The integration of signi cant levels of variable generation into the electricity grid has increased the complexity of power system operations. The strong unpredictability of variable generation poses an important operating complexity and demands an adequate dimensioning and deployment of system reserves. This work establishes su cient conditions for the dimensioning and deployment of adequate reserves. These conditions involve the determi- nation of reserve requirements and the design of a frequency control system consistent with such requirements. The analysis is divided into the adequacy of primary and secondary reserves, and simulations of ERCOT validated by empirical data are considered. Adequacy criteria from current practices are used to evaluate the performance of the formulation. / text

Due to the increasing integration of renewable energy generations, the overvoltage and overload issues in transmission networks have become more significant, and they may occur at various locations. To mitigate the overvoltage issues, traditional solutions which often consider the installation of reactive power compensators such as shunt reactors, SVC, STATCOM may not be cost-effective. To mitigate the overload issues, traditional methods using direct or price-based demand control will affect customers’ electrical experience in that they are inconvenienced greatly. This thesis discusses the flexible tap changing techniques that utilise existing parallel transformers in distribution networks to provide reactive power absorption and demand response services for transmission systems. Among them, the tap stagger technique operates parallel transformers in small different tap positions, i.e. staggered taps, to result in more reactive power absorption from upstream networks. In addition, the tap changing technique changes voltages in the range of statutory limits through the adjustment of tap positions in order to change network demands without directly affecting customers. The aggregated reactive power absorption or demand response from many pairs of parallel transformers in distribution networks could be sufficient to provide VAr or demand support to transmission networks. Network capability studies have been carried out in OpenDSS simulation software to investigate the VAr absorption capability by using tap staggering technique and the demand reduction capability by using tap changing technique. The studies are based on two UK HV distribution networks (132-33kV) with 11 and 28 primary substations (33/11 or 6.6 kV) respectively, and the techniques are applied to parallel transformers in primary substations. Based on the results of the two networks, the capabilities of the whole ENW and the UK distribution networks have been estimated respectively by using linear estimation method. In addition, the VAr absorption capability of the tap stagger technique has been validated by using site trial data. The results show an average VAr absorption capability of 0.89MVAr for a primary substation, 315MVAr for ENW networks and about 2500MVAr for the UK at stagger level 4 and show an average demand reduction capability of 3.1% of the original demand at tap down level 3. The results of capability studies together with the validations results confirm that the flexible tap changing techniques are able to provide transmission networks with effective VAr support and demand response services. To assess network VAr absorption and demand response capability more precisely, this thesis also proposes an online load profile estimation method to estimate the load profiles of the network more accurately if not all substations in the network are monitored. The method uses Peak Load Share values, Euclidean Distance, and some load measurements to estimate load profiles. The method has been validated and compared with a traditional aggregation-based method. The results show an average estimation error of 13% ~ 23% in different conditions using the proposed method, and show an average estimation error reduction from about 47% (using the traditional method) to about 13% (using the proposed method). The results indicate that the developed method has a considerable improvement on the accuracy of load profile estimation.

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<p> The problem of obtaining a prediction interval at specified confidence level to contain k future observations from the Gumbel distribution, based on an observed sample from the same distribution, is considered. An existing method due to Hahn, which is originally valid for the normal, is adapted to the Gumbel case. Motivated by the equivalence between Hahn's prediction intervals and Bayesian predictive intervals for the normal, we develop Bayesian predictive intervals for the Gumbel in the case where the scale parameter b is both known and unknown. Furthermore, we perform comparison of Hahn's and Bayesian intervals. We find that the Bayesian is better in the b known case, while Hahn and Bayes perform about the same in the other case when b is unknown. We then consider the maximum of the Hahn's and Bayesian predicted lower limits which is shown to be a better predictor when b is unknown. All the discussions are based on Monte Carlo simulations. In the end, the results are applied to Ontario Power Generation data on feeder thicknesses.</p> / Thesis / Master of Science (MSc)

This master thesis investigates the impact of battery energy storage utilization in the ancillary services market on a local electricity grid. Specifically, the study examines the technical impact of battery energy storage installations and how grid operators should handle these types of installations in the future. To achieve this goal, battery energy storage systems simulations using MatLab software based on historical frequency data have been conducted creating an operation scheme for the battery. The battery simulation was applied to the electrical systems consumption and production data, conducting a whole year power flow simulation investigating the effects on peak power demand both for the customer and local grid owner. The worst-case scenarios were also investigated to assure that the grid could withstand the change in production and consumption at any time. The results indicate that such an installation would increase the peak power demand for the local grid owner by a maximum of 12 kW for one week but in general, it would result in a smaller increment and some small decrement. For the customer, the maximum impact is greater both in absolute numbers and in proportion to the peak power demand before with an increment of 16 kW, but in general, there will not be any impact on the effect tariff at all. The results of the worst-case scenario simulations showed that during backup power supply at high load timestamps in combination with FCR-D down there would be contingencies in one cable connection between two nodes, causing the cable current to increase above the rated current. To allow such an installment the local grid owner would need to limit the battery capacity and increase their billings to the customer, expand the dimension of the system or even, increase their effect tariffs to always ensure a stable electricity supply and stable financial balance.

