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Добірка наукової літератури з теми "Power distribution system disturbances"

Автор: Grafiati
Опубліковано: 10 січня 2023
Оновлено: 28 січня 2023

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Статті в журналах з теми "Power distribution system disturbances"

1

Wanhar Afandi. "Performance Analysis of Protection System on A 20 KV Distribution System Network at PT PLN Tutorial Shop Pematang Siantar City." Journal of Science Technology (JoSTec) 3, no. 1 (December 27, 2021): 97–101. http://dx.doi.org/10.55299/jst.v3i1.60.

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Анотація:
On era of globalization needs of electrical energy very high . In distribution of electrical energy expected could walk with good without existence interference. Distribution of electrical energy from generator until distribution to consumer expected could walk with good . In another side also often occur disturbance specifically on the distribution system power electricity . System distribution power electricity that uses cable air or cable soil often experience various interference . Frequent disturbances _ occur is disturbance symmetry or disturbance not the symmetry that can in the form of connection short one phase to land , between phase or break up wrong one or more . For knowing big current disturbance the required analysis system distribution transformer for knowing disturbances that will happen . Security setting design on network proper distribution is something effort protect equipment, system as well as needs consumer from possible disturbance occur in system distribution. Calculation current disturbance and big transformer nominal current will used as reference important in determination of transformer settings in deployment voltage to consumers
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2

Wanhar Afandi. "Performance Analysis of Protection System on A 20 KV Distribution System Network at PT PLN Tutorial Shop Pematang Siantar City." Journal of Science Technology (JoSTec) 3, no. 1 (December 27, 2021): 97–101. http://dx.doi.org/10.55299/jostec.v3i1.60.

Повний текст джерела
Анотація:
On era of globalization needs of electrical energy very high . In distribution of electrical energy expected could walk with good without existence interference. Distribution of electrical energy from generator until distribution to consumer expected could walk with good . In another side also often occur disturbance specifically on the distribution system power electricity . System distribution power electricity that uses cable air or cable soil often experience various interference . Frequent disturbances _ occur is disturbance symmetry or disturbance not the symmetry that can in the form of connection short one phase to land , between phase or break up wrong one or more . For knowing big current disturbance the required analysis system distribution transformer for knowing disturbances that will happen . Security setting design on network proper distribution is something effort protect equipment, system as well as needs consumer from possible disturbance occur in system distribution. Calculation current disturbance and big transformer nominal current will used as reference important in determination of transformer settings in deployment voltage to consumers
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3

Borrás-Talavera, María Dolores, Juan Carlos Bravo, and César Álvarez-Arroyo. "Instantaneous Disturbance Index for Power Distribution Networks." Sensors 21, no. 4 (February 14, 2021): 1348. http://dx.doi.org/10.3390/s21041348.

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Анотація:
The stability of power systems is very sensitive to voltage or current variations caused by the discontinuous supply of renewable power feeders. Moreover, the impact of these anomalies varies depending on the sensitivity/resilience of customer and transmission system equipment to those deviations. From any of these points of view, an instantaneous characterization of power quality (PQ) aspects becomes an important task. For this purpose, a wavelet-based power quality indices (PQIs) are introduced in this paper. An instantaneous disturbance index (ITD(t)) and a Global Disturbance Ratio index (GDR) are defined to integrally reflect the PQ level in Power Distribution Networks (PDN) under steady-state and/or transient conditions. With only these two indices it is possible to quantify the effects of non-stationary disturbances with high resolution and precision. These PQIs offer an advantage over other similar because of the suitable choice of mother wavelet function that permits to minimize leakage errors between wavelet levels. The wavelet-based algorithms which give rise to these PQIs can be implemented in smart sensors and used for monitoring purposes in PDN. The applicability of the proposed indices is validated by using a real-time experimental platform. In this emulated power system, signals are generated and real-time data are analyzed by a specifically designed software. The effectiveness of this method of detection and identification of disturbances has been proven by comparing the proposed PQIs with classical indices. The results confirm that the proposed method efficiently extracts the characteristics of each component from the multi-event test signals and thus clearly indicates the combined effect of these events through an accurate estimation of the PQIs.
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4

Mohammed, Jamal Abdul-Kareem, Arkan Ahmed Hussein, and Sahar R. Al-Sakini. "Voltage disturbance mitigation in Iraq's low voltage distribution system." Indonesian Journal of Electrical Engineering and Computer Science 17, no. 1 (January 1, 2020): 47. http://dx.doi.org/10.11591/ijeecs.v17.i1.pp47-60.

