Relevant bibliographies by topics / Power System Islanding

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Power System Islanding'

Author: Grafiati
Published: 4 June 2021
Last updated: 19 June 2025

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Journal articles on the topic "Power System Islanding"

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Hake, A. G., S. B. Chavan, and R. K. Kamat. "Design and Implementation of an Embedded System for Islanding Detection and Control Action in PV Inverter system." Journal of Physics: Conference Series 2325, no. 1 (2022): 012027. http://dx.doi.org/10.1088/1742-6596/2325/1/012027.

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Abstract Many countries utilize hybrid energy systems for power generation. Transmission lines are used to deliver electricity to remote places from a variety of sources. During islanding, power lines are broken or damaged by natural or man-made causes. If not detected, animal life may be endangered. This paper presents anti-islanding technique that can be used to detect and prevent islanding. In this work, a prototype is developed using microcontroller for an anti-islanding PV inverter control system. The system detects islanding and disconnects the load from the source inverter and switches off the inverter. This technique continuously monitors the output power. A sudden drop in output power is indicative of islanding. The system immediately isolates the PV inverter from the output load and switches off all processing devices. A relay is used to isolate the PV inverter from the load. In the system developed here source isolation time is equal to relay switching time.
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Sirige, Sindhura S., Sallena Choudhury, and Jayalakshmi N. S. "Islanding detection of distributed generation systems using hybrid technique for multi-machine system." International Journal of Power Electronics and Drive Systems (IJPEDS) 11, no. 4 (2020): 2046. http://dx.doi.org/10.11591/ijpeds.v11.i4.pp2046-2054.

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Due to depletion of conventional fuels and increase in power demand, many renewable energy sources are being integrated into the electrical grid. One of the major concerns with this integration of these renewable sources with utility grid is unintentional islanding. Many techniques have been proposed to detect unintentional islanding, all of them trying to comply with the IEEE standard 1547. This paper presents an analysis of the hybrid technique to detect the islanding condition of the power system with multi-machine systems. This work aims at analysing the technique against increasing size of the system with increasing number of distributed generators by including practical voltage unbalance formula. The validity of this detection technique is verified using IEEE standard test power systems in MATLAB platform. This method can be used to identify multiple islanding conditions effectively. The simulation results show the effectiveness of the technique to detect islanding condition for multi-machine systems.
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Sindhura, S. Sirige, Choudhur Sallena, and N. S. Jayalakshmi. "Islanding detection of distributed generation systems using hybrid technique for multi-machine system." International Journal of Power Electronics and Drive System (IJPEDS) 11, no. 4 (2020): 2046–54. https://doi.org/10.11591/ijpeds.v11.i4.pp2046-2054.

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Due to depletion of conventional fuels and increase in power demand, many renewable energy sources are being integrated into the electrical grid. One of the major concerns with this integration of these renewable sources with utility grid is unintentional islanding. Many techniques have been proposed to detect unintentional islanding, all of them trying to comply with the IEEE standard 1547. This paper presents an analysis of the hybrid technique to detect the islanding condition of the power system with multi-machine systems. This work aims at analysing the technique against increasing size of the system with increasing number of distributed generators by including practical voltage unbalance formula. The validity of this detection technique is verified using IEEE standard test power systems in MATLAB platform. This method can be used to identify multiple islanding conditions effectively. The simulation results show the effectiveness of the technique to detect islanding condition for multi-machine systems.
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Su, Guang, Jinyuan Shi, Shengli He, Tao Han, Biaolong Su, and Hongwei Du. "Design of Function of Anti-islanding in Novel Power Distribution System with Distributed New Energy Access." Journal of Physics: Conference Series 2477, no. 1 (2023): 012054. http://dx.doi.org/10.1088/1742-6596/2477/1/012054.

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Abstract With the proposal of “Double-Carbon” goal and the acceleration of energy transformation, a large number of distributed new energy sources such as photovoltaics and wind power, are connected to the power distribution system, the power distribution system has developed into a novel distribution system with the optimization and coordination of energy as its core, thus put forward higher requirements for the safety protection of distribution network. However, when the line of distribution network is repaired or faulty, the power distribution system is very easy to cause islanding effect. Measures of anti-islanding are still implemented based on the grid-connected inverter on the user’s side, and there may be dead zones for anti-islanding protection or other abnormal situations. From the perspective of a novel power distribution system, this paper proposes the method of anti-islanding in novel distribution system with distributed new energy access. The identification of islanding criterion signal, the determination of islanding operation’s area, the generation and execution of islanding processing strategy, the evaluation of islanding processing result and the display of anti-islanding function are elaborated in detail. By analyzing the scenarios of actual application of the anti-islanding processing method, the proposed method can accurately sense the state of islanding of the distribution network and quickly isolate the operating area of islanding through remote control, and the novel power distribution system with distributed new energy access can be prevented from running in islanding, which greatly improves the efficiency of anti-islanding processing for dispatchers, so as to ensure the safe, stable and reliable operation of the distribution network.
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Tan, Kuang-Hsiung, and Chien-Wu Lan. "DG System Using PFNN Controllers for Improving Islanding Detection and Power Control." Energies 12, no. 3 (2019): 506. http://dx.doi.org/10.3390/en12030506.

