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Journal articles on the topic 'And Proposed link protection'

Author: Grafiati

Published: 5 June 2025

Last updated: 15 July 2025

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1

Dinesh, Kumar, Kumar Rajiv, and Sharma Neeru. "A Proactive Link Based Fast Recovery Strategy for Survival Elastic Optical Networks." International Journal of Engineering and Advanced Technology (IJEAT) 9, no. 3 (2020): 4018–22. https://doi.org/10.35940/ijeat.C6459.029320.

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In this paper, we proposed a link based fast connection recovery strategy. A backup path either reserved in advance or searched dynamically after the failure occurred in the network. Both these recovery strategy required large backup capacity. We analyse three network parameters such as recovery time (RT), bandwidth blocking probability (BBP), and network capacity utilization ratio (NCU) for randomly generated source to destination request for three topologies that is COST239, ARPANET and NSFNET and compare the results for shared link protection (SLP), dedicated link protection (DLP), and our

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2

Abbas, Huda Saleh, and Mark A. Gregory. "Passive Optical Network Survivability: Protection, Detection and Restoration." International Journal of Information, Communication Technology and Applications 1, no. 1 (2015): 128–42. http://dx.doi.org/10.17972/ajicta20151115.

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Passive optical network (PON) technologies have received increasing attention as demand for fibre access networks has grown. Enhancing fibre access network reliability provides lower operational costs, and improves customer satisfaction. This paper discusses PON survivability including protection schemes for the fiber link and the Optical Line Terminal (OLT), the exciting monitoring techniques of the fiber link, and the effect of reducing the restoration time on the network availability. The main contribution of this study is to provide two protection schemes namely OLT-only-protected and OLT-

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Mohapatra, Baibaswata, Rajendra K. Nagaria, and Sudarshan Tiwari. "Guaranteed Protection in Survivable WDM Mesh Networks – New ILP Formulations for Link Protection and Path Protection." Journal of Telecommunications and Information Technology, no. 4 (June 28, 2023): 108–14. http://dx.doi.org/10.26636/jtit.2011.4.1187.

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In this paper we propose new simple integer linear programs (ILPs) formulations for minimizing capacity (in wavelength link) utilization in survivable WDM network. The study examines the performance of shared based protection schemes, such as path protection scheme and link protection scheme under single fiber failure. The numerical results obtained show a reduction in capacity utilization using random traffic compared to the reported ILP formulation. We also present the results using Poisson’s traffic to identify the frequently used links for the widely used NSF network. The proposed work not

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4

Alhadrawi, Zaid, M. N. Abdullah, and Hazlie Mokhlis. "A NEW METHOD TO ENHANCE THE DIFFERENTIAL PROTECTION OF THE MICROGRID BY SELF-BACKUP PROTECTION." ASEAN Engineering Journal 12, no. 3 (2022): 19–25. http://dx.doi.org/10.11113/aej.v12.17559.

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Although the differential protection schemes consider as one of the effective types to protect the microgrid, this method may result in inaccurate performance because of the loss of communication link connecting the two ends of the line or other reasons. Therefore, the use of backup protection can lead to more accurate results. In this paper, self-backup protection is presented to cover the mal-operation of main protection. In this scheme, a new R-ratio method is defined based on the summation of the three-phase currents and the minimum of the three-phase voltages to overcome the low fault cur

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Seo, Jongpil, Hyeonsu Kim, Jongmin Ahn, and Jaehak Chung. "Macrocell Protection Interference Alignment in Two-Tier Downlink Heterogeneous Networks." Mobile Information Systems 2017 (2017): 1–13. http://dx.doi.org/10.1155/2017/7410546.

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Conventional interference alignment (IA) has been developed to mitigate interference problems for the coexistence of picocells and macrocells. This paper proposes a macrocell protection interference alignment (MCP-IA) in two-tier MIMO downlink heterogeneous networks. The proposed method aligns the interference of the macro user equipment (UE) and mitigates the interference of the pico-UEs with a minimum mean squared error interference rejection combining (MMSE-IRC) receiver. Compared to the conventional IA, the proposed MCP-IA provides an additional array gain obtained by the precoder design o

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Ali, Abbasi, Kazemi Karegar Hossein, and Soleymani Aghdam Tohid. "Inter-trip links incorporated optimal protection coordination." International Journal of Electrical and Computer Engineering (IJECE) 10, no. 1 (2020): 72–79. https://doi.org/10.11591/ijece.v10i1.pp72-79.

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Due to advances in smart grid, different communication links as delay, inter-trip and activation are used between relays to enhance the protection system performance. In this paper, the effect of inter-trip links on optimal coordination of directional overcurrent relays (DOCRs) is analytically investigated and modelled. Moreover, an index is proposed to find the optimum locations for inter-trip link installation to reach the minimal fault clearance times under the selectivity constraint. Then a method is proposed to determine the candidate locations of inter-trip links and the associated reduc

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7

Nobakhti, Seyyed Mohammad, Abbas Ketabi, and Miadreza Shafie-khah. "A New Impedance-Based Main and Backup Protection Scheme for Active Distribution Lines in AC Microgrids." Energies 14, no. 2 (2021): 274. http://dx.doi.org/10.3390/en14020274.

