International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 11 Issue: 09 | Sep 2024
p-ISSN: 2395-0072
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Adaption of IoT (Internet of Things) over Indian Railways Manas Garg MSIT, GGSIPU Delhi ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract - With the growing influence of the Internet of
A specific and critical use case of SCADA in Indian Railways is its implementation in the Western Dedicated Freight Corridor (WDFC), a 1,500-kilometer-long electrified freight corridor designed for double-stack container movement. The WDFC, partly financed by the Japan International Cooperation Agency (JICA) at an estimated cost of 470 billion INR, is the world’s first electrified freight corridor capable of running double-stack containers with a height of 7.1 meters. To accommodate this height, the traction contact lines must be installed at a height of 7.54 meters, which introduces significant challenges in the design and operation of the electrification system. The WDFC has adopted a 2x25kV AC traction system, which requires an additional feeder wire and aerial earth wire, further complicating the overhead electrification (OHE) infrastructure.
Things (IoT) across various sectors, Indian Railways has embraced this technology to enhance the efficiency of its operations. The integration of SCADA over WDFC demonstrates the application of IoT in critical infrastructure, allowing real-time monitoring, control, and automation of the electrified freight network. The key features of WDFC’s SCADA, including its use of TCP/IP communication protocols based on IEC 60870-5-104, the deployment of Remote Terminal Units (RTUs), and the advantages of real-time data acquisition and fault detection, are discussed. Key Words: IoT, SCADA, RTU, WDFC, communication, bus, fault location. Railways
1.INTRODUCTION
The SCADA system implemented on the WDFC plays a critical role in managing these challenges by providing centralized control of the traction power network. The system monitors and supervises the network's various components, ensuring operational efficiency and minimizing downtime. It allows operators at the Operations Control Center (OCC), located in Ahmedabad, to control multiple Remote Terminal Units (RTUs) deployed across the corridor. These RTUs interface with various field devices such as circuit breakers, transformers, and auxiliary equipment. Using both digital and analog inputs, the RTUs gather data from Intelligent Electronic Devices (IEDs) and transfer it to the OCC for real-time monitoring and control. This data is then displayed through a Graphical User Interface (GUI), enabling operators to make informed decisions regarding network performance.
The rapid adoption of the Internet of Things (IoT) has brought transformative changes to various industries, including transportation, where interconnected devices and systems facilitate real-time monitoring and control. IoT has become an enabler of smart infrastructure, revolutionizing its operations by integrating sensors, data analytics, and communication networks to improve efficiency, safety, and reliability. IoT devices deployed across vast railway networks collect and transmit data, allowing for predictive maintenance, enhanced fault detection, and automated decision-making. These advancements are critical for managing the complexities of modern rail networks, including electrification, signaling, and traffic control. One of the most prominent examples of IoT in Indian Railways is the integration of Supervisory Control and Data Acquisition (SCADA) systems for monitoring and controlling railway traction power networks. SCADA systems in IR, previously based on electromechanical designs, have evolved into sophisticated digital platforms using IoT and communication technologies. These systems enable realtime supervision of equipment across wide geographical areas, allowing for continuous control of vital components such as substations, transformers, and circuit breakers. The transition to PC-based SCADA systems, which work on standard protocols such as SPORT (Standard Protocol for Railway Traction) and TCP/IP, ensures seamless data exchange between devices and the control center. This evolution has enhanced the reliability and safety of railway operations, while also enabling remote access and automation.
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The SCADA system also enables advanced functionalities such as remote configuration of RTUs, automated fault detection, and dynamic network control. Using IEC 60870-5104 communication protocol over TCP/IP, the system ensures seamless, real-time data transmission between the OCC and the field equipment. The integration of IoT within SCADA systems thus empowers WDFC’s electrification network to operate more efficiently while overcoming the logistical and technical hurdles associated with its unique requirements.
2. Brief Description of 2x25kV AC System The 2x25 kV, 50 Hz system is used for high-performance traffic in worldwide railways. This type of feeding is characterized by additional auto-transformers and a return line at a potential of 25 kV. In this system, the line is supplied
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