"No matter what happens, as long as you lose contact with the monitoring communication system for 7 seconds, the train will brake. If the train speed exceeds 305 kilometers per hour, the system will call the police. Brake when it exceeds 365,438+00 kilometers. In bends, ramps, turnouts, tunnels and bad weather, the system always maintains a limited speed. "
Although the final investigation result of the "7.23 Ningbo-Wenzhou Special Accident" has not been announced, the problems in the signal system and dispatching system are the main reasons. As far as I know, China Railway Communication Signal Group Corporation (hereinafter referred to as "China Signal") provides overall signal integration for this railway. Casco Signal Co., Ltd. and Beijing Railway Communication Signal Research and Design Institute Co., Ltd. (hereinafter referred to as "Signal Institute") under the company are also important equipment providers. Hollysys is the ATP supplier of the accident train.
The signal system of Yong-Wen line is mainly integrated by Hao Tong, China, and its engineering branch is responsible for the specific construction.
Among them, China Railway Electrification Bureau is responsible for "Electric Traction Specialty" and Hao Tong Group is responsible for "Communication Signal Specialty". The equipment and software of CTCS2 system and other dispatching monitoring systems are purchased by two companies. However, before purchasing, it should be reported to Shanghai Railway Bureau for approval and filed with the Ministry of Railways. Therefore, Shanghai Bureau officials still have influence on procurement. The above two enterprises are both enterprises with a long history. China Railway Electrification Bureau, formerly known as the Electrified Railway Engineering Bureau of the Ministry of Railways, is now the "national team" in the field of railway electrification. It has developed from the first electrified railway in China to the largest electrification engineering unit in China, and is inextricably linked with the Ministry of Railways. It can be said that the electrification of high-speed rail in China is basically done by the Electric Power Bureau. China Hao Tong Group is a large-scale central enterprise directly under the State-owned Assets Supervision and Administration Commission, and its products are mainly communication, signal and automatic control.
On May 9, 2008, Hao Tong, China, signed a four-power system integration contract with China Railway Electrochemical Bureau Consortium and Coastal Railway Zhejiang Co., Ltd. China Hao Tong Group undertook the communication signal system of this contract, and the contract price was about 500 million yuan.
The reason for dispatching is that in 2005, Liu Zhijun, the former Minister of Railways, announced that 465,438+0 railway sub-bureaus were abolished nationwide, and the railway system began to implement a three-level management system of "Ministry of Railways-Railway Bureau-Station Section", and the dispatching right and management right were also managed by the Railway Bureau in a large area from its subordinate railway sub-bureaus. The railway dispatching right in Zhejiang Province has also changed. On March 18, 2005, Liu Zhijun announced the establishment of three new railway bureaus, Xi 'an, Wuhan and Taiyuan, and the dispatching rights were also received from the subordinate provincial and municipal railway bureaus for unified management. This decision surprised the railway system and experts and scholars at that time. "Because the former Railway Bureau is responsible for the coordination and train dispatching between its railway sub-bureaus, it has no experience in directly managing stations and sections. After the cancellation of the sub-bureaus, the Railway Bureau will directly take over the dispatching and management of stations and sections." From then on, the dispatching right of Yong-Tai-Wen Railway belongs to Shanghai Railway Bureau.