Mathematical Models and Methods for Analyzing Computer Control Networks of Railway Power Supply
- PDF / 186,093 Bytes
- 8 Pages / 594 x 792 pts Page_size
- 10 Downloads / 181 Views
MATHEMATICAL MODELS AND METHODS FOR ANALYZING COMPUTER CONTROL NETWORKS OF RAILWAY POWER SUPPLY O. I. Stasiuk1† and L. L. Goncharova1‡
UDC 681.325.5
Abstract. Methods for innovative transformation of railway power supply systems are analyzed. It is shown that modern intelligent power networks represent a new quality of a mutually integrated architecture of a distributed computer environment for the control of power supply and the topology of a traction power network, which are oriented towards the accumulation of new knowledge and optimization of energy resources. To synthesize mathematical models for investigating intelligent systems, a graph of a distributed computer environment is proposed, which adequately reflects the topology of a railway power grid. The paper also proposes a differential mathematical model of a distributed computer environment of intellectualization of procedures for all-mode control of power supply and methods for determining the probabilities of states of nodes, throughput, number of busy channels, and number of failures of requests for service. Keywords: differential mathematical model, method, graph, computer network, architecture, optimization, intelligent network, computer environment. INTRODUCTION An investigation of the evolution of innovative transformation of systems of power supply for traction of rail transport showed a broad spectrum of features connected first of all with the specificity of the procedure of power supply. In the process of power supply of railways, in contrast to a general-system power grid, a significant negative effect is manifested (as a result of topological features of power supply) in asymmetric and nonsinusoidal supply voltage and also in considerable uneven loads during freight and passenger transportation by trains. The above-mentioned and also other factors exert considerable influence on the economic efficiency of modes of power supply, reliability of functioning the system of railway power engineering, increase in the net cost of transportation, and organization of a reliable microprocessor network for the protection against the occurrence of emergency modes and short circuits and, together with the physical and moral ageing of the power grid and electrical power equipment, predetermine the occurrence and development of system accidents [1, 2]. The operating experience of electrical networks for traction showed that the organization of modern methods for the formation of optimization procedures of power supply, decrease in total system expenditures for rapid transit, and increase in the reliability level of transport systems and, accordingly, traffic safety can be provided with the help of creating new models and control methods oriented towards the use of distributed networks whose computer architecture adequately reflects the topology of the traction electric system of a railway [2–6]. The modern ideology of innovative transformation of power-supply systems of railways is confirmed by the systematic application of integrated distributed computer
Data Loading...
