Stochastic Optimization of PQ Powers at the Interface between Distribution and Transmission Grids

Jérôme Buire (1) , Frédéric Colas (1) , Jean-Yves Dieulot (2) , Xavier Guillaud (1)

1 L2EP - Laboratoire d’Électrotechnique et d’Électronique de Puissance - ULR 2697
2 CRIStAL - Centre de Recherche en Informatique, Signal et Automatique de Lille - UMR 9189

This paper addresses the volt-var control of distribution grids embedding many distributed generators (DGs). Specifically, it focuses on the compliance of powers to specified PQ diagrams at the high voltage/medium voltage (HV/MV) interface while the voltages remain well controlled. This is achieved using a two-stage optimization corresponding to two different classes of actuators. The tap position of capacitor banks is selected on a daily basis, given a stochastic model of the input powers prediction, which allows infrequent actuation and increases the device lifespan. In a second stage, a confidence level optimization problem allows to tune on an hourly basis the parameters of the DGs reactive power affine control laws. Results on a real-size grid show that the combined tuning of these actuators allows the ability to comply with European grid codes while the control effort remains reasonable.

Mots clés: General Computer Science; Distribution grid; HV/MV interface; Stochastic optimization; Reactive power control; Volt-var control

Domaines: Energie électrique

Jérôme Buire, Frédéric Colas, Jean-Yves Dieulot, Xavier Guillaud. Stochastic Optimization of PQ Powers at the Interface between Distribution and Transmission Grids. Energies, 2019, 12 (21), pp.4057. ⟨hal-02432455⟩