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<p>Power distribution network in Iraq still suffers from significant problems regarding electricity distribution level. The most important problem is the disturbances that are occurring on lines voltages, which in turn, will negatively affect sensitive loads they feed on. Protection of these loads could be achieved efficiently and economically using the dynamic voltage restorer DVR when installed between the voltage source and load to inject required compensation voltage to the network during the disturbances period. The DVR mitigates these disturbances via restoring the load voltage to a pre-fault value within a few milliseconds. To control the DVR work, dq0 transformation concept and PID method with sinusoidal pulse-width modulation SPWM based converter had been used to correct the disturbances and thus enhance the power quality of the distribution network. The DVR performance was tested by MATLAB/Simulink with all kinds of expected voltage disturbances and results investigated the effectiveness of the proposed method.</p>
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5

Olajuyin, E. A., and Olubakinde Eniola. "MICROGRID IN POWER DISTRIBUTION SYSTEM." International Journal of Research -GRANTHAALAYAH 7, no. 8 (July 23, 2020): 387–93. http://dx.doi.org/10.29121/granthaalayah.v7.i8.2019.687.

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Анотація:
Power is a very important instrument to the development of economy of a nation and it must be stable and available and to meet the demand of the consumers at all times. The quest for power supply has introduced a new technology called microgrid. Micro grids are regarded as small power systems that confine electric energy generating facilities, from both renewable energy sources and conventional synchronous. Generators, and customer loads with respect to produced electric energy. It can be connected to grid or operate in islanding mode. On the other hand, the grid’s dynamics and its stability rely on the amount of stored energy in the micro grid. In a conventional power system with a large number of synchronous generators as the main sources of energy, the mechanical energy in the generators’ rotors, in the form of kinetic energy, serves as the stored energy and feeds the grids in the event of any drastic load changes or if disturbances occur. Microgrid is an alternative idea to support the grid, it can be applied in a street, estates, community or a locality (towns and villages), organizations and establishments. Load forecasting can be further extended to Organizations, Local Government, State and country to determine the energy consumption.
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6

Djibo, Marounfa `., Paul Moses, and Ike Flory. "Fault Protection Considerations for MVDC Shipboard Power Systems Operating with Pulsed-Power Loads." WSEAS TRANSACTIONS ON POWER SYSTEMS 16 (August 2, 2021): 139–48. http://dx.doi.org/10.37394/232016.2021.16.14.

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Medium Voltage Direct Current (MVDC) power distribution architectures are of immense interest for various shipboard power applications due to their advantages over classical MVAC distribution systems with respect to power quality, power density, and efficiency. However, MVDC are far away from maturity when compared to MVAC with respect to fault detection and isolation. Currently, there are no standards available for applying MVDC protection systems in shipboard applications. Furthermore, due to the absence of zero crossings in DC waveforms and unique transient fault signatures, it is challenging to design effective protection system schemes to isolate faults via conventional protection systems. This paper investigates and analyses various types of shipboard MVDC dynamic fault behaviours and signatures under different DC bus disturbances such as: bus to ground, bus to bus to ground, and impact of Pulsed-Power Load (PPL) with and without faults on a shipboard MVDC distribution system. Furthermore, a communication-based fault detection and isolation system controller that improves upon a directional ac overcurrent relay protection system is proposed offering additional protection discrimination between faults and PPLs in MVDC systems. To validate the effectiveness of the proposed protection controller, different bus current disturbances are simulated within a time-domain electromagnetic transient simulation of a shipboard power system including a PPL system operating with different ramp rate profiles, pulse widths, peak powers, and fault locations
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7

Chan, Kok Wai, Rodney H. G. Tan, and V. H. Mok. "Simulation of Power Quality Disturbances Using PSCAD." Applied Mechanics and Materials 785 (August 2015): 373–77. http://dx.doi.org/10.4028/www.scientific.net/amm.785.373.

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Анотація:
Power quality is becoming a concern in modern electrical network due to complexity of the system. To improve power quality, there needs to be analysis and research on complex power quality events systematically. Disturbances in distribution system, including sag/swell, transient, harmonic, voltage notch, and flicker that affect power quality are simulated in this research work. The comprehensive set of models are developed in PSCAD with minimum blocks and settings without compromising the essence of power quality events. This research work aims to introduce the power quality events to electrical engineering students, as well as reinforce understanding of power quality disturbances in distribution system through interactive simulation approach.
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8

Hernández Chilán, Julio. "MEJORAS EN LAS PRESTACIONES DE AEROGENERADORES SINCRÓNICOS DE VELOCIDAD VARIABLE FRENTE A LOS HUECOS DE TENSIÓN." Revista de Investigaciones en Energía, Medio Ambiente y Tecnología: RIEMAT ISSN: 2588-0721 1, no. 1 (January 11, 2016): 44. http://dx.doi.org/10.33936/riemat.v1i1.208.

