning strikes. This paper presents a transient circuit model for the practical Egypt–Saudi Arabia link. The transient potential at different points along the line is calculated under different magnitudes and shapes of lightning strokes. "Additionally, the extent of transient overvoltages at the rectifier station due to shifts in lightning

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Liu, Kang, Baohong Li, and Qin Jiang. "Analysis and Performance Evaluation of CLCCApplications in Key Power Transmission Channels." Energies 18, no. 13 (2025): 3514. https://doi.org/10.3390/en18133514.

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The YZ-ZJ DC transmission project addresses significant power transmission challenges in a specific region’s power grid, which faces unique pressures due to overlapping “growth” and “transition” periods in energy demand. This study focuses on the integration of Controllable-Line-Commutated Converters (CLCCs) into the YZ-ZJ DC transmission project at the receiving end, replacing the traditional LCCs to mitigate commutation failures during AC system faults. The main innovation lies in the development of a hybrid electromechanical–electromagnetic simulation model based on actual engineering param

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Alouache, Houssam Eddine, Samir Sayah, Alessandro Bosisio, Abdellatif Hamouda, Ramzi Kouadri, and Rouzbeh Shirvani. "Optimal Placement of HVDC-VSC in AC System Using Self-Adaptive Bonobo Optimizer to Solve Optimal Power Flows: A Case Study of the Algerian Electrical Network." Electronics 13, no. 19 (2024): 3848. http://dx.doi.org/10.3390/electronics13193848.

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Modern electrical power networks make extensive use of high voltage direct current transmission systems based on voltage source converters due to their advantages in terms of both cost and flexibility. Moreover, incorporating a direct current link adds more complexity to the optimal power flow computation. This paper presents a new meta-heuristic technique, named self-adaptive bonobo optimizer, which is an improved version of bonobo optimizer. It aims to solve the optimal power flow for alternating current power systems and hybrid systems AC/DC, to find the optimal location of the high voltage

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Liu, Lei, Xiaopeng Li, Qin Jiang, et al. "A Multi-Terminal Control Method for AC Grids Based on a Hybrid High-Voltage Direct Current with Cascaded MMC Converters." Electronics 12, no. 23 (2023): 4799. http://dx.doi.org/10.3390/electronics12234799.

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The hybrid high-voltage direct current (HVDC) transmission system with cascaded MMC converters has become a promising alternative for possessing the technical merits of both line-commuted converter (LCC) and voltage source converter (VSC), resulting in favorable characteristics and potential control of good prospect. This paper pays heightened attention to the feasible power and DC voltage control modes of a hybrid HVDC system; characteristics of master–slave control show higher flexibility than the LCC-VSC HVDC system, which demonstrates that the exceptional potential can serve to stability s

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Rekik, Asma, and Ghada Boukettaya. "State Space Modeling and Stability Analysis of a VSC-HVDC System for Exchange of Energy." European Journal of Electrical Engineering 22, no. 6 (2020): 413–26. http://dx.doi.org/10.18280/ejee.220603.

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Nowadays, relevant actors are searching for solutions to produce energy with a low impact on the environment. Indeed, transmitting power via large distances with maintaining low losses is one of the main challenges. To improve electricity communication between countries and offshore wind, a new interconnections line must be built. Therefore, Voltage Source Converter High Voltage Direct Current (VSC-HVDC) transmission is incoming as the exceptive technology in order to address the challenges related to the integration of future offshore wind power plants. In spite of its many advantages, VSC-ba

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34

Peng, Huiming, G. Maksim Popov, Feng Li, and Zhiyu Lu. "Dynamic Identification of Equivalent Parameters of Mathematical Models of Power Electrical Equipment of Electromechanical Power Systems." Journal of Physics: Conference Series 2166, no. 1 (2022): 012024. http://dx.doi.org/10.1088/1742-6596/2166/1/012024.

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Abstract The article describes a method for dynamic identification of AC and DC hybrid power network parameters. The inaccuracy of the parameters of the electromechanical transient simulation model of the power system has caused the obvious difference between the simulation results and the actual measurement, which has restricted its online application. Over the years, the dynamic parameter identification technology based on field test and test has made great progress, but it is far from satisfactory and accurate. There is still a long research journey for the requirements of performance. The

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35

Liu, Hewei, and Guobin Jin. "The Strategy of Continuous Commutation Failure Suppression by Combining Turn-off Angle Compensation and Dynamic Nonlinear VDCOL." Sustainability 16, no. 5 (2024): 2145. http://dx.doi.org/10.3390/su16052145.

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In recent years, with the continuous growth in China’s economy, the continuous advancement of urbanization and industrialization, the contradiction between rapid economic development and the continuous reduction in traditional fossil energy reserves such as coal, oil, and natural gas, the continuous aggravation of environmental pollution has become increasingly prominent. In this era, clean energy power generation technologies such as hydropower, wind power, and solar power generation, which have the advantages of renewability, environmental protection, and economy, have developed rapidly. How

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Montanari, Gian Carlo, Riddhi Ghosh, Robin Ramin, and Debasish Nath. "Insulating Material Development for the Design of Standoff Insulators Fed by Hybrid Voltage." Materials 15, no. 15 (2022): 5307. http://dx.doi.org/10.3390/ma15155307.

