In this paper an estimation scheme for a power grid based on distributed observers is presented. Assuming that the only measurements available are the generator phase angles, our approach allows us to consider an observer for each bus of the power grid, exploiting on only knowledge of local information about the power system. In particular, we design a super-twisting-like sliding mode observer for each generator bus and a so-called “algebraic observer” for each load bus, based on a distributed iterative algorithm. The proposed scheme is able to deal with power grid changes that may involve the insertion of new generators or new power transmission lines affecting the grid topology. Numerical examples and simulations confirm the validity of our approach.
Distributed observers for state estimation in power grids
RINALDI, GIANMARIO;FERRARA, ANTONELLA
2017-01-01
Abstract
In this paper an estimation scheme for a power grid based on distributed observers is presented. Assuming that the only measurements available are the generator phase angles, our approach allows us to consider an observer for each bus of the power grid, exploiting on only knowledge of local information about the power system. In particular, we design a super-twisting-like sliding mode observer for each generator bus and a so-called “algebraic observer” for each load bus, based on a distributed iterative algorithm. The proposed scheme is able to deal with power grid changes that may involve the insertion of new generators or new power transmission lines affecting the grid topology. Numerical examples and simulations confirm the validity of our approach.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
