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Abstract(s)
Atualmente as empresas produtoras de energia concorrem em mercado com as suas centrais para satisfazer
a procura em cada momento, tornando-se crucial o desempenho do seu portfólio de geração. Cada central tem de ser capaz de responder eficazmente às constantes solicitações a que está sujeita, deve entrar e sair da rede à hora contratada e variar a carga conforme o plano estabelecido em mercado. Se falhar nestes
compromissos pode originar desvios com consequentes impactos económicos, daí ser importante realizar uma análise cuidadosa ao desempenho técnico dos aproveitamentos, podendo esta ser efetuada recorrendo a indicadores de exploração.
O trabalho apresentado resume-se ao estudo do funcionamento do Mercado Ibérico de Eletricidade (MIBEL),
bem como na contribuição da energia hidroelétrica no seu funcionamento. Foram abordados os indicadores de exploração utilizados pela EDP Produção no controlo dos seus aproveitamentos hidroelétricos.
Foi realizada a análise estatística aos resultados do MIBEL, criado em julho de 2007 consequência dos
processos de reestruturação do setor elétrico, no ano de 2016. Relativamente ao mercado diário, a análise foi feita à quantidade de energia transacionada, ao preço da energia transacionada, ao volume económico
transacionado, à ativação ou não do mecanismo de Market Splitting e às tecnologias que contribuem para a
produção de energia e que marcam o preço de mercado. No mercado intradiário, analisaram-se os resultados relativos à quantidade e preço da energia transacionada e ao volume económico respetivo. No mercado diário e intradiário foi ainda feita uma análise comparativa aos resultados registados desde a abertura do MIBEL até ao ano em estudo. Além do mercado diário e intradiário, foi estudado o mercado de serviços de sistema, em particular as reservas de regulação secundária e terciária, tendo sido feita uma análise estatística aos
resultados de 2016 e uma comparação dos mesmos com os dois anos anteriores. Foi também feito um estudo aos desvios de mercado relativos à EDP nos anos de 2015 e 2016.
Em consequência da liberalização do mercado e consequente aumento da competitividade, as empresas
passaram a exigir mais dos seus centros produtores no sentido de aumentar o nível de controlo e de
estabelecer novos critérios para avaliação dos processos de produção. Assim, caracterizam-se os indicadores de exploração mais relevantes na gestão dos aproveitamentos hídricos pertencentes à EDP Produção, tendo
uma atenção especial ao desempenho técnico das máquinas geradoras, principais responsáveis pela produção de energia elétrica. Além da caracterização dos indicadores é efetuada uma explicação detalhada ao processo de cálculo, tendo sido desenvolvida uma aplicação para o cálculo automático dos indicadores em MatLab.
Nowadays, the energy producing companies compete in the market with their powerplant to satisfy the demand at all times, making the performance of their generation portfolio crucial. Each powerplant must be capable of efficiently answer to the constant requests it is subject to, must enter and leave the network at the hired time and vary the load according to the plan established in the market. Failure to comply with these commitments may lead to deviations with economic impacts. Therefore, it is important to carry out a carefull analysis of the technical performance of the operations, which may be carried out using exploration indicators. The work here presented is a study of the operation of the Iberian Electricity Market (MIBEL), as well as the contribution of hydroelectric energy in its operation. The exploration indicators used by EDP Produção in the control of its hydropower plants use were discussed. A statistical analysis was performed on the results of MIBEL, created in July 2007 as a consequence of the restructuring processes of the electricity sector, in the year 2016. Regarding the daily market, the analysis was made to the amount of transacted energy, to the energy price, to the transacted economic volume, to the activation, or not, of the Market Splitting mechanism and the technologies that contribute to the production of energy and which define the market price. In the intraday market, the results were analysed regarding the quantity and price of transacted energy and the respective economic volume. In the daily and intraday market, a comparative analysis of the results recorded since the opening of MIBEL until the year under study, was also made. In addition to the daily and intraday market, the system services market was studied, in particular the reserves of secondary and tertiary regulation, with a statistical analysis being performed on the results of 2016 and a comparison of these results with the previous two years. A study regarding the market deviations relative to EDP in the years 2015 and 2016 was also made. As a result of market liberalization and consequent increase in competitiveness, companies are now demanding more from their producer centers to increase the level of control and to establish new criteria for the assessment of production processes. Thus, the most relevant exploration indicators in the management of the water resources belonging to EDP Produção are characterized, with special attention to the technical performance of the generating machines, the main ones responsible for the production of electric energy. In addition to the characterization of the indicators, a detailed explanation of the calculation process is given and an application has been developed in MatLab for the automatic calculation of the indicators.
Nowadays, the energy producing companies compete in the market with their powerplant to satisfy the demand at all times, making the performance of their generation portfolio crucial. Each powerplant must be capable of efficiently answer to the constant requests it is subject to, must enter and leave the network at the hired time and vary the load according to the plan established in the market. Failure to comply with these commitments may lead to deviations with economic impacts. Therefore, it is important to carry out a carefull analysis of the technical performance of the operations, which may be carried out using exploration indicators. The work here presented is a study of the operation of the Iberian Electricity Market (MIBEL), as well as the contribution of hydroelectric energy in its operation. The exploration indicators used by EDP Produção in the control of its hydropower plants use were discussed. A statistical analysis was performed on the results of MIBEL, created in July 2007 as a consequence of the restructuring processes of the electricity sector, in the year 2016. Regarding the daily market, the analysis was made to the amount of transacted energy, to the energy price, to the transacted economic volume, to the activation, or not, of the Market Splitting mechanism and the technologies that contribute to the production of energy and which define the market price. In the intraday market, the results were analysed regarding the quantity and price of transacted energy and the respective economic volume. In the daily and intraday market, a comparative analysis of the results recorded since the opening of MIBEL until the year under study, was also made. In addition to the daily and intraday market, the system services market was studied, in particular the reserves of secondary and tertiary regulation, with a statistical analysis being performed on the results of 2016 and a comparison of these results with the previous two years. A study regarding the market deviations relative to EDP in the years 2015 and 2016 was also made. As a result of market liberalization and consequent increase in competitiveness, companies are now demanding more from their producer centers to increase the level of control and to establish new criteria for the assessment of production processes. Thus, the most relevant exploration indicators in the management of the water resources belonging to EDP Produção are characterized, with special attention to the technical performance of the generating machines, the main ones responsible for the production of electric energy. In addition to the characterization of the indicators, a detailed explanation of the calculation process is given and an application has been developed in MatLab for the automatic calculation of the indicators.
Description
Keywords
Liberalização MIBEL Mercado diário Mercado intradiário Mercado de serviços de sistema Aproveitamentos Hidroelétricos Indicadores de exploração Liberalization Daily market Intraday market System Services Market Hydropower Plants Exploration Indicators