One of the great challenges to increasing the use of wind generation is the need to ensure generation adequacy. In this dissertation, we address that need by investigating and assessing the planning and operational generation adequacy of power systems with significant wind generation. At the onset of this dissertation, key metrics are presented for determining a power system’s generation adequacy assessment based on loss-of-load analytical methods. With these key metrics understood, a detailed methodology is put forward on how to integrate wind plants in the assessment’s framework. Then, through the examination of a case study, we demonstrate that wind generation does contribute capacity to the system generation adequacy. Indeed, results indicates that at wind penetration levels of less than 5%, a wind plant’s reliability impact is comparable to an energy equivalent conventional unit. We then show how to quantify a wind plant’s capacity contribution by using the effective load carrying capability metric (ELCC), providing a detailed description of how to implement this metric in the context of wind generation. However, as certain computational setbacks are inherent to the metric, a novel noniterative approximation is proposed and applied to various case studies. The accuracy of the proposed approximation is evaluated in a comparative study by contrasting the resulting estimates to conventionally-computed ELCC values and the wind plant’s capacity factor. The non-iterative method is shown to yield accurate ELCC estimates with relative errors averaging around 2%. Case study findings also suggest the importance of period-specific ELCC calculations to better evaluate the variable capacity contribution of wind plants. Even when considering a well-planned system in which wind generation has been appropriately integrated in the adequacy assessment, wind plants do create significant challenges in maintaining generation adequacy on an operational level. To address these challenges, a novel operational reliability assessment tool is proposed to quantitatively evaluate the system’s operational generation adequacy given potential generator forced outages, load and wind power forecasts, and forecasting deviations. / text

The thesis will focus on outlooks of the Czech energy system, especially with respect to supply-demand balance and generation adequacy. The current situation in the electricity market will be used as a starting point for projections of future scenarios. The scenarios will look at possible issues and challenges as well as further developments that the Czech energy system will be facing in the near future. These problems and challenges can be defined as the mid-term and long-term ability to balance supply and demand for electricity in the Czech Republic. The increase in production of electricity from renewable resources and the subsequent loss of flexibility of power sources go hand in hand with adverse economic conditions, together worsening the overall risk in the electricity system. At the same time we must take into account changes in EU energy policy and its effect on member countries, such as the planned shutdown of nuclear power plants in Germany, increased taxation of carbon dioxide production, supported production of electricity from renewable resources, and integration of energy markets. We must consider the harmonization of methods that are used to evaluate the adequacy and security of a production portfolio, known as a generation adequacy, while meeting the requirements of the given system and...