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Abstract: In the work presented are highlights that the introduction of wind turbines in a system of power, is sees limited by problems related with their behaviors facing them faults and disturbances that could occur in said system. When voltage in the system, wind turbines can be disconnected by amplifying the disturbance and its consequences. Sometimes not to use all the renewable wind energy which is available in a given natural site, due to the limitations explained above. Although is holding reserves of sources renewable of energy, its implementation practice could affect the behavior dynamic of the system of power facing disturbances. Currently, them wind turbines face them hollow of voltage dissipating the energy electric excess in form of heat, energy that is lost and not can be returned to the system of power. In this work is carried out an analysis on how to improve the performance of wind turbines for use in power distribution systems, if stored excess energy during the disturbances, which allows the use of electrical energy from small wind resources regardless of the position that windfarms in the power system are connected. In the work presented are highlights that the introduction of wind turbines in a system of power, is sees limited by problems related with their behaviors facing them faults and disturbances that could occur in said system. When voltage in the system, wind turbines can be disconnected by amplifying the disturbance and its consequences. In sometimes not is can take advantage of all it energy wind renewable that is has in a given site natural, due to the limitations explained previously. Index Terms: wind turbines, windfarms, power system, renewable wind energy
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9

Arizaldi, Afif, S. Salahuddin, M. Muhammad, Vishal Jain, Govinda Prashad Pandey, and Manoj Jagannathrao Watane. "Short Circuit Analysis on Distribution Network 20 kV Using Etap Software." Journal of Renewable Energy, Electrical, and Computer Engineering 1, no. 2 (September 30, 2021): 49. http://dx.doi.org/10.29103/jreece.v1i2.5232.

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Анотація:
In an electric power system, electricity is generated by the power plant and then channeled to a transmission line and then distributed to consumers, in the process of distributing electrical energy, the system does not always work in normal conditions, sometimes the system can experience disturbances such as one-phase, two-phase, and three-phase disturbances. This interference can disrupt the electrical system and can damage equipment if left unchecked, therefore it is necessary to install a protection device that can decide the interference so as not to damage other equipment when a disturbance occurs. Here the protection device used is a circuit breaker. In a fault condition, the circuit breaker must be able to separate the points of the fault so as not to damage other electrical equipment. In this case, to determine the capacity of the best protection device for the system, a short circuit fault simulation is performed. To simplify the calculation process here the author uses the help of ETAP software (Electrical Transient Analysis Program).
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10

Stojković, Jelena, and Predrag Stefanov. "A Novel Approach for the Implementation of Fast Frequency Control in Low-Inertia Power Systems Based on Local Measurements and Provision Costs." Electronics 11, no. 11 (June 2, 2022): 1776. http://dx.doi.org/10.3390/electronics11111776.

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Анотація:
Transitioning towards carbon-free energy has brought severe difficulties related to reduced inertia in electric power systems. Regarding frequency stability, low-inertia systems are more sensitive to disturbance, and traditional frequency control is becoming insufficient to maintain frequency within acceptable limits. Consequently, there is a necessity for faster frequency support that can be activated before the primary frequency control and that can decelerate further frequency decay. This paper proposes a local control strategy for a multi-stage fast frequency response (FFR) provided as an ancillary service that considers the location of the disturbance and the distribution of system inertia. The novelty of the presented control strategy is the ranking of FFR resources by price, which takes the economic component into consideration. The proposed control is simple, based only on RoCoF measurements that trigger the activation of FFR resources. Its advantage over other methods is the ability to adapt the FFR resource response to the disturbance without complex calculations and the ability to ensure a bigger response closer to the disturbance, as well as in low-inertia parts of the system. In that way, there is a bigger activation of resources in the parts of the system that are more endangered by disturbances, which, as a result, minimizes the propagation of the disturbance’s impact on system stability. The applicability of the presented method is demonstrated in a simple 3-area power system and IEEE 68-bus system implemented in MATLAB/Simulink. The results show that the proposed control enables the largest response closer to the disturbance, thus mitigating the propagation of the disturbance. Furthermore, the results confirm that the proposed control enables lower provision costs and more support in low-inertia areas that are more vulnerable to disturbances.
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Більше джерел

Дисертації з теми "Power distribution system disturbances"

1

Axelberg, Peter. "On Tracing Flicker Sources and Classification of Voltage Disturbances." Doctoral thesis, Högskolan i Borås, Institutionen Ingenjörshögskolan, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-3416.