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Microgrids active characteristics such as grid-connected or islanded operation mode, the distributed generators with an intermittent nature, and bidirectional power flow in active distribution lines lead to malfunction of traditional protection schemes. In this article, an impedance-based fault detection scheme is proposed as the main protection of microgrids by applying the proposed equivalent circuits for doubly-fed lines. In this scheme, relay location data and positive sequence voltage absolute value of the other end of the line are used. It can detect even high impedance faults in grid-co

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Abbasi, Ali, Hossein Kazemi Karegar, and Tohid Soleymani Aghdam. "Inter-trip links incorporated optimal protection coordination." International Journal of Electrical and Computer Engineering (IJECE) 10, no. 1 (2020): 72. http://dx.doi.org/10.11591/ijece.v10i1.pp72-79.

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Due to advances in smart grid, different communication links as delay, inter-trip and activation are used between relays to enhance the protection system performance. In this paper, the effect of inter-trip links on optimal coordination of directional overcurrent relays (DOCRs) is analytically investigated and modelled. Moreover, an index is proposed to find the optimum locations for inter-trip link installation to reach the minimal fault clearance times under the selectivity constraint. Then a method is proposed to determine the candidate locations of inter-trip links and the associated reduc

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9

Abdo Asaad, Hasan Abdul Raqib, and Belal Al-Fuhaidi. "An Efficient Routing Method for Protection Data Flow in the MPLS Network." Journal of Science and Technology 22, no. 2 (2018): 25–39. http://dx.doi.org/10.20428/jst.v22i2.1286.

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This paper presents an efficient method for rerouting traffic in the Multiprotocol Label Switching (MPLS) network, when a fault occurs in the working link. The method has been designed to handle both single and multiple faults based on the protection switching and rerouting techniques. The proposed method leads to less packets loss, has better Packet Delivery Ratio (PDR), good throughput and eliminates packet disorder. The proposed method has been simulated using the Network Simulator (NS2) version 2.34 and the simulation results have shown that the proposed method significantly improves the n

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Savva, Giannis, Konstantinos Manousakis, and Georgios Ellinas. "Confidentiality meets protection in elastic optical networks." Optical Switching and Networking 42 (November 1, 2021): 1–11. https://doi.org/10.1016/j.osn.2021.100620.

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This work considers the joint problem of securing confidential demands against eavesdropping attacks and protecting the network against link failures in elastic optical networks (EONs). Network coding is used to provide security for confidential connections by encrypting the data through XOR operations at the physical layer with other established connections in the network. Backup paths are also computed for protecting the primary path of the confidential connections, while ensuring that the level of security for the confidential demands is preserved in case of a link failure on the primary pa

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11

Wang, Yuxue, Wei Liu, Shaolin Jiao, Zeya Fang, Yiquan Li, and Minghao Wen. "Substation-area Backup Protection Scheme for the Failure of 10kV Line Protection Device." Journal of Physics: Conference Series 2087, no. 1 (2021): 012009. http://dx.doi.org/10.1088/1742-6596/2087/1/012009.

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Abstract The research on wide-area backup protection for high-voltage transmission lines has made certain progress in recent years, but there are few reports published on substation-area backup protection for low-voltage 10kV transmission lines. Based on the characteristics of shared information in intelligent substation, a substation-area backup protection scheme to deal with the failure of 10kV line protection device is proposed in this paper. This scheme uses the device self-test information and heartbeat mechanism to monitor the operation status of 10kV line protection devices; to realize

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Msimang, Asante, Shelley Edwards, Sergio Alloggio, and Roman Tandlich. "Human well-being and animal welfare: Is there an ethical link to be implemented from the COVID-19 pandemic into the practice of emergency management?" American Journal of Disaster Medicine 19, no. 3 (2024): 237–50. https://doi.org/10.5055/ajdm.0481.

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Through the definition of risk management and its interpretation in multidimensional protection of humans and animals in emergencies and during disasters, in this article, the authors focus on the ethical links between human well-being and animal welfare in emergency and disaster risk management. Coronavirus disease 2019 and its impact on animal welfare are used to consistently demonstrate the link between human well-being and animal welfare. Examples of international legal and ethical norms are provided to demonstrate the need for protecting humans and animals in emergencies and disasters, su

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13

Kurimoto, Takashi, Midori Terasawa, Sho Shimizu, Satoru Okamoto, and Naoaki Yamanaka. "Fast Fault Recovery Method with Preestablished Recovery Table for Reliable Wide Area Layer-2 Network." ISRN Communications and Networking 2011 (October 23, 2011): 1–8. http://dx.doi.org/10.5402/2011/941605.

