Bücher von Sonali Paunikar

Die Blindleistung ist eine der wichtigsten Hilfsdienste, und der Handel mit ihr wird auf den deregulierten Strommärkten zur Realität. Mit der Deregulierung des Elektrizitätssektors sollte jede elektrische Leistung im Stromsystem wirtschaftlich bewertet werden, und es müssen faire Regeln für die Bewertung und Vergütung festgelegt werden. In diesem Buch wurde eine quadratische Opportunitätskostenfunktion für Blindleistung aus den Kostenparametern der Wirkleistung und den Day-Ahead-Daten des Energiemarktes unter Verwendung der Fähigkeitskurve von Synchrongeneratoren abgeleitet, und somit die Gesamtzielfunktion durch Summierung der quadratischen Kostenfunktionen der Wirk- und Blindleistungserzeugung abgeleitet.Die Kosten der zusätzlichen Blindleistungsunterstützung in Bezug auf die Spannungssicherheitskosten werden als Differenz der Gesamtblindleistungskosten vor und nach der Blindleistungsunterstützung über die kritische Grenze des Generators hinaus bestimmt.

Le service de puissance réactive est l'un des principaux services auxiliaires et son commerce devient une réalité pour les marchés déréglementés de l'électricité. Avec la déréglementation du secteur de l'électricité, chaque service d'énergie électrique dans le système électrique doit être évalué économiquement et des règles équitables d'évaluation et de compensation doivent être établies. Dans ce livre, la fonction de coût d'opportunité quadratique pour la puissance réactive a été dérivée en termes de paramètres de coût de la puissance réelle et de données du marché de l'énergie à un jour en utilisant la courbe de capacité des générateurs synchrones, et donc la fonction objective globale est dérivée en additionnant les fonctions de coût quadratique de la production de puissance réelle et réactive.Le coût du soutien supplémentaire de la puissance réactive par rapport au coût de sécurité de la tension est déterminé comme la différence entre le coût total de la puissance réactive avant et après le soutien de la puissance réactive au-delà de la limite critique du générateur.

El servicio de energía reactiva es uno de los servicios auxiliares clave y su comercialización se está convirtiendo en una realidad para los mercados eléctricos desregulados. Con la desregulación del sector eléctrico, cada servicio de energía eléctrica del sistema eléctrico debe valorarse económicamente y es necesario establecer normas justas de evaluación y compensación. Esto ha generado la necesidad de cuantificar el valor y compensar el servicio de apoyo de potencia reactiva. En este libro, la función de coste de oportunidad cuadrática para la potencia reactiva se ha derivado en términos de parámetros de coste de potencia real y datos diarios del mercado energético utilizando la curva de capacidad de los generadores síncronos, y por lo tanto la función objetivo global se deriva de la suma de las funciones de coste cuadráticas de la generación de potencia real y reactiva.El coste del soporte de potencia reactiva adicional para la seguridad de la tensión se determina como la diferencia del coste total de potencia reactiva antes y después del soporte de potencia reactiva más allá del límite crítico del generador.

O serviço de energia reactiva é um dos principais serviços auxiliares e a sua comercialização está a tornar-se uma realidade nos mercados desregulamentados da eletricidade. Com a desregulamentação do sector da eletricidade, cada serviço de energia eléctrica no sistema elétrico deve ser avaliado economicamente e devem ser estabelecidas regras justas de avaliação e compensação. Neste livro, a função quadrática do custo de oportunidade da energia reactiva foi derivada em termos de parâmetros de custo da energia real e de dados do mercado da energia para o dia seguinte, utilizando a curva de capacidade dos geradores síncronos, pelo que a função objetivo global é derivada da soma das funções quadráticas de custo da produção de energia real e reactiva.O custo do apoio suplementar de potência reactiva em relação ao custo de segurança da tensão é determinado como a diferença do custo total da potência reactiva antes e depois do apoio de potência reactiva para além do limite crítico do gerador.