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In this study, an intelligent controlled distributed generator (DG) system is proposed for tracking control and islanding detection. First, a DC/AC inverter with DC power supply is adopted to emulate a DG system and control the active and reactive power outputs. Moreover, in order to comply with the standard for interconnection with the power grid, a novel active islanding detection method is proposed for the inverter-based DG system. In the proposed active islanding detection method, a perturbation signal is designed to inject into the d-axis current of the DG system which causes the frequency at the terminal of the RLC load to deviate when the power grid breaks down. The feasibility of the proposed active islanding detection method is verified according to the UL 1741 test configuration. Furthermore, in order to improve the tracking control of the active and reactive powers of the inverter-based DG system, and to effectively reduce the detection time of islanding phenomenon, two probabilistic fuzzy neural network (PFNN) controllers are adopted to take the place of the conventional proportional-integral (PI) controllers. In addition, the network structure and the online learning algorithm of the adopted PFNN are presented in details. Finally, some experimental results of the proposed active islanding detection method using PFNN controllers are proposed to validate the effectiveness and feasibility of the tracking control and islanding detection.
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Zhao, Guo, and Xue Liang Huang. "Composite Islanding Detection Method of Grid-Connected Photovoltaic Generation System." Applied Mechanics and Materials 339 (July 2013): 574–78. http://dx.doi.org/10.4028/www.scientific.net/amm.339.574.

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Islanding detection is an important issue for grid-connected photovoltaic (PV) generation systems. The paper puts forward a new composite islanding detection method combining active current disturbance and reactive current disturbance. This islanding detection method for three-phase inverter is simulated in the Matlab/Simulink environment. Simulation results show that, when the inverter output and the load power are balanced, the new islanding detection method can detect islanding quickly with little influence on the power quality.
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Zhou, Xue Song, Jia Rui Wu, and You Jie Ma. "A Review of Islanding Detection Method of Grid-Connected PV Power System." Advanced Materials Research 614-615 (December 2012): 815–18. http://dx.doi.org/10.4028/www.scientific.net/amr.614-615.815.

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With the increasing of the capacity of grid-connected photovoltaic (PV) power system, islanding detection becomes more prominent and significant. At present, islanding detection methods used in grid-connected photovoltaic system can be divided into passive detection methods and active detection methods these two categories, which can also be divided into a variety of methods. This paper shows a comprehensive review of islanding detection methods, classifies the methods of islanding detection, analyzes the principles and characteristics of various islanding detection methods, indicates their appropriate situations, and pointes out the prospect of islanding detection methods. In practical applications, according to the actual situation, selects one or more islanding detection methods can attain better detection effect.
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Prudvi Raj, P. "Islanding Detection of IEEE 13 Bus System Based on Sequence Components." International Transactions on Electrical Engineering and Computer Science 2, no. 2 (2023): 44–51. http://dx.doi.org/10.62760/iteecs.2.2.2023.48.

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Islanding recognition in microgrids is crucial for enhancing power system safety and efficiency. This article presents a novel passive islanding recognition technique for grid integrated renewable Distributed Generation (DG) network. This approach is based on current and voltage disturbances at the moment of islanding. The islanding recognition method is based on the sequence analyzers connected with the point of common coupling (PCC). The suggested method is suitable for estimating the islanding situation in a 0% active power mismatch. The system created in this islanding work is a perfect 13 bus system. It has been tested for a variety of non-islanding circumstances. A microgrid network is simulated using the MATLAB R2016a software.
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Safdar, Raza, Amjad Hanya, Umer Muhammad, and Khalid Aqeel. "Analysis of power system parameters for islanding detection using wavelet transform." Indonesian Journal of Electrical Engineering and Computer Science (IJEECS) 17, no. 3 (2020): 1184–93. https://doi.org/10.11591/ijeecs.v17.i3.pp1184-1193.

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This paper classifies the basic power system parameters based on sensitivity and performance capability. This is the basic step in selecting the suitable parameter for intelligent islanding detection technique. The behaviour of basic power system parameters is analyzed using wavelet transform under all possible islanding and non-islanding conditions. In wavelet transform, the mother wavelet plays a significant role in the extraction of parameter features. The db4 mother wavelet is selected after an extensive analysis on different mother wavelets. As a result, it has been found that the extracted feature of reactive power shows the highest capability to distinguish islanding from non-islanding events.
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Younas, Zubair, and Safdar Raza. "Performance analysis of power system Indices for Islanding Detection." Indian Journal of Science and Technology 12, no. 40 (2019): 1–10. http://dx.doi.org/10.17485/ijst/2019/v12i40/147538.