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Recently, wide area Ethernet, which provides virtual connections between company branches by using Ethernet technology, has become wide spread. Ethernet originally lacked fault recovery mechanisms required in wide area networks (WANs) since it originated as local area network (LAN) technology. Protection mechanism against link or node failure is proposed in Ethernet network, but many frame losses are inevitable during the switch over to the backup path. Therefore, to improve reliability of wide area Ethernet, a fault recovery method with few frame losses is required. This paper proposes a fast

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14

Xia, Zhixin, Zhangqi Zheng, Lexin Bai, Xiaolei Yang, and Yongshan Liu. "A Research Approach to Port Information Security Link Prediction Based on HWA Algorithm." Applied Sciences 14, no. 22 (2024): 10646. http://dx.doi.org/10.3390/app142210646.

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For the protection of information security, link prediction, as a basic problem of network science, has important application significance. However, most of the existing link prediction algorithms rely on the node information of the graph structure, which is not applicable in some graph structure data involving privacy. At the same time, most of the algorithms only consider the general graph structure and do not fully consider the high-order information in the graph. Because of this, this paper proposes an algorithm called hypergraph-based link prediction with self-attention (HWA) to solve the

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15

Jayasawal, Kishan, and Khagendra Thapa. "An Enhanced Low Voltage Ride-Through Control Scheme of a DIFG based WTG Using Crowbar and Braking Chopper." Journal of the Institute of Engineering 16, no. 1 (2021): 61–67. http://dx.doi.org/10.3126/jie.v16i1.36537.

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The grid codes define low voltage ride-through (LVRT) as capability of wind turbine generator (WTG) to support the grid voltage by injecting reactive power and suppress the rise of DC-link voltage and inrush rotor current in the rotor side converter (RSC) of the doubly fed induction generator (DFIG) during a fault. Moreover, the rotor current increases significantly during severe disturbances if any protection schemes are not employed. Therefore, the protection schemes must be used to avoid the damage to the converter during a fault. This paper proposes an enhanced LVRT control scheme of a DFI

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16

Azari, Aliakbar, Abass Saberi Noghabi, Farhad Zishan, Oscar Danilo Montoya, and Alexander Molina-Cabrera. "Evaluating the Effect of the Communication Link of the Relays on the Operation Time of the Protection System." Energies 16, no. 6 (2023): 2692. http://dx.doi.org/10.3390/en16062692.

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In case of an error in the power system, it is the duty of the protection relays to isolate the faulty part from the rest of the system as soon as possible. Overcurrent and distance relays are usually used to protect the transmission and super distribution systems. The optimum coordination of these relays is very important. In this article, communication links are used to improve the optimal coordination of overcurrent and distance relays. In the proposed plan, the overcurrent relays on both sides of the line are equipped with a communication link for immediate action in the event of an error.

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17

Ben Halima, Nadhir, Dzmitry Kliazovich, and Fabrizio Granelli. "Service-Aware Retransmission Control in Cellular Networks." Journal of Computer Systems, Networks, and Communications 2010 (2010): 1–8. http://dx.doi.org/10.1155/2010/256964.

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This paper proposes a service-aware cross-layer approach between application/transport layers on the mobile terminal and link layer on the wireless base station to enable dynamic control on the level of per-packet error protection for multimedia data streams. Specifically, in the context of cellular networks, the proposed scheme enables the mobile terminal to specify to the base station the desired level of Hybrid ARQ (HARQ) protection by using an in-band control feedback channel. Such protection is dynamically adapted on a per-packet basis and depends on the perceptual importance of different

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18

Pattanaik, P. R., S. Pati, and S. K. Sanyal. "Transient Monitoring Function based Fault Classifier for Relaying Applications." International Journal of Electrical and Computer Engineering (IJECE) 8, no. 6 (2018): 4089–95. https://doi.org/10.11591/ijece.v8i6.pp4089-4095.

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This paper proposes Transient monitoring function (TMF) based fault classification approach for transmission line protection. The classifier provides accurate results under various system conditions involving fault resistance, inception angle, location and load angle. The transient component during fault is measured by TMF and appropriate logics applied for fault classification. Simulation studies using MATLAB®/SIMULINK™ are carried out for a 400 kV, 50 Hz power system with variable system conditions. Results show that the proposed classifier has high classification accuracy. The met

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19

Li, Chung-Yi, Ching-Hung Chang, and Zih-Guei Lin. "Hybrid Ring- and Tree-Topology RoF Transmission System with Disconnection Protection." Photonics 8, no. 11 (2021): 515. http://dx.doi.org/10.3390/photonics8110515.

