At 16:00 on September 2, 2024, the newly built Vrbas traction substation in the Nuosu section of the Serbia Serbia Serbia railway closed its 27.5kV feeder line, and the contact network successfully transmitted power in one go, marking the realization of full line contact network power transmission in the Nuosu section of the Serbia Serbia Serbia railway and laying a solid foundation for high-quality operation of the Nuosu section of the Serbia Serbia Hungary railway within the year.

The newly built Vrbas traction substation in the Nuosu section of the Serbia Serbia Hungary Railway has closed its 27.5kV feeder line, successfully transmitting power to the overhead contact system in one go. This marks the achievement of full line overhead contact system power transmission in the Nuosu section of the Serbia Hungary Railway, laying a solid foundation for the high-quality operation of the Nuosu section of the Serbia Hungary Railway this year.

The relevant person in charge of China Railway International Co., Ltd. introduced that contact line power transmission refers to the conversion of high voltage from local power grids along high-speed railways into 27.5 kV single-phase AC power through railway traction substations, and then transmitted to the contact line above the high-speed railway line to provide kinetic energy for the operation of high-speed trains. The power transmission of overhead contact system is a major test for electrified railway overhead contact system, and it is also the last important process before joint debugging and testing.

The total length of the Nuosu section of the Hungary Serbia Railway is 108.1 kilometers, with a total of 360.1 kilometers of overhead contact wire installed. There are 3 traction substations, 3 section posts, and 4 switching posts. The traction power supply system of the Nuosu section of the Hungary Serbia Railway mainly consists of contact wire suspension system, traction substation system, traction power supply control system, track system, and main low-voltage power supply system for production and daily life. Among them, the components of the contact wire suspension system, traction substation equipment, remote control RTU equipment, etc. are all manufactured in China. This is the first time that China's high-speed rail contact wire power supply system has landed in Europe, and it is also a successful example of friendly integration between Chinese standards and European countries. Keywords: overseas engineering, international engineering construction, foreign engineering construction news.

In order to ensure the successful power transmission of the contact network of the Nuosu section of the Hungary Serbia Railway, China Railway International Co., Ltd., a subsidiary of China National Railway Group Co., Ltd., took the lead in organizing a consortium construction unit to prepare a detailed power transmission start-up plan for the electric traction power supply project, clarifying the scope, steps, safety technical measures, and emergency plans of the power transmission. The power supply facilities along the line were strictly debugged according to the standardized process of the plan to ensure that the traction power supply facilities along the entire line met the power transmission requirements on schedule. After closing, according to on-site technical personnel testing, all technical parameters meet the design requirements and construction standards, achieving successful one-time power transmission of the contact network. (This article is from the official website of Jian Dao: www.seetao.com. Reproduction without permission is prohibited, otherwise it will be prosecuted. Please indicate Jian Dao website+original link when reprinting.) Jian Dao website mechanical column editor/Zhou Yingwen