Este trabalho apresenta as sínteses do complexo fac-[RuCl2(Sdmso3(O-dmso)] (1) e de dois novos complexos, trans,cis,cis- [RuCl2(S-dmso)2(NH2Ph)2] (2) e fac-[RuCl2(Sdmso)3(NH2Ph)] (3). Estes compostos foram caracterizados por espectroscopia de absorção na região do infravermelho, espectroscopia de absorção na região do ultravioleta e visível, análise elementar (CHN), RMN (1H e 13C{1H}) e por difração de raios X em monocristal, confirmando a formação de complexos hexacoordenados. As atividades catalíticas destes complexos como pré-catalisadores nas reações de polimerização via metátese por abertura de anel (ROMP) de norborneno (NBE), norbornadieno (NBD), diciclopentadieno (DCPD) e seus copolímeros foram investigadas. As polimerizações foram realizadas na presença de etil diazoacetato (EDA) em diferentes razões molares de [monômero]/[Ru], tempos e temperaturas de reação. Estudos em função da variação da razão molar [monômero]/[Ru] mostraram que, em geral, a melhor condição para reação via ROMP é a de 5000 equivalentes na presença de [EDA]/[Ru] = 28. Valores de massas moleculares com ordem de magnitude de 105 g.mol-1 para todos os poliNBE e poli(NBE-co-DCPD) foram medidos por cromatografia por permeação em gel (GPC). Os demais polímeros foram insolúveis em CHCl3. Em polimerizações com NBE a 25 °C por 50 min, obtiveram-se rendimentos de 91, 83 e 99 % usando os complexos 1, 2 e 3, respectivamente. Nas polimerizações de NBD, o complexo 1 rendeu 8 % de poliNBD a 50 °C em 30 min. Nestas mesmas condições, os complexos 2 e 3 renderam 42 e 34 % de poliNBD, respectivamente. Na ROMP de DCPD a 50 °C em 30 min, os três complexos sintetizaram poliDCPD com rendimentos em torno de 16 %. A 50 °C por 30 min, poli(NBE-co-NBD) com maior concentração de NBD (80NBD: 20NBE) usando os complexos 2 ou 3 foram obtidos com 35 % de rendimento, enquanto com o complexo 1 os rendimentos são de 15 %. Copolímeros do tipo poli(NBE-co-DCPD) foram obtidos com maiores rendimentos com o complexo 3 e com maiores valores de Mw usando o complexo 2. A influência do tipo de complexo e dos efeitos cooperativos dos ligantes foi avaliada neste tipo de reação com implicações nas características dos polímeros. / This work presents the syntheses of the complex fac-[RuCl2(Sdmso)3(O-dmso)] (1) and of the two new complexes trans,cis,cis- [RuCl2(S-dmso)2(NH2Ph)2] (2) and fac-[RuCl2(Sdmso)3(NH2Ph)] (3). These compounds were characterized by infrared absorption spectroscopy, ultraviolet-visible absorption spectroscopy, elemental analysis (CHN), NMR (1H and 13C{1H}) and by X-ray diffraction in single crystals, confirming the formation of hexacoordinate complexes. The catalytic activities of these complexes as pre-catalysts in ring-opening metathesis polymerization (ROMP) reactions of norbornene (NBE), norbornadiene (NBD), dicyclopentadiene (DCPD) and its copolymers were investigated. The polymerizations were carried out in presence of ethyl diazoacetate (EDA), in different molar ratios of [monomer]/[Ru], as a function of reaction time and temperature. Studies on the variation of the [monomer]/[Ru] molar ratio have shown that, in general, the best condition for the ROMP reaction is 5000 equivalents, in the presence of [EDA]/[Ru] = 28.Values of molecular weights with order of magnitude of 105 g.mol-1 for all polyNBE and poly(NBE-co-DCPD) were measured by gel permeation chromatography (GPC). The other polymers were insoluble in CHCl3. In polymerizations with NBE at 25 °C for 50 min, yields of 91, 83 and 99 % were obtained using complexes 1, 2 and 3, respectively. In the NBD polymerizations, complex 1 yielded 8 % of polyNBD at 50 °C for 30 min. Under these same conditions, complexes 2 and 3 yielded 42 and 34 % of polyNBD, respectively. In the ROMP of DCPD at 50 °C for 30 min, the three complexes synthesized polyDCPD in yields of about 16 %. At 50 °C for 30 min, poly(NBE-co-NBD) with higher concentration of NBD (80NBD : 20NBE) using complexes 2 or 3 were obtained in 35% yield, while with complex 1 the yields were 15 %. Poly(NBE-co-DCPD) copolymers were obtained in higher yields with complex 3 and higher Mw values using complex 2. The influence of the type of complex and the cooperative effects of the ligands were evaluated in this type of reaction with implications in the characteristics of the polymers.