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This paper proposes a hybrid ring- and tree-topology radio over fiber (RoF) transmission system with self-disconnection protection that can support the high distribution density of base stations (BSs) in a metropolitan area and strengthen the network quality of service through self-disconnection protection. The number of supportable BS in the system can be increased significantly by integrating the time- and wavelength-division multiplexing techniques and properly utilizing a new-generation single-line bidirectional add/drop multiplexer (SBOADM) into the proposed system. Moreover, when the rin

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20

Subkhanverdiev, K. S., K. V. Kulagin, and A. A. Agaltsov. "ENHANCED EFFICIENCY OF PROTECTION OF RAILWAY POWER NETWORK SECTIONS BY SECTIONING POSTS WITH DISCONNECTORS." World of Transport and Transportation 16, no. 4 (2018): 66–73. http://dx.doi.org/10.30932/1992-3252-2018-16-4-5.

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ABSTRACT The article considers features of a scheme of protection of sections of a power network with disconnectors at a sectioning post (SP), its advantages and disadvantages are shown. A solution is proposed that allows improving the scheme under study and enhancing reliability of a traction power supply system. The power circuit of a two-track section of the catenary with disconnectors and a switch at SP, schedules of selectivity of protection of switches of adjacent traction substations and switch of SP, and also their time characteristics are shown. The sequence of actions connected with

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21

Shahid, Muhammad Umair, Thamer Alquthami, Abubakar Siddique, Hafiz Mudassir Munir, Saqlain Abbas, and Zulkarnain Abbas. "RES Based Islanded DC Microgrid with Enhanced Electrical Network Islanding Detection." Energies 14, no. 24 (2021): 8432. http://dx.doi.org/10.3390/en14248432.

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An electrical islanding detection method for DC microgrid (MG) is proposed in this paper. Unlikely conventional AC MG system protection has been challenging for the DC MG system. The goal of the proposed scheme is to detect the islanding intelligently within the agent nodes. The proposed islanding detection technique detects the electrical link failure intelligently, and if any electrical link failure occurs, then the proposed technique maintains the MG operation and load sharing. Islanding detection is carried out using an injection signal and utilizes the existing communication network to ch

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22

Rabkowski, Jacek, Mariusz Zdanowski, Mietek Nowak, and Roman Barlik. "Fault Protection System for Current Source Inverter with Normally on SiC JFETs." Materials Science Forum 679-680 (March 2011): 750–53. http://dx.doi.org/10.4028/www.scientific.net/msf.679-680.750.

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This paper describes a simple fault protection system for Current Source Inverter built with normally-on SiC JFETs. Because all transistors are in on-state after loss of the gate drive(s) supply, list of possible fault modes is extended in reference to standard inverters. That is also why an additional normally off switch is introduced in the DC link. Operation principles of the protection system which follows the drain-source voltages of JFETs and the current of the DC link are presented. The 2kVA/100kHz model of the inverter equipped with the proposed system is validated via various laborato

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Bui, Duong Minh, Shi-Lin Chen, Keng-Yu Lien, and Jheng-Lun Jiang. "A Generalised Fault Protection Structure Proposed for Uni-grounded Low-Voltage AC Microgrids." International Journal of Emerging Electric Power Systems 17, no. 2 (2016): 69–89. http://dx.doi.org/10.1515/ijeeps-2015-0151.

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Abstract This paper presents three main configurations of uni-grounded low-voltage AC microgrids. Transient situations of a uni-grounded low-voltage (LV) AC microgrid (MG) are simulated through various fault tests and operation transition tests between grid-connected and islanded modes. Based on transient simulation results, available fault protection methods are proposed for main and back-up protection of a uni-grounded AC microgrid. In addition, concept of a generalised fault protection structure of uni-grounded LVAC MGs is mentioned in the paper. As a result, main contributions of the paper

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Kim, Chul-Min, Hyun-Soo Yoon, Jong-Soo Kim, and Nam-Joon Kim. "Highly Reliable Short-Circuit Protection Circuits for Gallium Nitride High-Electron-Mobility Transistors." Electronics 13, no. 7 (2024): 1203. http://dx.doi.org/10.3390/electronics13071203.

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This paper presents a circuit for detecting and protecting against short circuits in E-mode gallium nitride high-electron-mobility transistors (GaN HEMTs) and analyzes the protection performance of the circuit. GaN HEMTs possess fast switching characteristics that enable high efficiency and power density in power conversion devices. However, these characteristics also pose challenges in protecting against short circuits and overcurrent situations. The proposed method detects short-circuit events by monitoring an instantaneous drop in the DC bus voltage of a circuit with GaN HEMTs applied and u

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En-nay, Zineb, Ismail Moufid, Aboubakr El Makrini, and Hassane El Markhi. "Improved crowbar protection technique for DFIG using fuzzy logic." International Journal of Power Electronics and Drive Systems (IJPEDS) 13, no. 3 (2022): 1779. http://dx.doi.org/10.11591/ijpeds.v13.i3.pp1779-1790.

