Study of Performance of Rzhfa-6500 Smoothing Reactors
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78 DOI: https://doi .org/10 .30932/1992‑3252‑2020‑18‑72‑83 Study of Performance of RZhFA-6500 Smoothing Reactors SCIENCE AND ENGINEERING Vladimir V. LOBYNTSEV Stanislav S. POLEV Kirill G. MOGILEVSKY Lobyntsev, Vladimir V., Russian University of Transport, Moscow, Russia. Polev, Stanislav S., Kurchatov Complex of Nuclear Transport Power Technologies of National Research Center Kurchatov Institute, Moscow, Russia. Mogilevsky, Kirill G., LLC Kinetic, Moscow, Russia*. ABSTRACT smoothing reactors of a new type were requested. The data DC traction power supply systems have become received from JSC Russian Railways contained information on widespread in several countries. Electricity consumption by the traffic volume, type of rolling stock, and weight of the traction power supply systems has pronounced seasonal and transported goods in accordance with the executed traffic daily peaks. The peak nature of consumption leads to schedule through section under consideration. The resulting additional heating of live parts since time constants of set of data served as the basis for development of a multivariate transient thermal and electrophysical processes differ by methodology for assessing energy efficiency of reactors of a several orders of magnitude, therefore, reducing ohmic new type, as well as their contribution to efficiency of train resistance of electrical equipment, other things being equal, operation over the considered comparative time interval. Since is an extremely important task. efficiency of power equipment also depends on the ambient Within the framework of solving the problem of increasing temperature, the average integral parameter of average daily energy efficiency of equipment of DC traction substations, temperature was introduced into the calculation methodology, smoothing reactor filter devices with an armoured radial- which, as it turned out, during processing initial data and cylindrical magnetic core with low ohmic resistance, named construction of characteristic graphical dependencies, has a RZhFA-6500, were developed and manufactured. comparative difference of less than one percent for the same In 2018, two blocks of RZhFA-6500 smoothing reactors monitored periods. were put into pilot operation at one of the most heavily loaded Accurate quantitative accounting of the data on sections of DC electrified railways, providing traffic of trains consumption of electrical energy provided for traction of weighing up to 9000 tons and traffic volume of about a trains, exchange of reactive energy with the supply network, hundred pairs of trains per day. volume of transportation allowed to obtain an objective To determine comparative indicators of energy efficiency, comparison of contribution of smoothing reactors of a new data on consumption of electric power for traction of trains for type to increasing efficiency of train operation and reducing the compared periods before and after introduction of consumption of electrical energy for traction of trains. Keywords: railway, energy efficiency indicators, traffic volume, smoothing reactors, filter device, active energy, reactive energy. *Information about the authors: Lobyntsev, Vladimir V. – Ph.D. (Eng), Associate Professor at the Department of Transport Electric Engineering of Russian University of Transport, Moscow, Russia, [email protected]. Polev, Stanislav S. – Leading Specialist of the Contract Follow-up Department of Kurchatov Complex of Nuclear Transport Power Technologies of National Research Center «Kurchatov Institute», Moscow, Russia, [email protected]. Mogilevsky, Kirill G. – Deputy General Director of LLC Kinetic, Moscow, Russia, [email protected]. Article received 27.04.2020, accepted 23.06.2020. For the original Russian text of the article please see p. 72. • WORLD OF TRANSPORT AND TRANSPORTATION, Vol. 18, Iss. 4, pp. 72–83 (2020) he topicality of problems of energy To conduct pilot operation of manufactured efficiency and energy saving is due to reactors, that received the abridged name T the growth in consumption of electrical RZhFA‑6500, JSC Transenergo JSC, the energy throughout the world . The gradual branch of JSC Russian Railways, identified two transfer of transport systems from hydrocarbon DC sections with heavy‑haul traffic of fuel to electricity requires both an increase in Sverdlovsk and West Siberian railways . its generation volumes, as well as raise the Letnaya traction substation of Sverdlovsk requirements for equipment of its transmission railway was selected as the site of introduction and distribution systems in terms of reducing of the first set of two smoothing reactors with power losses . an armoured radial‑ cylindrical magnetic core The development of new transport