Fault frequent sensor again called Beijing-Shanghai high-speed rail

The opening of the Beijing-Shanghai high-speed rail attracted a lot of attention. People enjoy curious traffic while being curious about its safety performance. However, this newborn "baby" looks like it did not grow well after "birth". Three failures occurred within four days. The train failure occurred yesterday due to a sensor error.

At about 11 noon on July 13th, a passenger microblogging broke the news that the Beijing-Shanghai high-speed rail G114 train failed and stopped at Zhenjiang. The railway department rushed to Zhenjiang from Nanjing to pick up passengers on the G114. Subsequently, the Beijing Railway Bureau confirmed the news on Weibo: On July 13, the Beijing-Shanghai high-speed rail G114 train went to Changzhou North Station and failed to operate normally. A reporter from the International Finance News learned yesterday from the passenger transport office of the Beijing Railway Bureau that the failure did cause some impact, but the impact was smaller than the previous two failures.

The reporter noted that the faults on July 10 and 12 were all in the power supply system, and yesterday it was a problem with the vehicle itself. The CRH380 series of high-speed EMUs operated by the Beijing-Shanghai high-speed railway has been known in the industry as a domestic new-generation high-speed train with independent intellectual property rights.

Our reporter learned from various sources yesterday that he learned that the faulty vehicle on the 13th was manufactured by CNR. In response to a question raised by a reporter from the International Finance News, the head of CNR pointed out that the faulty train was due to the automatic protection of the electrical system, which limited the speed to 160 km/h. This is a fault-oriented security. Because there is a fault detected. The person in charge told the reporter that the current fault train has arrived in Nanjing and is being inspected by technical personnel.

The reporter called CNR again at 22:00 last night. The company’s technical expert responded that: “Before it was only determined that there was a failure in the safety loop, it has been confirmed that a sensor has a problem and has been replaced. The problem of the car has been dealt with, and the next step will continue to be analyzed from the original level." But for the sensor manufacturer, the technical expert said yesterday that it was not disclosed.

According to its introduction, faults caused by sensors had previously appeared on other lines, and there is no guarantee that similar situations will not occur on the Beijing-Shanghai high-speed railway line in the future. "Fault-oriented safety means that there is a small problem, but also speed limits, more stringent requirements, design philosophy is that when there are problems, we must allow the car to slow down and stop in time."

The technical expert also pointed out yesterday that any set of equipment systems will have relatively more failures during the initial operations. As the speed of railways has increased over the years, it can be seen that the failure rate of the Beijing-Shanghai high-speed rail line is still very low from the perspective of vehicles alone. The expert also pointed out that "Every new car has undergone trial operation of about 5,000 kilometers, but everyone is too concerned about the Beijing-Shanghai high-speed rail."

According to report, the trains operated by the Beijing-Shanghai high-speed rail line are provided by China South Locomotive and China North Locomotive respectively. According to the data from the middle of June, CNR has completed the manufacturing of 42 high-speed trains from Beijing and Shanghai, of which 20 are delivered to the Shanghai Railway Bureau, 12 to the Jinan Railway Bureau, and 10 to the Beijing Railway Bureau. The series of trains produced by the company has been running more than 980,000 kilometers on the Shanghai-Hangzhou line.

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