Abstract
In the process of the smart grids formation a special attention is started to be paid to the issues of power engineering facilities safe functioning and reduction in their negative impact on personnel and environment. One of the important factors of such an impact is the generation of significant levels of strength of electromagnetic fields (EMF) by high-voltage overhead power transmission lines (OPL). In the context of the electric power industry digitalization, in order to improve the electromagnetic safety of service personnel, development of methods and means for digital modeling of EMF created by power lines of various designs is required, including traction networks of electrified railways. Computer models providing an adequate determination of the OPL EMF can be implemented on the basis of methods and tools designed for determining the parameters of the modes of electric energy systems in phase coordinates, developed at the Irkutsk State University for Railroads Communications. As an example of using these methods, the solution to the problem of constructing pictures of the distribution of EMF in the space surrounding the intersection of a flexible symmetrical conductor and a 25 kV traction network is given.
Highlights
The transition to digital technologies carried out in the electric power industry [1] nowadays requires the implementation of new approaches to computer models of electric energy systems (EES), which provide the complexity of modeling along with adequacy and accuracy
The complexity of the developed models consists in the possibility of solving on their basis a wide range of problems arising in the design and operation of EES: determination of normal and emergency modes, parametric identification of power lines and transformers, modeling of ice melting processes, assessment of electromagnetic safety conditions (EMS) [3,4,5,6,7,8,9]
Simulation was carried out using the Fazonord software package (SWP) [2] in order to obtain a picture of the distribution of electromagnetic fields (EMF) strengths at a standard height of 1.8 m for the intersection point of 25 kV traction network (TN) and 10 kV double-circuit symmetrical electrical pathway (SEP) with a length of 1.62 km, made with A-600 wires
Summary
The transition to digital technologies carried out in the electric power industry [1] nowadays requires the implementation of new approaches to computer models of electric energy systems (EES), which provide the complexity of modeling along with adequacy and accuracy.One of these approaches is being developed at Irkutsk State Transport University and is based on mathematical models of EES modes, implemented in phase coordinates [2].The complexity of the developed models consists in the possibility of solving on their basis a wide range of problems arising in the design and operation of EES: determination of normal and emergency modes, parametric identification of power lines and transformers, modeling of ice melting processes, assessment of electromagnetic safety conditions (EMS) [3,4,5,6,7,8,9].Below are the results of determining the EMS conditions at the inter-section of a flexible symmetrical electrical pathway (SEP) 10 kV [10] (fig. 1) and 25 kV traction network (TN) of electrified railroad (fig. 2). Are the results of determining the EMS conditions at the inter-section of a flexible symmetrical electrical pathway (SEP) 10 kV [10]
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