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Developments in measurement technology, communication and data storage have resulted in measurement systems that produce large amount of data. Together with the long existing need for characterizing the performance of the power system this has resulted in demand for automatic and efficient information-extraction methods. The objective of the research work presented in this thesis was therefore to develop new robust methods that extract additional information from voltage and current measurements in power systems. This work has contributed to two specific areas of interest.The first part of the work has been the development of a measurement method that gives information how voltage flicker propagates (with respect to a monitoring point) and how to trace a flicker source. As part of this work the quantity of flicker power has been defined and integrated in a perceptionally relevant measurement method. The method has been validated by theoretical analysis, by simulations, and by two field tests (at low-voltage and at 130-kV level) with results that matched the theory. The conclusion of this part of the work is that flicker power can be used for efficient tracing of a flicker source and to determine how flicker propagates.The second part of the work has been the development of a voltage disturbance classification system based on the statistical learning theory-based Support Vector Machine method. The classification system shows always high classification accuracy when training data and test data originate from the same source. High classification accuracy is also obtained when training data originate from one power network and test data from another. The classification system shows, however, lower performance when training data is synthetic and test data originate from real power networks. It was concluded that it is possible to develop a classification system based on the Support Vector Machine method with “global settings” that can be used at any location without the need to retrain. The conclusion is that the proposed classification system works well and shows sufficiently high classification accuracy when trained on data that originate from real disturbances. However, more research activities are needed in order to generate synthetic data that have statistical characteristics close enough to real disturbances to replace actual recordings as training data.
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2

Looja, Tuladhar R. "Control of Custom Power System using Active Disturbance Rejection Control." Cleveland State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=csu1438913443.

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3

Phan, Anh Tuan. "Power Systems Model Developments for Power Qality Monitoring : Application to Fundamental Frequency and Unbalance Estimation." Thesis, Mulhouse, 2016. http://www.theses.fr/2016MULH8692/document.

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Анотація:
Les énergies renouvelables, l’énergie sous la forme électrique et son transport à l’aide de réseaux électriques intelligents représentent aujourd’hui des enjeux majeurs car ils ont de grands impacts environnementaux et sociétaux. Ainsi, la production, le transport et la gestion de l’énergie électrique, continuent toujours à susciter un intérêt croissant. Pour atteindre ces objectifs, plusieurs verrous technologiques doivent être levés. Au-delà des questions liées aux architectures des réseaux électriques, aux modèles, aux outils de dimensionnement, à la formalisation de caractéristiques et d’indicateurs, aux contraintes et aux critères, à la gestion et à la production décentralisée, la qualité de la puissance électrique est centrale pour la fiabilité de l’ensemble du système de distribution. Les perturbations affectent la qualité des signaux électriques et peuvent provoquer des conséquences graves sur les autres équipements connectés au réseau. Les travaux de cette thèse s’inscrivent dans ce contexte et de fait ils sont orientés vers le développement de modèles, d’indicateurs et de méthodes de traitement des signaux dédiés à la surveillance en temps-réel des performances des réseaux de distribution électrique.Cette thèse analyse la qualité de la puissance électrique, en prenant en compte plusieurs caractéristiques bien connues ainsi que leur pertinence. Les modèles des systèmes électriques et les méthodes de traitement du signal pour estimer leurs paramètres sont étudiés pour des applications en temps-réel de surveillance, de diagnostic et de contrôle sous diverses conditions. Parmi tous, la fréquence fondamentale est l’un des paramètres les plus importants pour caractériser un système de distribution électrique. En effet, sa valeur qui est censée être une constante, varie en permanence et reflète la dynamique de l’énergie électrique disponible. La fréquence peut également être affectée par certaines productions d’énergie renouvelable et peut être influencée par des mauvaises synchronisations de certains équipements. En outre, la puissance absorbée par les charges ou produite par des sources est généralement différente d’une phase à l’autre. Évidemment, la plupart des installations électriques existantes avec plusieurs phases, qu’elles soient résidentielles ou industrielles, travaillent dans des conditions déséquilibrées. Identifier les composantes symétriques de tension est dans ce cas un moyen pertinent pour quantifier le déséquilibre entre les phases d’un système électrique.De nouvelles représentations de type espace d’état et modélisant des systèmes électriques sont proposées pour estimer la fréquence fondamentale et pour identifier les composantes symétriques de tension des systèmes électriques triphasés et déséquilibrés. Le premier modèle d’espace d’état proposé considère la fréquence fondamentale comme connue ou obtenue par un autre estimateur. En contrepartie, il fournit les autres paramètres caractérisant le système électrique. Un second modèle d’état-espace est introduit. Il est original dans le sens où il ne nécessite aucune connaissance de la fréquence fondamentale. Une de ses variables d’état est directement reliée à la fréquence et permet donc de la déduire. En outre, ce nouvel espace d’état est parfaitement capable de représenter des systèmes électriques à trois phases équilibrés et non équilibrés. [...]
Renewable energy, electricity and smart grids are core subjects as they have great environmental and societal impacts. Thus, generating, transporting and managing electric energy, i.e., power, still continue to drive a growing interest. In order to properly achieve these goals, several locks must be removed. Beyond issues related to the distribution architecture, the formalization of models, sizing tools, features and indicators, constraints and criteria, decentralized generation and energy management, power quality is central for the whole grid’s reliability. Disturbances affect the power quality and can cause serious impact on other equipment connected to the grid. The work of this thesis is part of this context and focuses on the development of models, indicators, and signal processing methods for power quality monitoring in time-varying power distribution systems.This thesis analyzes the power quality including several well-known features and their relevance. Power system models and signal processing methods for estimating their parameters are investigated for the purpose of real-time monitoring, diagnostic and control tasks under various operating conditions. Among all, the fundamental frequency is one of the most important parameters of a power distribution system. Indeed, its value which is supposed to be a constant varies continuously and reflects the dynamic availability of electric power. The fundamental frequency can also be affected by renewable energy generation and by nasty synchronization of some devices. Moreover, the power absorbed by loads or produced by sources is generally different from one phase to the other one. Obviously, most of the existing residential and industrial electrical installations with several phases work under unbalanced conditions. Identifying the symmetrical components is therefore an efficient way to quantify the imbalance between the phases of a grid. New state-space representations of power systems are proposed for estimating the fundamental frequency and for identifying the voltage symmetrical components of unbalanced three-phase power systems. A first state-space representation is developed by supposing the fundamental frequency to be known or to be calculated by another estimator. In return, it provides other parameters and characteristics from the power system. Another original state-space model is introduced which does not require the fundamental frequency. Here, one state variable is a function of the frequency which can thus be deduced. Furthermore this new state-space model is perfectly are able to represent a three-phase power system in both balanced and unbalanced conditions. This not the case of lots of existing models. The advantage of the proposed state-space representation is that it gives directly access to physical parameters of the system, like the frequency and the amplitude and phase values of the voltage symmetrical components. Power systems parameters can thus be estimated in real-time by using the new state-space with an online estimation process like an Extended Kalman Filter (EKF). The digital implementation of the proposed methods presents small computational requirement, elegant recursive properties, and optimal estimations with Gaussian error statistics.The methods have been implemented and validated through various tests respecting real technical constraints and operating conditions. The methods can be integrated in active power filtering schemes or load-frequency control strategies to monitor power systems and to compensate for electrical disturbances
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4

