Pandelis N. Biskas

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This paper presents a new method for the decentralized solution of the dc optimal power flow (OPF) problem in large interconnected power systems. The method decomposes the overall OPF problem of a multiarea system into independent OPF subproblems, one for each area. The solutions of the OPF subproblems of the different areas are coordinated through a(More)
This paper presents a decentralized implementation of the DC Optimal Power Flow (OPF) problem on a network of workstations. Each workstation is assigned to a regional Transmission System Operator (TSO), who manages the operation of the transmission system of his own region, as well as cross-border exchanges with neighboring regions. The workstations take(More)
The vast installation of intermittent energy sources (especially wind) has distorted the normal strict pattern of the net demand (demand minus RES production), increasing the importance of real-time balancing markets, which handle efficiently imbalances between supply and demand. In this paper, the incorporation of demand response bids within a real-time(More)
Variable and uncertain conditions associated with increasing renewables introduce prominent challenges in the optimal power system operation and necessitate the reinforcement of flexible capability potential provided by the system resources. To address these challenges, some U.S. ISOs have incorporated specific “flexible ramp products” in their short-term(More)
A European Power Exchange day-ahead market with both simple and combinatorial products is modeled in this paper and cleared using Benders Decomposition. Except from simple hourly supply offers and demand bids, the products comprise supply and demand profile block offers/bids, and supply and demand linked profile block offers/bids. The problem constitutes a(More)
As electricity markets emerge, power exchanges and wheeling transactions become a common operating practice in most power systems. This paper considers an interim system which transfers power between two neighboring systems and presents a methodology to estimate the maximum secure wheeling transaction that the interim system is capable to support. By(More)
The uncertain and variable nature of renewable energy sources in modern power systems raises significant challenges in achieving the dual objective of reliable and economically efficient system operation. To address these challenges, advanced scheduling strategies have evolved during the past years, including the co-optimization of energy and reserves under(More)
This paper addresses the problem of quantifying the amount of spinning and non-spinning load-following reserves required for the normal operation of a power system under high wind penetration. A two-stage stochastic optimization problem is formulated; in the first stage the market operator clears the dayahead market, while in the second stage the real-time(More)
The integration of the European electricity market constitutes a critical and contemporary issue, expected to take place within year 2015. In view of the forthcoming RES penetration, physical markets with unit-based offers-either power pools or Power Exchanges (PXs)-check the feasibility of the electricity market solution against their intra-zonal(More)
In this paper the strict long-run marginal cost (LRMC) for the ratemaking of High Voltage (HV) consumers is computed, along with the constituent parts of LRMC, namely the marginal capacity cost and the marginal operating cost. The computation is performed using the perturbation approach, employing a generation expansion planning model in order to compute(More)