On the search for expanded grid control capabilities: Discrete control on emerging power technologies

Hector Pulgar-Painemal, Sebastian Martinez-Lizana

This letter proposes discrete changes in the power output of emerging power technologies (EPT) for controlling oscillations and frequency excursions. For the former, a new perspective is proposed that connects oscillations with the transient shift of the system equilibrium point. This is transformative as discrete control can be applied to multi-machine multi-modal systems for the first time, without any aggregation or reduction. For the latter, new insights are provided in regard to the nature of the discrete actions. Applications to a 2-bus, 9-bus and a 39-bus test systems are presented. Through the proposed controls, EPT can be enabled with controls that recognize their characteristics, and the grid can gain a large number of new effective controllers.

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