corridors [2] . This traction substation is located at a hill and increase in traffic volumes result in a climbing section [where trains should move significant increase in electricity consumption with the authorised speed], which determines by traction power supply systems, which have a relatively higher level of load on overhead line pronounced seasonal and daily peaks . The peak feeders . nature of consumption leads to additional Two RZhFA‑6500 units are connected in sectionheating [where of live trains parts sinceshould time move constants with of the series authorised and mounted speed] in ,the which second determines link of the a transient thermal and electrophysical processes filter device of West Siberian railway circuit relativdifferely by higher several orderslevel of magnitude, load on overhead therefore, linewithout feeders. reconfiguring its resonant circuits [1] . reducing ohmic resistance of electrical The level of psophometric voltage on the equipment,Two RZhFA other- 6500things unitsbeing areequal, connected is an buses in series of DC and switchgear mounted inof thethe secondtraction link of theextremely filter device important of taskWest . Siberian railway substationcircuit without in a wide reconfiguring range of traction its currentresonant Within the framework of solving the values did not exceed 15 V [3–7] . No increase circuitsproblem [1]. of increasing energy efficiency of in dangerous or interfering influences on equipment of DC traction substations, two sets devices of centralized blocking systems (CBS), of Thesmoothing level reactor of psophometr filter devicesic withvoltage low oncommunications the buses of andDC adjacent switchgear lines of of the ohmic resistance were developed and then longitudinal power supply of 6/10 kV was tractionmanufactured substation [1] . in a wide range of tractionrecorded, current significant values heating did not of theexceed structural 15 V Since DC traction power supply systems elements of RZhFA‑6500 units during [3−7].have No become increase widespread in dangerous not only inor Russia, interfering operation influences did not takeon devicesplace either of [8]centralized . blockingbut also systems in several (CBEuropeanS), communications countries, in Italy, andReactors adjacent of RZhFA‑6500lines of longitudinal type have proven power Lithuania, Latvia, Estonia, as well as in Poland themselves well, including during operation in supplywhere of 80 6/10 % of railwayskV was are recorded, DC electrified, significant this the heating summer of season, the structural when the elements ambient of reactor can have a high degree of unification . temperature in the shade rises to +31oС [9] . RZhFA-6500 units during operation did not take place either [8]. Tav.d.(2018), ℃ Tav.d.(2017), ℃ T, ℃℃ T, Average daily fluctuation in ambient temperature in the area of Letnaya TS for the same periods in 2017 and 2018, the difference in average values is less than 1 %. 79 Days Pic. 1. Average daily temperature fluctuation during most distinctive monitored periods (compiled by the authors). Pic. 1. Average daily temperature fluctuation during most distinctive monitored periods (compiled • WORLD OF TRANSPORT AND TRANSPORTATION, Vol. 18, Iss. 4, pp. 72–83 (2020) by the authors). Lobyntsev, Vladimir V., Polev, Stanislav S., Mogilevsky, Kirill G. Study of Performance of RZhFA-6500 Smoothing Reactors Reactors of RZhFA-6500 type have proven themselves well, including during operation in the summer season, when the ambient temperature in the shade rises to +31 С [9]. The graph of fluctuations in the average daily temperature for the period of experimental field operation is shown in Pic. 1. To assess energy efficiency of new reactors, the readings of active and reactive energy meters for the inputs of converter transformers of Letnaya TS for a six-month period (from 15.03.2018 to 15.09.2018) of the experimental field operation of period (from 15.03.2018 to 15.09.2018) of the experimental field operation of RZhFA-6500 reactors and for the comparable period of the previous year (from RZhFA-6500 reactors and for the comparable period of the previous year (from 15.03.2017 to 15.09.2017) were officially requested at Shartashskaya power supply 15.03.2017 to 15.09.2017) were officially requested at Shartashskaya power supply distance unit (EChE-232). Based on the results of processing the obtained data, distance unit (EChE-232). Based on the results of processing the obtained data, graphs of daily average values of active energy (Pic. 2), consumed for traction of graphs of daily average values of active energy (Pic. 2), consumed for traction of trains, and of reactive energy which characterised energy exchange with the supply trains, and of reactive energy which characterised energy exchange with the supply network (Pic. 3) were constructed.