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Dissertations / Theses on the topic "Power System Islanding"

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Raak, Fredrik. "Investigation of Power Grid Islanding Based on Nonlinear Koopman Modes." Thesis, KTH, Elektriska energisystem, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-136834.

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To view the electricity supply in our society as just sockets mountedin our walls with a constant voltage output is far from the truth. Inreality, the power system supplying the electricity or the grid, is themost complex man-made dynamical system there is. It demands severecontrol and safety measures to ensure a reliable supply of electric power.Throughout the world, incidents of widespread power grid failures havebeen continuously reported. The state where electricity delivery to customersis terminated by a disturbance is called a blackout. From a stateof seemingly stable operating conditions, the grid can fast derail intoan uncontrollable state due to cascading failures. Transmission linesbecome automatically disconnected due to power flow redirections andparts of the grid become isolated and islands are formed. An islandedsub-grid incapable of maintaining safe operation conditions experiencesa blackout. A widespread blackout is a rare, but an extremely costlyand hazardous event for society.During recent years, many methods to prevent these kinds of eventshave been suggested. Controlled islanding has been a commonly suggestedstrategy to save the entire grid or parts of the grid from a blackout.Controlled islanding is a strategy of emergency control of a powergrid, in which the grid is intentionally split into a set of islanded subgridsfor avoiding an entire collapse. The key point in the strategy is todetermine appropriate separation boundaries, i.e. the set of transmissionlines separating the grid into two or more isolated parts.The power grid exhibits highly nonlinear response in the case oflarge failures. Therefore, this thesis proposes a new controlled islandingmethod for power grids based on the nonlinear Koopman Mode Analysis(KMA). The KMA is a new analyzing technique of nonlinear dynamicsbased on the so-called Koopman operator. Based on sampled data followinga disturbance, KMA is used to identify suitable partitions of thegrid.The KMA-based islanding method is numerically investigated withtwo well-known test systems proposed by the Institute of Electrical andElectronics Engineers (IEEE). By simulations of controlled islanding inthe test system, it is demonstrated that the grid’s response following afault can be improved with the proposed method.The proposed method is compared to a method of partitioning powergrids based on spectral graph theory which captures the structural propertiesof a network. It is shown that the intrinsic structural propertiesof a grid characterized by spectral graph theory are also captured by theKMA. This is shown both by numerical simulations and a theoreticalanalysis.
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Zheng, Wei. "Control strategies enabling seamless switching to islanded operation." Thesis, University of Manchester, 2018. https://www.research.manchester.ac.uk/portal/en/theses/control-strategies-enabling-seamless-switching-to-islanded-operation(bbd0b08b-0a72-4c45-99de-c3b98f908058).html.

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Significant penetration of distributed generation (DG) and the increasing automation level available for distribution networks have opened an option of splitting a network into subsystems and operating each as an "autonomous island". This is particularly important when a major contingency occurs. However, there are issues and challenges that must be addressed before islanded operation becomes viable, among which, ensuring seamless switching of a distribution subsystem from grid-connected to islanded mode is critically important. Unless the subsystem is a predesigned microgrid, it is highly possible that the subsystem load demand will exceed the generation capacity of island DGs. Therefore, an appropriate load shedding scheme must be implemented to ensure the islanded subsystem is power balanced. In this thesis, a switching control strategy is designed to deliver seamless islanding switching. This strategy comprises a multiple-DG coordination method and a single-step load shedding scheme. Mathematical studies and time-domain simulations that investigate the transients observed during the islanding switching process are both conducted, and together, they are used to address the transient stability issues of an islanded subsystem. This thesis focuses on a distribution subsystem consisting of a mix of synchronous and inverter-based DGs and a combination of static and dynamic loads. DG modelling and control is first introduced, and based on that, various types of method to achieve multiple-DG coordination, including an innovative multiple-master strategy, are investigated. The widely accepted master-slave strategy is used to coordinate DGs when the subsystem is islanded. The strategy demands a single dispatchable and controllable DG, such as a synchronous generator, to be the master, whilst requires the others, such as intermittent renewable-based DGs, to be the slaves. Dynamic load modelling is another critical part of this thesis. The transient stability of dynamic loads after major disturbances is investigated and then used to design the stability-oriented load shedding priority. The single-step load shedding scheme calculates the load shedding amount based on the power flow at the point of common coupling (PCC) and the spinning reserve available in the island. This scheme is activated by the tripping event of the PCC circuit breaker between the grid and the island, and then priorities the load to be shed according to the priority predetermined from the stability perspective. Mathematical analysis is first conducted on a simple subsystem to investigate the impact of DG settings on the islanding transients. A full-scale subsystem is also simulated in PSCAD/EMTDC and used to verify the effectiveness of the switching control strategy. In time-domain simulations, the subsystem is islanded following either a routine switching event or a permanent grid fault. Various factors that may affect the transient performance are analysed, such as the severity of the fault, the DG penetration level, the fault clearance time and the switching control delay. This thesis concludes that based on the proposed switching control strategy, the concept of seamless switching from grid-connected to islanded operation is technically viable.
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Huang, Ruth Christiana. "Designing Anti-Islanding Detection Using the Synchrophasor Vector Processor." DigitalCommons@CalPoly, 2013. https://digitalcommons.calpoly.edu/theses/1001.