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<span lang="EN-US">A doubly-fed induction generator is the most widely used as a wind turbine generator. Due to its drawbacks, doubly fed induction generator (DFIG) is extremely sensitive to grid disturbances, and the fragility of some components which are costly to the producer. Also, its acquisition value is very high in terms of maintenance time or component cost, causing substantial harm to both the energy production and power supplier. It is required that the DFIG components must be protected, especially power electronics devices and DC-Link capacitor. Therefore, this paper presents

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Gao, Mei. "Reliability and Cost Performance Ratio Analysis on EPON Protection Networking of Power Distribution Communication Network Access Layer." Applied Mechanics and Materials 494-495 (February 2014): 1602–5. http://dx.doi.org/10.4028/www.scientific.net/amm.494-495.1602.

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Based on the reliability theory of power communication network, reliability analytic methods arc proposed for Ethernet passive optical network (EPON) protection networking of the power distribution communication access layer. By using the system availability theory, the reliability and cost of EPON protection networking arc quantitatively analyzed for the access layer of four kinds of power distribution communication network, i. c., tree-type network of single power supply redundancy protection, hand-in-hand network of whole chain protection, dual-power dual-T network of full link protection,

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Sankhla, Shweta, Dr M. K. Bhaskar, and Manish Parihar. "Comparative Analysis of Anti-Islanding Prevention Technique in Grid Connected PV System." International Journal for Research in Applied Science and Engineering Technology 11, no. 8 (2023): 727–31. http://dx.doi.org/10.22214/ijraset.2023.55223.

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Abstract: This paper presents a novel islanding prevention scheme of Grid-Connected PV Systems in Matlab/ Simulink based on monitoring the dc-link voltage of the PV inverter. A 100kW PV System equipped with islanding protection like frequency relays, a ROCOF relay, and respectively the proposed dc-link voltage relay are simulated under the conditions of islanding and the detection time for all these AI techniques are compared.

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Lu, Yanfei, Zhilin Deng, Qinghe Gao, and Tao Jing. "Graph Embedding-Based Sensitive Link Protection in IoT Systems." Wireless Communications and Mobile Computing 2022 (April 30, 2022): 1–15. http://dx.doi.org/10.1155/2022/2432351.

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In the Internet of Things (IoT), massive interconnected intelligent terminal devices constitute diverse networks. Link prediction can serve as a powerful inference attack to speculate the sensitive links in the networks, posing a security threat to entity privacy in IoT. Most antilink prediction methods reduce the prediction ability of link prediction models through link disturbance to hide sensitive links but fail to consider the impact of node attributes on link prediction. This paper proposes a sensitive link protection method based on graph embedding (SLPGE) to combat link prediction attac

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Wagh, Amruta Narendra. "Amplitude Based Pilot Protection for Transmission Line." International Journal for Research in Applied Science and Engineering Technology 11, no. 6 (2023): 2089–101. http://dx.doi.org/10.22214/ijraset.2023.53989.

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Abstract: Distance protection and differential protection schemes are the two primary types of protection schemes employed in gearbox line protection today. However, industrial practice has shown that commonly used gap prevention techniques are limited in tripping speed and selectivity. The timing of the samples in each of the two relays located at the gearbox line terminals also affects the differential protection mechanism. On the other hand, pilot safety schemes using only the communication link to exchange local decision-making about fault conditions are not affected. These method include

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Bakare, B. I., V. E. Idigo, and S. U. Nnebe. "Interference Management for the Coexistence of DTTV and LTE Systems within the Proposed Digital Dividend Band in Nigeria." European Journal of Electrical Engineering and Computer Science 5, no. 6 (2021): 1–9. http://dx.doi.org/10.24018/ejece.2021.5.6.366.

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This paper seeks to present the Interference Management for the Coexistence of DTTV and LTE Systems within the proposed digital dividend band in Nigeria. The study focused on LTE Down-link (DL) signal from the nearest cell site interfering with the Digital Terrestrial Television (DTTV) fixed outdoor receiving antenna in Port Harcourt, Nigeria. The qualitative signal analysis of the DTTV systems is essential as DTTV system cannot start to operate in the newly formed frequency band without the evaluation of the possible harmful influence of the coexisting systems. This research work investigated

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Shao, Qi, and Yu Shao. "High-Reliable WDM Optical Access Network Expanding by Double-Fiber-Tangent Ring." Applied Mechanics and Materials 644-650 (September 2014): 4529–32. http://dx.doi.org/10.4028/www.scientific.net/amm.644-650.4529.

