Abstract
Application of mathematical methods of cost optimization for repair and maintenance of electrical equipment of agro-industrial enterprises is one of the important and promising directions for increasing the efficiency of electrical equipment operation management in agriculture. Mathematical programming systems use graphical and related attributive information in solving optimization problems. As graphical information in these systems we used maps, plans, diagrams, schedules of preventive measures from which the list of equipment for certain types of repair and maintenance, their labor intensity for individual objects, types of equipment and in total for the enterprise are established. Databases of electrical equipment are used as attributive information to describe electrical equipment of agro-industrial enterprises. Due to joint processing of graphical and attributive information in optimization systems, all stages of work with spatial data are more operative. Beginning from spatial data search, selection and analysis we can make a specific decision during the operation control of electrical equipment. This article considers maintenance and repair operation (MR) as a task of mathematical programming with cost optimization and deals with three approaches to the organization of this task. The expediency of using each method of solution is analyzed. The structural schemes, equations describing mathematical models, advantages and disadvantages of the presented models are given. We marked prospect of using linear programming programs for the decision of the given optimization problem by means of the inverse matrix method, i.e. the modified simplex method and computing algorithm with a standard sequence of operations.
Highlights
A modern agricultural enterprise can use both its own repair facilities to carry out maintenance and repair work on electrical equipment and can use specialist electrical repair organizations
It is not uncommon for enterprises to use the services of several contractors that may perform different or even the same types of work. From this situation the necessity of solving the problem of rational use of own electrical service and specialized repair companies arises. As it has to be solved annually, let us set the operation of maintenance and repair as a mathematical programming problem
Much of the information can be obtained from the schedule of maintenance of electrical equipment prepared by the electrical service of the agricultural enterprise on the eve of a new economic year
Summary
A modern agricultural enterprise can use both its own repair facilities to carry out maintenance and repair work on electrical equipment and can use specialist electrical repair organizations. It is not uncommon for enterprises to use the services of several contractors that may perform different or even the same types of work. From this situation the necessity of solving the problem of rational use of own electrical service and specialized repair companies arises. As it has to be solved annually, let us set the operation of maintenance and repair as a mathematical programming problem. First of all, when posing the problem, let us ask, whether there are alternatives for realization of the purpose of this operation – unconditional fulfillment of schedule of maintenance and repair of electric equipment. Many of them are obvious: the possibility of carrying out repairs only by own electrical service; the possibility of carrying out repairs only by contracting specialized organizations; the possibility of carrying out repairs both by own efforts and with the help of external (one or more) organizations [1, 2]
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