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Innovative electrical assets are being developed in transmission and distribution, as well as in electrified transportation, from ships to aerospace. In general, power electronics have to master the whole power supply, being the driver of high specific power, low weight and volume components, in addition to enabling flexible and highly variable power flow. In these conditions, electrical and electronic insulation systems will have to withstand new types and levels of electric stresses, while still maintaining its reliability throughout its whole design life. This paper presents a study on the

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Lotfjou, Azim, Yong Fu, and Mohammad Shahidehpour. "Hybrid AC/DC Transmission Expansion Planning." IEEE Transactions on Power Delivery 27, no. 3 (2012): 1620–28. http://dx.doi.org/10.1109/tpwrd.2012.2194515.

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38

Mehdi, Arif, Syed Jarjees Ul Hassan, Zeeshan Haider, Ho-Young Kim, and Arif Hussain. "Communication-Less Data-Driven Coordination Technique for Hybrid AC/DC Transmission Networks." Energies 18, no. 6 (2025): 1416. https://doi.org/10.3390/en18061416.

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There is a paradigm shift to hybrid (AC/DC) networks that integrate both AC and DC to meet growing energy demands, mitigate global warming, and interconnect distributed energy sources (DERs). However, the unique characteristics of AC/DC faults, the mutual interaction of hybrid lines, the harmonic components of converters/inverters, multiple directions of energy flow, and varying current levels have challenged the existing protection algorithms. Therefore, this paper presents a data-driven coordination AC/DC fault protection algorithm. The algorithm utilizes faulty voltage and current signals t

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Asmare, Lijalem Dires, Belachew Bantyirga Gessesse, and Elias Mandefro Getie. "Techno-Economic Comparisons of HVAC and Simultaneous AC-DC Transmission." Journal of Electrical and Computer Engineering 2022 (January 17, 2022): 1–12. http://dx.doi.org/10.1155/2022/4571596.

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Electric power consumption has been increasing rapidly across the globe; this increase specially accelerated in the last decade. Consequently, existing transmission lines are becoming overloaded beyond their power transfer capability. The inadequacy of the transmission lines has contributed to power interruptions and instability of the power system. Construction of new transmission lines can be a solution to mitigate these problems. However, to build the whole structure of a new transmission line, a huge investment is required. Besides this, environmental concerns would create further barriers

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Mohammad, Tawhidul Alam. "Loadability Comparison between Compensated AC System and Simultaneous AC-DC System." Journal of Electrical and Power System Engineering (e-ISSN: 2582-5712) 6, no. 1 (2020): 20–26. https://doi.org/10.5281/zenodo.3733215.

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Presently, Series compensation technique is being used to increase the load carrying capability of long AC transmission system. Series compensated AC system has a limitation due to sub-synchronous resonance and it can be avoided by converting the pure AC system into simultaneous AC-DC system. In simultaneous AC-DC system AC and DC both form of power can be transferred through same transmission line. Loadability of a transmission line can be improved using both the techniques. A comparative loadability analysis between these two techniques is presented in this paper rigorously. The real behavio

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Mohammad, Tawhidul Alam. "A Comparative Stability Analysis between AC System with Compensation and Simultaneous AC-DC System." Journal of Power Electronics and Devices 6, no. 1 (2020): 23–32. https://doi.org/10.5281/zenodo.3685552.

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<strong>The performance of a long AC transmission system can be improved by the application of series compensation technique. The amount of capacitive compensation is highly restricted due to sub synchronous resonance problem. Due to some limitations of this technique another new concept is emerging which is known as simultaneous AC-DC power transmission system. Simultaneous AC-DC system is a kind of system where DC power is mixed with AC power and transferred through the AC transmission line. Both the techniques have the capability to improve the loadability and stability of existing AC trans

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Hsu, W. T., Z. M. Chen, and C. W. Huang. "Power-flow study for a hybrid AC/DC power system based on the Secant method and the Unified method." Journal of Physics: Conference Series 2345, no. 1 (2022): 012024. http://dx.doi.org/10.1088/1742-6596/2345/1/012024.

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Abstract High voltage direct current (HVDC) transmission benefits cross-provincial long-distance transmission and nonconcurrent interconnection between frameworks than electric power transmission. Due to the different nature of electric power transmission, the power system analysis has evolved from a pure AC power system to a hybrid AC/DC power system. The high-power electrical energy is transmitted under the premise of the hybrid AC/DC power system. It is necessary to monitor the power flow of the hybrid AC/DC power system to avoid substantial economic losses. Therefore, studying the power fl

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Bai, Xuefeng, Yan Zhang, Chang Xu, Zhuyu Zhao, and Jun Wang. "Two-Stage Research on AC/DC Hybrid High-Voltage Distribution Network Based on Network Reconfiguration and SOP Coordinated Control." Journal of Sensors 2022 (August 27, 2022): 1–11. http://dx.doi.org/10.1155/2022/2401475.

