PIPE NETWORK ANALYSIS, NETWORK MINIMUM COST FLOW ANALYSIS AND PIPE NETWORK CONTROL SYSTEM

摘要

PURPOSE: To provide a pipe network analysis which can obtain pipe network analysis results in practicable time with high accuracy even for large-scale (gas) pipe network and a pipeline control system therewith. ;CONSTITUTION: For a part which has no loops on a (gas) pipe network consisting of a loop structure 314 and a wooden structure 315 with no loops, namely, a wooden structure part, it is possible to determine (gas) flow rate concentratively from demand without taking into consideration (gas) pressure. Where the pressure in a joint of framework 302 which is the root of the wooden structure part 315 is determined, it is possible to determine the pressure in the respective joints of framework in order toward its terminal for the loop structure, and it is not necessary to solve simultaneous equations for a pipe network including the loop structure and the wooden structure. Paying attention to this, the wooden structure part of the pipe network is represented at the joint of framework which a root to reduce the pipe network. The data of the wooden structure part are stored in a storage part and deleted from an original pipe network. For the joint of framework is a root, a total of demand of all joints of framework which form the wooden structure part is allocated.;COPYRIGHT: (C)1996,JPO