Unlock instant, AI-driven research and patent intelligence for your innovation.

Power supply automatic switching method, monitoring system and rail medium-voltage looped network system

A technology of automatic switching and power supply system, which is applied in the field of rail transit and can solve problems such as inappropriate

Active Publication Date: 2021-03-05
BYD CO LTD
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the above method requires the master station to identify the fault area through the current direction, and then the master station needs to trip and isolate the fault area; this control strategy is not suitable for the medium-voltage ring network system of rubber-tyred trams in the rail transit industry

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Power supply automatic switching method, monitoring system and rail medium-voltage looped network system
  • Power supply automatic switching method, monitoring system and rail medium-voltage looped network system
  • Power supply automatic switching method, monitoring system and rail medium-voltage looped network system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary, and embodiments of the present invention are described in detail below.

[0038] figure 1 A schematic diagram of a rail transit medium-voltage single-ring network operation scenario applicable to the embodiment of the present invention, such as figure 1 As shown, the rail transit adopts a single-ring network power supply mode. L1, L2, and L3 are the external power supply lines of the rail transit, providing power for the substations of each rail station, and the power for the external power supply lines comes from the substation of the local power grid company. CB1, CB8, and CB15 are incoming circuit breakers for external power supply, and CB2~CB7, CB9~CB14 are ring network circuit breakers. In the normal power supply mode, CB5 and CB11 are in the opening position, and the other circuit breakers are in the closing position, tha...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an automatic power supply switching method, a monitoring system and a rail medium-voltage looped network system. The power supply switching method comprises the following steps: acquiring power supply detection data of each power supply region in the medium-voltage looped network power supply system; identifying a fault power supply region and a fault type according to thepower supply detection data, and determining an adopted switching control mode according to the fault type, wherein the switching control mode comprises an external power supply fault switching mode and a single-ring network internal fault switching mode; and switching the power supply of the fault power supply region according to the switching control mode. The method can be applied to the rail transit medium-voltage ring network power supply system, and can perform automatic switching operation and realize self-recovery power supply.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to a power supply automatic switching method, a monitoring system and a rail transit medium-voltage ring network system. Background technique [0002] At present, in the power industry, distribution network automation technology is being widely used. In related technologies, for the isolation and recovery of distribution network faults, the main station system of distribution network automation is usually used to isolate and recover the faults of feeders. The main technology is to use the FTU (Feeder Terminal Unit, The feeder terminal equipment) judges the fault current direction, and sends the result to the master station system of the control center, and then the master station system calculates the fault area, and then through remote control, the switches on both sides of the fault line are opened and isolated. [0003] However, the above method requires the master station ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/28
CPCH02H7/261H02H7/28
Inventor 杨志荣颜学刚何中主崔桃华潘灿辉
Owner BYD CO LTD