Module combined power quality conditioning system for tractive power supply network

A technology for power quality adjustment and traction power supply network, which is applied in the direction of power line, multi-phase network asymmetry reduction, multi-phase network elimination/reduction of asymmetry, etc. It can solve the problems of reducing and increasing efficiency, and achieves low cost and low cost. The effect of small ground area and low loss

Inactive Publication Date: 2009-11-11
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology allows for direct connection between an AC/DC converter (AC) grid or other electrical device with multiple smaller components that are designed specifically for efficient energy transfer from one voltage level to another. It also includes a special type of circuit called Power Quality Regulators (PQRs). These PQRS have several technical benefits: they reduce size, weight, and costs while still delivering effective performance at different levels of electricity consumption.

Problems solved by technology

This patented technical problem addressed by this patents relates to improving electrification railways' ability to handle sudden changes caused by external factors like wind or snow loads without causing damage or decreased operational efficacy for other equipment that may require more energy than usual.

Method used

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  • Module combined power quality conditioning system for tractive power supply network
  • Module combined power quality conditioning system for tractive power supply network
  • Module combined power quality conditioning system for tractive power supply network

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Embodiment Construction

[0022] The present invention will be further described in conjunction with accompanying drawing:

[0023] For an embodiment of the present invention realizing out-of-phase power supply compensation in direct power supply mode or BT power supply mode, see figure 1 shown. The first AC output terminal U of the power quality conditioner 101 is connected to the first secondary outlet terminal a of the traction transformer 66, and simultaneously connected to the contact line 67 of the uplink arm on the traction network, and the second AC output terminal V of the power quality conditioner 101 is connected to the traction transformer 66, the second secondary outgoing line terminal b is connected to the traction network rail 68 at the same time, the third AC output terminal W of the power quality conditioner 101 is connected to the third secondary outgoing line terminal c of the traction transformer 66, and is simultaneously connected to the traction network downlink arm contact line 61.

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Abstract

The invention discloses a module combined power quality conditioning system for a tractive power supply network, which belongs to the field of power quality improvement of a tractive power supply system. A power quality conditioner (101) is connected into a secondary output terminal of a traction transformer (66) and power supply arms of the traction power supply network in parallel, the energy of the two power supply arms is stored and exchanged through an energy storage capacitor at the direct current side of a power unit, and the balance of the three-phase current at the high-voltage side of the traction transformer (66) can be realized after the system is stabilized; and the power quality conditioner (101) can synchronously compensate the harmonic wave and the reactive power for each phase under the reasonable control strategy. The provided module combined power quality conditioning system for the tractive power supply network can directly run in the network without an industrial frequency transformer and an external reactor, realizes the high-voltage high-power input and the high-voltage high-power output by using the low-voltage power device and has the advantages of small occupied area, less loss and low cost.

Description

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Claims

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Application Information

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Owner BEIJING JIAOTONG UNIV
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