DAMAGES ON ROLLING STOCK CAUSED BY SHORT CIRCUIT AND SEQUENCE OF THEIR REMOVING

Vasil Dimitrov; Martin Getov

Scientific paper ID 2276 : 2022/3

DAMAGES ON ROLLING STOCK CAUSED BY SHORT CIRCUIT AND SEQUENCE OF THEIR REMOVING

Vasil Dimitrov, Martin Getov

The Sofia underground is a main transport artery of public urban transport in the city of Sofia. In the period 2020-2021, the third metro diameter (line 3) of the subway was put into operation. It is served with a new high-tech rolling stock – Siemens Inspiro SF metro trains, the movement of which is fully automatically controlled. Maintaining a high level of operational reliability of this transport system s minimizing the probability of failures and breakdowns in electric trains.

The report presents the results of a study of the causes of a short circuit on the roof of the Siemens Inspiro SF metro train. For the purposes of the study, the features of short circuits in direct current circuits are briefly considered, paying attention to the specifics of their detection and disconnection. The construction, design and electrical connections of the pantograph that caused the short circuit were analyzed in detail. A technical solution is indicated to eliminate the prerequisites for the occurrence of identical accidents in the future: separation of a greater distance of the earthing cable for the pantograph drive from the power cable for its control, installing an insulating clamp with a smaller gauge and changing the place for its attachment. This technical solution has also been implemented in the other metro trains operated on line 3.

• Reload article • Open/Download as PDF

метровлакове Siemens Inspiro SF късо съединение релейна защита.Siemens Inspiro SF metro trains short circuit relay protection.Vasil Dimitrov Martin Getov

BIBLIOGRAPHY

[1] Akademiya za podvizhen sastav. Obuchenie za Sofiyski metropoliten, Obuchenie za mashinisti, Modul OP2, Siemens AG 2018, Sofiya, 2019
( [1] Академия за подвижен състав. Обучение за Софийски метрополитен, Обучение за машинисти, Модул OP2, Siemens AG 2018, София, 2019 )

[2] Dimitrova E., Analysis of Automatic Control Systems for Metro Trains, 11th Conference BulEF-2019, IEEE Xplore Digital Library, DOI: 10.1109/BulEF48056.2019.9030782, 2019

[3] Dimitrova E., S, Tomov, Components of the Communication System for Metro Trains Control, 12th Conference BulEF 2020, IEEE Xplore Digital Library, DOI: 10.1109/BulEF51036.2020.9326013, 2020

[4] Dimitrova E., S. Tomov, Algorithm for Positioning of Metro Trains under Communications-Based Train Control, 12th Conference BulEF 2020, IEEE Xplore Digital Library, DOI: 10.1109/BulEF51036.2020.9326061, 2020

[5] Kuffel E., W.S. Zaengl, J. Kuffel, High Voltage Engineering - Fundamentals, Second edition, ISBN 0 7506 3634, Butterworth-Heinemann, 2000

[6] I. Bozhichkova, Z. Bakalov, M. Zlatkov, Sravnitelno izsledvane na elektro-izolatsionnite pokazateli na polimerni materiali za izolirashti elementi za kontaktna mrezha 25 kV, 50Hz, „Mehanika, Transport, Komunikatsii“, ISSN 1312-3823 (print), tom 16, broy 3/2, 2018 g, statiya № 1724, str. X-64 – X-67
( [6] И. Божичкова, З. Бакалов, М. Златков, Сравнително изследване на електро-изолационните показатели на полимерни материали за изолиращи елементи за контактна мрежа 25 kV, 50Hz, „Механика, Транспорт, Комуникации“, ISSN 1312-3823 (print), том 16, брой 3/2, 2018 г, статия № 1724, стр. X-64 – X-67 )

[7] Rakovodstvo po elektricheski instalatsii – ch.1, AVV, 2014
( [7] Ръководство по електрически инсталации – ч.1, АВВ, 2014 )

[8] Tehnicheska dokumentatsiya na tyagovo-ponizitelni stantsii na sofiyskoto metro, „Metropoliten” EAD, Sofiya
( [8] Техническа документация на тягово-понизителни станции на софийското метро, „Метрополитен” ЕАД, София )