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Grid stabilization through VSC-HVDC using wide area measurements


A. Fuchs

IEEE Powertech, Power System Technology, Trondheim, Norway

Presentation of conference paper :

This work deals with the control of VSC-HVDC using wide area measurements. The goal is to enhance the transient and oscillatory stability of the power system for example during inter area oscillations or after faults. To this end, we present a predictive control framework that dynamically manipulates both the active and reactive powers injected by the VSC-HVDC links in a grid of generators, lines and loads. The approach naturally adresses two difficulties of the control problem: First, power injections by the VSC-HVDC are limited by constraints that depend on the state of the power system. Second, wide area measurements communicated to the controller are subject to a time varying delay. The simulations show a benchmark example of four generators linked by a VSC-HVDC. With the proposed approach, the VSC-HVDC can control this example system to an instable operating point while respecting the system constraints and compensating measurement delays.


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