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Three-phase traction network distributed power generation and power supply system and control method

A distributed power generation and power supply system technology, applied in the direction of AC network circuits, AC network voltage adjustment, electrical components, etc., can solve the problems of too long power supply lines, no consideration of new energy and renewable energy power generation schemes, waste, etc., to achieve Improve the utilization rate, extend the power supply distance, and improve the effect of regenerative power utilization

Active Publication Date: 2021-10-12
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent application number: 201711265295.5 discloses "A Three-phase Traction Power Supply System"), but this application does not consider the scheme of connecting new energy and renewable energy power generation to the three-phase traction power supply system
Due to the linear distribution of the railway, it is bound to cause the power supply line to be too long and wasteful

Method used

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  • Three-phase traction network distributed power generation and power supply system and control method
  • Three-phase traction network distributed power generation and power supply system and control method

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Experimental program
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Embodiment 1

[0032] Such as figure 1 As shown, this embodiment provides a three-phase traction network distributed power supply system, including the main substation MS, three-phase traction cable TC, traction substation and three-phase traction network TN, the three-phase traction network TN along the railway Laying of running rails, including power supply rail TNa, power supply rail TNb and steel rail TNc, main bus MBa, main bus MBb and main bus MBc of main substation MS are connected to three-phase traction cable TC through feeder Fa, feeder Fb and feeder Fc, The primary side of the traction substation is connected to the three-phase traction cable TC, and the secondary side is connected to the three-phase traction network TN. There are voltage transformers Ya, voltage transformer Yb, and voltage transformers corresponding to the main bus MBa, main bus MBb, and main bus MBc. The transformer Yc is equipped with current transformer La, current transformer Lb, and current transformer Lc co...

Embodiment 2

[0046] Such as image 3 As shown, this embodiment provides a control method based on the distributed generation and power supply system of the three-phase traction network in Embodiment 1, which is applied to the central coordination controller CCC and realized through the following technical solutions:

[0047] The methods include:

[0048] The central coordinating controller CCC calculates the total number of power generators according to the installed capacity S1, S2, ..., Si, ..., Sn of n power generators G1, power generators G2, ..., power generators Gi, ..., power generators Gn Installed capacity S, where, S ;

[0049] The central coordinating controller CCC measures the real-time total power of the traction network with n power generating devices through the voltage transformer PT, the current transformer Ca, the current transformer Cb and the current transformer Cc, and distinguishes the power consumption state and the power generation state;

[0050] Trains runnin...

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Abstract

The invention provides a three-phase traction network distributed power generation and power supply system and a control method, and relates to the technical field of electrified railway traction power supply. A main bus of a main substation is connected with a three-phase traction cable through a feeder line, the primary side of a traction substation is connected with the three-phase traction cable, and the secondary side of the traction substation is connected with a three-phase traction network; power generation devices arranged along a corridor of a railway are connected into the traction substation in a distributed manner through the traction substation along the railway, and a central coordination controller arranged in the main substation controls the operation mode of the power generation device and performs power generation and reactive power distribution control. The distributed power generation and supply system is beneficial to supporting the system network voltage and prolonging the power supply distance, is also beneficial to the distributed access and nearby consumption of new energy, promotes the green development of a railway system, can avoid the related electric energy quality problems, and is mainly used for the management of access of the distributed power generation and supply system to the three-phase traction network.

Description

technical field [0001] The invention belongs to the technical field of AC electrified railway power supply, in particular to a three-phase traction network distributed power supply system and a control method. Background technique [0002] There have been a large number of successful application cases of new energy and renewable energy power generation in the power system, and the railway system has also been explored. Promote and apply new energy and renewable energy power generation along the railway line according to the principles of adapting measures to local conditions and multi-energy complementarity. [0003] As a new generation rail transit traction power supply solution, three-phase traction power supply has a strong power supply capacity, which is 7 times that of overhead lines of the same voltage level. Compared with the traditional DC traction power supply system, it is possible to avoid stray current and its hazards, and can directly use the regenerative braki...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/48H02J3/50H02J3/18H02J3/16H02J3/28H02J3/32H02J13/00
CPCH02J3/381H02J3/466H02J3/48H02J3/50H02J3/1821H02J3/16H02J3/28H02J3/32H02J13/00017H02J2300/20H02J2300/22H02J2300/28H02J2300/40Y02E70/30Y02E40/30
Inventor 李子晗黄小红李群湛郭锴吴波
Owner SOUTHWEST JIAOTONG UNIV
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