Data-Driven Security-Constrained OPF

Florian Thams, Spyros Chatzivasileiadis, Pierre Pinson, Spyros Chatzivasileiadis, Robert Eriksson

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    Abstract

    In this paper we unify electricity market operations with power system security considerations. Using data-driven techniques, we address both small signal stability and steady-state security, derive tractable decision rules in the form of line flow limits, and incorporate the resulting constraints in market clearing algorithms. Our goal is to minimize redispatching actions, and instead allow the market to determine the most cost-efficient dispatch while considering all security constraints. To maintain tractability of our approach we perform our security assessment offline, examining large datasets, both from measurements and simulations, in order to determine stable and unstable operating regions. With the help of decision trees, we transform this information to linear decision rules for line flow constraints. We propose conditional line transfer limits, which can accurately capture security considerations, while being less conservative than current approaches. Our approach can be scalable for large systems, accounts explicitly for power system security, and enables the electricity market to identify a cost-efficient dispatch avoiding redispatching actions. We demonstrate the performance of our method in a case study.
    Original languageEnglish
    Title of host publicationProceedings of 10th Bulk Power Systems Dynamics and Control Symposium
    Number of pages10
    Publication date2017
    Publication statusPublished - 2017
    Event10th Bulk Power Systems Dynamics and Control Symposium - Hotel Solverde Spa & Wellness Center , Espinho , Portugal
    Duration: 27 Aug 20171 Sept 2017
    Conference number: 10

    Conference

    Conference10th Bulk Power Systems Dynamics and Control Symposium
    Number10
    LocationHotel Solverde Spa & Wellness Center
    Country/TerritoryPortugal
    CityEspinho
    Period27/08/201701/09/2017

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