Modeling-based railway power supply arm monitoring method

Abstract

The invention discloses a power supply arm modeling monitoring method applied in the field of railway power supply dispatching systems. According to the method, a power supply arm expanding model according to a common information model (CIM) standard based on an international standard IEC 61970 is established, separated railway supply network distribution substations and belonged devices are combined to a whole according to power supply arm connecting relationship, and information sharing and uniform processing of each substation relevant to the power supply arm can be realized; according to linear organizational model and typical wiring manner among substations of a railway power supply system, automatic imaging and model establishing are realized; the power supply arm serves as a unit for monitoring and controlling, power supply condition of the power supply arm can be reflected more directly, and operating mode switching of the power supply arm can be realized; on the basis of the power supply model, a failure processing system is established, the range of failure positioning and analyzing is narrowed inside one power supply arm, complexity of failure process is reduced, failures can be positioned more rapidly and accurately, and failure isolation and restoration can be realized.

Description

technical field [0001] The invention belongs to the technical field of power system automation, and relates to a modeled monitoring method for a power supply arm in a railway power supply automation system. Background technique [0002] With the automatic development of the railway power supply system, the power dispatching system of the railway dispatching center collects the operating status and measurement values ​​of the equipment in the railway power supply network through the remote transmission terminal unit (RTU) installed in the station, so that the dispatching operators can track and adjust in time The operating state of the power system. [0003] The power supply arm defines the power supply range in the railway power supply system, and grasping the operation status of the power supply arm as a whole is the basis for fault isolation and recovery. With the vigorous development of high-speed railways, the power supply arm, as a management unit in the railway power ...

AI Technical Summary

Problems solved by technology

[0004] At present, in the SCADA system of railway traction power supply, the power supply arm is usually monitored and controlled by drawing the power supply arm diagram, but the power supply arm is not specially modeled. During the work of the dispatcher, the summary information of the operation status of the power supply arm cannot be intuitively obtained. There is no direct operation to switch the power supply direction of the power supply arm, and the function of switching the power supply direction can only be realized by operating the relevant switches in sequence; there are two main ideas for the fault handling technology of railway traction power supply, one is the fault processing technology based on the terminal layer, through the development of New terminal monitoring equipment or expanding the functions of existing terminal monitoring equipment to complete fault handling. This method requires information sharing between terminal equipment, which will increase the complexity of terminal monitoring equipment and the cost of communication channel construction; the other is to rely on the railway The power supply dispatching system completes the fault handling technology. The dispatching system collects the information of the entire power supply network. It only needs to develop corresponding software modules to realize the fault handling function. The cost is relatively small. However, due to the large jurisdiction of the dispatching system and the complexity of the power supply network, faults very difficult to handle

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