Barrera, Núñez Víctor Augusto. "Automatic diagnosis of voltage disturbances in power distribution networks." Doctoral thesis, Universitat de Girona, 2012. http://hdl.handle.net/10803/80944.

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Анотація:
This thesis proposes a framework for identifying the root-cause of a voltage disturbance, as well as, its source location (upstream/downstream) from the monitoring place. The framework works with three-phase voltage and current waveforms collected in radial distribution networks without distributed generation. Real-world and synthetic waveforms are used to test it. The framework involves features that are conceived based on electrical principles, and assuming some hypothesis on the analyzed phenomena. Features considered are based on waveforms and timestamp information. Multivariate analysis of variance and rule induction algorithms are applied to assess the amount of meaningful information explained by each feature, according to the root-cause of the disturbance and its source location. The obtained classification rates show that the proposed framework could be used for automatic diagnosis of voltage disturbances collected in radial distribution networks. Furthermore, the diagnostic results can be subsequently used for supporting power network operation, maintenance and planning.
En esta tesis se propone una metodología para la identificación de la localización relativa (aguas arriba/abajo) y la causa de una perturbación eléctrica. La metodología utiliza las ondas trifásicas de tensión y de corriente registradas en redes de distribución radial sin presencia de generación distribuida. La metodología es validada utilizando perturbaciones eléctricas reales y simuladas. La metodología involucra atributos que han sido concebidos basándose en principios eléctricos e hipótesis de acuerdo a cada uno de los fenómenos eléctricos analizados. Se propusieron atributos tanto basados en la forma de onda como en la fecha de ocurrencia de la perturbación. La cantidad de información contenida y/o explicada por cada atributo es valorada mediante la aplicación del análisis multivariante de la varianza y algoritmos de extracción automática de reglas de decisión. Los resultados de clasificación muestran que la metodología propuesta puede ser utilizada para el diagnóstico automático de perturbaciones eléctricas registradas en redes de distribución radial. Los resultados de diagnóstico pueden ser utilizados para apoyar las tareas de operación, mantenimiento y planeamiento de las redes de distribución.
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5

Parsons, Antony Cozart. "Automatic location of transient power quality disturbances /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.

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6

Littler, Timothy Brian. "Wavelets for the analysis and compression of power system disturbances." Thesis, Queen's University Belfast, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263403.

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7

Tamronglak, Surachet. "Analysis of power system disturbances due to relay hidden failures." Diss., Virginia Tech, 1994. http://hdl.handle.net/10919/39136.

