Abstract
In railway traction, the definition of “electromagnetic field” is functionally connected to the concept of the reactive power consumed by the electric rolling stock, and characterized by the running and standing electromagnetic waves in the space of the inter-substation zones from the site of the AC traction system. Such a definition is established and theoretically justified by the theory of electromagnetic fields. This article uses the methodology of this theory, in particular, a method for power balance estimation in electromagnetic fields based on Maxwell’s equations, as well as methods for the analysis of running and standing electromagnetic waves based on the theory of reflection, propagation and transmission of plane harmonic waves. The research considers the regularities of standing electromagnetic waves in the space of inter-substation zones of electric traction systems, which occur due to the incomplete reflection of incident waves from the contact wire and metal parts of the roof surface and the frontal part of the body of the electric rolling stock. The flow of electricity to the roof surface and the frontal part of the body of an electric locomotive is considered. The possibility of using existing methods to reduce wave reflections and thereby to effectively compensate for reactive power in the space of inter-substation zones is discussed.
Highlights
The fundamental role of reactive power is widely recognized in the electric power industry, and the ambiguity of the concept and formulae for determining reactive power is well known
In five years we will celebrate the 100th anniversary of the “reactive power” concept [1,2], which has brought about a long-lasting discussion that has continued to the present day; let us review some of them
The incident running electromagnetic waves fall at the surface of the contact wire, rails and body of the electric rolling stock, and form reverse waves, which play a double role in the consumption of active and reactive power
Summary
The fundamental role of reactive power is widely recognized in the electric power industry, and the ambiguity of the concept and formulae for determining reactive power is well known. S = E×H where E and H—the values of the vectors of the strengths of electric and magnetic fields at points within the space of inter-substation zones In this case, the incident (direct) running electromagnetic waves fall at the surface of the contact wire, rails and body of the electric rolling stock, and form reverse (reflected) waves, which play a double role in the consumption of active and reactive power. From the above analysis follows that the authors of the publications, recognizing the presence of active and inactive components of the energy of electromagnetic waves, do not consider the processes of wave reflection, and do not associate the physical interpretation of reactive power with the emergence and suppression of standing electromagnetic waves in the dielectric space of the electromagnetic field
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call