Os complexos do tipo [RuCl2(PPh3)2amina], amina = pip (1) ou pep (2), foram estudados como iniciadores catalíticos para reações de ROMP de NBE, NBD e oxaNBE-OMe e na ROMCP de NBE com NBD e oxaNBE-OMe com NBE. O complexo [RuCl2(PPh3)(pep)(isn)] (3) foi estudado na ROMP de NBE e NBD. Os complexos 2 e 3 são inéditos e suas caracterizações são discutidas e correlacionadas com o complexo com 1. As reações de catálises foram realizadas com variações de tempo, volume de solvente e temperatura, em atmosfera de Ar ou ar e na presença de EDA. <br />O rendimento foi quantitativo na ROMP de NBE com o complexo 1 em 2 mL de CHCl3, por 5 min a 25 &deg;C em Ar, com IPD de 1,9 e Mw na ordem de 106 g mol-1. Com o complexo 2, os rendimentos foram quantitativos (IPD ~ 3 e Mw na ordem de 104 g mol-1) e independentes do tempo (5 -120 min) e volume de solvente (2 - 8 mL). Com 3, os rendimentos diminuíram com o aumento do volume de solvente, mas com IPD ~ 2 e Mw na ordem de 104 g mol-1. Em todos os casos os rendimentos diminuíram em atmosfera de ar e com polímeros polimodais. <br />Rendimentos quantitativos de poliNBD foram obtidos com 1 a 40 &deg;C e com 2 a 25 &deg;C na faixa de volume de solvente estudada, por 60 e 120 min, em Ar. Os rendimentos com 3 foram inferiores a 35%. Foram também obtidos rendimentos quantitativos em atmosfera de ar em certas combinações de tempo e volume de solvente, indicando que os complexos são robustos para atividades em soluções contendo O2. Todos os polímeros de NBD foram insolúveis. <br />Obteve-se até 70% de poli(NBE-co-NBD) isolado a partir de reações com 1 e reações quantitativas com 2, dependendo da fração molar NBE:NBD usada, indicando as razões de reatividades do complexos. <br />A ROMP de oxaNBE-OMe com 1 ou com 2 formou 15 a 30% de rendimento, a 40 &deg;C por 24 h em Ar. Na ROMCP desse monômero com NBE obteve-se de 5 a 30% de rendimento, dependendo da fração molar. Os rendimentos são maiores nas frações molares com maior quantidade de NBE. Poli(oxaNBE-OMe) foi solúvel, enquanto que seus copolímeros foram pouco solúveis. <br />São realizadas discussões quantos às características eletrônicas e de impedimentos estéricos nos complexos estudados nas polimerizações via metátese, selecionando-se os ligantes ancilares frente às condições de reações para obtenções de bons rendimentos e características dos polímeros isolados. / The complexes of type [RuCl2(PPh3)2amina], amine = pip (1) or pep (2), were studied as catalytic initiators for ROMP of NBE, NBD and oxaNBE-OMe and for ROMCP of NBE with NBD and oxaNBE-OMe with NBE. The complex [RuCl2(PPh3)(pep)(isn)] (3) was studied for ROMP of NBE and NBD. The complexes 2 and 3 are novels and their characterizations are discussed and correlated with the complex 1. The catalysis reactions were performed with variations of time, volume of solvent and temperature, either in Ar or air atmosphere, in the presence of EDA. <br />The yield was quantitative for ROMP of NBE with complex 1 in 2 mL of CHCl3 for 5 min at 25 &deg;C in Ar, with PDI of 1.9 and Mw in the order of 106 g mol-1. With the complex 2, the yields were quantitatives (PDI ~ 3 and Mw in the order of 104 g mol-1) and independent of time (5 - 120 min) and volume of solvent (2 - 8 mL). With 3, the yields decreased when increasing the volume