A tool for stability and power sharing analysis of a generalized class of droop controllers for high-voltage direct-current transmission systems

D. Zonetti (1) , Roméo Ortega (1) , J. Schiffer (2)

1 L2S - Laboratoire des signaux et systèmes
2 University of Leeds

The problem of primary control of high-voltage direct-current transmission systems is addressed in this paper, which contains four main contributions. First, a new nonlinear, more realistic model for the system suitable for primary control design, which takes into account nonlinearities introduced by conventional inner controllers, is proposed. Second, necessary conditions-dependent on some free controller tuning parameters-for the existence of equilibria is determined. Third, additional (necessary) conditions are formulated for these equilibria to satisfy the power-sharing constraints. Fourth, establish conditions for the stability of a given equilibrium point. The usefulness of the theoretical results is illustrated via numerical calculations on a four-terminal example.

Domaines: Sciences de l'ingénieur [physics]; Informatique [cs]

D. Zonetti, Roméo Ortega, J. Schiffer. A tool for stability and power sharing analysis of a generalized class of droop controllers for high-voltage direct-current transmission systems. IEEE Transactions on Control of Network Systems, 2018, 5 (3), pp.1110-1119. ⟨10.1109/tcns.2017.2687080⟩. ⟨hal-01895479⟩