<span style="font-family: OptimaLTStd; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;">Due to its variability, wind generation integration presents a significant challenge to power system operators in order to maintain <span style="font-family: OptimaLTStd; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;">adequate reliability levels while ensuring least cost operation. This paper explores the trade-off between the benefits associated to a <span style="font-family: OptimaLTStd; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;">higher wind penetration and the additional operational reserve requirements that they impose. Such exploration is valued in terms <span style="font-family: OptimaLTStd; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;">of its effect on power system reliability, measured as an amount of unserved energy. The paper also focuses on how changing the <span style="font-family: OptimaLTStd; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;">Value of Lost Load (VoLL) can be used to attain different reliability targets, and how wind power penetration and the diversity of the <span style="font-family: OptimaLTStd; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;">wind energy resource will impact quality of supply (in terms of instances of unserved energy). The evaluation of different penetrations <span style="font-family: OptimaLTStd; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;">of wind power generation, different wind speed profiles, wind resource diversity, and different operational reserve requirements, is <span style="font-family: OptimaLTStd; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;">conducted on the Chilean Northern Interconnected System (SING) using statistical modeling of wind speed time series and computer <span style="font-family: OptimaLTStd; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;">simulation through a 24-hour ahead unit commitment algorithm and a Monte Carlo simulation scheme. Results for the SING suggest <span style="font-family: OptimaLTStd; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;">that while wind generation can significantly reduce generation costs, it can also imply higher security costs to reach acceptable <span style="font-family: OptimaLTStd; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;">reliability levels.</span></span></span></span></span></span></span></span></span></span><br style="font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" /><br class="Apple-interchange-newline" /></span>
Power system reliability impacts of wind generation and operational reserve requirements