Feed short-circuit protector of sectionally continuous ground power supply system of electrical vehicle

Abstract

The invention discloses a feed short-circuit protector of a sectionally continuous ground power supply system of an electrical vehicle. A fuse protector is serially connected between the positive poleinput end of a feed module and a positive pole bus of a system power supply, a resistor 1 and an LED lamp are serially connected to form an indicating lamp circuit, the indicating lamp circuit is parallelly connected with the fuse protector, and a resistor 2 is connected between a positive pole of the LED lamp and a negative pole bus of the system power supply. When the feed module has a short-circuit fault but trip does not occur in a transformer substation, short-circuit current fuses the fuse protector, accordingly the faulted module is instantly cut off from the system, and the phenomenaof line power supply outage and severe burning loss of a power supply device are avoided. In addition, voltage goes across two ends of the LED lamp, an alarm apparatus is turned on, quick finding of the position where a fault point is located is facilitated, and the first-aid repair time is remarkably shortened.

Description

technical field [0001] The invention belongs to the technical field of electric vehicle power supply, in particular to a feeder short-circuit protector for segmental continuous ground power supply systems of electric vehicles. Background technique [0002] It has been more than 100 years since the German patent No. 12593 was first proposed in 1900 for electric vehicle segmental continuous ground power supply. Although this solution has many advantages such as canceling overhead network cables, convenient and safe access, and favorable urban landscape, there are still some technical problems that have not been solved, which hinders practical application. For a long time, people's efforts have mainly focused on how to ensure the safety of the power feeding equipment to the surrounding environment. In the 1990s, the European patent EP-B-0761493 proposed a modular feeding scheme, which better solved this problem. The contribution of this scheme is: when the vehicle is approach...

AI Technical Summary

Problems solved by technology

And every short-circuit fault will cause the substation to trip, causing the line power supply to be interrupted, and the expensive power supply device may be burned if it is serious.

Since it is impossible to quickly find out where the fault point is, the repair time is long

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