| 摘要 |
PURPOSE:To make it possible to quickly perform a simulation for a power system by efficiently paralleling a portion for solving simultaneous linear equations. CONSTITUTION:With respect to the portion for solving simultaneous linear equations among the simulation calculations for a power system, part of the advance and regression substitution calculations is replaced with the calculations with inverse matrix factors when performing the advance and regression substitution. At first, bus lines are separated to several independent groups in step 51, and advance substitution calculations are made in parallel. Then in step 52, the products of inverse matrix factors and vectors are calculated by parallel processing for each line for the remaining buses. In step 53, buses are separated to groups likewise in step 51 and parallel regression substitution calculations are performed. By paying attention to a resolution passgraph during LU resolution, paralleled by replacing with calculations using inverse matrix factors for the trunk portion of the graph. By doing this, simulation for power system can be performed at a high speed. |
