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Novel spare power automatic switching control method of traction substation under three-main-transformer main wiring mode

A technology for traction substations and main transformers, applied to electrical components, circuit devices, AC network circuits, etc., can solve the problems of unsatisfactory quick action, low reliability, manual input, etc., to ensure quick action and reliability effects

Active Publication Date: 2022-01-18
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional two incoming lines and two main transformer wiring methods can no longer meet the development needs of urban railways and railway hub areas
Wiring methods such as two incoming lines and three main transformers and three incoming lines and three main transformers have appeared, but the standby automatic switching device of the above wiring mode still adopts the traditional backup automatic switching logic relationship of two incoming lines and two main transformer wiring, and the third line The input of the incoming line or the third main transformer is still manually input.
The above method is inefficient, does not meet the requirements of quick action, and is easy to make mistakes when the operator is not familiar with the new main wiring type, and the reliability is low

Method used

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  • Novel spare power automatic switching control method of traction substation under three-main-transformer main wiring mode
  • Novel spare power automatic switching control method of traction substation under three-main-transformer main wiring mode
  • Novel spare power automatic switching control method of traction substation under three-main-transformer main wiring mode

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specific Embodiment approach

[0079] Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with some of the aspects of the invention as detailed in scope as outlined in the appended claims.

[0080] figure 1 It is a schematic flow diagram of the main flow of the automatic switching control method realized according to the present invention.

Embodiment 1

[0081] Embodiment 1 The application of the control method implemented according to the technical concept of the present invention in the main wiring mode of three main transformers, wherein the incoming line mode is two incoming lines.

[0082] Such as figure 2 As shown in , it is a schematic diagram of the wiring principle of backup self-switching for the two-incoming line and three main transformers. In the above figure, the two-incoming line and the three main transformers work together to meet the problem of backup and self-switching for each vertical incoming line circuit. , in the case of the above wiring, there are 3 operating states and 6 action logics for standby automatic switching. Among them, there is only one type of standby automatic switching in in-line mode, and each type of standby automatic switching has unique action logic. Among them Inline-first mode does not allow interleaved states, while non-inline mode allows interleaved states.

[0083] The operatio...

Embodiment 2

[0095] Embodiment 2 The control method implemented according to the technical concept of the present invention is applied in the main wiring mode of three main transformers, wherein the incoming line mode is three incoming lines.

[0096] There are 9 operating states and 32 action logics for standby automatic switching in this wiring mode. Among them, standby automatic switching is divided into three types: main transformer standby automatic switching, incoming line standby automatic switching, and in-line mode standby automatic switching. Each type of standby automatic switching Action logic is unique.

[0097] Such as Figure 5 As shown in , it is a schematic diagram of the wiring principle according to the present invention for three-incoming lines and three main transformers to prepare for automatic switching.

[0098] Among them, as shown in the above wiring, a circuit breaker is designed between the 3# circuit and the 1# circuit and the 2# circuit to further form a stan...

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Abstract

The invention discloses a novel spare power automatic switching control method and system of a traction substation under a three-main-transformer main wiring mode. The control method mainly comprises the steps of acquiring the main wiring mode of the traction substation; after the main wiring mode of the traction substation is obtained, determining a priority mode under the main wiring mode, then judging an operation state according to a wire inlet state and a main transformer state, and meanwhile, judging whether the operation state is in an intermediate operation state or not; and further judging whether the intermediate operation state is a process state or an initial state in the intermediate operation state, determining the fault information in the above state, and obtaining the spare power automatic switching logic under the corresponding condition to complete the execution of the spare power automatic switching. According to the control method and system, the novel spare power automatic switching control method and system of the traction substation under the three-main-transformer main wiring mode are provided for the railway field, and the reliability and the quickness of spare power automatic switching action of the railway three-main-transformer traction substation are guaranteed.

Description

technical field [0001] The application belongs to the field of electrified railway power supply and transformation engineering, and specifically belongs to a backup automatic switching control method for traction substations of railway three main transformers. Background technique [0002] In railway hub areas or urban railway projects with short line lengths, the design of the main wiring of traction substations should give more consideration to its reliability and flexibility. The traditional two incoming lines and two main transformer wiring methods can no longer meet the development needs of urban railways and railway hub areas. Wiring methods such as two incoming lines and three main transformers and three incoming lines and three main transformers have appeared, but the standby automatic switching device of the above wiring method still adopts the traditional backup automatic switching logic relationship of two incoming lines and two main transformer wiring, and the th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J13/00
CPCH02J3/0073H02J13/00034Y04S20/20Y02B70/30
Inventor 吴华丹吕文利温建民张华志高黎明汪自成张雷梁翔黄军左才李进军王丽张睿罗杰
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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