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Title: Determination of effectiveness of transient stability controls using reduced number of trajectory sensitivity computations
Keywords: Compensation
Flexible Ac Transmission Systems
Power Generation Scheduling
Power System Transient Stability
Power Transmission Control
Sensitivity Analysis
Issue Date: 2004
Publisher: IEEE
Citation: IEEE Transactions on Power Systems 19(1), 473-82
Abstract: This paper presents a new approach for determining the effectiveness of preventive generation rescheduling and shunt/series compensation in improving transient stability using trajectory sensitivity (TS) method. It is shown that the effectiveness of changes in parameter values can be judged by evaluating the TS of certain variables with respect to clearing time. Therefore, the need to evaluate a host of sensitivities with respect to many parameters is obviated. This heuristic is motivated by the fact that for simple models and small changes, controllability of trajectories using certain parameters can be inferred from observability in certain output signals. An example of such a parameter and signal pair is shunt susceptance at a bus and the square of voltage at that bus, respectively. Case studies are carried out on a 10-machine 39-bus system with detailed models and 17-machine system to validate this method.
ISSN: 0885-8950
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