Wyniki wyszukiwania - BazTech

1

Optimization of Distribution System Reliability

Zemite L., Gerhards J., Gorobetz M., Levchenkov A.

Transactions on Environment and Electrical Engineering

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2016

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Vol. 1, No. 3

94--99

EN

Reliability analysis of distribution systems has been attracting increasing attention. A special concern pertains to the distribution networks on which most failures occurs. The optimization of distribution system of breakers and power switches is a possible strategy to improve reliability. The paper describes development procedure for modelling restoring after a fault and calculating associated reliability indices and customers’ outage costs. The developed model of the network and reliability and outage costs calculating algorithm is suitable for multi-criteria analysis of the network. Proposed reliability and outage costs calculation algorithm is based on Monte Carlo simulation and genetic algorithm.

2

Intelligent electronic embedded systems for the protection of railway transport from accidents

Potapovs A., Gorobetz M., Levchenkov A.

Archives of Transport System Telematics

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2011

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Vol. 4, iss. 3

24-30

EN

The paper considers an intelligent electronic embedded system for the protection of railway transport from accidents, its compatibility with the existing railway control system, principles of its components interoperation and control algorithms. The paper gives the definitions of the functions performed by the system considered and its mathematical description applied to the realization of the control algorithm. The process of the device prototype testing is described with the obtained results, advantages and further prospects

3

Interaction of real and embedded devices for intelligent control of city electric transport

Potapovs A., Gorobetz M., Levchenkov A.

Archives of Transport System Telematics

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2010

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Vol. 3, iss. 4

37-41

EN

The interaction of real and virtual devices is an important point in the design and development of control system. The central part of an embedded control system is a controller and it needs input devices and output sensors for realization of the control. The proposed approach allows using a real controller with its specific programming tools and languages for intelligent software development and virtual measurement and sensor devices realized in a computer environment. Different wireless compounds are necessary for intelligent embedded devices for transport system control. For this reason a wireless communication network is needed to ensure the data transmission between the controller and supervisory control and data acquisition system. The purpose of this paper is to propose an approach for interaction of real, embedded and virtual devices in electric transport control systems. The main tasks are: to analyze objects and functional dependencies of an electric transportation control system, to develop a control algorithm with the interaction of real and virtual devices, to ensure a wireless connection for the data transfer from the controller to the supervisory control and data acquisition system, to define the method of transmitted data processing. Computer and practical experiments, with real and embedded devices, and the results analysis will be described the paper.

4

Intellectual logistic system for passenger railway transportations in town

Gavrilovs P., Ribickis L., Balckars P., Levchenkov A.

Logistyka

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2009

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nr 3

CD-CD

EN

For a passenger most comfortably, when a transport provides delivery "from a door to the door". On small distances this problem successfully decides through the use of motor transport. But growth of amount of cars resulted in supersaturating of motorways a transport and especially streets of cities. Corks appear, the rate of movement goes down as a result, muddiness of environment is increased. Development of network infrastructure of claotype transport is offered on the followings directions: - integration of claotype transport in the single system with other types of transport; - development of the system of city reports on a type a "streetcar - bus - trolleybus - train", which foresees the use of all of types of transport in a city environment. Use of conception a "streetcar - bus - trolleybus - train" is given by possibility to decide many problems of intercity transportations of the capital. Passing from the line of one system to the area other is accomplished in strictly certain clamp points on connecting ways; - improvement of terms of transplantation between the kinds of transport with the concordance of time-tables, by creation of the single stations - lining-out knots, will allow to reduce loading on knots and shorten moving of passengers, both at times and is, in "corks", in the clock of lances; For the decision of this task an algorithm which determines minimum time on the way between tops in simple with non-negative scales is examined. To such many types of counts are taken. If a count is not simple, he can be done such, casting aside all of loops and, replacing every great number of parallel ribs the shortest rib (by a rib with the least weight) from this great number; every undirected edge is replaced the pair of the directed edges. If a count is not self-weighted, it is possible to consider that all of ribs have one weight. The result of calculation are saved in the destination file of Short.out with the following structure: tops of way, time on the way.

5

Control of heating processes in electro transport mechatronic system using sigmoidal feed forward neural network

Beinarts I., Levchenkov A., Balckars P.

Acta Mechanica et Automatica

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2008

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Vol. 2, no. 3

14-18

EN

In this article interest is concentrated on the climate parameters optimization in passengers’ interior of mechatronic systems (public electric transportation vehicles- train, tram or trolleybus). Idea is to use feed forward artificial neural network to create an algorithm and coordination mechanism for heating system parameters control to save electrical energy, and to increase the level of comfort for passengers. A special interest for investigations and further development is devoted to intelligent HVAC system allowing more flexible control of the system’s compressor, fan and heater operation, and, therefore, improvement of efficiency and energy saving. This paper provides the mathematical model and algorithm for optimal control of the climate control system.