Patent ID: 7957844
Filing Date: 2011-06-07
Classification: H02H,H02J

Abstract:
1. A method for stabilization of a power balance in an electric power system comprising a plurality of nodes, the method comprising: sensing an instantaneous value of a mains frequency of the electric power system; determining a frequency deviation of the instantaneous value from a reference frequency; disconnecting in a node a selected part of the electric power system connected to the node in dependence on the frequency deviation, wherein each node of the system is associated with part of the electric power system, and wherein each part of the electric power system is a power producer or a load; sensing a voltage amplitude value in the node; calculating a magnitude of a deviation of the voltage amplitude value from a reference amplitude; calculating a time lag in dependence on a measure of the magnitude of the deviation; disconnecting the selected part of the electric power system from the node at a point in time in dependence on the time lag; and repeating the method for other nodes of the electric power system and disconnecting selected parts of the electric power system until the power balance in the electric power system is stabilized.