Multi-Factor Efficiency Analysis of Structural Elements Placing on Trunk Oil Pipeline for the Optimal Design Problem

Abstract

The article deals with the optimal design problem of the linear part of an oil trunk pipeline as the problem of choosing the best conditions for the structural elements placing. As an example, the optimal shut-off valves placing along the oil pipeline route is considered. The criterion of the minimum possible oil losses in case of accidents and scheduled repair operations of the pipeline is chosen as the criterion of the efficiency assessment of valve placing. An additional factor that characterizes the efficiency of design decisions is the choice of minimum possible categories of selected areas for the shut-off valves placing. Multifactorial analysis makes it possible to choose the optimal combination of shut-off valves placing on the pipeline route and provides the minimum value of the possible oil losses in case of breakdowns and scheduled repairs of the pipeline and minimum operating costs depending categories of the places of valves location is carried out. It was based on the data envelopment analysis method (DEA). The DEA analysis algorithm is based on the solution of a special mathematical programming problem and allows one ranking the elements in the sample of the coordinates of the shut-off valves placing on the main oil pipeline by the degree of efficiency. This paper presents a method for optimal coordinate selection of shut-off valves on a typical section of the main oil pipeline between oil pumping stations.