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The further penetration of renewable sources in the grid requires the implementation of energy storages in order to smooth out the variability and intermittent nature of renewables. This paper looks at the possibilities for a storage solution to meet an unprecedented situation of having no power input from renewables or an outage from grid sources for five consecutive days in the highest demand period...
In this article we compare probabilistic and deterministic approaches for estimating the security of information systems. Two parameters of security systems have been determined for compare — the ability to prevent unauthorized entry and deviation the requests with no permissions. Anylogic has been selected as a tool for modelling the information systems security. Two approaches have been used for...
Wireless Network has become the critical part of the communication infrastructure in our environment. Nowadays, the using of mobile computing devices such as laptops and Wi-Fi enabled phones in the workplace is increasing. The design of wireless networks for enterprise environments remains a challenging task due to the problem of topological design. In this paper, we discuss the computational aspects...
This paper presents the details of software development and implementation of a simulation model to be used for performance analysis of the control applied for management of a plug-in electric vehicles charging network. The model is designed to provide an evaluation of the tested control algorithms in terms of efficiency and stability operation. Apart from the control algorithm evaluation the model...
The paper discusses the topology optimisation of wireless networks using a brute force algorithm. In order to reduce the computational complexity of the algorithm the multi-thread application has been implemented to conduct the optimisation procedure. The efficiency of the algorithm was verified using an example task where topology of a wireless network has been optimised under various criteria.
The paper discusses the influence of the passenger flow on algorithms of lift control systems operating under dynamic strategy. The evaluation of parameters leading to change over of the algorithms has been conducted using modelling in AnyLogic software environment. The proposed model combines agent-based and discrete event approaches and was used to assess the efficiency operation of a ten floor...
The paper discusses utilisation of the brute force methods for the task of towers distribution in wireless communication systems. The proposed algorithm allows to find an optimal allocation of a tower between the settlements. A simple wireless communication has been used as an example to investigate the functionality of the algorithm's software.
Article presents a method of complex assessment of information system security based on a hybrid simulation in AnyLogic and describes the simulation model structure comprising a set of parameters to define the functionality.
This paper discusses a method that can be used for efficiency increasing of distributed computing by using dynamic parameters redefinition of the executed tasks. The method based on idea that we can variate the complexity of tasks by changing their parameters. Using hybrid modelling we determine optimization possibility for the procedure of application running as well as estimate the number of necessary...
This paper discusses options for using brute force methods for the distribution of complex tasks in hierarchical systems. The proposed algorithm is based on finding the optimal distribution of load between the executive elements at a predetermined structure. A simple hierarchic structure has been used as an example to investigate the functionality of the algorithm's software implementation.
This paper demonstrates the possibility of using the Lee algorithm for evaluating survivability of transport systems. The proposed method allows for determination of the critical sections of transport networks. A section of the Welsh transport infrastructure has been used as an example to investigate the functionality of the method and its software implementation.
The paper discusses the impact of electric vehicles on household electric energy consumption. The estimation of daily and annual energy demand of an electric vehicle from an average household is investigated and expressed as the probability of energy required to charge the vehicle battery. A variety of scenarios of electric vehicles' performance for present day and future were analysed using a Matlab...
The paper analyses a random pulse width modulated technique applicable for Z-source inverter. The proposed technique comprises the random pulse position PWM with a randomised frequently triangular carrier having characteristics of both space vector and random lead-lag modulations. This random pulse PWM is produced through the logical comparison of the pseudorandom binary sequence bits with the PWM...
This paper demonstrates a possibilities of using brute force methods for evaluating the effectiveness of hierarchical management systems. Proposed model of hierarchy provides finding the optimal distribution of load between the executive elements at a predetermined structure. A simple hierarchical structure has been used as an example to investigate the functionality of the model and its software...
The paper presents a new control strategy of management of transport companies operating in completive transport environment. It is aimed to optimise the headway of transport companies to provide the balance between costs and benefits of operation under competition. The model of transport system build using AnyLogic comprises agent-based and discrete-event techniques. The model combined two transport...
The paper discusses modelling of transport company management systems in a competitive environment. In order to analyse behaviour of the competing transport companies were modelled using an object-oriented structure. The criterion function applied for optimisation and implemented in the model was defined. The performance algorithm of a competitive environment was developed. To verify the proposed...
The paper discusses the impact of implementation of a variety of sensors into lift control system on its performance. It is shown that a hybrid model combining agent-based and discrete event methods can be used to assess operation of lift control systems. The proposed model has been simulated using AnyLogic systems to estimate impact of an additional sensor on performance of a ten floor lift system.
The paper discusses the vitality of smart and complex digital control crucial for system normal operation. It is suggested to apply the simulation methods for assessment of control systems' survivability. The control system for electric vehicle charging stations net-work has been used for the analysis in order to provide comparative assessment of control strategies.
The paper presents a new approach for detection of broken rotor bar fault in squirrel cage induction motors operating under varying load conditions. A mathematical model used in the presented method was developed using winding function approach to provide indication references for induction motor parameters under load variation. The model shows a strong relationship between broken rotor bar fault...
Battery of a plug-in electric vehicle can be charged from a power grid at different locations. In case of charging at home location it performs a significant impact on household energy consumption and needs to be coordinated and scheduled in order to reduce peaks of power load and cost of electricity. This paper discusses coordination of in-home charging aimed to improve load factor and reduce cost...
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