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Affine reserve policies and robust unit commitment for integrating renewables into power systems

Author(s):

Christian Hohl
Conference/Journal:

Master Thesis, HS12 (10195)
Abstract:

This work presents a method for solving large- scale robust power system scheduling problems, incorporating both unit commitment and affine policies for redispatch in the face of uncertain loads or renewable energy infeeds. The unit commitment decisions and redispatch policies are determined in a coupled manner, in contrast to two-stage approaches more commonly encountered in existing literature. However, this problem quickly becomes intractable when posed as a centralized mixed-integer program. To overcome this, we propose a distributed optimization technique based on the alternating direction method of multipliers that deals efficiently with the integer decision variables and has attractive scaling properties with respect to the problem size. We verify that this is the case by comparing the centralized solution with the distributed solution for randomly-generated problems. We also show that in problem instances where a sub-optimality measure is available, our solutions are reasonably efficient.

Year:

2013
Type of Publication:

(12)Diploma/Master Thesis
Supervisor:

J. Warrington

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% Autogenerated BibTeX entry
@PhdThesis { Xxx:2013:IFA_4411
}
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