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ABSTRACT Designing Anti-Islanding Detection Using the Synchrophasor Vector Processor Ruth Huang The need for distributed generation (DG) has become more and more popular because of the adverse effects of fossil fuels and the fear of running out of fossil fuels. By having DG, there are less transmission losses, voltage support, controllability of the system, decreased costs in transmission and distribution, power quality improvement, energy efficiency, and reduced reserve margin. The adverse effects of DG are voltage flicker, harmonics, and islanding. Islanding occurs when the DG continues to energize the power system when the main utility is disconnected. Detecting islanding is important for personnel safety, speedy restoration, and equipment protection. This paper describes the different islanding methods currently used and the benefits of combining two passive islanding detection methods, under/over voltage detection and voltage phase jump detection methods, using the synchrophasor vector processor (SVP).
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Thacker, Timothy Neil. "Control of Power Conversion Systems for the Intentional Islanding of Distributed Generation Units." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/30814.

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Within the past decade, talk has arisen of shifting the utility grid from centralized, radial sources to a distributed network of sources, also known as distributed generation (DG); in the wake of deregulation, the California energy crisis, and northeastern blackouts. Existing control techniques for DG systems are designed to operate a system either in the connected or disconnected (islanding) mode to the utility; thus not allowing for both modes to be implemented and transitioned between. Existing detection and re-closure algorithms can also be improved upon. Dependent upon the method implemented, detection algorithms can either cause distortions in the output or completely miss a disturbance. The present re-closure process to reconnect to the utility is to completely shutdown and wait five minutes. The proposed methods of this study improve upon existing methods, via simulation and hardware experimentation, for DG systems that can intentionally islanding themselves. The proposed, â switched-modeâ , control allows for continuous operation of the system during disturbances by transitioning the mode of control to reflect the change in the system mode (grid-connected or islanding). This allows for zero downtimes without detrimental transients. The proposed detection method can sense disturbances that other methods cannot; and within 25 ms (approximately 1.5 line-cycles at 60 Hz). This method is an improvement over other methods because it eliminates the need to purposely distort the outputs to sense a disturbance. The proposed re-closure method is an improvement over the existing method due to the fact that it does not require the system to de-energize before re-synchronizing and reconnecting to the utility. This allows for DGs to continuously supply power to the system without having to shut down. Results show that the system is generally ready to reconnect after 2 to 5 line cycles.<br>Master of Science
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Singh, Manish K. "Optimal Operation of Water and Power Distribution Networks." Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/86860.