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Анотація:
This research analyzes the linkage between power system disturbances and failures in relaying systems. The annual disturbance reports prepared by the North American Electric Reliability Council were examined. It has been found that relaying system failures plays very important role in power system cascading outages. The type of relaying system failures that are the most troublesome are the ones that have a potential to remain hidden until being exposed by some abnormal power system states to trigger relay misoperations. Each commonly used relaying scheme in transmission system is examined for any hidden failures that can lead to relay misoperations and multiple power system contingencies. Each hidden failure mode has a region, called region of vulnerability. Inside this region, some abnormal power system states can expose the hidden failure. The reach of the region depends largely on the settings of the relay in question. A method of computing the relative importance of each region of vulnerability, called vulnerability index, was proposed. The calculation of the index can be based on some measurements of power system performances. In this research, the stability measurements of the system following some contingencies that may occur in the region are chosen. With this approach, vulnerable relays can be identified. A preventive method was proposed so that the number of relay misoperations due to hidden failures and, ultimately, the number of power system disturbances can be reduced.
Ph. D.
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8

Fletcher, Robert Henry. "Optimal distribution system horizon planning /." Thesis, Connect to this title online; UW restricted, 2007. http://hdl.handle.net/1773/6018.

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9

Yu, Xuebei. "Distribution system reliability enhancement." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/41091.

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Practically all everyday life tasks from economic transactions to entertainment depend on the availability of electricity. Some customers have come to expect a higher level of power quality and availability from their electric utility. Federal and state standards are now mandated for power service quality and utilities may be penalized if the number of interruptions exceeds the mandated standards. In order to meet the requirement for safety, reliability and quality of supply in distribution system, adaptive relaying and optimal network reconfiguration are proposed. By optimizing the system to be better prepared to handle a fault, the end result will be that in the event of a fault, the minimum number of customers will be affected. Thus reliability will increase. The main function of power system protection is to detect and remove the faulted parts as fast and as selectively as possible. The problem of coordinating protective relays in electric power systems consists of selecting suitable settings such that their fundamental protective function is met under the requirements of sensitivity, selectivity, reliability, and speed. In the proposed adaptive relaying approach, weather data will be incorporated as follows. By using real-time weather information, the potential area that might be affected by the severe weather will be determined. An algorithm is proposed for adaptive optimal relay setting (relays will optimally react to a potential fault). Different types of relays (and relay functions) and fuses will be considered in this optimization problem as well as their coordination with others. The proposed optimization method is based on mixed integer programming that will provide the optimal relay settings including pickup current, time dial setting, and different relay functions and so on. The main function of optimal network reconfiguration is to maximize the power supply using existing breakers and switches in the system. The ability to quickly and flexibly reconfigure the power system of an interconnected network of feeders is a key component of Smart Grid. New technologies are being injected into the distribution systems such as advanced metering, distribution automation, distribution generation and distributed storage. With these new technologies, the optimal network reconfiguration becomes more complicated. The proposed algorithms will be implemented and demonstrated on a realistic test system. The end result will be improved reliability. The improvements will be quantified with reliability indexes such as SAIDI.
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Rosado, Sebastian Pedro. "Analysis of Electric Disturbances from the Static Frequency Converter of a Pumped Storage Station." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/34448.

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The present work studies the disturbances created in the electric system of a pumped storage power plant, which is an hydraulic generation facility where the machines can work as turbines or pumps, by the operation of a static frequency converter (SFC). The SFC is used for starting the synchronous machines at the station when in the pump mode. During the starting process several equipment is connected to the SFC being possible to get affected by the disturbances generated. These disturbances mainly include the creation of transient overvoltages during the commutation of the semiconductor devices of the SFC and the introduction of harmonics in the network currents and voltages. This work analyzes the possible effects of the SFC operation over the station equipment based on computer simulations. For this purpose, the complete system was modeled and the starting process simulated in a computer transient simulator program. The work begins with a general review of the effects of electric disturbances over high voltage equipment and in particular of the disturbances generated by power electronics conversion equipment. Then the models for the different kind of equipment present in the system are discussed and formulated. The control system that governs the operation of the SFC during the starting process is analyzed later as well as the operation conditions. Once the model of the system is set up, the harmonic analysis of the electric network is done by frequency domain and time domain methods. Time domain methods are also employed for the analysis of the commutation transient produced by the SFC operation. Finally, the simulation results are used to evaluate the impact of the SFC operation on the station equipment, especially on the generator step up transformer.
Master of Science
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Книги з теми "Power distribution system disturbances"

1

Kanekawa, Nobuyasu. Dependability in electronic systems: Mitigation of hardware failures, soft errors, and electro-magnetic disturbances. New York: Springer, 2011.

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Gonen, Turan. Electric power distribution system engineering. New York: McGraw-Hill, 1986.

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3

Gönen, Turan. Electric power distribution system engineering. 2nd ed. Boca Raton: Taylor & Francis, 2007.

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4

Electric power distribution system engineering. New York: McGraw-Hill, 1986.

