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Probabilistic load flow for uncertainty based grid operation

By Christian Rehtanz, Johannes Schwippe and Olav Krause

Abstract

Traditional algorithms used in grid operation and planning only evaluate one deterministic state. Uncertainties introduced by the increasing utilization of renewable energy sources have to be dealt with when determining the operational state of a grid. From this perspective the probability of certain operational states and of possible bottlenecks is important information to support the grid operator or planner in their daily work. From this special need the field of application for Probabilistic Load Flow methods evolved. Uncertain influences like power plant outages, deviations from the forecasted injected wind power and load have to be considered by their corresponding probability. With the help of probability density functions an integrated consideration of the partly stochastic behaviour of power plants und loads is possible

Publisher: IEEE
Year: 2009
OAI identifier: oai:espace.library.uq.edu.au:UQ:228392

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