Linear programming (LP) techniques and interior point methods (IPMs) have been used extensively for optimal power flow's solution. Both have their merits as well as limitations. There are situations in which a technique which combines the merits of both, is desirable. This study attempts to develop this technique using the well-known compact model, with hitherto unused non-linear approximation, in terms of incremental variables. Sequential applications of this non-linear incremental model, which is solved by using any of the IPM variants, leads to solution of the original problem. It avoids the vexed step-size restrictions, so common in sequential LP techniques. This model also allows for speed-accuracy trade-off. Results for few IEEE test systems and a fictitious 1000 bus system, have been obtained to explore the potential of this technique.

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Efficient sequential non-linear optimal power flow approach using incremental variables

References

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