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5

Association, Electricity Training, and Institution of Electrical Engineers, eds. Power system protection. 2nd ed. London: Institution of Electrical Engineers, 1995.

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6

Distribution system modeling and analysis. Boca Raton: CRC Press, 2002.

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7

Distribution system modeling and analysis. 2nd ed. Boca Raton: CRC Press, 2007.

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8

D, Stevenson William, and Stevenson William D, eds. Power system analysis. New York: McGraw-Hill, 1994.

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Distribution system modeling and analysis. 3rd ed. Boca Raton: Taylor & Francis, 2012.

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10

IEEE Power Engineering Society. Power System Restoration Working Group. and IEEE Power System Engineering Committee. System Operations Subcommittee., eds. Power system restoration. Piscataway, NJ: The Institute of Electrical and Electronics Engineers, 1993.

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Частини книг з теми "Power distribution system disturbances"

1

Pavlatos, C., and V. Vita. "Linguistic Representation of Power System Signals." In Electricity Distribution, 285–95. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-49434-9_12.

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Ghosh, Arindam, and Gerard Ledwich. "Series Compensation of Power Distribution System." In Power Quality Enhancement Using Custom Power Devices, 333–77. Boston, MA: Springer US, 2002. http://dx.doi.org/10.1007/978-1-4615-1153-3_9.

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3

Mueller, O. M., and E. K. Mueller. "Cryogenic Power / Energy Distribution System." In Advances in Cryogenic Engineering, 1755–62. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/978-1-4615-4215-5_102.

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4

Billinton, Roy, and Ronald N. Allan. "Distribution System Adequacy Evaluation." In Reliability Assessment of Large Electric Power Systems, 147–82. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4613-1689-3_4.

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5

Mariano, S. J. P. S., J. A. N. Pombo, M. R. A. Calado, and J. A. M. Felippe de Souza. "Damping of Power System Oscillations with Optimal Regulator." In Electricity Distribution, 173–98. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-49434-9_7.

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6

"Geomagnetic Disturbances and Impacts upon Power System Operation." In Electric Power Generation, Transmission, and Distribution, 237–58. CRC Press, 2007. http://dx.doi.org/10.1201/9781420009255-23.

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7

Kappenman, John G. "Geomagnetic Disturbances and Impacts upon Power System Operation." In Electric Power Generation, Transmission, and Distribution: The Electric Power Engineering Handbook, 17–1. CRC Press, 2018. http://dx.doi.org/10.1201/9781315222424-17.

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8

Yingkayun, Krisda, and Suttichai Premrudeepreechachar. "A Power Quality Monitoring System Via the Ethernet Network Based on the Embedded System." In Electrical Generation and Distribution Systems and Power Quality Disturbances. InTech, 2011. http://dx.doi.org/10.5772/16538.

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9

Polycarpou, Alexis. "Power Quality and Voltage Sag Indices in Electrical Power Systems." In Electrical Generation and Distribution Systems and Power Quality Disturbances. InTech, 2011. http://dx.doi.org/10.5772/18181.

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10

Mebrahtu, Fsaha. "Voltage Drop Mitigation in Smart Distribution Network." In Handbook of Research on New Solutions and Technologies in Electrical Distribution Networks, 64–77. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-1230-2.ch004.

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Voltage dip in the distribution network is caused by disturbance at different voltage levels and experienced by low voltage customers are established. Voltage dips are those disturbances which damage the power quality of the distribution network and causing heavy economic damage to the customers. This chapter investigates procedures of mitigating the voltage dip by reducing the number of faults due to short circuits, lowering the fault clearing time, and changing the power system design and DSTATCOM Compensator with DG and dynamic voltage restorer.
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Тези доповідей конференцій з теми "Power distribution system disturbances"

1

Jingyuan Dong, Tao Xia, Yingchen Zhang, Tony Weekes, James S. Thorp, and Yilu Liu. "Monitoring power system disturbances at the distribution level." In Energy Society General Meeting. IEEE, 2008. http://dx.doi.org/10.1109/pes.2008.4596233.

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Ye, Yanzhu, and Yilu Liu. "Monitoring power system disturbances based on distribution-level phasor measurements." In 2012 IEEE PES Innovative Smart Grid Technologies (ISGT). IEEE, 2012. http://dx.doi.org/10.1109/isgt.2012.6175538.

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Ye, Yanzhu, Jingyuan Dong, and Yilu Liu. "Analysis of power system disturbances based on distribution-level phasor measurements." In 2011 IEEE Power & Energy Society General Meeting. IEEE, 2011. http://dx.doi.org/10.1109/pes.2011.6039694.

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4

Wilson, Aaron J., Bruce R. J. Warmack, Ryan A. Kerekes, and Patrick D. Brukiewa. "Comparison of Power System Current Sensors via Playback of Electrical Disturbances." In 2022 IEEE/PES Transmission and Distribution Conference and Exposition (T&D). IEEE, 2022. http://dx.doi.org/10.1109/td43745.2022.9816939.