of solvent, but with PDI ~ 2 and Mw in the order of 104 g mol-1. In all the cases, the yields decreased in air atmosphere with polymodal polymers. <br />Quantitative yields of poliNBD were obtained with 1 at 40 &deg;C and with 2 at 25 &deg;C in the range of the studied volume of solvent, for 60 and 120 min, in Ar. The yields with 3 were less than 35%. Quantitative yields were also obtained in air atmosphere in some combinations of time and volume of solvent, indicating that the complexes are robust for activities in solutions containing O2. All polyNBD were insoluble. <br />It was obtained up to 70% of poly(NBE-co-NBD) isolated from reactions with 1 and quantitative reactions were obtained with 2, depending on the NBE:NBD molar fraction used, indicating the reactivity ratios for the complexes. <br />The ROMP of oxaNBE-OMe with 1 or with 2 yielded 15 to 30% at 40 &deg;C for 24h in Ar. In the ROMCP of this monomer with NBE, it was obtained from 5 to 30% yield, depending on the molar fraction. Yields are higher in molar fractions with higher amount of NBE. Poly(oxaNBE-OMe) was soluble, while its copolymers were poorly soluble. <br />Discussions are held on the electronic characteristics and steric hindrances in the studied complexes for the metathesis polymerization, selecting the ancillary ligands as a function of the reaction conditions to obtain good yields and to improve the characteristics of the isolated polymers.

Cette thèse porte sur les problèmes de stabilité en fréquence et en tension des microréseaux isolés avec forte pénétration d'énergies renouvelables en utilisant des dispositifs de stockage d'énergie, et se divise en deux parties principales.Dans la première partie, nous proposons une conception systématique d'une structure de commande robuste multi-variable pour le réglage de fréquence dans un système de génération de puissance hybride diesel-photovoltaïque-supercondensateur fonctionnant en mode autonome. La structure de commande proposée repose sur une architecture à deux niveaux: les contrôleurs d'asservissement de courant basés sur commande PI classique sont placés sur le niveau de commande inférieur et reçoivent des références d'un niveau supérieur qui, lui, est basé sur commande H-infini. Une méthodologie compréhensive qui traduit les demandes d'ingénierie spécifiques de l'opération du microréseau dans le formalisme de commande H-infini est détaillée. Nous montrons également comment les spécifications de performance dynamiques en boucle fermée doivent à leur tour être prises en compte dans la configuration et le dimensionnement initiaux du microréseau, c'est-à-dire en choisissant de manière appropriée et en évaluant le système de stockage d'énergie. Ensuite, une analyse de performance robuste du contrôleur H-infini synthétisé en présence de diverses perturbations de charge, des variations de puissance active de la source photovoltaïque, et des incertitudes du modèle est effectuée afin de déterminer la plage de variation maximale des paramètres pour laquelle les performances de commande imposées sont respectées pour le point de fonctionnement considéré. Les simulations numériques réalisées avec MATLAB/Simulink montrent l'efficacité de la stratégie de commande robuste de fréquence proposée sur un microréseau d'ordre de quelques MVA. Un banc de test de prototypage rapide, qui est composé d'un système de stockage d'énergie réel à base de supercondensateurs et un réseau diesel-photovoltaïque-charge émulé, est développé afin de valider expérimentalement cette stratégie de commande.La deuxième partie de cette thèse se concentre sur le calcul d'un contrôleur de tension multi-variable basé sur commande H-infini afin de forcer robustement l'amplitude de tension du point de couplage commun à satisfaire des spécifications dynamiques. La