Evaluating the Capacity Value of Wind Generation in Systems with Hydro Generation

Wind generation is envisaged to be a major contributor for meeting the targets for renewable energy and environment in various countries. However, the limited contribution of this generation source to system reliability requires increased capacity margins (generation capacity above system's maximum demand). This paper investigates the potential impact on the capacity value of wind generation due to the presence of hydro generation in systems. In order to quantify the adequacy of the overall generation capacity and capacity credit of wind generation in wind-hydro-thermal systems a new methodology based on loss of load expectation (LOLE) is developed. Various studies performed through implementing the new methodology establish that the capacity credit of wind generation can increase by up to 10% due to the support of hydro generation.