An internal model approach to (optimal) frequency regulation in power grids with time-varying voltages

• Sebastian Trip ^[1] ; Mathias Bürger ^[2] ; Claudio De Persis ^[1]
  1. [1] University of Groninge, The Netherlands
  2. [2] Cognitive Systems, Corporate Research;Germany
• Localización: Automatica: A journal of IFAC the International Federation of Automatic Control, ISSN 0005-1098, Vol. 64, 2016, págs. 240-253
• Idioma: inglés
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• Resumen

  • This paper studies the problem of frequency regulation in power grids under unknown and possible time-varying load changes, while minimizing the generation costs. We formulate this problem as an output agreement problem for distribution networks and address it using incremental passivity and distributed internal-model-based controllers. Incremental passivity enables a systematic approach to study convergence to the steady state with zero frequency deviation and to design the controller in the presence of time-varying voltages, whereas the internal-model principle is applied to tackle the uncertain nature of the loads.