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Under the envisioned smart city paradigm, there is an increasing demand for the coordinated operation of our infrastructure networks. In this context, this thesis puts forth a comprehensive toolbox for the optimization of electric power and water distribution networks. On the analytical front, the toolbox consists of novel mixed-integer (non)-linear program (MINLP) formulations; convex relaxations with optimality guarantees; and the powerful technique of McCormick linearization. On the application side, the developed tools support the operation of each of the infrastructure networks independently, but also towards their joint operation. Starting with water distribution networks, the main difficulty in solving any (optimal-) water flow problem stems from a piecewise quadratic pressure drop law. To efficiently handle these constraints, we have first formulated a novel MINLP, and then proposed a relaxation of the pressure drop constraints to yield a mixed-integer second-order cone program. Further, a novel penalty term is appended to the cost that guarantees optimality and exactness under pre-defined network conditions. This contribution can be used to solve the WF problem; the OWF task of minimizing the pumping cost satisfying operational constraints; and the task of scheduling the operation of tanks to maximize the water service time in an area experiencing electric power outage. Regarding electric power systems, a novel MILP formulation for distribution restoration using binary indicator vectors on graph properties alongside exact McCormick linearization is proposed. This can be used to minimize the restoration time of an electric system under critical operational constraints, and to enable a coordinated response with the water utilities during outages.<br>Master of Science<br>The advent of smart cities has promoted research towards interdependent operation of utilities such as water and power systems. While power system analysis is significantly developed due to decades of focused research, water networks have been relying on relatively less sophisticated tools. In this context, this thesis develops Advanced efficient computational tools for the analysis and optimization for water distribution networks. Given the consumer demands, an optimal water flow (OWF) problem for minimizing the pump operation cost is formulated. Developing a rigorous analytical framework, the proposed formulation provides significant computational improvements without compromising on the accuracy. Explicit network conditions are provided that guarantee the optimality and feasibility of the obtained OWF solution. The developed formulation is next used to solve two practical problems: the water flow problem, that solves the complex physical equations yielding nodal pressures and pipeline flows given the demands/injections; and an OWF problem that finds the best operational strategy for water utilities during power outages. The latter helps the water utility to maximize their service time during power outages, and helps power utilities better plan their restoration strategy. While the increased instrumentation and automation has enabled power utilities to better manage restoration during outages, finding an optimal strategy remains a difficult problem. The operational and coordination requirements for the upcoming distributed resources and microgrids further complicate the problem. This thesis develops a computationally fast and reasonably accurate power distribution restoration scheme enabling optimal coordination of different generators with optimal islanding. Numerical tests are conducted on benchmark water and power networks to corroborate the claims of the developed formulations.
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NGUYEN, Ngoc Trung. "Study and development of innovative measurement methods and systems for anti-islanding protection in smart grids." Doctoral thesis, Università degli Studi di Palermo, 2014. http://hdl.handle.net/10447/90786.

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Gardner, Robert Matthew. "A Wide-Area Perspective on Power System Operation and Dynamics." Diss., Virginia Tech, 2008. http://hdl.handle.net/10919/26779.

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Classically, wide-area synchronized power system monitoring has been an expensive task requiring significant investment in utility communications infrastructures for the service of relatively few costly sensors. The purpose of this research is to demonstrate the viability of power system monitoring from very low voltage levels (120 V). Challenging the accepted norms in power system monitoring, the document will present the use of inexpensive GPS time synchronized sensors in mass numbers at the distribution level. In the past, such low level monitoring has been overlooked due to a perceived imbalance between the required investment and the usefulness of the resulting deluge of information. However, distribution level monitoring offers several advantages over bulk transmission system monitoring. First, practically everyone with access to electricity also has a measurement port into the electric power system. Second, internet access and GPS availability have become pedestrian commodities providing a communications and synchronization infrastructure for the transmission of low-voltage measurements. Third, these ubiquitous measurement points exist in an interconnected fashion irrespective of utility boundaries. This work offers insight into which parameters are meaningful to monitor at the distribution level and provides applications that add unprecedented value to the data extracted from this level. System models comprising the entire Eastern Interconnection are exploited in conjunction with a bounty of distribution level measurement data for the development of wide-area disturbance detection, classification, analysis, and location routines. The main contributions of this work are fivefold: the introduction of a novel power system disturbance detection algorithm; the development of a power system oscillation damping analysis methodology; the development of several parametric and non-parametric power system disturbance location methods, new methods of power system phenomena visualization, and the proposal and mapping of an online power system event reporting scheme.<br>Ph. D.
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Mazloomzadeh, Ali. "Development of Hardware in the Loop Real-Time Control Techniques for Hybrid Power Systems Involving Distributed Demands and Sustainable Energy Sources." FIU Digital Commons, 2014. http://digitalcommons.fiu.edu/etd/1666.

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The future power grid will effectively utilize renewable energy resources and distributed generation to respond to energy demand while incorporating information technology and communication infrastructure for their optimum operation. This dissertation contributes to the development of real-time techniques, for wide-area monitoring and secure real-time control and operation of hybrid power systems. To handle the increased level of real-time data exchange, this dissertation develops a supervisory control and data acquisition (SCADA) system that is equipped with a state estimation scheme from the real-time data. This system is verified on a specially developed laboratory-based test bed facility, as a hardware and software platform, to emulate the actual scenarios of a real hybrid power system with the highest level of similarities and capabilities to practical utility systems. It includes phasor measurements at hundreds of measurement points on the system. These measurements were obtained from especially developed laboratory based Phasor Measurement Unit (PMU) that is utilized in addition to existing commercially based PMU’s. The developed PMU was used in conjunction with the interconnected system along with the commercial PMU’s. The tested studies included a new technique for detecting the partially islanded micro grids in addition to several real-time techniques for synchronization and parameter identifications of hybrid systems. Moreover, due to numerous integration of renewable energy resources through DC microgrids, this dissertation performs several practical cases for improvement of interoperability of such systems. Moreover, increased number of small and dispersed generating stations and their need to connect fast and properly into the AC grids, urged this work to explore the challenges that arise in synchronization of generators to the grid and through introduction of a Dynamic Brake system to improve the process of connecting distributed generators to the power grid. Real time operation and control requires data communication security. A research effort in this dissertation was developed based on Trusted Sensing Base (TSB) process for data communication security. The innovative TSB approach improves the security aspect of the power grid as a cyber-physical system. It is based on available GPS synchronization technology and provides protection against confidentiality attacks in critical power system infrastructures.
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Vieira, Junior Jose Carlos de Melo. "Metodologias para ajuste e avaliação do desempenho de reles de proteção anti-ilhamento de geradores sincronos distribuidos." [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/260506.

