Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Comprehensive negative sequence and harmonic compensating system of electrified high-speed railway

A comprehensive compensation, high-speed railway technology, applied in the direction of electrical components, circuit devices, AC network circuits, etc., can solve problems such as complex structure, high voltage and current level requirements, and difficult technical realization, so as to reduce costs and improve harmonics. The effect of the wave suppression effect

Inactive Publication Date: 2011-11-09
HUNAN UNIV +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the voltage level of the three-phase side is as high as 110kV or 220kV, DSTATCOM needs to be designed as a series multiple structure, the structure is relatively complex, and the voltage and current levels of power electronic devices are high, resulting in high cost and difficult technical implementation

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
  • Comprehensive negative sequence and harmonic compensating system of electrified high-speed railway
  • Comprehensive negative sequence and harmonic compensating system of electrified high-speed railway
  • Comprehensive negative sequence and harmonic compensating system of electrified high-speed railway

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] see figure 1 , figure 1 It is a structural diagram of Embodiment 1 of the present invention. The present invention 4 is composed of a back-to-back railway power conditioner 2 (RPC), two groups of thyristor-controlled high-pass filters 3 (TCHF) with different parameters and thyristor-controlled reactors 1 (TCR). The RPC is installed between the two power supply arms on the secondary side of the three-phase V / V wiring traction transformer through two single-phase three-winding step-down transformers, and the thyristor-controlled high-pass filter is installed on the two single Under the three-phase three-winding step-down transformer, the thyristor-controlled reactor (L 3 , L 4 ) is installed under two single-phase three-winding step-down transformers connected to the other power supply arm whose voltage phase lags. The RPC consists of two converters connected through a shared DC capacitor, and the two converters are connected to the two power supply arms of the three-...

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 a comprehensive negative sequence and harmonic compensating system of electrified high-speed railway. The compensating system consists of a back-to-back type railway power regulator, two groups of thyristor controlled high-pass filters with different parameters and two groups of thyristor controlled reactors with different parameters in a combination way. The railway powerregulator is connected with two power supplying arms at a secondary side of a three-phase V / V wiring traction transformer by two single-phase three-winding reducing transformer. The two groups of thyristor controlled high-pass filters are installed below the single-phase three-winding reducing transformer which is connected with the power supplying arm with relatively advanced voltage phase, and the two groups of thyristor controlled reactors are installed below the single-phase three-winding reducing transformer which is connected with the other power supplying arm with relatively hystereticvoltage phase. Compared with other compensating structures, the compensating system has the advantages of negative sequence and harmonic compensating effect improvement and active device capacity reduction, thus having good industrial application prospect.

Description

technical field [0001] The invention relates to a negative sequence and harmonic comprehensive compensation system, in particular to an electrified high-speed railway negative sequence and harmonic comprehensive compensation system. Background technique [0002] The construction of electrified high-speed railways will provide safe, reliable, high-speed, and large-capacity transportation guarantees for the development of the national economy, and is an important measure to further alleviate the shortage of railway transportation capacity and improve the brand and quality of transportation services. However, due to the single-phase power supply mode and the unique load of electric locomotives in the high-speed railway power supply system, power quality problems such as negative sequence, harmonics, voltage fluctuations and flicker are prominent, which seriously affect the power quality of the power supply system along the high-speed railway. It will have a bad impact on enterp...

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 Patents(China)
IPC IPC(8): H02J3/01H02J3/00
CPCY02E40/40
Inventor 罗安吴传平徐先勇马伏军方璐王文代亚培杨晓
Owner HUNAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com