Check patentability & draft patents in minutes with Patsnap Eureka AI!

Apparatus and method for suppressing overhead contact system overvoltage caused by regenerative braking

A regenerative braking, catenary technology, applied in power lines, transportation and packaging, vehicle components, etc., can solve the problems of catenary performance, locomotive safe operation, catenary overvoltage, etc., to solve the problem of catenary overvoltage, Guarantee the effect of safe operation

Inactive Publication Date: 2016-05-25
XIHUA UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the locomotive is running too fast and the braking speed is high or the regenerative braking operation of the locomotive is on a long downhill slope, a large amount of electric energy will be generated due to the reverse rotation of the motor. The performance of catenary and the safe operation of locomotives have a serious impact

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
  • Apparatus and method for suppressing overhead contact system overvoltage caused by regenerative braking

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0015] Taking the 30% long downhill section from Foshan to Zhaoqing, an important channel of the Guangdong Pearl River Delta three-ring and eight-shot rail transit network, as an example, the locomotive travels on the above-mentioned long downhill, the braking method is regenerative braking, and the speed is fast. , and the braking speed is large, and there is no other locomotive running on the same power supply arm, the energy fed back to the grid by the regenerative braking of the locomotive is huge, resulting in the rise of the catenary voltage or even the overvoltage situation, which will cause serious damage to both the catenary and the locomotive. influences. see figure 1 , an overvoltage suppression scheme caused by regenerative braking includes traction substation SS, traction network and reactive power compensation device RPC, figure 1 The structure diagram of the overvoltage suppression scheme caused by regenerative braking, such as figure 1 As shown, the solution ...

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 apparatus and method for suppressing overhead contact system overvoltage caused by regenerative braking. A reactive compensating device is parallelly connected to the tail end of the overhead contact system of an existing alternating current traction power supply system and transmits inductive reactive power, the reactive compensating device may be a dynamic switching reactor, an SVC (static Var compensator) or an SVG (static Var generator). The reactive compensating device is controlled in a control manner of overhead contact system voltage tracking to transmit inductive reactive power, suppressing the overhead contact system overvoltage caused by locomotive regenerative braking. The invention can suppress the overhead contact system overvoltage caused by locomotive regenerative braking, ensuring overhead contact system power supply level and operation safety of a locomotive.

Description

technical field [0001] The invention belongs to the field of transportation, and in particular relates to a scheme for suppressing overvoltage of a catenary caused by regenerative braking. Background technique [0002] The AC traction power supply system is powered by the three-phase power of the power system, and is transformed into the single-phase power frequency AC power required by the catenary through the traction transformer to provide traction power for the electric locomotive. Regenerative braking means that the train converts the kinetic energy of the train into electrical energy for use by the auxiliary system of the train during braking, or feeds it back to the power grid. Nowadays, most of the electric locomotives adopt AC-DC-AC transmission technology, which provides the necessary conditions for realizing regenerative braking. [0003] When the locomotive runs too fast and the braking speed is high or the locomotive is in the regenerative braking operation whe...

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
IPC IPC(8): B60M3/02
CPCB60M3/02
Inventor 夏焰坤
Owner XIHUA UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com