même idée de la structure de commande à deux niveaux en cascade - où ce contrôleur est placé sur un niveau de commande supérieur et fournit les références de courant aux contrôleurs de courant placés sur un niveau inférieur - est également adoptée. Ensuite, la performance et la robustesse du contrôleur H-infini proposé en présence de diverses perturbations de puissance réactive de la charge et de la source photovoltaïque, ainsi que des incertitudes du modèle, sont étudiées en utilisant des simulations temporelles MATLAB/Simulink. / This thesis addresses the frequency and voltage stability issues of stand-alone microgrids with high penetration of renewable energy by making use of energy storage devices, and is divided into two main parts.In the first part, we propose a systematic design of a multi-variable robust control structure for frequency regulation in a diesel-photovoltaic-supercapacitor hybrid power generation system operating in stand-alone mode. The proposed control structure relies on a two-level architecture: classical PI-based current tracking controllers are placed on the low control level and receive references from an H-infinity-control-based upper level. A comprehensive methodology that casts the specific engineering demands of microgrid operation into H-infinity control formalism is detailed. It is also shown how closed-loop dynamic performance requirements must at their turn be taken into account in the initial microgrid setup and sizing, namely in appropriately choosing and rating the energy storage system. Then, a robust performance analysis of the synthesized H-infinity controller in the presence of various load disturbances, photovoltaic output active power variations, and model uncertainties is carried out in order to determine the maximum parameter variation range for which the imposed control performances are respected for the considered operating point. Numerical simulations performed with MATLAB/Simulink show the effectiveness of the proposed frequency robust control strategy on a MVA-rated microgrid. A rapid-prototyping test bench, which is composed of a real supercapacitor-based energy storage system and an emulated diesel-photovoltaic-load grid, is developed in order to experimentally validate this control strategy.The second part of this thesis focuses on computing an H-infinity-based multi-variable voltage controller in order to robustly force the voltage magnitude of the point of common coupling to satisfy dynamic specifications. The same idea of cascaded two-level control structure - where this controller is placed on an upper control level and provides the references to current controllers placed on a lower level - is aslo adopted. Then, the performance and robustness of the proposed H-infinity controller in the presence of various load and photovoltaic reactive power disturbances, as well as model uncertainties, are studied based on MATLAB/Simulink time-domain simulations.

Este trabalho investigou a influência das propriedades estéricas e eletrônicas de ligantes ancilares em complexos do tipo [RuCl2(PR3)3] e [RuCl2(PR3)xLy], onde R = p-toluil e L = piperidina, N-butilamina e isonicotinamida, em reações de polimerização via metátese por abertura de anel (ROMP) e de copolimerização via metátese por abertura de anel (ROMCP) de norborneno (NBE) e norbornadieno (NBD). O objetivo foi observar como o efeito estéreo (dado em função do ângulo de cone, &theta;) e eletrônico (dado em função de pKa) da PpTol3 pode influenciar a reatividade em ROMP e ROMCP quando está sozinha ou combinada com amina. <br /> O complexo [RuCl2(PpTol3)3] (1) produziu rendimentos melhores que 70% por 10 min a 23 &deg;C, com Mw na ordem de 104 g.mol-1 e IPD de 2,2. O melhor rendimento obtido quando o complexo [RuCl2(PpTol3)2(pip)] (2) é