Abstract
The relevance of the work is determined by the need to improve the electrical distribution grids of railways on the basis of digital technologies. The article presents advanced methods of transportation and distribution of electric power in smart power grids of railways based on multi-agent control. The analysis of the power supply system for stationary railroad consumers was performed and advanced ways of their development were defined. These methods should provide increased speed, adaptive determination of restrictions on using electric power equipment, management of mode parameters, sectioning and power flow modes in electrical distribution grids, restoration of power supply after emergency events. The method of adaptive control of transportation and distribution of electric energy in the power supply system of stationary railway consumers is developed based on the hierarchical structure of IEC 61850. This method takes into account the coordination of managing and local controllers in the data exchange environment, the control results and the variable area of responsibility of controllers and their division according to their functional purpose based on the multi-agent approach. The method of power flow control was developed to reduce power losses, increase the capacity of transport channels and ensure the restoration of the normal mode of the electric network by reconfiguring it and controlling active elements based on graph theory. The method takes into account the expected daily load curve, limits on the demand for capacity by active consumers and the possibility of a closed mode of electrical network operation through controlled cross-sections. The simulation results presented on the test circuit have showed the feasibility and efficiency of the proposed approaches.
Highlights
Russian Railways holding company has the largest power grid complex in Russia, which provides electricity transmission services to third-party consumers
Increasing the efficiency of the power supply system for stationary railroad consumers, including active elements, is possible due to the improvement of methods of economical transportation and distribution of electricity based on distributed intelligent automation systems and multi-agent management
Advanced methods of transportation and distribution of electric power in smart power grids of railways are presented based on multi-agent control
Summary
Russian Railways holding company has the largest power grid complex in Russia, which provides electricity transmission services to third-party consumers. − high degree of depreciation of capital stock; − low observability of the mode parameters; − low level of providence with technical means for regulating the mode parameters and elements of automated control systems; − insufficient capacity and overloading of cable and overhead lines and transformers; − high actual losses and low quality of electric power; − insufficient reliability of power supply to consumers. At the current stage of the development of Russia's electric power systems, an urgent task is the development of principles, methods for the operation of intelligent energy systems with active elements and the means of controlling them. Increasing the efficiency of the power supply system for stationary railroad consumers, including active elements, is possible due to the improvement of methods of economical transportation and distribution of electricity based on distributed intelligent automation systems and multi-agent management
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