International Business Machines Corporation

Utopus Insights, Inc.

Xu Sun

Jun Li Wang

Dung Tien Phan

Chitra Dorai

Soumyadip Ghosh

Roger Douglas Lederman

A method for determining power output levels of a plurality of nodes in an electric power system includes receiving, at a first node of the plurality of nodes, voltage information and multipliers of all neighboring nodes of the first node within the electric power system, determining, by the first node, a local power generation and a local voltage using the voltage information and the multipliers of the neighboring nodes and distributing the local power generation and the local voltage to the neighboring nodes, determining, by the first node, an estimated voltage of each of the neighboring nodes and distributing the estimated voltage to each of the neighboring nodes, and updating, by the first node, a local multiplier using the voltage information received from the neighboring nodes and the estimated voltage of each of the neighboring nodes determined by the node.

Distributed control of electric power grids

A method for projecting performance of a target asset compared to a benchmark, the method comprising receiving one or more target matrices corresponding to a target portfolio and one or more benchmark matrices corresponding to a benchmark portfolio, wherein the target matrices and benchmark matrices comprise elements corresponding to variables that influence portfolio performance trajectory, computing a target performance trajectory based on the one or more target matrices and a benchmark performance trajectory based on the benchmark matrices, identifying actions to bring the target performance trajectory above the benchmark performance trajectory; and communicating the identified actions.

Performance projection

A method for determining a generation schedule with contingency constraints for controlling power output levels for a plurality of generators in an electric power system including determining a measure of a sparse, corrective model (C), security-constrained optimal power flow (SCOPF), which reduces a number of post-contingency rescheduling operations for each of a plurality of contingencies, and adjusting a power output level of at least one of the plurality of generators according to the measure of the sparse C-SCOPF upon detecting a contingency in the electric power system.

Reducing corrective actions in security-constrained optimal power flow via sparsity regularization

Aspects of the present invention provide a tool for hash-based indexing. In an embodiment, a ranked dataset having a plurality of data items is obtained. Every data item in the ranked dataset has a ranking with respect to every other data item in the ranked dataset. A ranking triplet matrix is created based on the ranked dataset. The ranking triplet matrix has a set of ranking triplets, each of which indicates the relative ranking for a pair of the data items in the ranked dataset. This ranking triplet can be merged with a hash table obtained using a standard hash function and the data items can be indexed based on the results.

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Atlanta, GA, United States of America

Xu Sun