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A traction network crossing power utilization system and control method for bilateral power supply in subdivisions

A traction network and zoning technology, applied in power lines, electrical components, circuit devices, etc., can solve problems such as reducing or eliminating the ineffective solutions of bilateral power supply ride-through power, and achieve improved direct utilization, convenient adjustment, technical advanced effects

Active Publication Date: 2022-05-17
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that there is no effective solution to reduce or eliminate the ride-through power of bilateral power supply

Method used

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  • A traction network crossing power utilization system and control method for bilateral power supply in subdivisions
  • A traction network crossing power utilization system and control method for bilateral power supply in subdivisions
  • A traction network crossing power utilization system and control method for bilateral power supply in subdivisions

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 As shown, the single-line schematic diagram of the relationship between bilateral power supply and grid connection is shown in figure 1 As shown, the bilateral power supply traction network OCS forms a parallel structure with the grid G ​​through the traction substation TSa and the traction substation TSb on both sides. According to the parallel shunt principle, bilateral power supply will generate a current component parallel to the grid G ​​in the traction network OCS, called the balance current, and generate cross-current power, which will affect the electricity billing problem of the railway. If the power billing of the two substations with bilateral power supply adopts the method of return and reverse calculation, the problem can be solved well. If the return is not counted or the return is positively calculated, it will become an additional burden on the railway. to this end,

[0044] Such as figure 2 As shown, this embodiment provides a tract...

Embodiment 2

[0054] Such as image 3 As shown, this embodiment provides a control method based on the power utilization system of the traction network through the bilateral power supply provided by the sub-district station in Embodiment 1, which is applied to the central controller CC and realized through the following technical solutions: Step S100: Detect the traction transformer Electricity information of power station TSa and traction substation TSb;

[0055] Step S200: According to the power information of the traction substation TSa and the traction substation TSb, calculate the power information of the traction substation TSa and the traction substation TSb, wherein the traction substation TSa or the traction substation TSb The power flowing to the traction network OCS is positive, and the power flowing from the traction network OCS to the traction substation TSa or traction substation TSb is negative;

[0056] Step S300: According to the power information, the central controller C...

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Abstract

The invention provides a power utilization system and a control method for cross-over power of a bilateral power supply traction network in a district station, and relates to the field of circuit design of a traction power supply system. The traction network OCS is supplied bilaterally by two adjacent traction substations TSa and TSb, and the cross-power utilization device SES and the central controller CC are set in the partition between the traction substation TSa and the traction substation TSb , the central controller CC obtains the traction substation TSa and traction substation TSb traction busbar voltage and traction feeder current information in real time, and controls the ride-through power utilization device SES to utilize the ride-through power of the bilateral power supply traction network OCS, so that the ride-through power returned to the power grid The power reaches the preset requirement. The invention utilizes the crossing power of the traction network without changing the power supply structure of the power grid to the railway, eliminates the negative influence brought by the crossing power measurement, and fully exerts the advantages of bilateral power supply.

Description

technical field [0001] The invention relates to the field of circuit design of a traction power supply system, in particular to a traction network power utilization system and a control method for bilateral power supply in subregions. Background technique [0002] The electric separation phase of the electrified railway is the weak link in the whole traction power supply system. The neutral section of the electric separation phase forms a dead zone, causing power supply interruption. However, the power failure distance is more than 500 meters, which seriously restricts the good operation of the train, and even causes the train to stop on a slope when going uphill. The bilateral power supply of the electrified railway can cancel the electric phase split where the partition is located, eliminate the powerless area here, ensure the uninterrupted power supply of the train, and eliminate the hidden danger of excessive phase split. Bilateral power supply has the advantages of hig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/06H02J3/28H02J13/00B60M3/06
Inventor 黄小红李群湛杨乃琪彭友任桃王翰林李昊阳
Owner SOUTHWEST JIAOTONG UNIV
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