A high-speed earthing switch (HSES) of a gas-insulated switchgear (GIS) performs a secondary role in protecting the power system in the event of an accident. After being interrupted by a circuit breaker (CB), the short-circuit current remaining in the network should be earthed by the HSES. However, as the contacts of the HSES may have been damaged by a pre-arc during the closing operation, the ...

The cutting stock problem with binary patterns (0-1 CSP) is a variant of CSP that usually appears as a relaxation of 2D and 3D packing problems. We present an exact method, based on an arc-flow formulation with side constraints, for solving 0-1 CSP by simply representing all the patterns in a very compact graph. Gilmore-Gomory’s column generation approach is usually used to compute strong lower...

Purpose of this paper is to approach and solve Sudoku as a Constraint Satisfaction Problem and to compare various heuristics and their effects on solving the problem. Heuristics compared include Backtracking with Forward Checking and Minimum Remaining Value, Arc Consistency, and Arc Consistency Pre-Processing.

Abstract In this paper, to accurately compensate the arc suppression coil, structure of transformer is improved. Here, a fixed inductive element connected in series with short-circuit winding, which combines leakage inductance original form new short circuit impedance. The improved reduces manufacturing cost and difficulty controllable inductor, requirements for winding reactor, makes easier.

The cutting stock problem with binary patterns (0-1 CSP) is a variant of CSP that usually appears as a relaxation of 2D and 3D packing problems. We present an exact method, based on an arc-flow formulation with side constraints, for solving 0-1 CSP by simply representing all the patterns in a very compact graph. Gilmore-Gomory’s column generation approach is usually used to compute strong lower...