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Determination of load shedding for power-flow solvability using outage-continuation power flow (OCPF)

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3 Author(s)
Song, H. ; Sch. of Electron. & Inf. Eng., Kunsan Nat. Univ., Kunsan Jeonbuk, South Korea ; Baik, S.-D. ; Lee, B.

The paper proposes a methodology that determines control strategies of load shedding for restoring power-flow solvability in unsolvable cases using a new tool of outage-continuation power flow (OCPF). A specified outage from a set of multiple contingencies is modelled with a homotopy function, including a parameter representing the outage. The new tool traces the path of solutions satisfying the power-flow equations with respect to variations of the parameter. At the nose point, it performs a sensitivity analysis with a normal vector to identify the most effective control variables. With the sensitivity information, location of load shedding is determined; then, an adequate amount of control is decided by applying a searching method. In numerical simulation, an illustrative example of the proposed framework is shown applied to the New England 39-bus system.

Published in:

Generation, Transmission and Distribution, IEE Proceedings-  (Volume:153 ,  Issue: 3 )

Date of Publication:

11 May 2006

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