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A WDM optical access network architecture based on double-fiber-tangent rings is proposed. With the proposed architecture, both data convergence and link protection can be realized. OLT and RNs can automatically switch to protection mode to overcome fiber failure occurring no matter in both primary ring (PR) and sub-ring (SR). The RNs designed as tangent points can realize wavelengths adding and dropping between PR and SR, and they also can realize network expansion through adding more wavelengths. In addition to this, the design of double-fiber ring can better the survivability and self-heali

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Duan, Yonghui, Ang Shen, Xinzheng Wang, Jie Xu, and Jiaojiao He. "Research on Latching Current Limiter Circuit of Aerospace Power System." Journal of Physics: Conference Series 2239, no. 1 (2022): 012008. http://dx.doi.org/10.1088/1742-6596/2239/1/012008.

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Abstract The input terminal of the aerospace power system is connected with surge suppression and overcurrent protection circuits. However, prior art methods have many demerits such as complex circuits, high surge currents, and slow response of overcurrent protection. Hence, this paper proposes a novel latching current limiter (LCL) circuit with both surge suppression and over-current protection functions. When over-current occurs, the circuit snap into the current limiting state within the adjustable time-delay period. When the over-current fault despairs during the time-delay period, the LCL

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Shi, Naiyu, He Li, Yongkang Yang, et al. "Enhancing Spraying Performance with Active Stability Control in Multi-Link Mechanisms." Machines 13, no. 2 (2025): 104. https://doi.org/10.3390/machines13020104.

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This study proposes an active stability control method for the multi-link mechanism of spraying equipment to enhance its spraying performance. Traditional spraying operations typically focus on protecting only the tops of crops, whereas the multi-link mechanism can adjust the angle and position of the nozzles in coordination, achieving comprehensive protection for the crops. However, the characteristic of uneven output speed in the multi-link mechanism results in variations in the spraying amount at different positions. To address this issue, this study developed a method for actively adjustin

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Vanamoorthy, Muthumanikandan, Valliyammai Chinnaiah, and Harish Sekar. "A Hybrid Approach for Providing Improved Link Connectivity in SDN." International Arab Journal of Information Technology 17, no. 2 (2019): 250–56. http://dx.doi.org/10.34028/iajit/17/2/13.

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Software-Defined Networking (SDN) is a unique approach to design and build networks. The networks services can be better handled by administrators with the abstraction that SDN provides. The problem of re-routing the packets with minimum overhead in case of link failure is handled in this work. Protection and restoration schemes have been used in the past to handle such issues by giving more priority to minimal response time or controller overhead based on the use case. A hybrid scheme has been proposed with per-link Bidirectional forwarding mechanism to handle the failover. The proposed metho

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Li, Hong Hui, and Xue Liang Fu. "Optimization of -Cycle Placement for Differentiated Levels of Protection." Mathematical Problems in Engineering 2013 (2013): 1–5. http://dx.doi.org/10.1155/2013/920564.

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This paper develops a new scalable and efficient model for the design ofp-cycles with the differentiated levels of node protection. The proposed model allows the indicated level of node survivability ranging from 0% to 100%, which could facilitate a carrier offer node-failure survivability (and hence availability) on a differentiated service basis. To designp-cycles, an integer linear program (ILP) is usually formulated with the prerequisite of a prior enumeration of all possiblep-cycle candidates. A huge number of candidates may exist in a large-scale network. Thus, the resulting ILP becomes

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Pai, Kung-Jui. "Dual Protection Routing Trees on Graphs." Mathematics 11, no. 14 (2023): 3255. http://dx.doi.org/10.3390/math11143255.

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In IP networks, packet forwarding is destination-based and hop-by-hop, and routes are built as needed. Kwong et al. introduced a protection routing in which packet delivery to the destination node can proceed uninterrupted in the event of any single node or link failure. He then showed that “whether there is a protection routing to the destination” is NP-complete. Tapolcai found that two completely independent spanning trees, abbreviated as CISTs, can be used to configure the protection routing. In this paper, we proposed dual protection routing trees, denoted as dual-PRTs to replace CISTs, wh

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Bui, Duong Minh, Duy Phuc Le, and Hieu Minh Nguyen. "Development of a Novel Backup Fault Protection Algorithm for Low-Voltage DC Microgrids based on Local Measurements and Chi-square Statistics." Engineering, Technology & Applied Science Research 14, no. 4 (2024): 15106–20. http://dx.doi.org/10.48084/etasr.7022.

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A direct-current microgrid (MG) can be susceptible to extremely high fault currents contributed by the output filter capacitors of power converters and can also face protection challenges because of the non-zero crossing of fault currents. In a Low-Voltage Direct Current (LVDC) MG, low-fault-tolerance converters such as boost converters and bidirectional converters mostly require a fast and adaptable fault protection scheme that can detect and clear quickly faults irrespective of a wide range of fault impedances in the system. Several current- and voltage-derivative-based protection methods wi

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Xu, Zhengjia, Ivan Petrunin, and Antonios Tsourdos. "Modeling and Performance Analysis of Opportunistic Link Selection for UAV Communication." Sensors 21, no. 2 (2021): 534. http://dx.doi.org/10.3390/s21020534.

