References of "Rosehart, William"
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See detailTest systems for voltage stability analysis and security assessment
Van Cutsem, Thierry ULiege; Glavic, Mevludin ULiege; Rosehart, William et al

Report (2015)

This report documents the work of the IEEE PES Task Force on Test Systems for Voltage Stability Analysis and Security Assessment. The report starts with a short introduction about the motivation and the ... [more ▼]

This report documents the work of the IEEE PES Task Force on Test Systems for Voltage Stability Analysis and Security Assessment. The report starts with a short introduction about the motivation and the scope of the work. Next, the models of respectively the Nordic and the RVS test systems are presented in detail, together with a sample of long-term dynamic simulations of their responses to large disturbances. Appendices are devoted to complementary analyses and simulation results obtained with other time-domain simulation software. The system data and a sample of representative outputs are available on a Web site maintained by the Dynamic Security Assessment Working Group of the Power System Dynamic Performance Committee (please refer to http://ewh.ieee.org/soc/pes/psdpc/index.htm for more information). [less ▲]

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See detailLinearized Power Flow Equations Based Predictive Control of Transmission Voltages
Hajian, Mahdi; Rosehart, William; Glavic, Mevludin et al

in Proceedings of the 46th Hawaii International Conference on System Sciences (HICSS-46) (2013, January)

In this paper, an approach based on the concept of Model Predictive Control (MPC) is used to control transmission voltages and prevent long-term voltage instability. The MPC model is based on a linearized ... [more ▼]

In this paper, an approach based on the concept of Model Predictive Control (MPC) is used to control transmission voltages and prevent long-term voltage instability. The MPC model is based on a linearized steady-state system model derived from power flow equations. Simulation results are presented for the case of Nordic32 test system. [less ▲]

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See detailA Chance-Constrained Optimization Approach for Control of Transmission Voltages
Hajian, Mahdi; Glavic, Mevludin ULiege; Rosehart, William et al

in IEEE Transactions on Power Systems (2012), 27(3), 1568-1576

In this paper, a chance-constrained optimization (CCO) is presented to handle uncertainty in control of transmission voltages. A control scheme is proposed using a steady-state system model to achieve the ... [more ▼]

In this paper, a chance-constrained optimization (CCO) is presented to handle uncertainty in control of transmission voltages. A control scheme is proposed using a steady-state system model to achieve the goal of online voltage control and preventing long-term voltage instability. In order to model steady-state system response, the long-term model of governors and Automatic Voltage Regulators are employed in the control scheme. The Nordic32 test system is selected to show the simulation results of the proposed technique. [less ▲]

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See detailReceding-horizon multi-step optimization to correct nonviable or unstable transmission voltages
Glavic, Mevludin; Hajian, Mahdi; Rosehart, William et al

in IEEE Transactions on Power Systems (2011), 26(3), 1641-1650

In this paper, a receding-horizon multi-step optimization is proposed to correct non viable transmission voltages and prevent long-term voltage instability. The proposed control scheme is based on real ... [more ▼]

In this paper, a receding-horizon multi-step optimization is proposed to correct non viable transmission voltages and prevent long-term voltage instability. The proposed control scheme is based on real-time control, inspired by model predictive control, and steady state power-flow-based equations. In order to anticipate load behavior and avoid using dynamic equations in the control scheme, explicit formulations are used to model evolution of load with time. The simulation results of the proposed technique are presented on the Nordic32 test system. [less ▲]

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See detailA Framework for the Simultaneous Clearing of Multiple Markets within a Common Transmission System
Marinakis, Adamantios ULiege; Rosehart, William; Van Cutsem, Thierry ULiege

in Proceedings of the 2009 IEEE PES Power Tech conference (2009, July)

The possibility for market participants to place their bids in all the markets of an interconnection irrespective of where they are physically connected is investigated in this paper. A mechanism is ... [more ▼]

The possibility for market participants to place their bids in all the markets of an interconnection irrespective of where they are physically connected is investigated in this paper. A mechanism is proposed for managing the resulting congestion. It consists in iteratively sharing the transmission line capacities between the different market operators based each time on their present schedules. The algorithm is applied on a small test system. The results are assessed in terms of their property of being Nash equilibria and of their distance of the set of Pareto optimal operating points. [less ▲]

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See detailOptimal power flow computations with constraints limiting the number of control actions
Capitanescu, Florin ULiege; Rosehart, William; Wehenkel, Louis ULiege

in IEEE Power Tech conference (2009, July)

This paper focuses on optimal power flow (OPF) computations in which no more than a pre-specified number of controls are allowed to move. The benchmark formulation of this OPF problem constitutes a mixed ... [more ▼]

This paper focuses on optimal power flow (OPF) computations in which no more than a pre-specified number of controls are allowed to move. The benchmark formulation of this OPF problem constitutes a mixed integer nonlinear programming (MINLP) problem. To avoid the prohibitive computational time required by classical MINLP approaches to provide a (potentially sub-optimal) solution, we propose instead two alternative approaches. The first one consists in reformulating the MINLP problem as a mathematical program with equilibrium constraints (MPEC). The second approach includes in the classical OPF problem a nonlinear constraint which approximates the integral constraint limiting the number of control variables movement. Both approaches are solved by an interior point algorithm (IPA), slightly adapted to the particular characteristics of each approach. We provide numerical results with the proposed approaches on two test systems and for two practical problems: minimum cost to remove thermal congestion, and minimum cost of load curtailment to restore a feasible equilibrium point. [less ▲]

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