utilizado foi observado nas reações por 30 min a 50 &deg;C (80,2%) com Mw de 1,5 x 105 g.mol-1. IPD de 2,0 foi obtido com 2 por 60 min a 23 &deg;C. O complexo 2 demonstrou ser mais reativo que o complexo 1 nas reações de ROMP de NBD, com rendimento de 60,1% por 60 min a 50 &deg;C. O impedimento estéreo de PpTol3 em 1, provavelmente é o responsável pelo melhor desempenho com NBE, com um período de indução mais curto para iniciar a ROMP. Por outro lado, o sinergismo amina&rarr;Ru&rarr;olefina deve contribuir para a ativação de NBD com 2. <br /> Os rendimentos para poliNBE com os complexos contendo N-butilamina e isonicotinamida foram de 68 e 35%, respectivamente, por 60 min a 50 &deg;C, isso mostra que a atividade catalítica para estes complexos sobrepõe o baixo ângulo de cone da Nbutilamina e a capacidade de retrodoação da isonicotinamida. Os rendimentos para o poliNBD foram de 30,9 e 9,1, respectivamente. <br /> As reações de copolimerizações com NBE e NBD (ROMCP) foram realizadas com uma quantidade fixa de NBE ([NBE]/[Ru] = 5000) e diferentes concentrações de NBD ([NBD]/[Ru] = 1000, 2000 ou 3000), por 60 min a 50&deg;C. Para ambos os complexos 1 e 2, os rendimentos foram acima de 80% quando aumentou-se a [NBD] e os materiais poliméricos apresentaram microestruturas lisas. Os valores de Tg (acima de 60 &deg;C) obtidos quando o complexo 1 foi utilizado, sugerem a presença de NBD nas cadeias poliméricas. Com o complexo 2, os valores de Tg foram entre 33 e 37 &deg;C, indicando a possibilidade de polimerização apenas do NBE. / This study investigated the influence of steric and electronic properties of ancillary ligands in complexes of the type [RuCl2(PR3)3] and [RuCl2(PR3)xLy], with R = p-tolyl and L = piperidine, N-butylamine and isonicotinamide, for ring-opening metathesis polymerization (ROMP) and ring-opening metathesis copolymerization of norbornene (NBE) and norbornadiene (NBD). The aim was to observe how the steric (in terms of the cone angle, &theta;) and electronic (in terms of pKa) effects of PpTol3 can tune the reactivity in ROMP and ROMCP when alone or combining with an amine. <br /> The [RuCl2(PpTol3)3] complex (1) produced yields better than 70% for 10 min at 23 &deg;C, with Mw in the order of 104 g.mol-1 and PDI of 2,2. The best yields obtained when the complex [RuCl2(PpTol3)2(pip)] (2) was used was observed in the reactions 30 min at 50 &deg;C (80%), with Mw of 1.5 x 105 g.mol-1. PDI of 2.0 was obtained with 2 for 60 min at 23 &deg;C. The complex 2 proved to be more reactive than complex 1 for ROMP of NBD, with yield of 60.1% for 60 min at 50 &deg;C. The steric hindrance of PpTol3 in 1 probable provided the difference in the reactive for NBE, with a short induction period to initiate the ROMP. However, the amine&rarr;Ru&rarr;olefin synergism in 2 probable contributed to the better activation of NBD. <br /> The yields for polyNBE with the N-butylamine and isonicotinamide derivative complexes were 68 and 35%, respectively, for 60 min at 50 &deg;C., it shows that the catalytic activity of these complexes to overlap the low cone angle of the N-butylamine and the ability of the backdonation of the isonicotinamide. Proceeds to poliNBD were 30.9 and 9.1, respectively. <br /> Copolymerizations with NBE and NBD (ROMCP) were performed with a fixed quantity of NBE ([NBE]/[Ru] = 5000) and different concentrations of NBD ([NBD]/[Ru] = 1000, 2000 or 3000), for 60 min at 50 &deg; C. The yields were better than 80% when increasing the [NBD] and the polymeric materials showed smooth microstructures. The obtained Tg values (60 &deg;C) obtained when the complex 1 was used, indicated the presence of NBD in the polymer chains. With the complex 2, the Tg values were in the range of 33 - 37 &deg;C, indicating the possibility of polymerization of only NBE.