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Orientadores: Andre Luiz Morelato França, Walmir de Freitas Filho<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação<br>Made available in DSpace on 2018-08-06T02:54:55Z (GMT). No. of bitstreams: 1 VieiraJunior_JoseCarlosdeMelo_D.pdf: 1983649 bytes, checksum: 2abfcaa471b650a7138b798950c476a7 (MD5) Previous issue date: 2006<br>Resumo: Uma das principais funções dos sistemas de proteção de geradores distribuídos conectados em redes de subtransmissão ou de distribuição de energia elétrica é desconectá-los tão logo uma situação de ilhamento seja detectada. O ilhamento ocorre quando parte da rede elétrica é desconectada do restante do sistema da concessionária, mas continua a ser energizada por um ou mais geradores distribuídos conectados a ela, formando um subsistema isolado da concessionária. Esta ocorrência deve ser evitada porque coloca em risco a segurança de pessoas e equipamentos e pode deteriorar a qualidade da energia suprida aos consumidores locais. Neste contexto, esta tese de doutorado propõe novas metodologias para avaliar de forma sistemática e ajustar alguns dos principais relés de proteção anti-ilhamento de geradores síncronos. As técnicas analisadas compreendem os relés de deslocamento de fase ou ¿salto de vetor¿, relés de taxa de variação de freqüência, relés de sub/sobrefreqüência convencionais e os relés de sub/sobretensão convencionais. A aplicação das metodologias desenvolvidas mostrou que elas são ferramentas eficientes para avaliar e determinar o desempenho desses relés quanto à detecção de ilhamentos, auxiliando na seleção dos esquemas de proteção e ajustes mais adequados<br>Abstract: One of the main functions of distributed generators¿ protection systems is the capability to disconnect the generators immediately after an islanding occurrence is detected. Islanding occurs when a portion of the distribution system is disconnected from the utility grid, yet remains energized by one or more distributed generators connected to it. This operating condition should be avoided because it poses safety risks to utility personnel and equipments as well as it can cause power quality problems to the local costumers. In this context, this thesis proposes new methodologies to systematically evaluate and adjust some anti-islanding techniques applied to synchronous generators. The techniques analyzed are the under/over frequency relays, the rate of change of frequency (ROCOF) relays, the vector surge or vector jump relays and the under/overvoltage relays. The results have shown that the proposed methodologies can be efficient tools to evaluate and to determine the performance of these anti-islanding relays, consequently, they can help protection engineers to select the most proper protection devices and their settings<br>Doutorado<br>Energia Eletrica<br>Doutor em Engenharia Elétrica
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Meira, Paulo César Magalhães 1985. "Análise da proteção antiilhamento de geradores de indução conectados em redes de distribuição de energia elétrica." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/259993.

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Orientador: Walmir de Freitas Filho<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação<br>Made available in DSpace on 2018-08-15T23:24:26Z (GMT). No. of bitstreams: 1 Meira_PauloCesarMagalhaes_M.pdf: 4399317 bytes, checksum: abd35262b6780f553e52831e63c6947c (MD5) Previous issue date: 2010<br>Resumo: Em redes de distribuição, ilhamento ocorre quando parte da rede elétrica é desconectada do restante do sistema da concessionária, mas continua a ser energizada por um ou mais geradores distribuídos conectados a ela. Esta ocorrência deve ser evitada porque coloca em risco a segurança de pessoas e equipamentos. Diversos trabalhos têm sido desenvolvidos na análise do comportamento ilhado e da proteção antiilhamento de geradores síncronos e de geradores não-rotativos conectados via conversores eletrônicos. No entanto, pouca atenção tem sido dada aos casos envolvendo geradores de indução, sejam eles geradores duplamente alimentados ou com rotor tipo gaiola de esquilo. Portanto, o objetivo desta dissertação de mestrado é investigar o comportamento destes geradores durante ilhamentos, bem como analisar a eficiência dos relés baseados em medidas de freqüência e tensão para a realização de proteção antiilhamento. A ferramenta empregada para análise da proteção antiilhamento é a zona de não-detecção, a qual é definida como a região no espaço de desbalanço de potência reativa versus desbalanço de potência ativa em que o sistema de proteção antiilhamento não consegue detectar a situação de ilhamento dentro do tempo especificado. Tais zonas foram obtidas através de numerosas simulações de transitórios eletromagnéticos utilizando o programa PSCAD/EMTDC<br>Abstract: In distribution systems, islanding occurs when part of the electric system is disconnected from the remaining utility system, but continues to be fed by one or more distributed generators operating in the island. This occurrence should be avoided as it represents a safety risk to equipment and customers. There have been several research papers which analyze the islanding behavior and the anti-islanding protection of synchronous generators and non-rotating generators connected to the grid using electronic converters. Nonetheless, little attention has been spent to analyze the situations involving induction generators, either doubly-fed generators or squirrel-cage generators. Therefore, the objective of this dissertation is to investigate the behavior of these generators during islanded operation, as well as analyze the efficiency of anti-islanding protection schemes based on frequency and voltage relays. The analysis is conducted by using the non-detection zone, which is defined in the active versus reactive power imbalance space where the anti-islanding protection fails. These zones were determined by numerous electromagnetic transient simulations by using the software PSCAD/EMTDC<br>Mestrado<br>Energia Eletrica<br>Mestre em Engenharia Elétrica
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Books on the topic "Power System Islanding"

