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arXiv · 1607.01575

On the steady-state behavior of a nonlinear power system model

Dominic Groß·Catalin Arghir·Florian Dörfler
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Abstract

In this article, we consider a dynamic model of a three-phase power system including nonlinear generator dynamics, transmission line dynamics, and static nonlinear loads. We define a synchronous steady-state behavior which corresponds to the desired nominal operating point of a power system and obtain necessary and sufficient conditions on the control inputs, load model, and transmission network, under which the power system admits this steady-state behavior. We arrive at a separation between the steady-state conditions of the transmission network and generators, which allows us to recover the steady-state of the entire power system solely from a prescribed operating point of the transmission network. Moreover, we constructively obtain necessary and sufficient steady-state conditions based on network balance equations typically encountered in power flow analysis. Our analysis results in several necessary conditions that any power system control strategy needs to satisfy.

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Dominic Groß, Catalin Arghir, Florian Dörfler. 2018-02-19. On the steady-state behavior of a nonlinear power system model. https://doi.org/10.1016/j.automatica.2017.12.057

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