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In anticipation of wide implementation of 5G technologies, the scarcity of spectrum resources for the unmanned aerial vehicles (UAVs) communication remains one of the major challenges in arranging safe drone operations. Dynamic spectrum management among multiple UAVs as a tool that is able to address this issue, requires integrated solutions with considerations of heterogeneous link types and support of the multi-UAV operations. This paper proposes a synthesized resource allocation and opportunistic link selection (RA-OLS) scheme for the air-to-ground (A2G) UAV communication with dynamic link

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Duan, Huabin, Jie Yang, and Huanjun Yang. "A Blockchain-Based Privacy Protection Application for Logistics Big Data." Journal of Cases on Information Technology 24, no. 5 (2022): 1–12. http://dx.doi.org/10.4018/jcit.295249.

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Logistics business is generally managed by logistics orders in plain text, and there is a risk of disclosure of customer privacy information in every business link. In order to solve the problem of privacy protection in logistics big data system, a new kind of logistics user privacy data protection scheme is proposed. First of all, an access rights management mechanism is designed by combining block chain and anonymous authentication to realize the control and management of users' access rights to private data. Then, the privacy and confidentiality protection between different services is real

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Ihor, Vikovych, Krainyk Ljubomyr, Zinko Roman, Popovych Vitalij, and Horbai Orest. "Design of impact dampers for transporting cargoes by two-link vehicles." Eastern-European Journal of Enterprise Technologies 2, no. 7 (110) (2021): 85–94. https://doi.org/10.15587/1729-4061.2021.229447.

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This paper considers the influence of the transitional modes of movement (acceleration, braking) of a multi-link vehicle on the vibration protection of transported non-fixed or partially fixed cargoes. The impact phenomenon, in this case, can be strengthened by the existence of coupling mechanisms between the links of a multi-link vehicle. To reduce such horizontal impact loads, it is advisable to use elements with viscoelastic damping in the coupling devices of a multi-link vehicle. To study the actual impact phenomena during the transportation of non-fixed or partially fixed cargoes under th

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Gu, Yu Feng, and Jian Wen Ren. "Research on Setting Adjustment of Line Protection." Advanced Materials Research 960-961 (June 2014): 989–94. http://dx.doi.org/10.4028/www.scientific.net/amr.960-961.989.

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In order to avoid incorrect setting from being a hidden fault source which threats the stable operation of power system, setting adjustment algorithm of line protection is proposed. Through setting detection and setting rectification the algorithm amends incorrect setting and reduces the number of mismatch protection to the greatest extent. A method of calculating high step coverage of interphase current protection based on node impedance matrix is also proposed in this paper. The example shows the proposed algorithm is practical.

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Yu, Jingqiu, Zheren Zhang, and Zheng Xu. "A Local Protection and Local Action Strategy of DC Grid Fault Protection." Energies 13, no. 18 (2020): 4795. http://dx.doi.org/10.3390/en13184795.

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Fast detection and isolation of direct current (DC) faults are key issues for DC grids. Therefore, it is very necessary to study the fault protection principle for DC grids. This paper firstly presents the main difficulties in DC fault protection. Then, a local protection and local action strategy for isolating the DC faults is proposed. To illustrate the performance of the proposed protection strategy, a four-terminal DC grid with the hybrid high voltage direct current (HVDC) circuit breakers (HVDC CBs) is constructed in the time-domain simulation software PSCAD/EMTDC as the test system. The

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Liang, Weichen, Yiwei Zhao, Xuan Li, et al. "A Quantitative Evaluation Method Based on Single-Ended Information Protection Adaptability Considering Distributed Generator Access." Energies 17, no. 16 (2024): 3907. http://dx.doi.org/10.3390/en17163907.

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A high proportion of distributed generators (DGs) connected to the distribution network causes a significant change in the normal and fault currents of the system as well as in the linearization of the characteristics. It is difficult to adapt to conventional protection. This paper theoretically analyzes the possible impact of fault current characteristics on traditional protection based on single-ended informativeness after connecting to DGs. From the perspective of protection action, the evaluation index system of DG protection is established by considering the maximum short-circuit current

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Yuan, Liang, Ke Meng, Jingjie Huang, Zhao Yang Dong, Wang Zhang, and Xiaorong Xie. "Development of HVRT and LVRT Control Strategy for PMSG-Based Wind Turbine Generators." Energies 13, no. 20 (2020): 5442. http://dx.doi.org/10.3390/en13205442.

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Various challenges are acknowledged in practical cases with high wind power penetration. Fault ride-through (FRT) capability has become the most dominant grid integration requirements for the wind energy conversion system worldwide. The high voltage ride-through (HVRT) and low voltage ride-through (LVRT) performance play a vital role in the grid-friendly integration into the system. In this paper, a coordinated HVRT and LVRT control strategy is proposed to enhance the FRT capability of the permanent magnet synchronous generator (PMSG)-based wind turbine generators (WTG). A dual-mode chopper pr

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Natgunanathan, Iynkaran, Purathani Praitheeshan, Longxiang Gao, Yong Xiang, and Lei Pan. "Blockchain-Based Audio Watermarking Technique for Multimedia Copyright Protection in Distribution Networks." ACM Transactions on Multimedia Computing, Communications, and Applications 18, no. 3 (2022): 1–23. http://dx.doi.org/10.1145/3492803.