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International Symposium on Low Power Electronics and Design (1999 San Diego, Calif.). Proceedings: 1999 International Symposium on Low Power Electronics and Design, Hyatt Islandia, San Diego Bay, San Diego, CA, August 16-17, 1999. ACM, 1999.

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International Symposium on Low Power Electronics and Design (1999 San Diego, Calif.). Proceedings: 1999 International Symposium on Low Power Electronics and Design, Hyatt Islandia, San Diego Bay, San Diego, CA, August 16-17, 1999. ACM, 1999.

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Moddi, Ms Shifali, Mr Harvinder singh, and Mr Sachin Kumar. GRID INTERFACED DISTRIBUTED GENERATION SYSTEM FOR POWER QUALITY IMPROVEMENT AND ISLANDING DETECTION. Independently published, 2019.

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On-line monitoring of electric power system for controlled islanding - 1. edición. Universidad Tecnológica de Pereira, 2015.

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1999 International Symposium on Low Power Electronics and Design: Proceedings : Hyatt Islandia San Diego Bay, San Diego, Ca August 16-17, 1999. Institute of Electrical & Electronics Enginee, 1999.

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Book chapters on the topic "Power System Islanding"

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Becker, Holger, and Christian Hachmann. "Power system restoration." In Intended and Unintended Islanding of Distribution Grids. The Institution of Engineering and Technology, 2024. http://dx.doi.org/10.1049/pbpo231e_ch5.

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Renner, Herwig, Petros Aristidou, and Ziqian Zhang. "Basics of power system dynamics and stability." In Intended and Unintended Islanding of Distribution Grids. The Institution of Engineering and Technology, 2024. http://dx.doi.org/10.1049/pbpo231e_ch2.

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Gómez, Edgar, Ernesto Vázquez, Nohemí Acosta, and Manuel A. Andrade. "Independent Estimation of Generator Clustering and Islanding Conditions in Power System with Microgrid and Inverter-Based Generation." In Power Systems. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-54275-7_20.

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Mohapatra, Sushree Shataroopa, Manoj Kumar Maharana, Abhilash Pradhan, P. K. Panigrahi, and R. C. Prusty. "Islanding Detection in Distributed Generation System Using MLPNN and ELPID Methods." In Smart Technologies for Power and Green Energy. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-2764-5_18.

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Pachanapan, Piyadanai. "Dynamic Modelling and Simulation of Power Electronic Converter in DIgSILENT Simulation Language (DSL): Islanding Operation of Microgrid System with Multi-energy Sources." In Power Systems. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-54124-8_3.

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Zhu, Chunlin, Chengbo Yu, Cheng He, et al. "An Islanding Detection Method for Grid-Connected Photovoltaic Power System Based on Modified LightGBM Algorithm." In The proceedings of the 10th Frontier Academic Forum of Electrical Engineering (FAFEE2022). Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-3404-1_7.

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Knobloch, Andreas, Mohamed Mostafa, João Abel Peças Lopes, et al. "Insular power systems." In Intended and Unintended Islanding of Distribution Grids. The Institution of Engineering and Technology, 2024. http://dx.doi.org/10.1049/pbpo231e_ch10.

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Finkel, Michael, Herwig Renner, and Ziqian Zhang. "Control of electric power systems." In Intended and Unintended Islanding of Distribution Grids. The Institution of Engineering and Technology, 2024. http://dx.doi.org/10.1049/pbpo231e_ch3.

