Research On The Intelligent Synthesis Dispatching System For Urban Rail Transit

With the development of China's economy and accelerated process of urban modernization, urban transport is becoming increasingly prominent, people's requirements for transportation services have become increasingly high. As a fast, secure and punctual way of short distance trip, metro is preferred by more and more people. Today, almost all of the world famous city take urban rail transit as the main tool for urban transport, in the promotion of urban economic development, urban rail transit itself has become the symbol of modern city.Now rail transit has a more closely relationship with people's work and life,so the reliability of its operation is particularly important. Event of an accident will lead to late or some critical danger, therefore, more and more people are searching for the good way to ensure the safe operation of urban rail transport.In the dispatch manage system of urban rail transit, SCADA controls the lifeline of the rail transit, and train operation dispatch system controls the brain of the rail transit, they are independent of each other, and become islands of information from each other. One is faulty, the other can't response timely, which may lead to some serious accidents. Therefore, it is significantly important to link them together and achieve the synthesis dispatching system between them. This paper analyzes the traction power supply system, and study the synthesis dispatching strategy for it in abnormal state and faulty state.SCADA monitors the operational status of power supply system in real-time, if it detects the abnormal state according to the overload characteristic curve of the rectifier, it will issue the warning message, then it will provide a sequence of train's delays under the constrains of the trains, ATC adjusts the trains to eliminate the situation via the data.If the traction power supply system is in faulty state, we analyzes the influence to the whole power supply capacity after some traction substation out of work, and modeling every component of the system, get the model of the DC power supply system. Then according to the capacity and the model we simulate the trains'travelling to decide the most trains allowed on the line, and finally transfer the information to the ATC as reference.