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Distributed power supply system and control method for traction network

A distributed power generation and power supply system technology, applied to power lines, vehicle components, overhead lines, etc., can solve problems such as discomfort, waste, and long power lines, and achieve the goals of reducing wind curtailment, improving utilization, and extending power supply distances Effect

Active Publication Date: 2021-11-26
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0006] Chinese patent number: 202110028103.9 discloses "A System and Control Method for In-phase Traction Power Supply and Off-site Power Generation Grid-connected", which involves an off-site power generation system far away from the traction substation to connect the power generation system to the traction substation through the power supply line, so as to This is extended to the grid-connected system of multiple off-site power generation, which shows a radial structure with the traction substation as the center. The power generation systems in each place need to be connected to the traction substation through their own power supply lines, which is obviously not suitable for railways. The connection of linear distributed power generation, otherwise it will inevitably cause the power supply line to be too long and wasteful

Method used

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  • Distributed power supply system and control method for traction network
  • Distributed power supply system and control method for traction network
  • Distributed power supply system and control method for traction network

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Embodiment 1

[0034] Such as figure 1 As shown, the present embodiment provides a traction network distributed power supply system, including the traction network and the same-phase traction substation TS connected to the traction network, the traction network is erected above the running rail of the railway, and the same-phase traction substation TS The traction bus TBT is connected with the catenary T line of the traction network through the feeder FP, and the return line FN of the same-phase traction substation TS is connected with the rail R. The traction bus TBT is equipped with a voltage transformer PT, and the feeder FP is equipped with a current transformer CT. , the traction network is provided with switching stations, and the traction network distributed power supply system also includes a power generation device arranged along the corridor along the railway, and the power generation device is connected to the traction network in a distributed manner through the switching station. ...

Embodiment 2

[0048] Such as image 3 As shown, this embodiment provides a control method based on the distributed power generation and power supply system of the traction network provided in Embodiment 1, which is applied to the central coordination controller CCC and realized through the following technical solutions:

[0049] The traction network distributed power supply system includes n power generators SG1, power generators SG2, ..., power generators SGi, ..., power generators SGn, and the method includes:

[0050] The central coordinating controller CCC according to the installation capacity S1, S2, ... of the power generator SG1, power generator SG2, ..., power generator SGi, ..., power generator SGn connected to the traction grid according to the opening and closing of the traction grid , Si, ..., Sn to calculate the total installed capacity S of the power generating device, where, ;

[0051] The central coordinating controller CCC measures the real-time total power of the tract...

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Abstract

The invention provides a 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. The traction side of the same-phase traction substation is connected to the traction busbar, and the traction busbar is connected through the feeder traction network. The power generation devices installed in the corridor along the railway line are connected to the traction power supply system in a distributed manner through the switching stations along the line. The central coordination of the traction substation The controller controls the operation mode of the power generation device, and controls power generation and reactive power distribution; the use of distributed access traction power supply system is conducive to supporting the system network voltage, extending the power supply distance, and is also conducive to the distributed access and nearby consumption of new energy. Promoting the green development of the railway system can avoid related power quality problems. It is mainly used for the management of the distributed power supply system connected to the traction network.

Description

technical field [0001] The invention relates to the technical field of AC electrified railway traction power supply, and relates to a traction network distributed generation 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] Electric phase separation in the traction power supply system forms a non-electric area, causing power supply interruption, which is a bottleneck restricting the development of electrified railways. The implementation of long-distance in-phase power supply can reduce or even cancel the electrical phase separation and eliminate the non-electric area. Espec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60M3/00B60M3/06B60M1/13
CPCB60M3/00B60M3/06B60M1/13H02J3/38
Inventor 李群湛黄小红马庆安解绍锋吴波
Owner SOUTHWEST JIAOTONG UNIV
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