Re-phasing of traction transformers connection at traction substations to reduce the unbalance in the supply line

Авторы: 
Puzina Elena Yur'evna
Khudonogov I. A.
Дата поступления: 
02.11.2020
Библиографическое описание статьи: 

Puzina E. Yu., Khudonogov I. A. Perefazirovka podklyucheniya tyagovykh transformatorov na tyagovykh podstantsiyakh s tsel'yu snizheniya nesimmetrii v pitayushchei linii [Re-phasing of traction transformers connection at traction substations to reduce the unbalance in the supply line]. Sovremennye tekhnologii. Sistemnyi analiz. Modelirovanie [Modern Technologies. System Analysis. Modeling], 2020, No. 4 (68), pp. 102–114. – DOI: 10.26731/1813-9108.2020.4(68).102-114

Рубрика: 
Transport
Год: 
2020
Номер журнала (Том): 
№4(68)
УДК: 
621.331:625.1
DOI: 

10.26731/1813-9108.2020.4(68).102-114

Файл статьи: 
Иконка PDF 102-114.pdf
Страницы: 
102
114
Аннотация: 

Due to the planned significant increase in the volume of cargo transportation by 2025 along the Eastern polygon, there is an urgent problem of eliminating the limiting inter-substation zones that restrict the throughput capacity of railway sections. This problem is solved by strengthening the traction power supply system in various ways: by introducing compensating devices, increasing the overhead catenary section, installing additional sectioning points. In addition, the external power supply system is being strengthened stage-by-stage. One of the main goals of the implementation of these measures is to increase the voltage level in the overhead contact system to handle trains of increased mass with the necessary inter-train intervals. However, in the existing traction power supply system there are “hidden” reserves for increasing the voltage level in the overhead contact system, which will not require significant capital investments. These include checking the voltage balance in the power transmission line and, if necessary, the implementation of re-phasing the connection of traction transformers to the phases of the power transmission line. This work carries out the simulation of the systems of external and traction power supply of the З – Ж section of the Eastern polygon. The simulation results confirmed the presence of voltage unbalance in the power transmission line when handling heavy trains. To solve the identified problem, it was proposed to re-phase the connection of traction transformers. The results of the implementation of the proposed phasing option confirmed the effectiveness of the measure, since it led both to an increase in the voltage in the overhead contact system and to an improvement in the quality of electricity in the power transmission line.

Ключевые слова: 
traction power supply system
traction transformers
voltage unbalance
re-phasing
supply line
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