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5

Hua, Liu, Zhao Baoqun, and Wang Guangjian. "Application of Wavelet Network for Automatic Power Quality Disturbances Recognition in Distribution Power System." In 2007 Chinese Control Conference. IEEE, 2006. http://dx.doi.org/10.1109/chicc.2006.4347509.

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6

Freitas, W., and L. C. P. da Silva. "Distribution system load modeling based on detection of natural voltage disturbances." In 2012 IEEE Power & Energy Society General Meeting. New Energy Horizons - Opportunities and Challenges. IEEE, 2012. http://dx.doi.org/10.1109/pesgm.2012.6345070.

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Dwivedi, U. D., S. N. Singh, and S. C. Srivastava. "Analysis of Transient Disturbances in Distribution Systems: A Hybrid Approach." In 2007 IEEE Power Engineering Society General Meeting. IEEE, 2007. http://dx.doi.org/10.1109/pes.2007.385940.

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Pavas, Andres, Horacio Torres, Diego Urrutia, Guillermo Cajamarca, Luis Gallego, and Leidy Buitrago. "A Novel Approach to the Simulation of Power Quality Disturbances in Electric Power Systems." In 2006 IEEE/PES Transmission & Distribution Conference and Exposition: Latin America. IEEE, 2006. http://dx.doi.org/10.1109/tdcla.2006.311423.

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Gallarreta, A., I. Fernández, D. De La Vega, J. González-Ramos, A. Arrinda, and I. Angulo. "Time characterization of fast variation disturbances generated by EV chargers." In CIRED Porto Workshop 2022: E-mobility and power distribution systems. Institution of Engineering and Technology, 2022. http://dx.doi.org/10.1049/icp.2022.0745.

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Noskov, R., I. Petrović, H. Glavaš, D. Šljivac, and T. Barić. "Analysis of Possibilities of Alleviating Repercussions Caused by Large Disturbances in the Power System." In Mediterranean Conference on Power Generation, Transmission, Distribution and Energy Conversion (MEDPOWER 2018). Institution of Engineering and Technology, 2018. http://dx.doi.org/10.1049/cp.2018.1863.

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Звіти організацій з теми "Power distribution system disturbances"

1

Gurdal, Zafer, Scott Ragon, and Douglas Lindner. Global/Local Design Optimization of a Power Distribution System. Fort Belvoir, VA: Defense Technical Information Center, September 2000. http://dx.doi.org/10.21236/ada387344.

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Gurdal, Zafer, Scott Ragon, and Douglas Lindner. Global/Local Design Optimization of A Power Distribution System. Fort Belvoir, VA: Defense Technical Information Center, March 2000. http://dx.doi.org/10.21236/ada389411.

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Clark, D. A. Test report light duty utility arm power distribution system (PDS). Office of Scientific and Technical Information (OSTI), March 1996. http://dx.doi.org/10.2172/483523.

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Tunc ALdemir, Don Miller, and Peng Wang. Development of An On-Line, Core Power Distribution Monitoring System. Office of Scientific and Technical Information (OSTI), October 2007. http://dx.doi.org/10.2172/920987.

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Filarowski, C. A. An automated system for studying the power distribution of electron beams. Office of Scientific and Technical Information (OSTI), December 1994. http://dx.doi.org/10.2172/96635.

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Nantista, Christopher. Overmoded Rectangular Waveguide Components for a Multi-Moded RF Power Distribution System. Office of Scientific and Technical Information (OSTI), July 2000. http://dx.doi.org/10.2172/763818.

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Reno, Matthew, Miguel Jimenez Aparicio, Felipe Wilches-Bernal, Javier Hernandez Alvidrez, Armando Montoya, Pedro Barba, Jack Flicker, et al. Signal-Based Fast Tripping Protection Schemes for Electric Power Distribution System Resilience. Office of Scientific and Technical Information (OSTI), September 2022. http://dx.doi.org/10.2172/1890046.

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N. Ramirez. RELIABILITY ANALYSIS OF THE ELECTRICAL POWER DISTRIBUTION SYSTEM TO SELECTED PORTIONS OF THE NUCLEAR HVAC SYSTEM. Office of Scientific and Technical Information (OSTI), December 2004. http://dx.doi.org/10.2172/841283.

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Cowles, Timothy J. Power Distribution and Data Acquisition for a Free-falling Oceanographic Profiling System (DURIP). Fort Belvoir, VA: Defense Technical Information Center, September 2007. http://dx.doi.org/10.21236/ada573378.

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Sharifnia, Hamidreza. Safety related model and studies of Trojan Nuclear Power Plant electrical distribution system. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.5758.

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