Usluga po peredache reaktiwnoj moschnosti qwlqetsq odnoj iz klüchewyh wspomogatel'nyh uslug, i torgowlq eü stanowitsq real'nost'ü dlq dereguliruemyh rynkow älektroänergii. V uslowiqh deregulirowaniq älektroänergetiki kazhdaq älektroänergeticheskaq usluga w änergosisteme dolzhna byt' äkonomicheski ocenena i dolzhny byt' ustanowleny sprawedliwye prawila ocenki i kompensacii. V ätoj knige kwadratichnaq funkciq al'ternatiwnoj stoimosti reaktiwnoj moschnosti byla wywedena w terminah parametrow stoimosti real'noj moschnosti i dannyh rynka älektroänergii na sutki wpered s ispol'zowaniem kriwoj wozmozhnostej sinhronnyh generatorow, i, takim obrazom, obschaq celewaq funkciq byla poluchena putem summirowaniq kwadratichnyh funkcij stoimosti real'noj i reaktiwnoj moschnosti.Stoimost' dopolnitel'noj podderzhki reaktiwnoj moschnosti dlq obespecheniq bezopasnosti naprqzheniq opredelqetsq kak raznost' obschih zatrat na reaktiwnuü moschnost' do i posle podderzhki reaktiwnoj moschnosti za kriticheskim predelom generatora.

Il servizio di potenza reattiva è uno dei principali servizi ausiliari e la sua negoziazione sta diventando una realtà per i mercati elettrici deregolamentati. Con la deregolamentazione del settore elettrico, ogni servizio di potenza elettrica nel sistema elettrico deve essere valutato economicamente e devono essere stabilite regole eque per la valutazione e la compensazione. In questo libro, la funzione quadratica del costo di opportunità per la potenza reattiva è stata derivata in termini di parametri di costo dell'energia reale e di dati del mercato dell'energia del giorno prima, utilizzando la curva di capacità dei generatori sincroni, e quindi la funzione obiettivo complessiva è derivata dalla somma delle funzioni di costo quadratiche della generazione di energia reale e reattiva.Il costo del supporto extra di potenza reattiva per la sicurezza della tensione è determinato come differenza del costo totale di potenza reattiva prima e dopo il supporto di potenza reattiva oltre il limite critico del generatore.

Reactive power service is one of the key ancillary services and the trading in it is becoming a reality for deregulated electricity markets. With deregulation of electricity sector each electric power service in the power system should be economically valued and the fair rules for evaluation and compensation need to be established. This has generated a need to quantify the value and to compensate the service of reactive power support. In this book, quadratic opportunity cost function for reactive power has been derived in terms of real power cost parameters and day-ahead data of energy market using capability curve of synchronous generators, and hence the overall objective function is derived by summing up of quadratic cost functions of real and reactive power generation. Cost of extra reactive power support towards the voltage security cost is determined as difference of total reactive power cost before and after reactive power support beyond critical limit of the Generator.

A coordinated Wide Area Damping Controller (WADC) based on the shunt connected FACTS based controllers and simultaneous tuning of FACTS based controller (specifically STATCOM and SVC)and fuzzy logic based global Power System Stabilizer (PSS) has been incorporated. A lead-lag based POD has been designed in the case of power system using STATCOM based Wide Area Damping Controller. The fuzzy logic based global PSS implemented for each area in two area four machine system is employing a global signal from power system as input to the stabilizer. The first input to the fuzzy logic controller incorporated in this book is speed deviation of respective generator and the second input is extracted from the active power transfer across the tie-line connecting both coherent areas. The output of fuzzy logic based global PSS provides the global stabilizing voltage signal for generator through its excitation system.

Voltage security assessment is an integral part of the modern Energy Management System. The traditional methods of contingency selection based on approximate or full AC load flow are either inaccurate or time consuming. To overcome these difficulties, development of fast, accurate and transparent voltage security assessment tools is required, so that in real-time, potentially dangerous operating conditions can be identified quickly and necessary corrective actions can be initiated within the given time frame of interest. Machine learning is a broad area of artificial intelligence, which is concerned with design and development of algorithms and techniques that allow computers to learn. Data mining is one of the branches of machine learning which uses past data for prediction of future results. In this book, data mining tools like fuzzy decision trees and case-based reasoning (CBR) is discussed in detail for application to voltage security assessment in power systems.

Understanding of the performance of self-excited induction generator as a nonlinear dynamic system when operating under a variety of load conditions, which would hopefully contribute to the development of a better regulated/controlled, viable SEIG system. The work presented in this book deals with performance analysis of three phase self-excited induction generator. Two algorithms artificial bee colony algorithm (ABC), brainstorming optimization algorithm (BSO) have been used to analyze the performance of SEIG.