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Harinadha Reddy, K., and S. Govinda Raju. "A New Approach of Grid Integrated Power System Stability and Analysis Through Fuzzy Inference PSO Algorithm for Handling of Islanding PDCS Mode Datasets." In Proceedings of the Second International Conference on Computational Intelligence and Informatics. Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-8228-3_46.

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Lee, Kyung-Jung, Kee-Min Kim, ChanWoo Moon, Hyun-Sik Ahn, and Gu-Min Jeong. "A New Type of Remote Power Monitoring System Based on a Wireless Sensor Network Used in an Anti-islanding Method Applied to a Smart-Grid." In Communications in Computer and Information Science. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-27204-2_43.

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Conference papers on the topic "Power System Islanding"

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Alnassar, Zainab, and S. T. Nagarajan. "Identification of Lines Connecting Coherent Areas in Power System for Safe Islanding." In 2024 IEEE Third International Conference on Power Electronics, Intelligent Control and Energy Systems (ICPEICES). IEEE, 2024. http://dx.doi.org/10.1109/icpeices62430.2024.10719206.

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Vadlamudi, Bindu, Indira Damarla, MLN Vital, and Subhojit Dawn. "Detection of Islanding Using Intelligent Classifiers for Integrated Solar Wind Power System." In 2024 IEEE 4th International Conference on Sustainable Energy and Future Electric Transportation (SEFET). IEEE, 2024. http://dx.doi.org/10.1109/sefet61574.2024.10718223.

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Kalyani, M., and Kalyan Kumar. "Power System Islanding Based on Slow Coherency." In 2018 20th National Power Systems Conference (NPSC). IEEE, 2018. http://dx.doi.org/10.1109/npsc.2018.8771828.

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Bazylevych, Roman, Mariusz Wrzesien, and Lubov Bazylevych. "Power System Islanding by the Hierarchical Clustering." In 2019 IEEE 14th International Scientific and Technical Conference on Computer Sciences and Information Technologies (CSIT). IEEE, 2019. http://dx.doi.org/10.1109/stc-csit.2019.8929837.

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Wang, Chenggen, Baohui Zhang, Zhiguo Hao, Zhiqian Bo, and Yu Sun. "Study on power system self-adaptive islanding." In 2011 IEEE International Conference on Advanced Power System Automation and Protection (APAP). IEEE, 2011. http://dx.doi.org/10.1109/apap.2011.6180526.

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Wu, Jiaxin, Xin Chen, Jie Zhang, and Pingfeng Wang. "Optimizing Intentional Islanding Design Strategies for Enhanced Failure Resilience of Power Systems." In ASME 2022 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/detc2022-89619.

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Abstract Establishing cleaner energy generation therefore improving the sustainability of power systems is a crucial task in this century. One of the key strategies being pursued is to shift the dependence on fossil fuel to renewable technologies such as wind, solar, and nuclear. However, with the increasing number of heterogeneous components included in the power system, the complexity of the hybrid energy system becomes more significant, which makes it prone to system failures. The complex system imposes a more stringent requirement of the contingency plan to enhance the overall system resilience against potential system disruptive events. Among different strategies to ensure a resilient system, intentional islanding is commonly applied in practical applications for power systems. In this study, we address the challenges of intentional islanding design considering high penetration of renewable energy sources, and develop a hierarchical clustering-based design method for optimized intentional islanding strategies at the transmission level of a power system. To incorporate the renewable generation that relies on the inverter technology, the frequency measurements are considered to represent the transient response and further used as embedded information in the clustering algorithm. And in the case study, the stabilized post-disruption performance of the modified IEEE-9 bus test system demonstrates the capability of the proposed method for resilience enhancement.
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Tang, Ye, Rui Sun, Kyle Thomas, and Rolando Burgos. "Synchrophasor based transmission system anti-islanding scheme." In 2017 IEEE Power & Energy Society General Meeting (PESGM). IEEE, 2017. http://dx.doi.org/10.1109/pesgm.2017.8274354.

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Sharma, Rashmi, and Pratibha Singh. "Islanding detection and control in grid based system using wavelet transform." In 2012 IEEE Fifth Power India Conference. IEEE, 2012. http://dx.doi.org/10.1109/poweri.2012.6479557.

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Bahramirad, S., and W. Reder. "Islanding applications of energy storage system." In 2012 IEEE Power & Energy Society General Meeting. New Energy Horizons - Opportunities and Challenges. IEEE, 2012. http://dx.doi.org/10.1109/pesgm.2012.6345706.

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Granda, Nelson, and Graciela Colome. "An Intelligent Controlled Islanding Scheme for power systems." In 2015 18th International Conference on Intelligent System Application to Power Systems (ISAP). IEEE, 2015. http://dx.doi.org/10.1109/isap.2015.7325517.

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