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DC power grid has the advantages of large power supply capacity, easy access to clean energy, low loss, and easy power control. With the increasing penetration rate of distributed generation and DC load in low-voltage transmission network, the traditional radial AC distribution form develops into AC-DC hybrid form. Large-scale distributed energy access is an important feature of future distribution system. Aiming at the AC-DC hybrid distribution system with soft tie-in switch and voltage source converter, considering the network congestion caused by large-scale access of distributed energy, a

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Ayiad, Motaz, Helder Leite, and Hugo Martins. "State Estimation for Hybrid VSC Based HVDC/AC Transmission Networks." Energies 13, no. 18 (2020): 4932. http://dx.doi.org/10.3390/en13184932.

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As the integration of High Voltage Direct Current (HVDC) systems on modern power networks continues to expand, challenges have appeared in different fields of the network architecture. In the Supervisory, Control and Data Acquisition (SCADA) field, software and toolboxes are expected to be modified to meet the new network characteristics. Therefore, this paper presents a unified Weighted Least Squares (WLS) state estimation algorithm suitable for hybrid HVDC/AC transmission systems, based on Voltage Source Converter (VSC). The mathematical formulas of the unified approach are derived for model

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Mohammad, Tawhidul Alam, Hassan Eon Shakib, and Rana Mamon. "Maximum Power Flow Analysis of Simultaneous AC-DC Power Transmission System." Journal of Control and Instrumentation Engineering e-ISSN: 2582-3000 5, no. 3 (2019): 27–39. https://doi.org/10.5281/zenodo.3563515.

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<em>Simultaneous AC-DC system can be used to increase the power flow capacity of existing AC transmission system. Present analysis shows that simultaneous AC-DC system can be operated at larger transmission angle compare to pure AC system. In AC system, power flow increases with the increase of transmission angle. But in simultaneous, AC-DC system power flow nature with respect to angle is a bit different from pure AC system. That is, initially power flow increases with the increase of transmission angle and after certain angle the power flow decreases. It is seen that the maximum power flow o

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Gandotra, Rupika, Kanika, and Kirti Pal. "The VSC-HVDC Transmission System Performance Assessment." Journal of Physics: Conference Series 2570, no. 1 (2023): 012025. http://dx.doi.org/10.1088/1742-6596/2570/1/012025.

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Abstract As the use of renewable resources increases the transfer of power from remote area to consumer is a big challenge. Therefore, Voltage Source Converter High Voltage Direct Current (VSC-HVDC) transmission is gaining more popularity for integration of renewable energy generators to the consumers using smart grid. Even after many advantages of HVDC transmission system it is not used popularly due to unexpected instability in the system. However recent developments in semiconductor devices and control techniques the HVDC link operation in transmission system becomes easier. In this paper V

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Woodford, D. "Secondary arc effects in AC/DC hybrid transmission." IEEE Transactions on Power Delivery 8, no. 2 (1993): 704–11. http://dx.doi.org/10.1109/61.216878.

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Liu, Xiao Xia, Jun Wen, Wei Yang Yin, and Jia Liang Wen. "Comparison of External Insulation Level between AC and DC Overhead Transmission Lines." Applied Mechanics and Materials 347-350 (August 2013): 1353–57. http://dx.doi.org/10.4028/www.scientific.net/amm.347-350.1353.

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It is important to choose suitable insulator strings that matching the voltage level when trying to change an AC transmission line into a DC one. Historically based, most published works discuss the way of determining the number or the length of insulators for overhead transmission lines, which mainly consider about voltage levels, pollution classes, insulator types and their pollution performances. It calls for too much work for a line restructuring project. In order to simplify the work, a comparison of the choosing of insulator strings between AC and DC overhead transmission line is made in

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Zhou, Bao Rong, Xiao Ming Jin, Jian Bin Chen, Xin Ze Wang, and Yuan Zeng. "Risk Assessment for AC/DC Hybrid Power System." Applied Mechanics and Materials 392 (September 2013): 507–11. http://dx.doi.org/10.4028/www.scientific.net/amm.392.507.

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According to the structure and characteristics of HVDC system, this paper used the FTA (fault tree analysis) method to divide fault results of DC system into five transmission capacities: 0%, 25%, 50%, 75% and 100%, calculated results by incorporating DC system into AC system and used Monte Carlo simulation method to evaluate reliability of AC/DC hybrid system. Whats more, this paper established the model, algorithm and index system for risk assessment of AC/DC hybrid power system and developed corresponding software. Finally, an example was given to prove the correctness and validity of the p

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Manickam, Raju, and Subramaniam Nettiampalayam Palaniappan. "Upgrading transmission line capability by AC–DC conversion." Computers & Electrical Engineering 68 (May 2018): 616–28. http://dx.doi.org/10.1016/j.compeleceng.2018.01.031.

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