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This papers presents a general formulation for obtaining a reduced-order model by using selective modal analysis. A reduction example with one and another with three relevant modes are shown. By using eigenvalue sensitivity with respect to a positive bus power injection (negative load), the impact of wind turbine generators (WTGs) on power system operation is analyzed. Lastly, electricity market issues...
The main objective of power system planning is maintaining an adequate level of reliability. The reliability concept has two characteristics: resource adequacy and operational reliability. Traditionally these two characteristics are addressed separately through a sequence of probabilistic and deterministic analyses without a systematic view. This paper presents a resource planning problem that explicitly...
Today's capacity markets may be viewed as an additional source of income for generators to compensate the money lost due to regulatory imposed caps. Those additional money flows and other design characteristics serve, theoretically, to achieve system adequacy in a market environment. In this paper, we analyze key aspects of today's capacity market designs. Our main finding is that some design elements...
The integration of wind resources into power systems entails new challenges at all levels of the electricity industry. In this paper, we discuss critical issues emerging due to the incorporation of wind power suppliers in existing electricity market designs. We discuss the impacts of wind power intermittency and uncertainty on the planning and operation of the system and markets. In particular, we...
We provide in this paper the first steps towards the quantification of the impacts of cyber attacks on the power grid. We present a review of key-issues on cyber security of power systems, and show the main challenges as well as complicating factors. In order to do the quantification, we propose the application of a conceptual four-layer framework that represents the physical, communication/control,...
Uncertainty management becomes a key challenge in the restructured electricity industry as the implementation of market processes increases the sources of uncertainty beyond those faced in the former vertically integrated industry. We focus on the assessment and management of uncertainty in the area of contracting for short- and mid-term supply contracts. Such contracts are drawn up with the successful...
The high prices of the outcomes of the 2006 Illinois Electricity Auction have generated considerably controversy because of their impacts in increasing retail electricity prices in Illinois. In this work, we present a review and a critical analysis of the design of, and the results obtained in, the reverse auction performed in September of 2006 for the two major distribution companies, ComEd and Ameren...
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