AT traction electric power supply system of 27.5KV AC electrification railway

Abstract

The invention relates to an AT traction power supply system of a 27.5KV alternating current gasification railway. The system comprises: the output voltage of a traction transformer (S) of a traction substation is 27.5kV; one output end (M) of the traction transformer (S) is connected with a steel rail (R); the other output end (N) is connected with a positive feeder (F) of a railway traction net; an autotransformer (AT) with transformation ratio of 2 to 1 is arranged in the railway traction net every other 10 to 20 km; one end (a) of the autotransformer (AT) is connected with a railway contact line (T); a center (o) is connected with the steel rail (R); and the other end (b) of the autotransformer (AT) is connected with the positive feeder (F) of the railway traction net. The system has the advantages of the AT power supply system and has small equipment investment, small engineering quantity and easy overhauling and maintenance; moreover, the system is easy to reconstruct the prior direct supply and BT mode railway, and is convenient to implement, and favorable for development of a high-speed overloading railway.

Description

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AI Technical Summary

Benefits of technology

This patented technology allows for better performance and efficiency during use compared to current methods such as AC induction motors. By connecting either the input terminal on each end from the primary coils to the middle point of the autotransformer without changing its polarity, this design can reduce voltages while still providing efficient operation. Additionally, the circuitry simplifies the overall design making it easier to maintain and operate over long periods of service due to fewer components needed. Overall, these technical improvements result in improved reliability, durable life span, lower operating costs, ease of installation, etc., leading to increased adoption across different industries worldwide

Problems solved by technology

The technical problem addressed in these patents relates to improving the performance and efficiency of electric vehicles used in high-power applications like highway transport systems without increasing their weight and costs associated with traditional power supplies.

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