Este trabalho apresenta as sínteses do complexo fac-[RuCl2(Sdmso3(O-dmso)] (1) e de dois novos complexos, trans,cis,cis- [RuCl2(S-dmso)2(NH2Ph)2] (2) e fac-[RuCl2(Sdmso)3(NH2Ph)] (3). Estes compostos foram caracterizados por espectroscopia de absorção na região do infravermelho, espectroscopia de absorção na região do ultravioleta e visível, análise elementar (CHN), RMN (1H e 13C{1H}) e por difração de raios X em monocristal, confirmando a formação de complexos hexacoordenados. As atividades catalíticas destes complexos como pré-catalisadores nas reações de polimerização via metátese por abertura de anel (ROMP) de norborneno (NBE), norbornadieno (NBD), diciclopentadieno (DCPD) e seus copolímeros foram investigadas. As polimerizações foram realizadas na presença de etil diazoacetato (EDA) em diferentes razões molares de [monômero]/[Ru], tempos e temperaturas de reação. Estudos em função da variação da razão molar [monômero]/[Ru] mostraram que, em geral, a melhor condição para reação via ROMP é a de 5000 equivalentes na presença de [EDA]/[Ru] = 28. Valores de massas moleculares com ordem de magnitude de 105 g.mol-1 para todos os poliNBE e poli(NBE-co-DCPD) foram medidos por cromatografia por permeação em gel (GPC). Os demais polímeros foram insolúveis em CHCl3. Em polimerizações com NBE a 25 °C por 50 min, obtiveram-se rendimentos de 91, 83 e 99 % usando os complexos 1, 2 e 3, respectivamente. Nas polimerizações de NBD, o complexo 1 rendeu 8 % de poliNBD a 50 °C em 30 min. Nestas mesmas condições, os complexos 2 e 3 renderam 42 e 34 % de poliNBD, respectivamente. Na ROMP de DCPD a 50 °C em 30 min, os três complexos sintetizaram poliDCPD com rendimentos em torno de 16 %. A 50 °C por 30 min, poli(NBE-co-NBD) com maior concentração de NBD (80NBD: 20NBE) usando os complexos 2 ou 3 foram obtidos com 35 % de rendimento, enquanto com o complexo 1 os rendimentos são de 15 %. Copolímeros do tipo poli(NBE-co-DCPD) foram obtidos com maiores rendimentos com o complexo 3 e com maiores valores de Mw usando o complexo 2. A influência do tipo de complexo e dos efeitos cooperativos dos ligantes foi avaliada neste tipo de reação com implicações nas características dos polímeros. / This work presents the syntheses of the complex fac-[RuCl2(Sdmso)3(O-dmso)] (1) and of the two new complexes trans,cis,cis- [RuCl2(S-dmso)2(NH2Ph)2] (2) and fac-[RuCl2(Sdmso)3(NH2Ph)] (3). These compounds were characterized by infrared absorption spectroscopy, ultraviolet-visible absorption spectroscopy, elemental analysis (CHN), NMR (1H and 13C{1H}) and by X-ray diffraction in single crystals, confirming the formation of hexacoordinate complexes. The catalytic activities of these complexes as pre-catalysts in ring-opening metathesis polymerization (ROMP) reactions of norbornene (NBE), norbornadiene (NBD), dicyclopentadiene (DCPD) and its copolymers were investigated. The polymerizations were carried out in presence of ethyl diazoacetate (EDA), in different molar ratios of [monomer]/[Ru], as a function of reaction time and temperature. Studies on the variation of the [monomer]/[Ru] molar ratio have shown that, in general, the best condition for the ROMP reaction is 5000 equivalents, in the presence of [EDA]/[Ru] = 28.Values of molecular weights with order of magnitude of 105 g.mol-1 for all polyNBE and poly(NBE-co-DCPD) were measured by gel permeation chromatography (GPC). The other polymers were insoluble in CHCl3. In polymerizations with NBE at 25 °C for 50 min, yields of 91, 83 and 99 % were obtained using complexes 1, 2 and 3, respectively. In the NBD polymerizations, complex 1 yielded 8 % of polyNBD at 50 °C for 30 min. Under these same conditions, complexes 2 and 3 yielded 42 and 34 % of polyNBD, respectively. In the ROMP of DCPD at 50 °C for 30 min, the three complexes synthesized polyDCPD in yields of about 16 %. At 50 °C for 30 min, poly(NBE-co-NBD) with higher concentration of NBD (80NBD : 20NBE) using complexes 2 or 3 were obtained in 35% yield, while with complex 1 the yields were 15 %. Poly(NBE-co-DCPD) copolymers were obtained in higher yields with complex 3 and higher Mw values using complex 2. The influence of the type of complex and the cooperative effects of the ligands were evaluated in this type of reaction with implications in the characteristics of the polymers.