Urban rail power supply system driving arrangement decision-making system and method based on PSCADA real-time data

Abstract

The invention discloses an urban rail power supply system driving arrangement decision-making system and method based on PSCADA real-time data. The system includes a power supply system topology analysis unit, a traction calculation unit, a running chart generation unit and an AC / DC power flow calculation unit. The method is characterized in that firstly, real-time data of a power monitoring system PSCADA is read; secondly, a topology analysis interface, a traction calculation interface, a running chart generation interface and an AC / DC power flow calculation interface are sequentially started, power flow distribution across the line is calculated, statistics of related indicators is performed, if the safety indicator threshold is exceeded, running chart parameters are adjusted, the progress returns to the step of starting the traction calculation interface, otherwise, current system running conditions and current running chart parameters are recorded; and lastly, the running conditions of the system are adjusted by changing opening and closing of switches, including main substation disconnection and traction substation disconnection, and the above steps are repeated. The system isadvantaged in that the system can calculate the maximum driving arrangement capacity of an urban rail power supply system under emergency conditions and provide technical support for driving scheduling under emergency conditions.

Description

technical field [0001] The invention relates to the technical field of electric power dispatching, in particular to an urban rail power supply system traffic arrangement decision-making system and method based on PSCADA real-time data. Background technique [0002] With the vigorous promotion of urban rail transit construction, the road network structure of rail transit is becoming more and more networked, and many cities in China have entered the period of networked operation. The passenger flow of urban rail transit is increasing, and the departure density is decreasing. In this context, the power supply system has higher requirements for reliability. However, in actual operation, power dispatchers rely more on past experience to make dispatch decisions. When faced with some emergency conditions, such as traction substation failures, large bilateral power supply systems, etc., they often hesitate to make decisions. [0003] Power flow calculation is an important means to ...

AI Technical Summary

Problems solved by technology

This type of software is basically operated on the human-computer interface. First, the urban rail power supply system is built according to the equipment graphics provided by the software, and then the power supply calculation algorithm is executed. This mode has the following shortcomings: ① In order to reduce the calculation time, The modeling of equipment graphic elements is often simplified a lot, ignoring the switch switch part; ②When the operating conditions of the system change, it is necessary to manually adjust the status information of the equipment graphic elements on the human-computer interface, which is relatively inefficient

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