Förfarande och anordning för kontrollerad återinkoppling av effektbrytare

摘要

A method for controlled reclosing of branch elements in an electric power system that has been subjected to a disturbance and that includes at least one branch element and at least one circuit breaker connected thereto. The angular difference between voltage vectors on both sides of the circuit breaker or at two end points of the branch element is detected and compared with a comparison value. In dependence on a magnitude of a deviation of the angular difference from the comparison value, the reclosing is either completed or blocked. The comparison value is updated automatically and regularly in such a way that an adaptive value is obtained. A system includes an element arranged to update the comparison value automatically and regularly in such a way that an adaptive value is obtained.