Traction power supply information acquisition system based on synchronous measurement

Abstract

The invention provides a traction power supply information acquisition system based on synchronous measurement. According to the composition, power supply synchronous information acquisition units are arranged in a traction substation, an AT office and a partition office, and a power receiving synchronous information acquisition unit is arranged on a motor train unit. According to the composition of each power supply synchronous information acquisition unit, low voltage and a current transformer are respectively connected with a data acquisition card with a GPS module; the data acquisition card is connected with a data memory; and the low voltage and the current transformer are respectively connected with the voltage and current transformer output ends of the traction substation, the AT office or the partition office. According to the composition of the power receiving synchronous information acquisition unit, vehicle-mounted voltage and a current transformer are respectively connected with a data acquisition card with a GPS module; the data acquisition card is connected with a data memory; and the vehicle-mounted voltage and the current transformer are respectively connected with pantograph voltage and current transformer output ends. The system can collect the synchronous voltage and current information of all key nodes of a traction power supply system, and can establish an accurate locomotive circuit model based on the information.

Description

technical field [0001] The invention relates to a traction power supply information collection system based on synchronous measurement. Background technique [0002] In the calculation of traction power supply (such as power flow calculation, harmonic power flow, harmonic resonance, etc.), it is often difficult to obtain an accurate locomotive circuit model. Most of the calculations use constant power and ideal harmonic source models for equivalent calculations. Inaccurate, so it is difficult to accurately control and adjust the power quality of traction power supply, and in severe cases, power supply accidents will occur, which will affect the safe operation of the train. The detailed modeling of the complex "AC-DC-AC" EMU is even more limited, because there is a strong coupling and matching relationship between the EMU and the traction network environment; that is to say, different EMUs will be produced under different voltage supply conditions. Group power and harmonic r...

AI Technical Summary

Problems solved by technology

However, the voltage and current information that the existing traction power supply system can output does not include time and location information. Even if the traction power supply integrated automation (SCADA) system is used, only part of the synchronized voltage and current information can be obtained, so it cannot be comprehensively utilized and analyzed Synchronized voltage and current information of all key nodes in the traction power supply system to establish an accurate locomotive circuit analysis model

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