Direct net suspension mode for implementing homophase traction power supply based on high voltage synthetic compensating gear
A comprehensive compensation, traction power supply technology, applied in reactive power compensation, reactive power adjustment/elimination/compensation, power supply lines, etc., can solve problems such as cost increase and efficiency reduction, and achieve low cost, small footprint, loss small effect
Inactive Publication Date: 2010-11-03
BEIJING JIAOTONG UNIV
View PDF1 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The technical problem to be solved by the present invention is to solve the volume, cost increase and efficiency reduction problems caused by the use of power frequency transformers in the existing traction power supply system, and to provide a direct-connection system based on a high-voltage comprehensive compensation device to realize the same-phase traction power supply. net way
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0011] The present invention will be further explained in conjunction with the drawings:
[0012] The comprehensive compensation device mentioned in the present invention is the high-voltage comprehensive compensation device proposed in the patent application number 200810226792.9, titled "Traction power supply direct-mounted high-voltage comprehensive compensation device".
[0013] figure 1 It is a schematic diagram of the traction power supply direct-mounted high-voltage comprehensive compensation device proposed in the patent application 200810226792.9. It includes 2 K-level cascaded bridge arms, 2K energy storage capacitors, and K isolated bidirectional DC converters 2; the isolated bidirectional DC converter 2 is composed of the rectifier side voltage converter 3 and the inverter side voltage converter 4 through the high Frequency isolation transformer 5 is connected; the DC outlet terminals of K rectifier-side voltage converters 3 pass through energy storage capacitor C in tu...
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
Login to View More Abstract
The invention discloses a directly network-attaching method based on a high-pressure comprehensive compensation device for achieving cophase traction power supply, and relates to a traction power supply method. A leading-out terminal (x1) at a first alternating current side of a comprehensive compensation device (1) is connected into a connection point (a) of a traction network contact line (7) and a traction transformer (6) through a first alternating current reactor (11); a leading-out terminal (x2) on the second alternating current side is connected into the connection point (b) of a steelrail (8) and a transformer (6); and the leading-out terminal (x3) at the third alternating current side and a leading-out terminal (x4) at the fourth alternating current side are connected into a secondary winding (cd) on the secondary side of the traction transformer (6) through the leading-out terminal (x2) together. The invention achieves cophase supply in a compensating form, and solves the problems of volume and cost increment and efficiency reduction caused by employing an industrial frequency transformer.
Description
Technical field [0001] The invention relates to a traction power supply mode, in particular to a direct grid connection mode for realizing in-phase power supply by a high-voltage comprehensive compensation device of a traction network without a power frequency transformer coupling. Background technique [0002] As a large-capacity single-phase nonlinear load, an electric locomotive usually injects a large amount of negative sequence current, harmonic current and reactive power into it when it is connected to a three-phase symmetric power system through a traction transformer, which affects the power quality of the power supply system. China's traction power supply system is an out-of-phase power supply mode. The commonly used phase sequence rotation technology and the use of balance transformer technology can only improve the impact of negative sequence current within a certain range. Due to the randomness of the traction load in space and time distribution, they The effects that...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/18B60M3/00B60M3/06
CPCY02E40/30
Inventor 郑琼林杨晓峰贺明智王琛琛林飞黄先进孙湖张立伟郝瑞祥游小杰杨中平
Owner BEIJING JIAOTONG UNIV