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Comprehensive compensation system for Vv wiring traction substation with out-of-phase and in-phase compatibility

A traction substation, comprehensive compensation technology, applied in reactive power compensation, reactive power adjustment/elimination/compensation, AC network to reduce harmonics/ripples, etc., can solve the problem of large train speed loss and substation tripping , train slope stop and other problems, to achieve the effect of cost reduction, speed loss reduction, and cost reduction

Inactive Publication Date: 2013-04-10
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of excessive phase separation, the loss of train speed is large, and at the same time, it is easy to cause accidents such as arcing, overvoltage, tripping of substations, and train parking on slopes. Excessive phase separation has become the bottleneck of traction power supply for the entire electrified railway

Method used

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  • Comprehensive compensation system for Vv wiring traction substation with out-of-phase and in-phase compatibility
  • Comprehensive compensation system for Vv wiring traction substation with out-of-phase and in-phase compatibility
  • Comprehensive compensation system for Vv wiring traction substation with out-of-phase and in-phase compatibility

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Experimental program
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Effect test

Embodiment 2

[0031] figure 2 A specific embodiment of the present invention is shown, which is an in-phase operation mode of an electrified railway Vv traction substation based on mixed compensation to realize out-of-phase and in-phase compatibility comprehensive compensation systems. Its composition is: on the secondary side of the traction substation, only the lead (T1-N) phase supplies power to the traction load, the inductance FL is connected to the lead (T1-N) phase of the Vv traction transformer, and the capacitor FC is connected to the lagging (T2-N) phase ) phase, the AC side of the first static var generator SVG1 and the second static var generator SVG2 connected to the DC side are respectively connected to the leading (T1-N) phase and lagging (T2-N) phase of the Vv traction transformer, generating Negative sequence power flow opposite to traction load. Through reasonable control, take reactive power compensation and harmonic control into consideration. Reduce the cost by intro...

Embodiment 3

[0033] image 3 It shows that a specific implementation of the present invention is an out-of-phase operation mode of an electrified railway Vv traction substation based on a fully active device (SVG) to realize a comprehensive compensation system compatible with out-of-phase and in-phase. Its composition is: on the secondary side of the traction substation, both the leading (T1-N) phase and the lagging (T2-N) phase supply power to the traction load, the first static var generator SVG1 connected to the DC side and the second static var generator The AC side of the power generator SVG2 is respectively connected to the leading (T1-N) phase and lagging (T2-N) phase of the Vv traction transformer to generate a negative sequence power flow opposite to the traction load. Through reasonable control, take reactive power compensation and harmonic control into consideration.

Embodiment approach

[0035] Figure 4 It shows that a specific implementation of the present invention is an in-phase operation mode of an electrified railway Vv traction substation based on a fully active device (SVG) to realize a comprehensive compensation system compatible with out-of-phase and in-phase. Its composition is: on the secondary side of the traction substation, only the lead (T1-N) phase supplies power to the traction load, the inductance FL is connected to the lead (T1-N) phase of the Vv traction transformer, and the capacitor FC is connected to the lagging (T2-N) phase ) phase, the AC side of the first static var generator SVG1 and the second static var generator SVG2 connected to the DC side are respectively connected to the leading (T1-N) phase and lagging (T2-N) phase of the Vv traction transformer, generating Negative sequence power flow opposite to traction load. Through reasonable control, take reactive power compensation and harmonic control into consideration.

[0036] I...

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Abstract

The invention discloses a comprehensive compensation system for a Vv wiring traction substation with out-of-phase and in-phase compatibility. On the secondary side of a traction substation, both a leading phase (T1-N) and a lagging phase (T2-N) supplies a traction load with power. The direct current sides of a first static var generator (SVG1) and a second static var generator (SVG2) are arranged in a back-to-back way, the alternating current sides of the SVG1 and the SVG2 are respectively connected with the leading phase (T1-N) and the lagging phase (T2-N) of a Vv traction transformer, the comprehensive compensation system which is compatible with out-of-phase and in-phase structures and easily develops and transforms from an out-of-phase mode to an in-phase mode is formed so as to generate a negative sequence power flow opposite to the traction load, and reactive compensation and harmonic suppression are combined through reasonable control. The application of the system is flexible, in-phase power supply is easy to realize, power phase splitting at the exit part of the traction substation is cancelled, and power supply bottleneck is eliminated.

Description

technical field [0001] The invention relates to the fields of traction power supply and power quality comprehensive compensation for electrified railways, in particular to a comprehensive compensation system compatible with out-of-phase and in-phase for Vv wiring traction substations. Background technique [0002] In recent years, due to the advantages of electric traction in energy saving, land saving, low carbon, and environmental protection, electrified railway, as a modern transportation mode, has played an increasingly important role in railway construction and operation. By the end of 2011, the national railway operating mileage had reached 93,000 kilometers, of which electrified railways accounted for about half, and accounted for more than 80% of the total railway transportation volume. According to the plan, the national railway operating mileage will increase to more than 120,000 kilometers in 2020, and the electrification rate of the railway network will increase ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18H02J3/01
CPCY02E40/30Y02E40/40
Inventor 李群湛郭锴易东景德炎周福林解绍锋陈民武舒泽亮贺建闽张丽艳刘炜郭蕾马庆安李子晗余俊祥张丽高师湃
Owner SOUTHWEST JIAOTONG UNIV
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