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Nanjing Aoto PLC ensures the safe operation of Yunnan's first high-speed train.
Release date:
2016-07-07
Yesterday at 10:40 a.m., Yunnan's first high-speed train departed from Kunming South Station. It is understood that, according to the unified arrangements and deployment of China Railway Corporation, the joint commissioning and testing work for the Yunnan section of the Shanghai-Kunming Passenger Dedicated Line officially kicked off on the 5th, led and organized by the Kunming Railway Bureau. This marks that the line is now entering the final countdown to its scheduled opening and operation by the end of the year.
Yesterday at 10:40 a.m., Yunnan's first high-speed train departed from Kunming South Station. It is understood that, according to the unified arrangements and deployment of China Railway Corporation, the joint commissioning and testing work for the Yunnan section of the Shanghai-Kunming Passenger Dedicated Line officially kicked off on the 5th, led and organized by the Kunming Railway Bureau. This marks the countdown to the line's scheduled opening and operation by the end of the year.
The Yunnan section of the Shanghai-Kunming High-Speed Railway began construction in September 2010. Once operational: the journey from Kunming to Guiyang will be reduced from the current 7 hours to about 2 hours; the trip from Kunming to Changsha will shorten from the present 19 hours to roughly 5 hours; travel from Kunming to Guangzhou will drop from 25 hours to around 7 hours; and the trips to Shanghai and Beijing will be cut from the current 40 hours to approximately 10 hours.
High-speed trains may run fast, but safety matters even more. It is reported that the joint commissioning and testing phase aims to achieve the design speed on the Yunnan section of the Shanghai-Kunming Passenger Dedicated Line. Key components of this process include tracks, roadbeds, bridges, tunnels, traction power supply systems, overhead contact networks, communications, signaling systems, passenger services, as well as advanced monitoring systems for natural disasters and foreign object intrusions, comprehensive grounding mechanisms, and sound barriers. During this period, test trains will be operated to conduct thorough debugging and testing of all equipment and facilities—such as tracks, circuits, communication systems, locomotives, and rolling stock—while addressing any identified issues comprehensively. This ensures safe and stable train operations once the line officially opens later this year.
The disaster prevention and monitoring system for the Yunnan section of the Shanghai-Kunming Railway utilizes the following technical solution provided by Nanda Aotuo:
Hot-standby Redundant PLC System:
The high safety requirements of high-speed railways place stringent demands on the disaster prevention and monitoring system, necessitating a highly reliable design. This solution features a targeted approach, with meticulous consideration given to redundancy. The redundant PLC system achieves full-system redundancy, encompassing power redundancy, CPU redundancy, IO module redundancy, communication module redundancy, Ethernet redundancy, and more—effectively ensuring the system's unwavering reliability.
The hot-standby redundant PLC system employs a fully redundant, hardware-based hot-standby configuration. Data backup between the hot-standby PLC systems is achieved via dedicated hot-standby redundancy cables. If any module fails to operate or is diagnosed with a fault, all controlled devices and operating modes will automatically switch over seamlessly and without interruption—while still allowing manual switching through monitoring software or the PLC system’s hardware buttons. Regardless of the switching method used, the system ensures smooth, disturbance-free transitions at all times.
How to implement a hot-standby redundant PLC system:
The hot-standby PLC systems use a high-speed channel to perform data backup between the master and slave systems, with communication rates reaching up to 100 Mbps.
Within a single scan cycle, all data exchange is completed, further enhancing processing speed and delivering real-time performance that surpasses similar products both domestically and internationally.
Fully independent intellectual property rights enable flexible hot-standby redundancy solutions, allowing users to configure and program the system according to their specific needs when participating in master-slave PLC system switching.
If the main PLC system fails, the switch to the backup PLC system can be completed after a single scan cycle—taking as little as 100 milliseconds, with even shorter switching times possible.
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