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Copyright protection in multimedia protection distribution is a challenging problem. To protect multimedia data, many watermarking methods have been proposed in the literature. However, most of them cannot be used effectively in a multimedia distribution network (MDN) as they are not designed to support multi-layer watermark embedding. Multi-layer watermarking mechanisms were developed to protect multimedia data across different layers in an MDN. However, in those mechanisms, we need to trust the entities in the MDN, such as regional and country distributors. To overcome this potential drawbac

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Ljubisavljević, Snežana, Luka Ljubisavljević, and Dejan Jovanović. "Environmental Audit for Environmental Improvement and Protection." Economic Themes 55, no. 4 (2017): 521–38. http://dx.doi.org/10.1515/ethemes-2017-0029.

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AbstractThe main purpose of this paper is to explain the ways in which environmental audit contributes to improving and preserving environmental protection, respecting the concept of sustainable development. The paper uses methods of analysis, synthesis, analogy, and continuity. Specifically, to draw conclusion about the impact of environmental audit on environmental improvement and protection, first of all, relevant and available foreign literature and practice are consulted. Research results show direct link between environmental audit requirements and protection and improvement of polluting

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Trachtenberg, Or, and Alon Kuperman. "Output Voltage and Resistance Assessment of Load-Independent-Voltage-Output Frequency Operating Inductive Wireless Power Transfer Link Utilizing Input DC-Side Measurements Only." Electronics 10, no. 17 (2021): 2109. http://dx.doi.org/10.3390/electronics10172109.

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The paper puts forward a method for predicting output voltage and resistance of a series-series (SS) compensated inductive wireless power transfer (IWPT) link operating at load-independent-voltage-output (LIVO) frequency. The link is a part of the static system (reported by the authors in earlier works), wirelessly delivering power into an enclosed compartment without any secondary-to-primary feedback. The proposed algorithm employs input DC-side quantities (which are slow-varying and nearly noise-free, thus measured utilizing low-cost, low-bandwidth sensors) only to monitor output DC-side qua

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Creusot, Christophe, Antonio Morandi, Francesco Mimmi, et al. "Superconducting Cable Modelling Into Electro- Magnetic Transient Simulation Tool." IEEE Transactions on Applied Superconductivity 34, no. 3 (2024): 5400606. https://doi.org/10.1109/TASC.2024.3370118.

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The European project SCARLET aims to study and realize a demonstrator of a MVDC (Medium Voltage Direct Current) high-power superconducting cable. This device might be employed to connect offshore wind farms with land, expecting to significantly simplify the offshore platform by eliminating the need for its conversion function. For this purpose, windmill conversion chain must be modified to directly produce the MVDC export voltage. In this scenario, this paper presents the case of a 1GW offshore windmill superconducting link and outlines the design consideration for a 1 GW onshore converter. Fo

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Vikovych, Ihor, Ljubomyr Krainyk, Roman Zinko, Vitalij Popovych, and Orest Horbai. "Design of impact dampers for transporting cargoes by two-link vehicles." Eastern-European Journal of Enterprise Technologies 2, no. 7 (110) (2021): 85–94. http://dx.doi.org/10.15587/1729-4061.2021.229447.

Full text

Abstract:

This paper considers the influence of the transitional modes of movement (acceleration, braking) of a multi-link vehicle on the vibration protection of transported non-fixed or partially fixed cargoes. The impact phenomenon, in this case, can be strengthened by the existence of coupling mechanisms between the links of a multi-link vehicle. To reduce such horizontal impact loads, it is advisable to use elements with viscoelastic damping in the coupling devices of a multi-link vehicle. To study the actual impact phenomena during the transportation of non-fixed or partially fixed cargoes under th

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S Monish, Dr.K.Radhika, S Naveenkumar, and R Ponkumar. "Design and Implementation of ATM Security Using IOT." international journal of engineering technology and management sciences 9, no. 2 (2025): 234–43. https://doi.org/10.46647/ijetms.2025.v09i02.031.

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This paper proposes a secured ATM (Automated Teller Machine) system thatenhances traditional security protocols by incorporating a card scanning system along with a linkbased authentication feature. Current ATM systems typically rely on a two-factor authenticationmodel, where the user must have the ATM card and know the PIN. However, this method remainsvulnerable to fraud if an attacker gains access to both the card and PIN. The proposed systemaddresses this issue by adding an extra layer of security: a link-based authentication process. In thissystem, after the user scans their ATM card and e

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