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The disaster prevention and monitoring system for the Guizhou section of the Hu-Kun High-Speed Railway, which utilizes Nanjing University Aoto PLC technology, has completed its static acceptance test.
Release date:
2015-03-27
The Shanghai-Kunming High-Speed Railway is an east-west railway artery stretching from Shanghai in the east to Kunming, Yunnan in the west. It is also one of China’s “Four Vertical and Four Horizontal” high-speed passenger transport corridors, and stands out as the longest east-west high-speed railway in China—boasting the widest geographic impact and traversing the most provinces. The project passes through six provincial capitals and a municipality directly under the central government, including Shanghai, Hangzhou, Nanchang, Changsha, Guiyang, and Kunming. With a designed speed of 350 km/h and a total length of 2,066 kilometers, the Shanghai-Kunming Railway, once completed, will become China’s longest east-west high-speed rail line.
The Shanghai-Kunming High-Speed Railway is an east-west railway artery stretching from Shanghai in the east to Kunming, Yunnan in the west. It is also one of China’s “Four Vertical and Four Horizontal” rapid passenger transport corridors, making it the longest high-speed railway line running east to west in China—boasting extensive reach and passing through the largest number of provinces. The project traverses six provincial capitals and a municipality directly under the central government, including Shanghai, Hangzhou, Nanchang, Changsha, Guiyang, and Kunming. Designed for a top speed of 350 km/h, the railway spans a total length of 2,066 kilometers. Once completed, the Shanghai-Kunming Railway will become China’s longest east-west high-speed rail corridor.
Chengdu Railway Bureau's latest plan reveals: Currently, China State Railway Group is conducting static acceptance tests on the Shanghai-Kunming High-Speed Railway (Guizhou-Guiyang to Changsha section). Joint commissioning and testing will take place in mid-to-late March. If all aspects proceed smoothly, the line is expected to begin commercial operations by the end of June this year.
It is understood that, as part of the joint commissioning and testing for the Guiyang-to-Changsha section of the Shanghai-Kunming High-Speed Railway, Chengdu Railway Bureau has meticulously studied and carefully optimized the joint commissioning plan in accordance with the deployment of China Railway Corporation. As a result, the duration of the joint commissioning and testing phase has been shortened from 105 days to 91 days. The specific work process will unfold as follows: After completing the static acceptance in early March, the bureau will dedicate three months to conducting comprehensive joint commissioning and testing activities. Key tasks during this phase include using Chengdu Railway Bureau's dedicated inspection vehicles for testing, performing step-by-step speed-up trials with the integrated test train (CRH380 model), gradually increasing the speed of the double-unit trainsets, validating signal system scenarios, and carrying out line-connection verification tests. Following this, a one-month trial operation period will be conducted. Provided all technical and operational criteria are met, the Shanghai-Kunming High-Speed Railway (Guiyang to Changsha section) is scheduled to officially begin commercial operations by the end of June this year.
It is reported that the joint commissioning and testing for the Guiyang-to-Changsha section were jointly carried out by Chengdu Railway Bureau and Guangzhou Railway Group. Chengdu Railway Bureau was responsible for the Guiyang-to-Huaihua segment, while Guangzhou Railway Group handled the Huaihua-to-Changsha section.
Our company's disaster prevention and monitoring system is currently being调试 (debugged) for the Guiyang to Huaihua section. Static acceptance testing has already been completed, and all monitoring data have been successfully transmitted to the Chengdu Monitoring Center.
The technical solution provided by Nanda Aotuo for this disaster prevention and monitoring system is as follows:
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 thorough 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—ensuring robust system reliability in every aspect.
The hot-standby redundant PLC system employs a fully redundant, hardware-based hot-standby configuration. Data is backed up between the hot-standby PLC systems 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 seamlessly and automatically switch over without interruption or disturbance. Additionally, manual switching can be performed either through monitoring software or by using the hardware buttons on the PLC system itself. Regardless of the switching method used, the system ensures smooth, disturbance-free operation throughout the entire transition process.
Hot-standby redundant PLC system architecture:
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 switchover 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.
Disaster Prevention Monitoring System Display
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